Publications
2023
KC, Lee; SW, Lim; Jh, Cho; H, Oh; HS, Hwang
In: Journal of Orofacial Orthopedics, 2023.
Abstract | Links | BibTeX | Tags: dental adhesives, device failure, lingual bonded retainer, Mandibular fixed retainer, Orthodontic appliances fixed, Randomized clinical trials
@article{Oh2023c,
title = {Survival rates of mandibular fixed retainers: comparison of a tube-type retainer and conventional multistrand retainers : A prospective randomized clinical trial },
author = {Lee KC and Lim SW and Cho Jh and Oh H and Hwang HS},
url = {https://pubmed.ncbi.nlm.nih.gov/36847790/},
doi = {10.1007/s00056-023-00447-5},
year = {2023},
date = {2023-02-27},
journal = {Journal of Orofacial Orthopedics},
abstract = {Objective: The purposes of this study were to evaluate the survival rate of a tube-type mandibular fixed retainer and compare it to conventional multistrand retainers.
Materials and methods: In all, 66 patients who had completed their orthodontic treatment were enrolled in this study. They were allocated randomly to a tube-type retainer group or a 0.020 multistrand fixed retainer group. In case of the tube-type retainer, a thermoactive 0.012 NiTi was placed into 6 mini-tubes passively bonded to the anterior teeth. The patients were recalled at 1, 3, 6, 12, and 24 months after retainer placement. During the 2‑year follow-up period, any first-time failure of retainers was recorded. Kaplan-Meier survival analysis and log-rank tests were used to compare the failure rates between the two types of retainers.
Results: Of the 34 patients, 14 (41.2%) showed failure in the multistrand retainer group, whereas only 2 of 32 (6.3%) reported failure in the tube-type retainer group. There was a statistically significant difference in failure between the multistrand retainer and the tube-type retainer (log-rank test, P = 0.001). The hazard ratio was 11.937 (95% confidence interval 2.708-52.620; P = 0.005).
Conclusion: The tube-type retainer can be used with fewer concerns about recurrent retainer detachments during orthodontic retention.},
keywords = {dental adhesives, device failure, lingual bonded retainer, Mandibular fixed retainer, Orthodontic appliances fixed, Randomized clinical trials},
pubstate = {published},
tppubtype = {article}
}
Materials and methods: In all, 66 patients who had completed their orthodontic treatment were enrolled in this study. They were allocated randomly to a tube-type retainer group or a 0.020 multistrand fixed retainer group. In case of the tube-type retainer, a thermoactive 0.012 NiTi was placed into 6 mini-tubes passively bonded to the anterior teeth. The patients were recalled at 1, 3, 6, 12, and 24 months after retainer placement. During the 2‑year follow-up period, any first-time failure of retainers was recorded. Kaplan-Meier survival analysis and log-rank tests were used to compare the failure rates between the two types of retainers.
Results: Of the 34 patients, 14 (41.2%) showed failure in the multistrand retainer group, whereas only 2 of 32 (6.3%) reported failure in the tube-type retainer group. There was a statistically significant difference in failure between the multistrand retainer and the tube-type retainer (log-rank test, P = 0.001). The hazard ratio was 11.937 (95% confidence interval 2.708-52.620; P = 0.005).
Conclusion: The tube-type retainer can be used with fewer concerns about recurrent retainer detachments during orthodontic retention.
2021
Bianchi, J; Goncalves, J Roberto; Ruellas, A Carlos De Oliveira; Bianchi, J Vierira Pastana; Ashman, LM; et al,
Radiographic interpretation using high-resolution Cbct to diagnose degenerative temporomandibular joint disease Journal Article
In: PLOS ONE, vol. 16, no. 8, pp. e0255937, 2021.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, fixed appliances, Growth, hyperdivergent, Mandibular fixed retainer
@article{Bianchi2021b,
title = {Radiographic interpretation using high-resolution Cbct to diagnose degenerative temporomandibular joint disease},
author = {J Bianchi and J Roberto Goncalves and A Carlos De Oliveira Ruellas and J Vierira Pastana Bianchi and LM Ashman and et al },
url = {https://pubmed.ncbi.nlm.nih.gov/34375354/},
doi = {10.1371/journal.pone.0255937},
year = {2021},
date = {2021-08-10},
urldate = {2021-08-10},
journal = {PLOS ONE},
volume = {16},
number = {8},
pages = {e0255937},
abstract = {The objective of this study was to use high-resolution cone-beam computed images (hr- CBCT) to diagnose degenerative joint disease in asymptomatic and symptomatic subjects using the Diagnostic Criteria for Temporomandibular Disorders DC/TMD imaging criteria. This observational study comprised of 92 subjects age-sex matched and divided into two groups: clinical degenerative joint disease (c-DJD, n = 46) and asymptomatic control group (n = 46). Clinical assessment of the DJD and high-resolution CBCT images (isotropic voxel size of 0.08mm) of the temporomandibular joints were performed for each participant. An American Board of Oral and Maxillofacial Radiology certified radiologist and a maxillofacial radiologist used the DC/TMD imaging criteria to evaluate the radiographic findings, followed by a consensus of the radiographic evaluation. The two radiologists presented a high agreement (Cohen's Kappa ranging from 0.80 to 0.87) for all radiographic findings (osteophyte, erosion, cysts, flattening, and sclerosis). Five patients from the c- DJD group did not present radiographic findings, being then classified as arthralgia. In the asymptomatic control group, 82.6% of the patients presented radiographic findings determinant of DJD and were then classified as osteoarthrosis or overdiagnosis. In conclusion, our results showed a high number of radiographic findings in the asymptomatic control group, and for this reason, we suggest that there is a need for additional imaging criteria to classify DJD properly in hr-CBCT images.},
keywords = {AAOF, Adolescents, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, fixed appliances, Growth, hyperdivergent, Mandibular fixed retainer},
pubstate = {published},
tppubtype = {article}
}
Knigge, R; McNulty, K; Oh, H; Hardin, A; Leary, E; Duren, D; Valathan, M; Sherwood, R
Geometric morphometric analysis of growth patterns among facial types. Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 160, no. 3, pp. 430-441, 2021.
Abstract | Links | BibTeX | Tags: Adolescents, anterior openbite, Cranial base, craniofacial, extraction, Mandibular fixed retainer, retrospective, vertical control
@article{Knigge2020,
title = {Geometric morphometric analysis of growth patterns among facial types. },
author = {R Knigge and K McNulty and H Oh and A Hardin and E Leary and D Duren and M Valathan and R Sherwood},
url = {https://www.sciencedirect.com/science/article/pii/S0889540621003486?via%3Dihub},
doi = {10.1016/j.ajodo.2020.04.038},
year = {2021},
date = {2021-06-23},
urldate = {2021-06-23},
journal = {Am J Orthod Dentofacial Orthop},
volume = {160},
number = {3},
pages = {430-441},
abstract = {Extreme patterns of vertical facial divergence are of great importance to clinicians because of their association with dental malocclusion and functional problems of the orofacial complex. Understanding the growth patterns associated with vertical facial divergence is critical for clinicians to provide optimal treatment. This study evaluates and compares growth patterns from childhood to adulthood among 3 classifications of vertical facial divergence using longitudinal, lateral cephalograms from the Craniofacial Growth Consortium Study.},
keywords = {Adolescents, anterior openbite, Cranial base, craniofacial, extraction, Mandibular fixed retainer, retrospective, vertical control},
pubstate = {published},
tppubtype = {article}
}
Hardin, A M; Knigge, R P; Oh, H; et al,
Estimating craniofacial growth cessation: Comparison of asymptote- and rate-based methods Journal Article
In: The Cleft Palate-Craniofacial Journal, 2021.
Abstract | Links | BibTeX | Tags: AAOF, Cranial base, craniofacial, Discrepency Index, Mandibular fixed retainer, Mandibular remodeling, retrospective, teaching
@article{Hardin2021,
title = {Estimating craniofacial growth cessation: Comparison of asymptote- and rate-based methods},
author = {A M Hardin and R P Knigge and H Oh and et al},
url = {https://journals.sagepub.com/doi/full/10.1177/10556656211002675},
doi = {10.1177/10556656211002675},
year = {2021},
date = {2021-05-17},
urldate = {2021-05-17},
journal = {The Cleft Palate-Craniofacial Journal},
abstract = {To identify differences between asymptote- and rate-based methods for estimating age and size at growth cessation in linear craniofacial measurements.},
keywords = {AAOF, Cranial base, craniofacial, Discrepency Index, Mandibular fixed retainer, Mandibular remodeling, retrospective, teaching},
pubstate = {published},
tppubtype = {article}
}
Cong, A; Massaro, C; Bianchi, J; Ruellas, ACDO; et al,
Dental long axes using digital dental models compared to cone-beam computed tomography. Journal Article
In: Orthod Cranifac Res, 2021.
Abstract | Links | BibTeX | Tags: AAOF, adult, clear aligners, Cranial base, hyperdivergent, Mandibular fixed retainer, Posttreatment, retrospective, teaching
@article{Cong2021,
title = {Dental long axes using digital dental models compared to cone-beam computed tomography.},
author = {A Cong and C Massaro and J Bianchi and ACDO Ruellas and et al},
url = {https://onlinelibrary.wiley.com/doi/10.1111/ocr.12489},
doi = {10.1111/ocr.12489},
year = {2021},
date = {2021-05-09},
urldate = {2021-05-09},
journal = {Orthod Cranifac Res},
abstract = {Standard methods of evaluating tooth long axes are not comparable (digital dental models [DDMs], panoramic and cephalometric radiographs) or expose patients to more radiation (cone-beam computed tomography [CBCT]). This study aimed to compare angular changes in tooth long axes using DDMs vs using CBCTs. },
keywords = {AAOF, adult, clear aligners, Cranial base, hyperdivergent, Mandibular fixed retainer, Posttreatment, retrospective, teaching},
pubstate = {published},
tppubtype = {article}
}
Parizotto, JOL; Peixoto, AP; Borsato, KT; Bianchi, J; et al,
Craniofacial and airway morphology of individuals with oculoauriculovertebral spectrum. Journal Article
In: Orthodontics & Craniofacial Research, 2021.
Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, clear aligners, clinical orthodontist, Mandibular fixed retainer, Posttreatment, research, technique, vertical control, x-ray
@article{Parizotto2021,
title = {Craniofacial and airway morphology of individuals with oculoauriculovertebral spectrum.},
author = {JOL Parizotto and AP Peixoto and KT Borsato and J Bianchi and et al},
url = {https://pubmed.ncbi.nlm.nih.gov/33713375/},
doi = {10.1111/ocr.12483},
year = {2021},
date = {2021-03-13},
urldate = {2021-03-13},
journal = {Orthodontics & Craniofacial Research},
abstract = {The objectives of this study were to characterize the craniofacial and airway morphology of oculo-auriculo-vertebral spectrum (OAVS) individuals using computed tomography (CT) examination.},
keywords = {AAOF, anterior openbite, clear aligners, clinical orthodontist, Mandibular fixed retainer, Posttreatment, research, technique, vertical control, x-ray},
pubstate = {published},
tppubtype = {article}
}
Boubolo, Louis; Dumont, Maxime; Brosset, Serge; Bianchi, Jonas; Ruellas, Antonio; Gurgel, Marcela; Massaro, Camila; Castillo, Aron Aliaga Del; Ioshida, Marcos; Yatabe, Marilia; Benavides, Erika; Rios, Hector; Soki, Fabiana; Neiva, Gisele; Paniagua, Beatriz; Cevidanes, Lucia; Styner, Martin; Prieto, Juan Carlos
FlyBy CNN: a 3D surface segmentation framework Journal Article
In: Proc. SPIE 11596, Medical Imaging 2021: Image Processing, 115962B , 2021.
Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, Growth, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment, pressure tension, technique, vertical control
@article{Boubolo2021,
title = {FlyBy CNN: a 3D surface segmentation framework},
author = {Louis Boubolo and Maxime Dumont and Serge Brosset and Jonas Bianchi and Antonio Ruellas and Marcela Gurgel and Camila Massaro and Aron Aliaga Del Castillo and Marcos Ioshida and Marilia Yatabe and Erika Benavides and Hector Rios and Fabiana Soki and Gisele Neiva and Beatriz Paniagua and Lucia Cevidanes and Martin Styner and Juan Carlos Prieto},
url = {https://pubmed.ncbi.nlm.nih.gov/33758460/},
doi = {10.1117/12.2582205},
year = {2021},
date = {2021-02-15},
journal = {Proc. SPIE 11596, Medical Imaging 2021: Image Processing, 115962B },
abstract = {In this paper, we present FlyBy CNN, a novel deep learning based approach for 3D shape segmentation. FlyByCNN consists of sampling the surface of the 3D object from different view points and extracting surface features such as the normal vectors. The generated 2D images are then analyzed via 2D convolutional neural networks such as RUNETs. We test our framework in a dental application for segmentation of intra-oral surfaces. The RUNET is trained for the segmentation task using image pairs of surface features and image labels as ground truth. The resulting labels from each segmented image are put back into the surface thanks to our sampling approach that generates 1-1 correspondence of image pixels and triangles in the surface model. The segmentation task achieved an accuracy of 0.9.},
keywords = {AAOF, Cone-beam computed tomography, Cranial base, Growth, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment, pressure tension, technique, vertical control},
pubstate = {published},
tppubtype = {article}
}
Brosset, Serge; Dumont, Maxime; Cevidanes, Lucia; Soroushmehr, Reza; Bianchi, Jonas; Gurgel, Marcela L; Deleat-besson, Romain; Le, Celia; Ruellas, Antonio; Yatabe, Marilia; Rosas, Liliane; Goncalves, Joao; Najarian, Kayvan; Gryak, Jonathan; Paniagua, Beatriz; Styner, Martin; Prieto, Juan Carlos
"Web infrastructure for data management, storage and computation", Proc. SPIE 11600, Journal Article
In: Proc SPIE 11600, Medical Imaging 2021: Biomedical Applications in Molecular, Structural, and Functional Imaging, 1166001N, 2021.
Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, fixed appliances, hyperdivergent, Mandibular fixed retainer, Peer Assessment Rating Index
@article{Brosset2021,
title = {"Web infrastructure for data management, storage and computation", Proc. SPIE 11600,},
author = {Serge Brosset and Maxime Dumont and Lucia Cevidanes and Reza Soroushmehr and Jonas Bianchi and Marcela L Gurgel and Romain Deleat-besson and Celia Le and Antonio Ruellas and Marilia Yatabe and Liliane Rosas and Joao Goncalves and Kayvan Najarian and Jonathan Gryak and Beatriz Paniagua and Martin Styner and Juan Carlos Prieto},
url = {https://www.researchgate.net/publication/349303820_Web_Infrastructure_for_Data_Management_Storage_and_Computation},
doi = {10.1117/12.2582283},
year = {2021},
date = {2021-02-14},
journal = {Proc SPIE 11600, Medical Imaging 2021: Biomedical Applications in Molecular, Structural, and Functional Imaging, 1166001N},
abstract = {The Data Storage for Computation and Integration (DSCI) proposes management innovations for web-based secure data storage, algorithms deployment, and task execution. Its architecture allows inclusion of plugins for upload, browsing, sharing, and task execution in remote computing grids. Here, we demonstrate the DSCI implementation and the deployment of Image processing tools (TMJSeg), machine learning algorithms (MandSeg, DentalModelSeg), and advanced statistical packages (Multivariate Functional Shape Data Analysis, MFSDA), with data transfer and task execution handled by the clusterpost plug-in. Due to its comprehensive web-based design, local software installation is no longer required. The DSCI aims to enable and maintain a distributed computing and collaboration environment across multi-site clinical centers for the data processing of multisource features such as clinical, biological markers, volumetric images, and 3D surface models, with particular emphasis on analytics for temporomandibular joint osteoarthritis (TMJ OA).},
keywords = {AAOF, Cone-beam computed tomography, Cranial base, fixed appliances, hyperdivergent, Mandibular fixed retainer, Peer Assessment Rating Index},
pubstate = {published},
tppubtype = {article}
}
2020
Sherwood, R; Oh, H; Valiathan, M; McNulty, K; Duren, D; Knigge, R; Hardin, A; Holzhauser, C; Middleton, K
Bayesian Approach to Longitudinal Craniofacial Growth: The Craniofacial Growth Consortium Study. Journal Article
In: American Association of Orthodontists Foundation, 2020.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, Cranial base, Growth, hyperdivergent, Mandibular fixed retainer
@article{Sherwood2020,
title = {Bayesian Approach to Longitudinal Craniofacial Growth: The Craniofacial Growth Consortium Study.},
author = {R Sherwood and H Oh and M Valiathan and K McNulty and D Duren and R Knigge and A Hardin and C Holzhauser and K Middleton},
url = {https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.24520},
doi = {10.1002/ar.24520},
year = {2020},
date = {2020-10-04},
urldate = {2020-10-04},
journal = {American Association of Orthodontists Foundation},
abstract = {Early in the 20th century, a series of studies were initiated across North America to investigate and characterize childhood growth. The Craniofacial Growth Consortium Study (CGCS) combines craniofacial records from six of those growth studies (15,407 lateral cephalograms from 1,913 individuals; 956 females, 957 males, primarily European descent). Standard cephalometric points collected from the six studies in the CGCS allows direct comparison of craniofacial growth patterns across six North American locations. Three assessors collected all cephalometric points and the coordinates were averaged for each point. Twelve measures were calculated from the averaged coordinates. We implemented a multilevel double logistic equation to estimate growth trajectories fitting each trait separately by sex. Using Bayesian inference, we fit three models for each trait with different random effects structures to compare differences in growth patterns among studies. The models successfully identified important growth milestones (e.g., age at peak growth velocity, age at cessation of growth) for most traits. In a small number of cases, these milestones could not be determined due to truncated age ranges for some studies and slow, steady growth in some measurements. Results demonstrate great similarity among the six growth studies regarding craniofacial growth milestone estimates and the overall shape of the growth curve. These similarities suggest minor variation among studies resulting from differences in protocol, sample, or possible geographic variation. The analyses presented support combining the studies into the CGCS without substantial concerns of bias. The CGCS, therefore, provides an unparalleled opportunity to examine craniofacial growth from childhood into adulthood.},
keywords = {AAOF, Adolescents, anterior openbite, Cranial base, Growth, hyperdivergent, Mandibular fixed retainer},
pubstate = {published},
tppubtype = {article}
}
Serge, B; Maxime, D; Bianchi, J; Antonio, R; Lucia, C; Marilia, Y; Joao, G; Erika, C; Fabiana, S; Beatriz, P; Juan, P; Kayvan, N; Jonathan, G; Reza, S
3D Auto-Segmentation of Mandibular Condyles Journal Article
In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), pp. 1270-1273, 2020.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, Peer Assessment Rating Index, Posttreatment, teaching
@article{Brosset2020,
title = {3D Auto-Segmentation of Mandibular Condyles},
author = {B Serge and D Maxime and J Bianchi and R Antonio and C Lucia and Y Marilia and G Joao and C Erika and S Fabiana and P Beatriz and P Juan and N Kayvan and G Jonathan and S Reza },
url = {https://pubmed.ncbi.nlm.nih.gov/33018219/},
doi = {10.1109/EMBC44109.2020.9175692},
year = {2020},
date = {2020-07-00},
urldate = {2020-07-00},
journal = {2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)},
pages = {1270-1273},
abstract = {Temporomandibular joints (TMJ) like a hinge connect the jawbone to the skull. TMJ disorders could cause pain in the jaw joint and the muscles controlling jaw movement. However, the disease cannot be diagnosed until it becomes symptomatic. It has been shown that bone resorption at the condyle articular surface is already evident at initial diagnosis of TMJ Osteoarthritis (OA). Therefore, analyzing the bone structure will facilitate the disease diagnosis. The important step towards this analysis is the condyle segmentation. This article deals with a method to automatically segment the temporomandibular joint condyle out of cone beam CT (CBCT) scans. In the proposed method we denoise images and apply 3D active contour and morphological operations to segment the condyle. The experimental results show that the proposed method yields the Dice score of 0.9461 with the standards deviation of 0.0888 when it is applied on CBCT images of 95 patients. This segmentation will allow large datasets to be analyzed more efficiently towards data sciences and machine learning approaches for disease classification.},
keywords = {AAOF, Adolescents, anterior openbite, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, Peer Assessment Rating Index, Posttreatment, teaching},
pubstate = {published},
tppubtype = {article}
}
K, Currie; H, Oh; C, Flores-Mir; M, Lagravere
CBCT assessment of posterior cranial base and surrounding structures in orthodontically treated adolescents. Int Orthod. Journal Article
In: Int Orthod, vol. 2, pp. 266-275, 2020.
Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, Mandibular fixed retainer, Mandibular remodeling, x-ray
@article{Currie2020,
title = {CBCT assessment of posterior cranial base and surrounding structures in orthodontically treated adolescents. Int Orthod.},
author = {Currie K and Oh H and Flores-Mir C and Lagravere M},
url = {https://pubmed.ncbi.nlm.nih.gov/32044297/},
doi = {10.1016/j.ortho.2020.01.004},
year = {2020},
date = {2020-06-18},
urldate = {2020-06-18},
journal = {Int Orthod},
volume = {2},
pages = {266-275},
abstract = { Understanding craniofacial growth and development is important for accurate diagnosis, treatment planning and post-treatment evaluation of orthodontic cases. Paramount to this is knowledge of the cranial base growth and development, since it is the foundation upon which the remaining facial structures develop. The purpose of this study was to analyse different anatomical structures in the posterior cranial base and determine its changes during the adolescent years (13-15 year of age) using CBCT.},
keywords = {AAOF, Cone-beam computed tomography, Cranial base, Mandibular fixed retainer, Mandibular remodeling, x-ray},
pubstate = {published},
tppubtype = {article}
}
J, Bianchi; Ruellas, A C De Oliveira; Goncalves, J R; Paniagua, B; Prieto, J C; Martin, S; Tengfei, Li; Hongtu, Zhu; James, S; William, G; Erika, B; Fabiana, Soki; Marilia, Yatabe; Lawrence, Ashman; David, W; Reza, Soroushmehr; Kayvan, N; Cevidanes, L H S
Osteoarthritis of the Temporomandibular Joint can be diagnosed earlier using biomarkers and machine learning. Journal Article
In: Scientific Reports, vol. 10, no. 1, pp. 8012, 2020.
Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, craniofacial, hyperdivergent, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment, technique, vertical control, x-ray
@article{Bianchi2020b,
title = {Osteoarthritis of the Temporomandibular Joint can be diagnosed earlier using biomarkers and machine learning.},
author = {Bianchi J and A C De Oliveira Ruellas and J R Goncalves and B Paniagua and J C Prieto and S Martin and Li Tengfei and Zhu Hongtu and S James and G William and B Erika and Soki Fabiana and Yatabe Marilia and Ashman Lawrence and W David and Soroushmehr Reza and N Kayvan and L H S Cevidanes },
url = {https://pubmed.ncbi.nlm.nih.gov/32415284/},
doi = {10.1038/s41598-020-64942-0},
year = {2020},
date = {2020-05-15},
urldate = {2020-05-15},
journal = {Scientific Reports},
volume = {10},
number = {1},
pages = {8012},
abstract = {After chronic low back pain, Temporomandibular Joint (TMJ) disorders are the second most common musculoskeletal condition affecting 5 to 12% of the population, with an annual health cost estimated at $4 billion. Chronic disability in TMJ osteoarthritis (OA) increases with aging, and the main goal is to diagnosis before morphological degeneration occurs. Here, we address this challenge using advanced data science to capture, process and analyze 52 clinical, biological and high-resolution CBCT (radiomics) markers from TMJ OA patients and controls. We tested the diagnostic performance of four machine learning models: Logistic Regression, Random Forest, LightGBM, XGBoost. Headaches, Range of mouth opening without pain, Energy, Haralick Correlation, Entropy and interactions of TGF-β1 in Saliva and Headaches, VE-cadherin in Serum and Angiogenin in Saliva, VE-cadherin in Saliva and Headaches, PA1 in Saliva and Headaches, PA1 in Saliva and Range of mouth opening without pain; Gender and Muscle Soreness; Short Run Low Grey Level Emphasis and Headaches, Inverse Difference Moment and Trabecular Separation accurately diagnose early stages of this clinical condition. Our results show the XGBoost + LightGBM model with these features and interactions achieves the accuracy of 0.823, AUC 0.870, and F1-score 0.823 to diagnose the TMJ OA status. Thus, we expect to boost future studies into osteoarthritis patient-specific therapeutic interventions, and thereby improve the health of articular joints.},
keywords = {AAOF, Cone-beam computed tomography, Cranial base, craniofacial, hyperdivergent, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment, technique, vertical control, x-ray},
pubstate = {published},
tppubtype = {article}
}
Bianchi, J; Goncalves, J R; de Oliveira Ruellas, A C; Ashman, L M; Vimort, J B; Yatabe, M; Paniagua, B; Hernandez, P; Benavides, E; Soki, F N; Loshida, M; Cevidanes, L H S
Quantitative bone imaging biomarkers to diagnose temporomandibular joint osteoarthritis Journal Article
In: International Journal of Oral and Maxillofacial Surgery, vol. 50, no. 2, pp. 227-235, 2020.
Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, Growth, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, pressure tension, technique
@article{Bianchi2020,
title = {Quantitative bone imaging biomarkers to diagnose temporomandibular joint osteoarthritis},
author = {J Bianchi and J R Goncalves and A C de Oliveira Ruellas and L M Ashman and J B Vimort and M Yatabe and B Paniagua and P Hernandez and E Benavides and F N Soki and M Loshida and L H S Cevidanes},
url = {https://www.sciencedirect.com/science/article/pii/S0901502720301636#:~:text=%20Quantitative%20bone%20imaging%20biomarkers%20to%20diagnose%20temporomandibular,This%20study%20followe...%204%20References.%20%20More%20},
doi = {0.1016/j.ijom.2020.04.018},
year = {2020},
date = {2020-04-28},
urldate = {2020-04-28},
journal = {International Journal of Oral and Maxillofacial Surgery},
volume = {50},
number = {2},
pages = {227-235},
abstract = {Bone degradation of the condylar surface is seen in temporomandibular joint osteoarthritis (TMJ OA); however, the initial changes occur in the subchondral bone. This cross-sectional study was performed to evaluate 23 subchondral bone imaging biomarkers for TMJ OA. The sample consisted of high-resolution cone beam computed tomography scans of 84 subjects, divided into two groups: TMJ OA (45 patients with TMJ OA) and control (39 asymptomatic subjects). Six regions of each mandibular condyle scan were extracted for computation of five bone morphometric and 18 grey-level texture-based variables. The groups were compared using the Mann–Whitney U-test, and the receiver operating characteristics (ROC) curve was determined for each variable that showed a statically significance difference. The results showed statistically significant differences in the subchondral bone microstructure in the lateral and central condylar regions between the control and TMJ OA groups (P < 0.05). The area under the ROC curve (AUC) for these variables was between 0.620 and 0.710. In conclusion, 13 imaging bone biomarkers presented an acceptable diagnostic performance for the diagnosis of TMJ OA, indicating that the texture and geometry of the subchondral bone microarchitecture may be useful for quantitative grading of the disease.},
keywords = {AAOF, Cone-beam computed tomography, Cranial base, Growth, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, pressure tension, technique},
pubstate = {published},
tppubtype = {article}
}
Hardin, A; Valiathan, M; Oh, H; Knigge, R; McNulty, K; Leary, E; Duren, D; Sherwood, R
Clinical implications of age-related change of the mandibular plane angle. Journal Article
In: Orthod Craniofac Res, vol. 1, pp. 50-58, 2020.
Abstract | Links | BibTeX | Tags: Adolescents, Cone-beam computed tomography, Cranial base, craniofacial, fixed appliances, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, vertical control
@article{Hardin2020,
title = {Clinical implications of age-related change of the mandibular plane angle. },
author = {A Hardin and M Valiathan and H Oh and R Knigge and K McNulty and E Leary and D Duren and R Sherwood},
url = {https://pubmed.ncbi.nlm.nih.gov/31465622/},
doi = {10.1111/ocr.12342},
year = {2020},
date = {2020-02-23},
urldate = {2020-02-23},
journal = {Orthod Craniofac Res},
volume = {1},
pages = {50-58},
abstract = {To identify trajectories of ontogenetic change in the mandibular plane angle (MPA) and to describe the influence of sex and other factors on MPA during growth.},
keywords = {Adolescents, Cone-beam computed tomography, Cranial base, craniofacial, fixed appliances, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, vertical control},
pubstate = {published},
tppubtype = {article}
}
Joy, A; Park, J; Chambers, D; Oh, H
Airway and cephalometric changes in adult orthodontic patients after premolar extractions. Journal Article
In: Angle Orthod, vol. 90, no. 1, pp. 39-46, 2020.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, ariway, Cranial base, hyperdivergent, Mandibular fixed retainer, vertical control
@article{Joy2020,
title = {Airway and cephalometric changes in adult orthodontic patients after premolar extractions.},
author = {A Joy and J Park and D Chambers and H Oh},
url = {https://pubmed.ncbi.nlm.nih.gov/31403835/#:~:text=Airway%20and%20cephalometric%20changes%20in%20adult%20orthodontic%20patients,measures%20in%20the%20nasopharynx%2C%20retropalatal%2C%20or%20retroglossal%20regions.},
doi = {10.2319/021019-92.1},
year = {2020},
date = {2020-01-00},
urldate = {2020-01-00},
journal = {Angle Orthod},
volume = {90},
number = {1},
pages = {39-46},
abstract = {To examine changes in the airway and cephalometric measurements associated with orthodontic treatment of adults with and without premolar extractions. The study investigated whether extractions had a direct or indirect effect on the airway and examined selected skeletal and dental features.},
keywords = {AAOF, Adolescents, ariway, Cranial base, hyperdivergent, Mandibular fixed retainer, vertical control},
pubstate = {published},
tppubtype = {article}
}
2019
J, Park; Baumrind, S; S, Curry; S, Carlson; Oh, H
Reliability of 3D dental and skeletal landmarks on CBCT images. Journal Article
In: Angle Orthod, vol. 89, no. 5, pp. 758-767, 2019.
Abstract | Links | BibTeX | Tags: AAOF, Cranial base, Discrepency Index, extraction, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, Peer Assessment Rating Index
@article{Park2019,
title = {Reliability of 3D dental and skeletal landmarks on CBCT images.},
author = {Park J and S Baumrind and Curry S and Carlson S and H Oh},
url = {https://pubmed.ncbi.nlm.nih.gov/30883187/},
doi = {10.2319/082018-612.1},
year = {2019},
date = {2019-09-00},
journal = {Angle Orthod},
volume = {89},
number = {5},
pages = {758-767},
abstract = {To quantify reliability of three-dimensional skeletal landmarks and a comprehensive set of dental landmarks in cone-beam computed tomography (CBCT) and to determine the shapes of envelope of error.},
keywords = {AAOF, Cranial base, Discrepency Index, extraction, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, Peer Assessment Rating Index},
pubstate = {published},
tppubtype = {article}
}
Daniel, P O R; J, Bianchi; Jaqueline, I; Larry, M W; Joao, R G
Cone-beam computed tomography airway measurements: Can we trust them? Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 156, no. 1, pp. 53-60, 2019.
Abstract | Links | BibTeX | Tags: Adolescents, Cone-beam computed tomography, Cranial base, Discrepency Index, fixed appliances, Growth, hyperdivergent, Mandibular fixed retainer, retrospective
@article{Ryan2019,
title = {Cone-beam computed tomography airway measurements: Can we trust them?},
author = {P O R Daniel and Bianchi J and I Jaqueline and M W Larry and R G Joao },
url = {https://pubmed.ncbi.nlm.nih.gov/31256838/},
doi = {10.1016/j.ajodo.2018.07.024},
year = {2019},
date = {2019-07-00},
urldate = {2019-07-00},
journal = {Am J Orthod Dentofacial Orthop},
volume = {156},
number = {1},
pages = {53-60},
abstract = {Pharyngeal airway space (PAS) assessment has been used in the past for a better understanding of orthodontic and surgical outcomes; however, this analysis could be unreliable. Our objective was to evaluate possible changes in the PAS reading in the same patient from their consecutive cone-beam computed tomography (CBCT) scans.},
keywords = {Adolescents, Cone-beam computed tomography, Cranial base, Discrepency Index, fixed appliances, Growth, hyperdivergent, Mandibular fixed retainer, retrospective},
pubstate = {published},
tppubtype = {article}
}
Sam, A; Currie, K; Oh, H; Flores-Mir, C; Lagravere-Vich, M
Reliability of different 3D cephalometric landmarks in CBCT: A systematic review. Journal Article
In: Angle Orthod, vol. 89, no. 2, pp. 317-332, 2019.
Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, Cone-beam computed tomography, Cranial base, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling
@article{Sam2019,
title = {Reliability of different 3D cephalometric landmarks in CBCT: A systematic review.},
author = {A Sam and K Currie and H Oh and C Flores-Mir and M Lagravere-Vich},
url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8120873/},
doi = {10.2319/042018-302.1},
year = {2019},
date = {2019-03-00},
urldate = {2019-03-00},
journal = {Angle Orthod},
volume = {89},
number = {2},
pages = {317-332},
abstract = {Conventional two-dimensional (2D) cephalometric radiography is an integral part of orthodontic patient diagnosis and treatment planning. One must be mindful of its limitations as it indeed is a 2D representation of a vaster three-dimensional (3D) object. Issues with projection errors, landmark identification, and measurement inaccuracies impose significant limitations, which may now be overcome with the advent of cone-beam computed tomography (CBCT). A systematic review of the reliability of different 3D cephalometric landmarks in CBCT imaging was conducted.},
keywords = {AAOF, anterior openbite, Cone-beam computed tomography, Cranial base, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling},
pubstate = {published},
tppubtype = {article}
}
Garnett, B; Mahod, K; Nguyen, M; Al-Khateeb, A; Liu, S; Boyd, R; Oh, H
Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances. Journal Article
In: Angle Orthodontist, vol. 89, no. 1, pp. 3-9, 2019.
Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, fixed appliances, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, mapping, open bite, Peer Assessment Rating Index, Posttreatment, research, x-ray
@article{Garnett2019,
title = {Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances.},
author = {B Garnett and K Mahod and M Nguyen and A Al-Khateeb and S Liu and R Boyd and H Oh},
url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8137127/},
doi = {10.2319/010418-4.1},
year = {2019},
date = {2019-01-00},
journal = {Angle Orthodontist},
volume = {89},
number = {1},
pages = {3-9},
abstract = {To compare fixed appliances and clear aligner therapy in correcting anterior open bite and in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns.},
keywords = {AAOF, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, fixed appliances, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, mapping, open bite, Peer Assessment Rating Index, Posttreatment, research, x-ray},
pubstate = {published},
tppubtype = {article}
}
2017
J, Bianchi; Dos, S P Ary; Jaqueline, I; Daniel, P O R; Joao, R G
Effect of temporomandibular joint articular disc repositioning on anterior open-bite malocclusion: An orthodontic-surgical approach Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 152, no. 6, pp. 848-858, 2017.
Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, orthodontic, retrospective, teaching, vertical control
@article{Bianchi2017,
title = {Effect of temporomandibular joint articular disc repositioning on anterior open-bite malocclusion: An orthodontic-surgical approach},
author = {Bianchi J and S P Ary Dos and I Jaqueline and P O R Daniel and R G Joao },
url = {https://www.sciencedirect.com/science/article/pii/S0889540617306121},
doi = {10.1016/j.ajodo.2016.09.032},
year = {2017},
date = {2017-12-00},
urldate = {2017-12-00},
journal = {Am J Orthod Dentofacial Orthop},
volume = {152},
number = {6},
pages = {848-858},
abstract = {An anterior open bite is a challenge to orthodontic treatment; it has a multifactorial etiology and a wide range ofintervention options. Temporomandibular joint (TMJ) disorders are a risk factor for the development of malocclu-sions such as the anterior open bite, especially in patients who have TMJ osteoarthritis with disc displacement.Articular disc repositioning surgery is an available option for treating this pathology, and it contributes to main-taining the condyles in a more stable position. The aim of this article was to report the case of a 20-year-oldwoman diagnosed with anterior open bite and TMJ osteoarthritis with bilateral disc displacement. The patientreceived both orthodontic treatment and TMJ disc repositioning surgery. Cone-beam computed tomographywas used to create 3-dimensional models of the condyles with regional superposition, and assessment ofbone remodeling was performed at different time intervals. Complete orthodontic and surgical treatment timewas approximately 12 months. The results provided a stable correction of the patient's anterior open bite witha 2-year follow-up and favorable bone remodeling of the condyles due to functional improvement of the TMJ.(Am J Orthod Dentofacial Orthop 2017;152:848-58)},
keywords = {AAOF, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, orthodontic, retrospective, teaching, vertical control},
pubstate = {published},
tppubtype = {article}
}
Currie, K; Sawchuk, D; Saltaji, H; Oh, H; Flores-Mir, C; Lagravere-Vich, M
Posterior cranial base natural growth and development: A systematic review. Journal Article
In: Angle Orthodontist, vol. 87, no. 6, pp. 897-910, 2017.
Abstract | Links | BibTeX | Tags: AAOF, adult, Cranial base, extraction, fixed appliances, Growth, mandibular asymmetry, Mandibular fixed retainer, Posttreatment, pressure tension, research, retrospective, vertical control, x-ray
@article{Currie2017b,
title = {Posterior cranial base natural growth and development: A systematic review. },
author = {K Currie and D Sawchuk and H Saltaji and H Oh and C Flores-Mir and M Lagravere-Vich},
url = {https://pubmed.ncbi.nlm.nih.gov/28737426/},
doi = {10.2319/032717-218.1},
year = {2017},
date = {2017-11-00},
journal = {Angle Orthodontist},
volume = {87},
number = {6},
pages = {897-910},
abstract = {To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba).},
keywords = {AAOF, adult, Cranial base, extraction, fixed appliances, Growth, mandibular asymmetry, Mandibular fixed retainer, Posttreatment, pressure tension, research, retrospective, vertical control, x-ray},
pubstate = {published},
tppubtype = {article}
}
Xu, Y; Oh, H; Lagravere-Vich, M
Malocclusion Class II-Division 1 skeletal and dental relationships measured by Cone-Beam Computed Tomography. Journal Article
In: International Journal of Orthodontics, vol. 15, no. 3, pp. 365-387, 2017.
Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, pressure tension, retrospective
@article{Xu2017,
title = {Malocclusion Class II-Division 1 skeletal and dental relationships measured by Cone-Beam Computed Tomography. },
author = {Y Xu and H Oh and M Lagravere-Vich},
url = {https://www.sciencedirect.com/science/article/pii/S1761722717300621},
doi = {10.1016/j.ortho.2017.06.014},
year = {2017},
date = {2017-09-00},
journal = {International Journal of Orthodontics},
volume = {15},
number = {3},
pages = {365-387},
abstract = {The purpose of this study was to locate traditionally-used landmarks in two-dimensional (2D) images and newly-suggested ones in three-dimensional (3D) images (cone-beam computer tomographies [CBCTs]) and determine possible relationships between them to categorize patients with Class II-1 malocclusion.},
keywords = {AAOF, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, pressure tension, retrospective},
pubstate = {published},
tppubtype = {article}
}
Hwang, Hyeon-Shik; Oh, Min-Hee; Oh, Hee-Kyun; Oh, Heesoo
Surgery-first approach in correcting skeletal Class III malocclusion with mandibular asymmetry Journal Article
In: American Journal of Orthodontics and Dentofacial Orthopedics, vol. 152, no. 2, pp. 255-267, 2017.
Abstract | Links | BibTeX | Tags: AAOF, adult, Class III, Cranial base, Discrepency Index, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, mapping, open bite, orthodontic, surgery-first
@article{Hwang2017,
title = {Surgery-first approach in correcting skeletal Class III malocclusion with mandibular asymmetry},
author = {Hyeon-Shik Hwang and Min-Hee Oh and Hee-Kyun Oh and Heesoo Oh},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Surgery-first-approach-in-correctingskeletal-CLass-III_AJODO-2017.pdf},
doi = {10.1016/j.ajodo.2014.10.040},
year = {2017},
date = {2017-08-01},
urldate = {2017-08-01},
journal = {American Journal of Orthodontics and Dentofacial Orthopedics},
volume = {152},
number = {2},
pages = {255-267},
abstract = {This case report describes a surgical orthodontic case that used the recently introduced surgery-first approach to correct a severe skeletal Class III malocclusion. A 19-year-old woman presented with severe mandibular prognathism and facial asymmetry; she had been waiting for growth completion in order to pursue surgical correction. After prediction of the postsurgical tooth movement and surgical simulation, 2-jaw surgery that included maxillary advancement and differential mandibular setback was performed using a surgery-first approach. Immediate facial improvement was achieved and postsurgical orthodontic treatment was efficiently carried out. The total treatment time was 16 months. The patient's facial appearance improved significantly and a stable surgical orthodontic outcome was obtained. (Am J Orthod Dentofacial Orthop 2017;152:255-67) },
keywords = {AAOF, adult, Class III, Cranial base, Discrepency Index, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, mapping, open bite, orthodontic, surgery-first},
pubstate = {published},
tppubtype = {article}
}
Lui, S; Oh, H; Chambers, D; Weng, X; Chen, Q; Baumrind, S; Xu, T
In: Orthodontics and Craniofacial Research, vol. 20, no. 3, pp. 140-145, 2017.
Abstract | Links | BibTeX | Tags: AAOF, extraction, fixed appliances, hyperdivergent, malocclusion severity, Mandibular fixed retainer, Mandibular remodeling, Posttreatment, retrospective, technique, x-ray
@article{Liu2017b,
title = {Validity and reliability of the ABO Discrepancy Index and PAR Index (Peer Assessment Rating) for evaluating malocclusion severity among Chinese orthodontists.},
author = {S Lui and H Oh and D Chambers and X Weng and Q Chen and S Baumrind and T Xu},
url = {https://pubmed.ncbi.nlm.nih.gov/28670875/},
doi = {10.1111/ocr.12195},
year = {2017},
date = {2017-08-00},
journal = {Orthodontics and Craniofacial Research},
volume = {20},
number = {3},
pages = {140-145},
abstract = {To assess the validity of the American Board of Orthodontics Discrepancy Index (ABO-DI) and Peer Assessment Rating (PAR) Index in evaluating malocclusion severity in Chinese orthodontic patients.},
keywords = {AAOF, extraction, fixed appliances, hyperdivergent, malocclusion severity, Mandibular fixed retainer, Mandibular remodeling, Posttreatment, retrospective, technique, x-ray},
pubstate = {published},
tppubtype = {article}
}
Hwang, HS; Oh, MH; Oh, HK
Surgery-first approach in correcting skeletal Class III malocclusion with mandibular asymmetry. Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 152, no. 2, pp. 255-267, 2017.
Abstract | Links | BibTeX | Tags: AAOF, adult, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Cranial base, Discrepency Index, fixed appliances, malocclusion severity, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment, pressure tension, retrospective
@article{Hwang2017b,
title = {Surgery-first approach in correcting skeletal Class III malocclusion with mandibular asymmetry. },
author = {HS Hwang and MH Oh and HK Oh},
url = {https://pubmed.ncbi.nlm.nih.gov/28760288/},
doi = {10.1016/j.ajodo.2014.10.040},
year = {2017},
date = {2017-08-00},
journal = {Am J Orthod Dentofacial Orthop},
volume = {152},
number = {2},
pages = {255-267},
abstract = {This case report describes a surgical orthodontic case that used the recently introduced surgery-first approach to correct a severe skeletal Class III malocclusion. A 19-year-old woman presented with severe mandibular prognathism and facial asymmetry; she had been waiting for growth completion in order to pursue surgical correction. After prediction of the postsurgical tooth movement and surgical simulation, 2-jaw surgery that included maxillary advancement and differential mandibular setback was performed using a surgery-first approach. Immediate facial improvement was achieved and postsurgical orthodontic treatment was efficiently carried out. The total treatment time was 16 months. The patient's facial appearance improved significantly and a stable surgical orthodontic outcome was obtained.},
keywords = {AAOF, adult, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Cranial base, Discrepency Index, fixed appliances, malocclusion severity, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment, pressure tension, retrospective},
pubstate = {published},
tppubtype = {article}
}
Afrand, M; Oh, H; Flores-Mir, C; Lagravere-Vich, M
Growth changes in the anterior and middle cranial bases as assessed through cone-beam computed tomography in adolescents. Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 151, no. 2, pp. 342-350, 2017.
Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, orthodontic, Peer Assessment Rating Index, Posttreatment, retrospective, technique
@article{Afrand2017b,
title = {Growth changes in the anterior and middle cranial bases as assessed through cone-beam computed tomography in adolescents.},
author = {M Afrand and H Oh and C Flores-Mir and M Lagravere-Vich},
url = {https://www.sciencedirect.com/science/article/pii/S0889540616307405},
doi = {10.1016/j.ajodo.2016.02.032},
year = {2017},
date = {2017-02-00},
journal = {Am J Orthod Dentofacial Orthop},
volume = {151},
number = {2},
pages = {342-350},
abstract = {Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionallyevaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in theanterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial baseswith growth were evaluated by using the previously selected landmarks.Methods:Cone-beam computed to-mography images of 10 dry skulls were used to identify useful landmarks from different areas of the anteriorand middle cranial bases based on their reliability and accuracy. These selected landmarks were identified inthe images of an already available sample of adolescents (n560) taken at 2 time points (19 months apart)to assess dimensional changes with growth.Results:The majority of the proposed 3-dimensional landmarkswith the exception of the lesser wing of the sphenoid showed acceptable intrarater and interrater reliabilities.The distances measured between foramina and canals in the transverse dimension showed evidence ofincreases in size. However, the mean amounts of increase in these transverse distances were equal to orless than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior andposterior clinoid processes. The vertical dimensions showed evidence of some changes, but these werewithin 2% of the original distances.Conclusions:In this adolescent sample, minor growth-related changeswere observed in the anterior and middle cranial bases. The midsagittal area of the anterior cranial base(foramen caecum to presphenoid) was stable. The right and left anterior and posterior clinoid processes canbe used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017;151:342-50)},
keywords = {AAOF, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, orthodontic, Peer Assessment Rating Index, Posttreatment, retrospective, technique},
pubstate = {published},
tppubtype = {article}
}
Oh, H; Baumrind, S; Dugoni, S; Boero, R; Aubert, M; Boyd, R
A retrospective study of Class II mixed-dentition treatment. Journal Article
In: Angle Orthodontist, vol. 87, no. 1, pp. 56-67, 2017.
Abstract | Links | BibTeX | Tags: AAOF, clinical orthodontist, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, Mandibular remodeling, mapping, technique, vertical control, x-ray
@article{Oh2017,
title = {A retrospective study of Class II mixed-dentition treatment. },
author = {H Oh and S Baumrind and S Dugoni and R Boero and M Aubert and R Boyd},
url = {https://pubmed.ncbi.nlm.nih.gov/27391205/},
doi = {10.2319/012616-72.1},
year = {2017},
date = {2017-01-00},
journal = {Angle Orthodontist},
volume = {87},
number = {1},
pages = {56-67},
abstract = {To consider the effectiveness of early treatment using one mixed-dentition approach to the correction of moderate and severe Class II malocclusions.},
keywords = {AAOF, clinical orthodontist, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, Mandibular remodeling, mapping, technique, vertical control, x-ray},
pubstate = {published},
tppubtype = {article}
}
2016
Oh, Heesoo; Ma, Ning; Feng, Ping Ping; Kieu, Katherine; Boero, Roger; Dugoni, Steven; Aubert, Maryse; Chambers, David W.
Evaluation of posttreatment stability after orthodontic treatment in the mixed and permanent dentitions Journal Article
In: Angle Orthodontist, vol. 86, no. 6, pp. 1010–1018, 2016.
Abstract | Links | BibTeX | Tags: Incisor irregularity, Long-term stability, Mandibular fixed retainer, Posttreatment, Retention
@article{Oh2016,
title = {Evaluation of posttreatment stability after orthodontic treatment in the mixed and permanent dentitions},
author = {Heesoo Oh and Ning Ma and Ping Ping Feng and Katherine Kieu and Roger Boero and Steven Dugoni and Maryse Aubert and David W. Chambers},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Evaluation-of-post-treatment-changes.pdf},
year = {2016},
date = {2016-01-01},
journal = {Angle Orthodontist},
volume = {86},
number = {6},
pages = {1010–1018},
abstract = {Objective: To investigate posttreatment changes in the maxillary and mandibular arches in patients who underwent orthodontic treatment during the mixed and permanent dentitions.
Materials and Methods: The sample was collected retrospectively from three private practices and consisted of 42 patients who were at least 10 years out of orthodontic treatment. The longitudinal records of study casts and cephalometric radiographs were analyzed to quantify posttreatment changes.
Results: Minimal changes in maxillary and mandibular irregularity occurred after an average of 16.98 years from completion of treatment. More than 10 years posttreatment, approximately 81% of the maxillary anterior teeth and 88% of the mandibular anterior teeth showed clinically acceptable incisor alignment (,3.5 mm). Mandibular fixed retainers greatly aided in maintaining the stability of the mandibular incisor alignment. However, posttreatment changes in maxillary incisor irregularity did not appear to be influenced by the presence of a mandibular fixed retainer. When compared with longitudinal changes observed in untreated subjects, the increase in incisor irregularity resembled a pattern similar to the regression line of untreated subjects and seems to be entirely age related. Arch width and arch depth was consistently decreased after treatment, but the
magnitude of change was minimal at about 1 mm. No associations were found between any of the cephalometric measurements and changes in incisor irregularities.
Conclusions: Orthodontic treatment stability can be achieved and mandibular fixed retention appears to be a valuable contributor, especially in patients with further growth expected. (Angle Orthod. 2016;86:1010–1018)},
keywords = {Incisor irregularity, Long-term stability, Mandibular fixed retainer, Posttreatment, Retention},
pubstate = {published},
tppubtype = {article}
}
Materials and Methods: The sample was collected retrospectively from three private practices and consisted of 42 patients who were at least 10 years out of orthodontic treatment. The longitudinal records of study casts and cephalometric radiographs were analyzed to quantify posttreatment changes.
Results: Minimal changes in maxillary and mandibular irregularity occurred after an average of 16.98 years from completion of treatment. More than 10 years posttreatment, approximately 81% of the maxillary anterior teeth and 88% of the mandibular anterior teeth showed clinically acceptable incisor alignment (,3.5 mm). Mandibular fixed retainers greatly aided in maintaining the stability of the mandibular incisor alignment. However, posttreatment changes in maxillary incisor irregularity did not appear to be influenced by the presence of a mandibular fixed retainer. When compared with longitudinal changes observed in untreated subjects, the increase in incisor irregularity resembled a pattern similar to the regression line of untreated subjects and seems to be entirely age related. Arch width and arch depth was consistently decreased after treatment, but the
magnitude of change was minimal at about 1 mm. No associations were found between any of the cephalometric measurements and changes in incisor irregularities.
Conclusions: Orthodontic treatment stability can be achieved and mandibular fixed retention appears to be a valuable contributor, especially in patients with further growth expected. (Angle Orthod. 2016;86:1010–1018)
2010
Xu, T-M; Zhang, X; Oh, HS; Boyd, R; Korn, El; Baumrind, S
A Randomized Clinical Trial (RCT) Comparing Maxillary Molar Anchorage Loss Using Two Retraction Techniques. Journal Article
In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 138, no. 5, pp. 544-5, 2010.
Abstract | Links | BibTeX | Tags: adult, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, open bite, orthodontic, Peer Assessment Rating Index, retrospective
@article{Xu2010,
title = {A Randomized Clinical Trial (RCT) Comparing Maxillary Molar Anchorage Loss Using Two Retraction Techniques.},
author = {T-M Xu and X Zhang and HS Oh and R Boyd and El Korn and S Baumrind},
url = {https://pubmed.ncbi.nlm.nih.gov/21055588/},
doi = {10.1016/j.ajodo.2009.12.027},
year = {2010},
date = {2010-11-00},
journal = {American Journal of Orthodontics & Dentofacial Orthopedics},
volume = {138},
number = {5},
pages = {544-5},
abstract = {The objective of this pilot randomized clinical trial was to investigate the relative effectiveness of anchorage conservation of en-masse and 2-step retraction techniques during maximum anchorage treatment in patients with Angle Class I and Class II malocclusions.},
keywords = {adult, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, open bite, orthodontic, Peer Assessment Rating Index, retrospective},
pubstate = {published},
tppubtype = {article}
}
2009
Oh, HS; Korn, EL; Zhang, XY; Liu, Y; Xu, T-M; Boyd, R; Baumrind, S
In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 136, no. 6, pp. e1-14; discussion 762-3, 2009.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment
@article{Oh2009,
title = {Correlation between cephalometric and photographic measurements of facial attractiveness in Chinese and U.S. patients at the end of orthodontic treatment.},
author = {HS Oh and EL Korn and XY Zhang and Y Liu and T-M Xu and R Boyd and S Baumrind},
url = {https://pubmed.ncbi.nlm.nih.gov/19962590/},
doi = {10.1016/j.ajodo.2009.04.020},
year = {2009},
date = {2009-12-00},
journal = {American Journal of Orthodontics & Dentofacial Orthopedics},
volume = {136},
number = {6},
pages = {e1-14; discussion 762-3},
abstract = {Orthodontists rely on esthetic judgments from facial photographs. Concordance between estimates of facial attractiveness made from lateral cephalograms and those made from clinical photographs has not been determined. We conducted a preliminary examination to correlate clinicians' rankings of facial attractiveness from standardized end-of-treatment facial photographs (Photo Attractiveness Rank) with cephalometric measurements of facial attractiveness made for the same subjects at the same time.},
keywords = {AAOF, Adolescents, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment},
pubstate = {published},
tppubtype = {article}
}
Lui, Y; Korn, EL; Oh, HS; Pearson, H; Xu, T-M; Baumrind, S
Comparison of Chinese and U.S. Orthodontists' Averaged Evaluations of "Facial Attractiveness" from End-of-Treatment Facial Photographs. Journal Article
In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 135, no. 5, pp. 621-34, 2009.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, Growth, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, technique, vertical control, x-ray
@article{Liu2009,
title = {Comparison of Chinese and U.S. Orthodontists' Averaged Evaluations of "Facial Attractiveness" from End-of-Treatment Facial Photographs. },
author = {Y Lui and EL Korn and HS Oh and H Pearson and T-M Xu and S Baumrind},
url = {https://pubmed.ncbi.nlm.nih.gov/19409345/},
doi = {10.1016/j.ajodo.2007.04.039},
year = {2009},
date = {2009-05-00},
journal = {American Journal of Orthodontics & Dentofacial Orthopedics},
volume = {135},
number = {5},
pages = {621-34},
abstract = {This study continues our assessment of agreement and disagreement among 25 Chinese and 20 US orthodontists in the ranking for facial attractiveness of end-of-treatment photographs of randomly sampled growing Chinese and white orthodontic patients. The main aims of this article were to (1) measure the overall pattern of agreement between the mean rankings of US and Chinese orthodontists, and (2) measure the strength of agreement between the rankings of the US and Chinese orthodontists for each patient.},
keywords = {AAOF, Adolescents, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, Growth, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, technique, vertical control, x-ray},
pubstate = {published},
tppubtype = {article}
}
2008
Xu, T-M; Korn, EL; Liu, Y; Oh, HS; Lee, KH; Baumrind, S
"Facial Attractiveness": Ranking of End-of-Treatment Facial Photographs by Chinese and U.S. Orthodontists. Journal Article
In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 134, no. 1, pp. 74-84, 2008.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, open bite, retrospective
@article{Xu2008,
title = {"Facial Attractiveness": Ranking of End-of-Treatment Facial Photographs by Chinese and U.S. Orthodontists.},
author = {T-M Xu and EL Korn and Y Liu and HS Oh and KH Lee and S Baumrind},
url = {https://pubmed.ncbi.nlm.nih.gov/18617106/},
doi = {10.1016/j.ajodo.2006.08.023},
year = {2008},
date = {2008-07-00},
journal = {American Journal of Orthodontics & Dentofacial Orthopedics},
volume = {134},
number = {1},
pages = {74-84},
abstract = {In this study, we assessed agreement and disagreement among pairs of Chinese and US orthodontists in the ranking for "facial attractiveness" of end-of-treatment photographs of growing Chinese and white orthodontic patients.},
keywords = {AAOF, Adolescents, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, open bite, retrospective},
pubstate = {published},
tppubtype = {article}
}
2001
SK, Lee; YS, Kim; HS, Oh; KH, Yang; EC, Kim; JG, Chi
Prenatal development of the human mandible. Journal Article
In: The Anatomical Record, vol. 263, no. 3, pp. 314-25, 2001.
Abstract | Links | BibTeX | Tags: adult, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, craniofacial, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Posttreatment, pressure tension
@article{Lee2001,
title = {Prenatal development of the human mandible. },
author = {Lee SK and Kim YS and Oh HS and Yang KH and Kim EC and Chi JG},
url = {https://pubmed.ncbi.nlm.nih.gov/11455541/},
doi = {10.1002/ar.1110},
year = {2001},
date = {2001-07-01},
journal = {The Anatomical Record},
volume = {263},
number = {3},
pages = {314-25},
abstract = {In an effort to better understand the interrelationship of the growth and development pattern of the mandible and condyle, a sequential growth pattern of human mandibles in 38 embryos and 111 fetuses were examined by serial histological sections and soft X-ray views. The basic growth pattern of the mandibular body and condyle appeared in week 7 of fertilization. Histologically, the embryonal mandible originated from primary intramembranous ossification in the fibrous mesenchymal tissue around the Meckel cartilage. From this initial ossification, the ramifying trabecular bones developed forward, backward and upward, to form the symphysis, mandibular body, and coronoid process, respectively. We named this initial ossification site of embryonal mandible as the mandibular primary growth center (MdPGC). During week 8 of fertilization, the trabecular bone of the mandibular body grew rapidly to form muscular attachments to the masseter, temporalis, and pterygoid muscles. The mandible was then rapidly separated from the Meckel cartilage and formed a condyle blastema at the posterior end of linear mandibular trabeculae. The condyle blastema, attached to the upper part of pterygoid muscle, grew backward and upward and concurrent endochondral ossification resulted in the formation of the condyle. From week 14 of fertilization, the growth of conical structure of condyle became apparent on histological and radiological examinations. The mandibular body showed a conspicuous radiating trabecular growth pattern centered at the MdPGC, located around the apical area of deciduous first molar. The condyle growth showed characteristic conical structure and abundant hematopoietic tissue in the marrow. The growth of the proximal end of condyle was also approximated to the MdPGC on radiograms. Taken together, we hypothesized that the MdPGC has an important morphogenetic affect for the development of the human mandible, providing a growth center for the trabecular bone of mandibular body and also indicating the initial growth of endochondral ossification of the condyle.},
keywords = {adult, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, craniofacial, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Posttreatment, pressure tension},
pubstate = {published},
tppubtype = {article}
}
0000
C, Thereza-Bussolaro; HS, Oh; M, Lagravere; C, Flores-Mir
Pharyngeal dimensional changes in class II malocclusion treatment when using Forsus® or intermaxillary elastics - An exploratory study. Journal Article
In: Int Orthod, vol. 17, no. 4, pp. 667-677, 0000.
Abstract | Links | BibTeX | Tags: AAOF, adult, clear aligners, Cone-beam computed tomography, Cranial base, craniofacial, Mandibular fixed retainer, Mandibular remodeling, Peer Assessment Rating Index, pressure tension, research, teaching, technique, vertical control
@article{Bussolaro2019,
title = {Pharyngeal dimensional changes in class II malocclusion treatment when using Forsus® or intermaxillary elastics - An exploratory study.},
author = {Thereza-Bussolaro C and Oh HS and Lagravere M and Flores-Mir C },
url = {https://pubmed.ncbi.nlm.nih.gov/31492602/},
doi = {10.1016/j.ortho.2019.08.023},
journal = {Int Orthod},
volume = {17},
number = {4},
pages = {667-677},
abstract = {Pharyngeal airway obstruction can facilitate some forms of sleep disorder breathing (SDB) in susceptible children, especially in those having class II malocclusion. Changes in the anatomic areas surrounding the pharyngeal region during orthodontic treatment could hypothetically impact the pharyngeal airway dimensions. Management of a class II malocclusion on a growing individual with either intermaxillary elastics or different removable or fixed class II appliance designs have been proposed over the last century. The objective of this retrospective exploratory cohort study is to investigate to what extent the class II malocclusion treatment with either intermaxillary elastics (IME) or Forsus® fatigue resistance device (FFRD) leads to changes in oropharyngeal airway dimensions.},
keywords = {AAOF, adult, clear aligners, Cone-beam computed tomography, Cranial base, craniofacial, Mandibular fixed retainer, Mandibular remodeling, Peer Assessment Rating Index, pressure tension, research, teaching, technique, vertical control},
pubstate = {published},
tppubtype = {article}
}
KC, Lee; SW, Lim; Jh, Cho; H, Oh; HS, Hwang
Survival rates of mandibular fixed retainers: comparison of a tube-type retainer and conventional multistrand retainers : A prospective randomized clinical trial Journal Article
In: Journal of Orofacial Orthopedics, 2023.
@article{Oh2023c,
title = {Survival rates of mandibular fixed retainers: comparison of a tube-type retainer and conventional multistrand retainers : A prospective randomized clinical trial },
author = {Lee KC and Lim SW and Cho Jh and Oh H and Hwang HS},
url = {https://pubmed.ncbi.nlm.nih.gov/36847790/},
doi = {10.1007/s00056-023-00447-5},
year = {2023},
date = {2023-02-27},
journal = {Journal of Orofacial Orthopedics},
abstract = {Objective: The purposes of this study were to evaluate the survival rate of a tube-type mandibular fixed retainer and compare it to conventional multistrand retainers.
Materials and methods: In all, 66 patients who had completed their orthodontic treatment were enrolled in this study. They were allocated randomly to a tube-type retainer group or a 0.020 multistrand fixed retainer group. In case of the tube-type retainer, a thermoactive 0.012 NiTi was placed into 6 mini-tubes passively bonded to the anterior teeth. The patients were recalled at 1, 3, 6, 12, and 24 months after retainer placement. During the 2‑year follow-up period, any first-time failure of retainers was recorded. Kaplan-Meier survival analysis and log-rank tests were used to compare the failure rates between the two types of retainers.
Results: Of the 34 patients, 14 (41.2%) showed failure in the multistrand retainer group, whereas only 2 of 32 (6.3%) reported failure in the tube-type retainer group. There was a statistically significant difference in failure between the multistrand retainer and the tube-type retainer (log-rank test, P = 0.001). The hazard ratio was 11.937 (95% confidence interval 2.708-52.620; P = 0.005).
Conclusion: The tube-type retainer can be used with fewer concerns about recurrent retainer detachments during orthodontic retention.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Materials and methods: In all, 66 patients who had completed their orthodontic treatment were enrolled in this study. They were allocated randomly to a tube-type retainer group or a 0.020 multistrand fixed retainer group. In case of the tube-type retainer, a thermoactive 0.012 NiTi was placed into 6 mini-tubes passively bonded to the anterior teeth. The patients were recalled at 1, 3, 6, 12, and 24 months after retainer placement. During the 2‑year follow-up period, any first-time failure of retainers was recorded. Kaplan-Meier survival analysis and log-rank tests were used to compare the failure rates between the two types of retainers.
Results: Of the 34 patients, 14 (41.2%) showed failure in the multistrand retainer group, whereas only 2 of 32 (6.3%) reported failure in the tube-type retainer group. There was a statistically significant difference in failure between the multistrand retainer and the tube-type retainer (log-rank test, P = 0.001). The hazard ratio was 11.937 (95% confidence interval 2.708-52.620; P = 0.005).
Conclusion: The tube-type retainer can be used with fewer concerns about recurrent retainer detachments during orthodontic retention.
Bianchi, J; Goncalves, J Roberto; Ruellas, A Carlos De Oliveira; Bianchi, J Vierira Pastana; Ashman, LM; et al,
Radiographic interpretation using high-resolution Cbct to diagnose degenerative temporomandibular joint disease Journal Article
In: PLOS ONE, vol. 16, no. 8, pp. e0255937, 2021.
@article{Bianchi2021b,
title = {Radiographic interpretation using high-resolution Cbct to diagnose degenerative temporomandibular joint disease},
author = {J Bianchi and J Roberto Goncalves and A Carlos De Oliveira Ruellas and J Vierira Pastana Bianchi and LM Ashman and et al },
url = {https://pubmed.ncbi.nlm.nih.gov/34375354/},
doi = {10.1371/journal.pone.0255937},
year = {2021},
date = {2021-08-10},
urldate = {2021-08-10},
journal = {PLOS ONE},
volume = {16},
number = {8},
pages = {e0255937},
abstract = {The objective of this study was to use high-resolution cone-beam computed images (hr- CBCT) to diagnose degenerative joint disease in asymptomatic and symptomatic subjects using the Diagnostic Criteria for Temporomandibular Disorders DC/TMD imaging criteria. This observational study comprised of 92 subjects age-sex matched and divided into two groups: clinical degenerative joint disease (c-DJD, n = 46) and asymptomatic control group (n = 46). Clinical assessment of the DJD and high-resolution CBCT images (isotropic voxel size of 0.08mm) of the temporomandibular joints were performed for each participant. An American Board of Oral and Maxillofacial Radiology certified radiologist and a maxillofacial radiologist used the DC/TMD imaging criteria to evaluate the radiographic findings, followed by a consensus of the radiographic evaluation. The two radiologists presented a high agreement (Cohen's Kappa ranging from 0.80 to 0.87) for all radiographic findings (osteophyte, erosion, cysts, flattening, and sclerosis). Five patients from the c- DJD group did not present radiographic findings, being then classified as arthralgia. In the asymptomatic control group, 82.6% of the patients presented radiographic findings determinant of DJD and were then classified as osteoarthrosis or overdiagnosis. In conclusion, our results showed a high number of radiographic findings in the asymptomatic control group, and for this reason, we suggest that there is a need for additional imaging criteria to classify DJD properly in hr-CBCT images.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Knigge, R; McNulty, K; Oh, H; Hardin, A; Leary, E; Duren, D; Valathan, M; Sherwood, R
Geometric morphometric analysis of growth patterns among facial types. Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 160, no. 3, pp. 430-441, 2021.
@article{Knigge2020,
title = {Geometric morphometric analysis of growth patterns among facial types. },
author = {R Knigge and K McNulty and H Oh and A Hardin and E Leary and D Duren and M Valathan and R Sherwood},
url = {https://www.sciencedirect.com/science/article/pii/S0889540621003486?via%3Dihub},
doi = {10.1016/j.ajodo.2020.04.038},
year = {2021},
date = {2021-06-23},
urldate = {2021-06-23},
journal = {Am J Orthod Dentofacial Orthop},
volume = {160},
number = {3},
pages = {430-441},
abstract = {Extreme patterns of vertical facial divergence are of great importance to clinicians because of their association with dental malocclusion and functional problems of the orofacial complex. Understanding the growth patterns associated with vertical facial divergence is critical for clinicians to provide optimal treatment. This study evaluates and compares growth patterns from childhood to adulthood among 3 classifications of vertical facial divergence using longitudinal, lateral cephalograms from the Craniofacial Growth Consortium Study.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Hardin, A M; Knigge, R P; Oh, H; et al,
Estimating craniofacial growth cessation: Comparison of asymptote- and rate-based methods Journal Article
In: The Cleft Palate-Craniofacial Journal, 2021.
@article{Hardin2021,
title = {Estimating craniofacial growth cessation: Comparison of asymptote- and rate-based methods},
author = {A M Hardin and R P Knigge and H Oh and et al},
url = {https://journals.sagepub.com/doi/full/10.1177/10556656211002675},
doi = {10.1177/10556656211002675},
year = {2021},
date = {2021-05-17},
urldate = {2021-05-17},
journal = {The Cleft Palate-Craniofacial Journal},
abstract = {To identify differences between asymptote- and rate-based methods for estimating age and size at growth cessation in linear craniofacial measurements.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Cong, A; Massaro, C; Bianchi, J; Ruellas, ACDO; et al,
Dental long axes using digital dental models compared to cone-beam computed tomography. Journal Article
In: Orthod Cranifac Res, 2021.
@article{Cong2021,
title = {Dental long axes using digital dental models compared to cone-beam computed tomography.},
author = {A Cong and C Massaro and J Bianchi and ACDO Ruellas and et al},
url = {https://onlinelibrary.wiley.com/doi/10.1111/ocr.12489},
doi = {10.1111/ocr.12489},
year = {2021},
date = {2021-05-09},
urldate = {2021-05-09},
journal = {Orthod Cranifac Res},
abstract = {Standard methods of evaluating tooth long axes are not comparable (digital dental models [DDMs], panoramic and cephalometric radiographs) or expose patients to more radiation (cone-beam computed tomography [CBCT]). This study aimed to compare angular changes in tooth long axes using DDMs vs using CBCTs. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Parizotto, JOL; Peixoto, AP; Borsato, KT; Bianchi, J; et al,
Craniofacial and airway morphology of individuals with oculoauriculovertebral spectrum. Journal Article
In: Orthodontics & Craniofacial Research, 2021.
@article{Parizotto2021,
title = {Craniofacial and airway morphology of individuals with oculoauriculovertebral spectrum.},
author = {JOL Parizotto and AP Peixoto and KT Borsato and J Bianchi and et al},
url = {https://pubmed.ncbi.nlm.nih.gov/33713375/},
doi = {10.1111/ocr.12483},
year = {2021},
date = {2021-03-13},
urldate = {2021-03-13},
journal = {Orthodontics & Craniofacial Research},
abstract = {The objectives of this study were to characterize the craniofacial and airway morphology of oculo-auriculo-vertebral spectrum (OAVS) individuals using computed tomography (CT) examination.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Boubolo, Louis; Dumont, Maxime; Brosset, Serge; Bianchi, Jonas; Ruellas, Antonio; Gurgel, Marcela; Massaro, Camila; Castillo, Aron Aliaga Del; Ioshida, Marcos; Yatabe, Marilia; Benavides, Erika; Rios, Hector; Soki, Fabiana; Neiva, Gisele; Paniagua, Beatriz; Cevidanes, Lucia; Styner, Martin; Prieto, Juan Carlos
FlyBy CNN: a 3D surface segmentation framework Journal Article
In: Proc. SPIE 11596, Medical Imaging 2021: Image Processing, 115962B , 2021.
@article{Boubolo2021,
title = {FlyBy CNN: a 3D surface segmentation framework},
author = {Louis Boubolo and Maxime Dumont and Serge Brosset and Jonas Bianchi and Antonio Ruellas and Marcela Gurgel and Camila Massaro and Aron Aliaga Del Castillo and Marcos Ioshida and Marilia Yatabe and Erika Benavides and Hector Rios and Fabiana Soki and Gisele Neiva and Beatriz Paniagua and Lucia Cevidanes and Martin Styner and Juan Carlos Prieto},
url = {https://pubmed.ncbi.nlm.nih.gov/33758460/},
doi = {10.1117/12.2582205},
year = {2021},
date = {2021-02-15},
journal = {Proc. SPIE 11596, Medical Imaging 2021: Image Processing, 115962B },
abstract = {In this paper, we present FlyBy CNN, a novel deep learning based approach for 3D shape segmentation. FlyByCNN consists of sampling the surface of the 3D object from different view points and extracting surface features such as the normal vectors. The generated 2D images are then analyzed via 2D convolutional neural networks such as RUNETs. We test our framework in a dental application for segmentation of intra-oral surfaces. The RUNET is trained for the segmentation task using image pairs of surface features and image labels as ground truth. The resulting labels from each segmented image are put back into the surface thanks to our sampling approach that generates 1-1 correspondence of image pixels and triangles in the surface model. The segmentation task achieved an accuracy of 0.9.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Brosset, Serge; Dumont, Maxime; Cevidanes, Lucia; Soroushmehr, Reza; Bianchi, Jonas; Gurgel, Marcela L; Deleat-besson, Romain; Le, Celia; Ruellas, Antonio; Yatabe, Marilia; Rosas, Liliane; Goncalves, Joao; Najarian, Kayvan; Gryak, Jonathan; Paniagua, Beatriz; Styner, Martin; Prieto, Juan Carlos
"Web infrastructure for data management, storage and computation", Proc. SPIE 11600, Journal Article
In: Proc SPIE 11600, Medical Imaging 2021: Biomedical Applications in Molecular, Structural, and Functional Imaging, 1166001N, 2021.
@article{Brosset2021,
title = {"Web infrastructure for data management, storage and computation", Proc. SPIE 11600,},
author = {Serge Brosset and Maxime Dumont and Lucia Cevidanes and Reza Soroushmehr and Jonas Bianchi and Marcela L Gurgel and Romain Deleat-besson and Celia Le and Antonio Ruellas and Marilia Yatabe and Liliane Rosas and Joao Goncalves and Kayvan Najarian and Jonathan Gryak and Beatriz Paniagua and Martin Styner and Juan Carlos Prieto},
url = {https://www.researchgate.net/publication/349303820_Web_Infrastructure_for_Data_Management_Storage_and_Computation},
doi = {10.1117/12.2582283},
year = {2021},
date = {2021-02-14},
journal = {Proc SPIE 11600, Medical Imaging 2021: Biomedical Applications in Molecular, Structural, and Functional Imaging, 1166001N},
abstract = {The Data Storage for Computation and Integration (DSCI) proposes management innovations for web-based secure data storage, algorithms deployment, and task execution. Its architecture allows inclusion of plugins for upload, browsing, sharing, and task execution in remote computing grids. Here, we demonstrate the DSCI implementation and the deployment of Image processing tools (TMJSeg), machine learning algorithms (MandSeg, DentalModelSeg), and advanced statistical packages (Multivariate Functional Shape Data Analysis, MFSDA), with data transfer and task execution handled by the clusterpost plug-in. Due to its comprehensive web-based design, local software installation is no longer required. The DSCI aims to enable and maintain a distributed computing and collaboration environment across multi-site clinical centers for the data processing of multisource features such as clinical, biological markers, volumetric images, and 3D surface models, with particular emphasis on analytics for temporomandibular joint osteoarthritis (TMJ OA).},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sherwood, R; Oh, H; Valiathan, M; McNulty, K; Duren, D; Knigge, R; Hardin, A; Holzhauser, C; Middleton, K
Bayesian Approach to Longitudinal Craniofacial Growth: The Craniofacial Growth Consortium Study. Journal Article
In: American Association of Orthodontists Foundation, 2020.
@article{Sherwood2020,
title = {Bayesian Approach to Longitudinal Craniofacial Growth: The Craniofacial Growth Consortium Study.},
author = {R Sherwood and H Oh and M Valiathan and K McNulty and D Duren and R Knigge and A Hardin and C Holzhauser and K Middleton},
url = {https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.24520},
doi = {10.1002/ar.24520},
year = {2020},
date = {2020-10-04},
urldate = {2020-10-04},
journal = {American Association of Orthodontists Foundation},
abstract = {Early in the 20th century, a series of studies were initiated across North America to investigate and characterize childhood growth. The Craniofacial Growth Consortium Study (CGCS) combines craniofacial records from six of those growth studies (15,407 lateral cephalograms from 1,913 individuals; 956 females, 957 males, primarily European descent). Standard cephalometric points collected from the six studies in the CGCS allows direct comparison of craniofacial growth patterns across six North American locations. Three assessors collected all cephalometric points and the coordinates were averaged for each point. Twelve measures were calculated from the averaged coordinates. We implemented a multilevel double logistic equation to estimate growth trajectories fitting each trait separately by sex. Using Bayesian inference, we fit three models for each trait with different random effects structures to compare differences in growth patterns among studies. The models successfully identified important growth milestones (e.g., age at peak growth velocity, age at cessation of growth) for most traits. In a small number of cases, these milestones could not be determined due to truncated age ranges for some studies and slow, steady growth in some measurements. Results demonstrate great similarity among the six growth studies regarding craniofacial growth milestone estimates and the overall shape of the growth curve. These similarities suggest minor variation among studies resulting from differences in protocol, sample, or possible geographic variation. The analyses presented support combining the studies into the CGCS without substantial concerns of bias. The CGCS, therefore, provides an unparalleled opportunity to examine craniofacial growth from childhood into adulthood.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Serge, B; Maxime, D; Bianchi, J; Antonio, R; Lucia, C; Marilia, Y; Joao, G; Erika, C; Fabiana, S; Beatriz, P; Juan, P; Kayvan, N; Jonathan, G; Reza, S
3D Auto-Segmentation of Mandibular Condyles Journal Article
In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), pp. 1270-1273, 2020.
@article{Brosset2020,
title = {3D Auto-Segmentation of Mandibular Condyles},
author = {B Serge and D Maxime and J Bianchi and R Antonio and C Lucia and Y Marilia and G Joao and C Erika and S Fabiana and P Beatriz and P Juan and N Kayvan and G Jonathan and S Reza },
url = {https://pubmed.ncbi.nlm.nih.gov/33018219/},
doi = {10.1109/EMBC44109.2020.9175692},
year = {2020},
date = {2020-07-00},
urldate = {2020-07-00},
journal = {2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)},
pages = {1270-1273},
abstract = {Temporomandibular joints (TMJ) like a hinge connect the jawbone to the skull. TMJ disorders could cause pain in the jaw joint and the muscles controlling jaw movement. However, the disease cannot be diagnosed until it becomes symptomatic. It has been shown that bone resorption at the condyle articular surface is already evident at initial diagnosis of TMJ Osteoarthritis (OA). Therefore, analyzing the bone structure will facilitate the disease diagnosis. The important step towards this analysis is the condyle segmentation. This article deals with a method to automatically segment the temporomandibular joint condyle out of cone beam CT (CBCT) scans. In the proposed method we denoise images and apply 3D active contour and morphological operations to segment the condyle. The experimental results show that the proposed method yields the Dice score of 0.9461 with the standards deviation of 0.0888 when it is applied on CBCT images of 95 patients. This segmentation will allow large datasets to be analyzed more efficiently towards data sciences and machine learning approaches for disease classification.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
K, Currie; H, Oh; C, Flores-Mir; M, Lagravere
CBCT assessment of posterior cranial base and surrounding structures in orthodontically treated adolescents. Int Orthod. Journal Article
In: Int Orthod, vol. 2, pp. 266-275, 2020.
@article{Currie2020,
title = {CBCT assessment of posterior cranial base and surrounding structures in orthodontically treated adolescents. Int Orthod.},
author = {Currie K and Oh H and Flores-Mir C and Lagravere M},
url = {https://pubmed.ncbi.nlm.nih.gov/32044297/},
doi = {10.1016/j.ortho.2020.01.004},
year = {2020},
date = {2020-06-18},
urldate = {2020-06-18},
journal = {Int Orthod},
volume = {2},
pages = {266-275},
abstract = { Understanding craniofacial growth and development is important for accurate diagnosis, treatment planning and post-treatment evaluation of orthodontic cases. Paramount to this is knowledge of the cranial base growth and development, since it is the foundation upon which the remaining facial structures develop. The purpose of this study was to analyse different anatomical structures in the posterior cranial base and determine its changes during the adolescent years (13-15 year of age) using CBCT.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
J, Bianchi; Ruellas, A C De Oliveira; Goncalves, J R; Paniagua, B; Prieto, J C; Martin, S; Tengfei, Li; Hongtu, Zhu; James, S; William, G; Erika, B; Fabiana, Soki; Marilia, Yatabe; Lawrence, Ashman; David, W; Reza, Soroushmehr; Kayvan, N; Cevidanes, L H S
Osteoarthritis of the Temporomandibular Joint can be diagnosed earlier using biomarkers and machine learning. Journal Article
In: Scientific Reports, vol. 10, no. 1, pp. 8012, 2020.
@article{Bianchi2020b,
title = {Osteoarthritis of the Temporomandibular Joint can be diagnosed earlier using biomarkers and machine learning.},
author = {Bianchi J and A C De Oliveira Ruellas and J R Goncalves and B Paniagua and J C Prieto and S Martin and Li Tengfei and Zhu Hongtu and S James and G William and B Erika and Soki Fabiana and Yatabe Marilia and Ashman Lawrence and W David and Soroushmehr Reza and N Kayvan and L H S Cevidanes },
url = {https://pubmed.ncbi.nlm.nih.gov/32415284/},
doi = {10.1038/s41598-020-64942-0},
year = {2020},
date = {2020-05-15},
urldate = {2020-05-15},
journal = {Scientific Reports},
volume = {10},
number = {1},
pages = {8012},
abstract = {After chronic low back pain, Temporomandibular Joint (TMJ) disorders are the second most common musculoskeletal condition affecting 5 to 12% of the population, with an annual health cost estimated at $4 billion. Chronic disability in TMJ osteoarthritis (OA) increases with aging, and the main goal is to diagnosis before morphological degeneration occurs. Here, we address this challenge using advanced data science to capture, process and analyze 52 clinical, biological and high-resolution CBCT (radiomics) markers from TMJ OA patients and controls. We tested the diagnostic performance of four machine learning models: Logistic Regression, Random Forest, LightGBM, XGBoost. Headaches, Range of mouth opening without pain, Energy, Haralick Correlation, Entropy and interactions of TGF-β1 in Saliva and Headaches, VE-cadherin in Serum and Angiogenin in Saliva, VE-cadherin in Saliva and Headaches, PA1 in Saliva and Headaches, PA1 in Saliva and Range of mouth opening without pain; Gender and Muscle Soreness; Short Run Low Grey Level Emphasis and Headaches, Inverse Difference Moment and Trabecular Separation accurately diagnose early stages of this clinical condition. Our results show the XGBoost + LightGBM model with these features and interactions achieves the accuracy of 0.823, AUC 0.870, and F1-score 0.823 to diagnose the TMJ OA status. Thus, we expect to boost future studies into osteoarthritis patient-specific therapeutic interventions, and thereby improve the health of articular joints.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Bianchi, J; Goncalves, J R; de Oliveira Ruellas, A C; Ashman, L M; Vimort, J B; Yatabe, M; Paniagua, B; Hernandez, P; Benavides, E; Soki, F N; Loshida, M; Cevidanes, L H S
Quantitative bone imaging biomarkers to diagnose temporomandibular joint osteoarthritis Journal Article
In: International Journal of Oral and Maxillofacial Surgery, vol. 50, no. 2, pp. 227-235, 2020.
@article{Bianchi2020,
title = {Quantitative bone imaging biomarkers to diagnose temporomandibular joint osteoarthritis},
author = {J Bianchi and J R Goncalves and A C de Oliveira Ruellas and L M Ashman and J B Vimort and M Yatabe and B Paniagua and P Hernandez and E Benavides and F N Soki and M Loshida and L H S Cevidanes},
url = {https://www.sciencedirect.com/science/article/pii/S0901502720301636#:~:text=%20Quantitative%20bone%20imaging%20biomarkers%20to%20diagnose%20temporomandibular,This%20study%20followe...%204%20References.%20%20More%20},
doi = {0.1016/j.ijom.2020.04.018},
year = {2020},
date = {2020-04-28},
urldate = {2020-04-28},
journal = {International Journal of Oral and Maxillofacial Surgery},
volume = {50},
number = {2},
pages = {227-235},
abstract = {Bone degradation of the condylar surface is seen in temporomandibular joint osteoarthritis (TMJ OA); however, the initial changes occur in the subchondral bone. This cross-sectional study was performed to evaluate 23 subchondral bone imaging biomarkers for TMJ OA. The sample consisted of high-resolution cone beam computed tomography scans of 84 subjects, divided into two groups: TMJ OA (45 patients with TMJ OA) and control (39 asymptomatic subjects). Six regions of each mandibular condyle scan were extracted for computation of five bone morphometric and 18 grey-level texture-based variables. The groups were compared using the Mann–Whitney U-test, and the receiver operating characteristics (ROC) curve was determined for each variable that showed a statically significance difference. The results showed statistically significant differences in the subchondral bone microstructure in the lateral and central condylar regions between the control and TMJ OA groups (P < 0.05). The area under the ROC curve (AUC) for these variables was between 0.620 and 0.710. In conclusion, 13 imaging bone biomarkers presented an acceptable diagnostic performance for the diagnosis of TMJ OA, indicating that the texture and geometry of the subchondral bone microarchitecture may be useful for quantitative grading of the disease.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Hardin, A; Valiathan, M; Oh, H; Knigge, R; McNulty, K; Leary, E; Duren, D; Sherwood, R
Clinical implications of age-related change of the mandibular plane angle. Journal Article
In: Orthod Craniofac Res, vol. 1, pp. 50-58, 2020.
@article{Hardin2020,
title = {Clinical implications of age-related change of the mandibular plane angle. },
author = {A Hardin and M Valiathan and H Oh and R Knigge and K McNulty and E Leary and D Duren and R Sherwood},
url = {https://pubmed.ncbi.nlm.nih.gov/31465622/},
doi = {10.1111/ocr.12342},
year = {2020},
date = {2020-02-23},
urldate = {2020-02-23},
journal = {Orthod Craniofac Res},
volume = {1},
pages = {50-58},
abstract = {To identify trajectories of ontogenetic change in the mandibular plane angle (MPA) and to describe the influence of sex and other factors on MPA during growth.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Joy, A; Park, J; Chambers, D; Oh, H
Airway and cephalometric changes in adult orthodontic patients after premolar extractions. Journal Article
In: Angle Orthod, vol. 90, no. 1, pp. 39-46, 2020.
@article{Joy2020,
title = {Airway and cephalometric changes in adult orthodontic patients after premolar extractions.},
author = {A Joy and J Park and D Chambers and H Oh},
url = {https://pubmed.ncbi.nlm.nih.gov/31403835/#:~:text=Airway%20and%20cephalometric%20changes%20in%20adult%20orthodontic%20patients,measures%20in%20the%20nasopharynx%2C%20retropalatal%2C%20or%20retroglossal%20regions.},
doi = {10.2319/021019-92.1},
year = {2020},
date = {2020-01-00},
urldate = {2020-01-00},
journal = {Angle Orthod},
volume = {90},
number = {1},
pages = {39-46},
abstract = {To examine changes in the airway and cephalometric measurements associated with orthodontic treatment of adults with and without premolar extractions. The study investigated whether extractions had a direct or indirect effect on the airway and examined selected skeletal and dental features.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
J, Park; Baumrind, S; S, Curry; S, Carlson; Oh, H
Reliability of 3D dental and skeletal landmarks on CBCT images. Journal Article
In: Angle Orthod, vol. 89, no. 5, pp. 758-767, 2019.
@article{Park2019,
title = {Reliability of 3D dental and skeletal landmarks on CBCT images.},
author = {Park J and S Baumrind and Curry S and Carlson S and H Oh},
url = {https://pubmed.ncbi.nlm.nih.gov/30883187/},
doi = {10.2319/082018-612.1},
year = {2019},
date = {2019-09-00},
journal = {Angle Orthod},
volume = {89},
number = {5},
pages = {758-767},
abstract = {To quantify reliability of three-dimensional skeletal landmarks and a comprehensive set of dental landmarks in cone-beam computed tomography (CBCT) and to determine the shapes of envelope of error.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Daniel, P O R; J, Bianchi; Jaqueline, I; Larry, M W; Joao, R G
Cone-beam computed tomography airway measurements: Can we trust them? Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 156, no. 1, pp. 53-60, 2019.
@article{Ryan2019,
title = {Cone-beam computed tomography airway measurements: Can we trust them?},
author = {P O R Daniel and Bianchi J and I Jaqueline and M W Larry and R G Joao },
url = {https://pubmed.ncbi.nlm.nih.gov/31256838/},
doi = {10.1016/j.ajodo.2018.07.024},
year = {2019},
date = {2019-07-00},
urldate = {2019-07-00},
journal = {Am J Orthod Dentofacial Orthop},
volume = {156},
number = {1},
pages = {53-60},
abstract = {Pharyngeal airway space (PAS) assessment has been used in the past for a better understanding of orthodontic and surgical outcomes; however, this analysis could be unreliable. Our objective was to evaluate possible changes in the PAS reading in the same patient from their consecutive cone-beam computed tomography (CBCT) scans.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sam, A; Currie, K; Oh, H; Flores-Mir, C; Lagravere-Vich, M
Reliability of different 3D cephalometric landmarks in CBCT: A systematic review. Journal Article
In: Angle Orthod, vol. 89, no. 2, pp. 317-332, 2019.
@article{Sam2019,
title = {Reliability of different 3D cephalometric landmarks in CBCT: A systematic review.},
author = {A Sam and K Currie and H Oh and C Flores-Mir and M Lagravere-Vich},
url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8120873/},
doi = {10.2319/042018-302.1},
year = {2019},
date = {2019-03-00},
urldate = {2019-03-00},
journal = {Angle Orthod},
volume = {89},
number = {2},
pages = {317-332},
abstract = {Conventional two-dimensional (2D) cephalometric radiography is an integral part of orthodontic patient diagnosis and treatment planning. One must be mindful of its limitations as it indeed is a 2D representation of a vaster three-dimensional (3D) object. Issues with projection errors, landmark identification, and measurement inaccuracies impose significant limitations, which may now be overcome with the advent of cone-beam computed tomography (CBCT). A systematic review of the reliability of different 3D cephalometric landmarks in CBCT imaging was conducted.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Garnett, B; Mahod, K; Nguyen, M; Al-Khateeb, A; Liu, S; Boyd, R; Oh, H
Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances. Journal Article
In: Angle Orthodontist, vol. 89, no. 1, pp. 3-9, 2019.
@article{Garnett2019,
title = {Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances.},
author = {B Garnett and K Mahod and M Nguyen and A Al-Khateeb and S Liu and R Boyd and H Oh},
url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8137127/},
doi = {10.2319/010418-4.1},
year = {2019},
date = {2019-01-00},
journal = {Angle Orthodontist},
volume = {89},
number = {1},
pages = {3-9},
abstract = {To compare fixed appliances and clear aligner therapy in correcting anterior open bite and in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
J, Bianchi; Dos, S P Ary; Jaqueline, I; Daniel, P O R; Joao, R G
Effect of temporomandibular joint articular disc repositioning on anterior open-bite malocclusion: An orthodontic-surgical approach Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 152, no. 6, pp. 848-858, 2017.
@article{Bianchi2017,
title = {Effect of temporomandibular joint articular disc repositioning on anterior open-bite malocclusion: An orthodontic-surgical approach},
author = {Bianchi J and S P Ary Dos and I Jaqueline and P O R Daniel and R G Joao },
url = {https://www.sciencedirect.com/science/article/pii/S0889540617306121},
doi = {10.1016/j.ajodo.2016.09.032},
year = {2017},
date = {2017-12-00},
urldate = {2017-12-00},
journal = {Am J Orthod Dentofacial Orthop},
volume = {152},
number = {6},
pages = {848-858},
abstract = {An anterior open bite is a challenge to orthodontic treatment; it has a multifactorial etiology and a wide range ofintervention options. Temporomandibular joint (TMJ) disorders are a risk factor for the development of malocclu-sions such as the anterior open bite, especially in patients who have TMJ osteoarthritis with disc displacement.Articular disc repositioning surgery is an available option for treating this pathology, and it contributes to main-taining the condyles in a more stable position. The aim of this article was to report the case of a 20-year-oldwoman diagnosed with anterior open bite and TMJ osteoarthritis with bilateral disc displacement. The patientreceived both orthodontic treatment and TMJ disc repositioning surgery. Cone-beam computed tomographywas used to create 3-dimensional models of the condyles with regional superposition, and assessment ofbone remodeling was performed at different time intervals. Complete orthodontic and surgical treatment timewas approximately 12 months. The results provided a stable correction of the patient's anterior open bite witha 2-year follow-up and favorable bone remodeling of the condyles due to functional improvement of the TMJ.(Am J Orthod Dentofacial Orthop 2017;152:848-58)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2023 |
KC, Lee; SW, Lim; Jh, Cho; H, Oh; HS, Hwang: Survival rates of mandibular fixed retainers: comparison of a tube-type retainer and conventional multistrand retainers : A prospective randomized clinical trial . In: Journal of Orofacial Orthopedics, 2023. (Type: Journal Article | Abstract | Links | BibTeX | Tags: dental adhesives, device failure, lingual bonded retainer, Mandibular fixed retainer, Orthodontic appliances fixed, Randomized clinical trials)@article{Oh2023c, Objective: The purposes of this study were to evaluate the survival rate of a tube-type mandibular fixed retainer and compare it to conventional multistrand retainers. Materials and methods: In all, 66 patients who had completed their orthodontic treatment were enrolled in this study. They were allocated randomly to a tube-type retainer group or a 0.020 multistrand fixed retainer group. In case of the tube-type retainer, a thermoactive 0.012 NiTi was placed into 6 mini-tubes passively bonded to the anterior teeth. The patients were recalled at 1, 3, 6, 12, and 24 months after retainer placement. During the 2‑year follow-up period, any first-time failure of retainers was recorded. Kaplan-Meier survival analysis and log-rank tests were used to compare the failure rates between the two types of retainers. Results: Of the 34 patients, 14 (41.2%) showed failure in the multistrand retainer group, whereas only 2 of 32 (6.3%) reported failure in the tube-type retainer group. There was a statistically significant difference in failure between the multistrand retainer and the tube-type retainer (log-rank test, P = 0.001). The hazard ratio was 11.937 (95% confidence interval 2.708-52.620; P = 0.005). Conclusion: The tube-type retainer can be used with fewer concerns about recurrent retainer detachments during orthodontic retention. |
2021 |
Bianchi, J; Goncalves, J Roberto; Ruellas, A Carlos De Oliveira; Bianchi, J Vierira Pastana; Ashman, LM; et al,: Radiographic interpretation using high-resolution Cbct to diagnose degenerative temporomandibular joint disease. In: PLOS ONE, vol. 16, no. 8, pp. e0255937, 2021. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, fixed appliances, Growth, hyperdivergent, Mandibular fixed retainer)@article{Bianchi2021b, The objective of this study was to use high-resolution cone-beam computed images (hr- CBCT) to diagnose degenerative joint disease in asymptomatic and symptomatic subjects using the Diagnostic Criteria for Temporomandibular Disorders DC/TMD imaging criteria. This observational study comprised of 92 subjects age-sex matched and divided into two groups: clinical degenerative joint disease (c-DJD, n = 46) and asymptomatic control group (n = 46). Clinical assessment of the DJD and high-resolution CBCT images (isotropic voxel size of 0.08mm) of the temporomandibular joints were performed for each participant. An American Board of Oral and Maxillofacial Radiology certified radiologist and a maxillofacial radiologist used the DC/TMD imaging criteria to evaluate the radiographic findings, followed by a consensus of the radiographic evaluation. The two radiologists presented a high agreement (Cohen's Kappa ranging from 0.80 to 0.87) for all radiographic findings (osteophyte, erosion, cysts, flattening, and sclerosis). Five patients from the c- DJD group did not present radiographic findings, being then classified as arthralgia. In the asymptomatic control group, 82.6% of the patients presented radiographic findings determinant of DJD and were then classified as osteoarthrosis or overdiagnosis. In conclusion, our results showed a high number of radiographic findings in the asymptomatic control group, and for this reason, we suggest that there is a need for additional imaging criteria to classify DJD properly in hr-CBCT images. |
Knigge, R; McNulty, K; Oh, H; Hardin, A; Leary, E; Duren, D; Valathan, M; Sherwood, R: Geometric morphometric analysis of growth patterns among facial types. . In: Am J Orthod Dentofacial Orthop, vol. 160, no. 3, pp. 430-441, 2021. (Type: Journal Article | Abstract | Links | BibTeX | Tags: Adolescents, anterior openbite, Cranial base, craniofacial, extraction, Mandibular fixed retainer, retrospective, vertical control)@article{Knigge2020, Extreme patterns of vertical facial divergence are of great importance to clinicians because of their association with dental malocclusion and functional problems of the orofacial complex. Understanding the growth patterns associated with vertical facial divergence is critical for clinicians to provide optimal treatment. This study evaluates and compares growth patterns from childhood to adulthood among 3 classifications of vertical facial divergence using longitudinal, lateral cephalograms from the Craniofacial Growth Consortium Study. |
Hardin, A M; Knigge, R P; Oh, H; et al,: Estimating craniofacial growth cessation: Comparison of asymptote- and rate-based methods. In: The Cleft Palate-Craniofacial Journal, 2021. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Cranial base, craniofacial, Discrepency Index, Mandibular fixed retainer, Mandibular remodeling, retrospective, teaching)@article{Hardin2021, To identify differences between asymptote- and rate-based methods for estimating age and size at growth cessation in linear craniofacial measurements. |
Cong, A; Massaro, C; Bianchi, J; Ruellas, ACDO; et al,: Dental long axes using digital dental models compared to cone-beam computed tomography.. In: Orthod Cranifac Res, 2021. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, adult, clear aligners, Cranial base, hyperdivergent, Mandibular fixed retainer, Posttreatment, retrospective, teaching)@article{Cong2021, Standard methods of evaluating tooth long axes are not comparable (digital dental models [DDMs], panoramic and cephalometric radiographs) or expose patients to more radiation (cone-beam computed tomography [CBCT]). This study aimed to compare angular changes in tooth long axes using DDMs vs using CBCTs. |
Parizotto, JOL; Peixoto, AP; Borsato, KT; Bianchi, J; et al,: Craniofacial and airway morphology of individuals with oculoauriculovertebral spectrum.. In: Orthodontics & Craniofacial Research, 2021. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, clear aligners, clinical orthodontist, Mandibular fixed retainer, Posttreatment, research, technique, vertical control, x-ray)@article{Parizotto2021, The objectives of this study were to characterize the craniofacial and airway morphology of oculo-auriculo-vertebral spectrum (OAVS) individuals using computed tomography (CT) examination. |
Boubolo, Louis; Dumont, Maxime; Brosset, Serge; Bianchi, Jonas; Ruellas, Antonio; Gurgel, Marcela; Massaro, Camila; Castillo, Aron Aliaga Del; Ioshida, Marcos; Yatabe, Marilia; Benavides, Erika; Rios, Hector; Soki, Fabiana; Neiva, Gisele; Paniagua, Beatriz; Cevidanes, Lucia; Styner, Martin; Prieto, Juan Carlos: FlyBy CNN: a 3D surface segmentation framework. In: Proc. SPIE 11596, Medical Imaging 2021: Image Processing, 115962B , 2021. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, Growth, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment, pressure tension, technique, vertical control)@article{Boubolo2021, In this paper, we present FlyBy CNN, a novel deep learning based approach for 3D shape segmentation. FlyByCNN consists of sampling the surface of the 3D object from different view points and extracting surface features such as the normal vectors. The generated 2D images are then analyzed via 2D convolutional neural networks such as RUNETs. We test our framework in a dental application for segmentation of intra-oral surfaces. The RUNET is trained for the segmentation task using image pairs of surface features and image labels as ground truth. The resulting labels from each segmented image are put back into the surface thanks to our sampling approach that generates 1-1 correspondence of image pixels and triangles in the surface model. The segmentation task achieved an accuracy of 0.9. |
Brosset, Serge; Dumont, Maxime; Cevidanes, Lucia; Soroushmehr, Reza; Bianchi, Jonas; Gurgel, Marcela L; Deleat-besson, Romain; Le, Celia; Ruellas, Antonio; Yatabe, Marilia; Rosas, Liliane; Goncalves, Joao; Najarian, Kayvan; Gryak, Jonathan; Paniagua, Beatriz; Styner, Martin; Prieto, Juan Carlos: "Web infrastructure for data management, storage and computation", Proc. SPIE 11600,. In: Proc SPIE 11600, Medical Imaging 2021: Biomedical Applications in Molecular, Structural, and Functional Imaging, 1166001N, 2021. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, fixed appliances, hyperdivergent, Mandibular fixed retainer, Peer Assessment Rating Index)@article{Brosset2021, The Data Storage for Computation and Integration (DSCI) proposes management innovations for web-based secure data storage, algorithms deployment, and task execution. Its architecture allows inclusion of plugins for upload, browsing, sharing, and task execution in remote computing grids. Here, we demonstrate the DSCI implementation and the deployment of Image processing tools (TMJSeg), machine learning algorithms (MandSeg, DentalModelSeg), and advanced statistical packages (Multivariate Functional Shape Data Analysis, MFSDA), with data transfer and task execution handled by the clusterpost plug-in. Due to its comprehensive web-based design, local software installation is no longer required. The DSCI aims to enable and maintain a distributed computing and collaboration environment across multi-site clinical centers for the data processing of multisource features such as clinical, biological markers, volumetric images, and 3D surface models, with particular emphasis on analytics for temporomandibular joint osteoarthritis (TMJ OA). |
2020 |
Sherwood, R; Oh, H; Valiathan, M; McNulty, K; Duren, D; Knigge, R; Hardin, A; Holzhauser, C; Middleton, K: Bayesian Approach to Longitudinal Craniofacial Growth: The Craniofacial Growth Consortium Study.. In: American Association of Orthodontists Foundation, 2020. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, Cranial base, Growth, hyperdivergent, Mandibular fixed retainer)@article{Sherwood2020, Early in the 20th century, a series of studies were initiated across North America to investigate and characterize childhood growth. The Craniofacial Growth Consortium Study (CGCS) combines craniofacial records from six of those growth studies (15,407 lateral cephalograms from 1,913 individuals; 956 females, 957 males, primarily European descent). Standard cephalometric points collected from the six studies in the CGCS allows direct comparison of craniofacial growth patterns across six North American locations. Three assessors collected all cephalometric points and the coordinates were averaged for each point. Twelve measures were calculated from the averaged coordinates. We implemented a multilevel double logistic equation to estimate growth trajectories fitting each trait separately by sex. Using Bayesian inference, we fit three models for each trait with different random effects structures to compare differences in growth patterns among studies. The models successfully identified important growth milestones (e.g., age at peak growth velocity, age at cessation of growth) for most traits. In a small number of cases, these milestones could not be determined due to truncated age ranges for some studies and slow, steady growth in some measurements. Results demonstrate great similarity among the six growth studies regarding craniofacial growth milestone estimates and the overall shape of the growth curve. These similarities suggest minor variation among studies resulting from differences in protocol, sample, or possible geographic variation. The analyses presented support combining the studies into the CGCS without substantial concerns of bias. The CGCS, therefore, provides an unparalleled opportunity to examine craniofacial growth from childhood into adulthood. |
Serge, B; Maxime, D; Bianchi, J; Antonio, R; Lucia, C; Marilia, Y; Joao, G; Erika, C; Fabiana, S; Beatriz, P; Juan, P; Kayvan, N; Jonathan, G; Reza, S: 3D Auto-Segmentation of Mandibular Condyles. In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), pp. 1270-1273, 2020. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, Peer Assessment Rating Index, Posttreatment, teaching)@article{Brosset2020, Temporomandibular joints (TMJ) like a hinge connect the jawbone to the skull. TMJ disorders could cause pain in the jaw joint and the muscles controlling jaw movement. However, the disease cannot be diagnosed until it becomes symptomatic. It has been shown that bone resorption at the condyle articular surface is already evident at initial diagnosis of TMJ Osteoarthritis (OA). Therefore, analyzing the bone structure will facilitate the disease diagnosis. The important step towards this analysis is the condyle segmentation. This article deals with a method to automatically segment the temporomandibular joint condyle out of cone beam CT (CBCT) scans. In the proposed method we denoise images and apply 3D active contour and morphological operations to segment the condyle. The experimental results show that the proposed method yields the Dice score of 0.9461 with the standards deviation of 0.0888 when it is applied on CBCT images of 95 patients. This segmentation will allow large datasets to be analyzed more efficiently towards data sciences and machine learning approaches for disease classification. |
K, Currie; H, Oh; C, Flores-Mir; M, Lagravere: CBCT assessment of posterior cranial base and surrounding structures in orthodontically treated adolescents. Int Orthod.. In: Int Orthod, vol. 2, pp. 266-275, 2020. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, Mandibular fixed retainer, Mandibular remodeling, x-ray)@article{Currie2020, Understanding craniofacial growth and development is important for accurate diagnosis, treatment planning and post-treatment evaluation of orthodontic cases. Paramount to this is knowledge of the cranial base growth and development, since it is the foundation upon which the remaining facial structures develop. The purpose of this study was to analyse different anatomical structures in the posterior cranial base and determine its changes during the adolescent years (13-15 year of age) using CBCT. |
J, Bianchi; Ruellas, A C De Oliveira; Goncalves, J R; Paniagua, B; Prieto, J C; Martin, S; Tengfei, Li; Hongtu, Zhu; James, S; William, G; Erika, B; Fabiana, Soki; Marilia, Yatabe; Lawrence, Ashman; David, W; Reza, Soroushmehr; Kayvan, N; Cevidanes, L H S: Osteoarthritis of the Temporomandibular Joint can be diagnosed earlier using biomarkers and machine learning.. In: Scientific Reports, vol. 10, no. 1, pp. 8012, 2020. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, craniofacial, hyperdivergent, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment, technique, vertical control, x-ray)@article{Bianchi2020b, After chronic low back pain, Temporomandibular Joint (TMJ) disorders are the second most common musculoskeletal condition affecting 5 to 12% of the population, with an annual health cost estimated at $4 billion. Chronic disability in TMJ osteoarthritis (OA) increases with aging, and the main goal is to diagnosis before morphological degeneration occurs. Here, we address this challenge using advanced data science to capture, process and analyze 52 clinical, biological and high-resolution CBCT (radiomics) markers from TMJ OA patients and controls. We tested the diagnostic performance of four machine learning models: Logistic Regression, Random Forest, LightGBM, XGBoost. Headaches, Range of mouth opening without pain, Energy, Haralick Correlation, Entropy and interactions of TGF-β1 in Saliva and Headaches, VE-cadherin in Serum and Angiogenin in Saliva, VE-cadherin in Saliva and Headaches, PA1 in Saliva and Headaches, PA1 in Saliva and Range of mouth opening without pain; Gender and Muscle Soreness; Short Run Low Grey Level Emphasis and Headaches, Inverse Difference Moment and Trabecular Separation accurately diagnose early stages of this clinical condition. Our results show the XGBoost + LightGBM model with these features and interactions achieves the accuracy of 0.823, AUC 0.870, and F1-score 0.823 to diagnose the TMJ OA status. Thus, we expect to boost future studies into osteoarthritis patient-specific therapeutic interventions, and thereby improve the health of articular joints. |
Bianchi, J; Goncalves, J R; de Oliveira Ruellas, A C; Ashman, L M; Vimort, J B; Yatabe, M; Paniagua, B; Hernandez, P; Benavides, E; Soki, F N; Loshida, M; Cevidanes, L H S: Quantitative bone imaging biomarkers to diagnose temporomandibular joint osteoarthritis. In: International Journal of Oral and Maxillofacial Surgery, vol. 50, no. 2, pp. 227-235, 2020. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, Growth, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, pressure tension, technique)@article{Bianchi2020, Bone degradation of the condylar surface is seen in temporomandibular joint osteoarthritis (TMJ OA); however, the initial changes occur in the subchondral bone. This cross-sectional study was performed to evaluate 23 subchondral bone imaging biomarkers for TMJ OA. The sample consisted of high-resolution cone beam computed tomography scans of 84 subjects, divided into two groups: TMJ OA (45 patients with TMJ OA) and control (39 asymptomatic subjects). Six regions of each mandibular condyle scan were extracted for computation of five bone morphometric and 18 grey-level texture-based variables. The groups were compared using the Mann–Whitney U-test, and the receiver operating characteristics (ROC) curve was determined for each variable that showed a statically significance difference. The results showed statistically significant differences in the subchondral bone microstructure in the lateral and central condylar regions between the control and TMJ OA groups (P < 0.05). The area under the ROC curve (AUC) for these variables was between 0.620 and 0.710. In conclusion, 13 imaging bone biomarkers presented an acceptable diagnostic performance for the diagnosis of TMJ OA, indicating that the texture and geometry of the subchondral bone microarchitecture may be useful for quantitative grading of the disease. |
Hardin, A; Valiathan, M; Oh, H; Knigge, R; McNulty, K; Leary, E; Duren, D; Sherwood, R: Clinical implications of age-related change of the mandibular plane angle. . In: Orthod Craniofac Res, vol. 1, pp. 50-58, 2020. (Type: Journal Article | Abstract | Links | BibTeX | Tags: Adolescents, Cone-beam computed tomography, Cranial base, craniofacial, fixed appliances, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, vertical control)@article{Hardin2020, To identify trajectories of ontogenetic change in the mandibular plane angle (MPA) and to describe the influence of sex and other factors on MPA during growth. |
Joy, A; Park, J; Chambers, D; Oh, H: Airway and cephalometric changes in adult orthodontic patients after premolar extractions.. In: Angle Orthod, vol. 90, no. 1, pp. 39-46, 2020. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, ariway, Cranial base, hyperdivergent, Mandibular fixed retainer, vertical control)@article{Joy2020, To examine changes in the airway and cephalometric measurements associated with orthodontic treatment of adults with and without premolar extractions. The study investigated whether extractions had a direct or indirect effect on the airway and examined selected skeletal and dental features. |
2019 |
J, Park; Baumrind, S; S, Curry; S, Carlson; Oh, H: Reliability of 3D dental and skeletal landmarks on CBCT images.. In: Angle Orthod, vol. 89, no. 5, pp. 758-767, 2019. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Cranial base, Discrepency Index, extraction, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, Peer Assessment Rating Index)@article{Park2019, To quantify reliability of three-dimensional skeletal landmarks and a comprehensive set of dental landmarks in cone-beam computed tomography (CBCT) and to determine the shapes of envelope of error. |
Daniel, P O R; J, Bianchi; Jaqueline, I; Larry, M W; Joao, R G: Cone-beam computed tomography airway measurements: Can we trust them?. In: Am J Orthod Dentofacial Orthop, vol. 156, no. 1, pp. 53-60, 2019. (Type: Journal Article | Abstract | Links | BibTeX | Tags: Adolescents, Cone-beam computed tomography, Cranial base, Discrepency Index, fixed appliances, Growth, hyperdivergent, Mandibular fixed retainer, retrospective)@article{Ryan2019, Pharyngeal airway space (PAS) assessment has been used in the past for a better understanding of orthodontic and surgical outcomes; however, this analysis could be unreliable. Our objective was to evaluate possible changes in the PAS reading in the same patient from their consecutive cone-beam computed tomography (CBCT) scans. |
Sam, A; Currie, K; Oh, H; Flores-Mir, C; Lagravere-Vich, M: Reliability of different 3D cephalometric landmarks in CBCT: A systematic review.. In: Angle Orthod, vol. 89, no. 2, pp. 317-332, 2019. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, Cone-beam computed tomography, Cranial base, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling)@article{Sam2019, Conventional two-dimensional (2D) cephalometric radiography is an integral part of orthodontic patient diagnosis and treatment planning. One must be mindful of its limitations as it indeed is a 2D representation of a vaster three-dimensional (3D) object. Issues with projection errors, landmark identification, and measurement inaccuracies impose significant limitations, which may now be overcome with the advent of cone-beam computed tomography (CBCT). A systematic review of the reliability of different 3D cephalometric landmarks in CBCT imaging was conducted. |
Garnett, B; Mahod, K; Nguyen, M; Al-Khateeb, A; Liu, S; Boyd, R; Oh, H: Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances.. In: Angle Orthodontist, vol. 89, no. 1, pp. 3-9, 2019. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, fixed appliances, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, mapping, open bite, Peer Assessment Rating Index, Posttreatment, research, x-ray)@article{Garnett2019, To compare fixed appliances and clear aligner therapy in correcting anterior open bite and in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns. |
2017 |
J, Bianchi; Dos, S P Ary; Jaqueline, I; Daniel, P O R; Joao, R G: Effect of temporomandibular joint articular disc repositioning on anterior open-bite malocclusion: An orthodontic-surgical approach. In: Am J Orthod Dentofacial Orthop, vol. 152, no. 6, pp. 848-858, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, orthodontic, retrospective, teaching, vertical control)@article{Bianchi2017, An anterior open bite is a challenge to orthodontic treatment; it has a multifactorial etiology and a wide range ofintervention options. Temporomandibular joint (TMJ) disorders are a risk factor for the development of malocclu-sions such as the anterior open bite, especially in patients who have TMJ osteoarthritis with disc displacement.Articular disc repositioning surgery is an available option for treating this pathology, and it contributes to main-taining the condyles in a more stable position. The aim of this article was to report the case of a 20-year-oldwoman diagnosed with anterior open bite and TMJ osteoarthritis with bilateral disc displacement. The patientreceived both orthodontic treatment and TMJ disc repositioning surgery. Cone-beam computed tomographywas used to create 3-dimensional models of the condyles with regional superposition, and assessment ofbone remodeling was performed at different time intervals. Complete orthodontic and surgical treatment timewas approximately 12 months. The results provided a stable correction of the patient's anterior open bite witha 2-year follow-up and favorable bone remodeling of the condyles due to functional improvement of the TMJ.(Am J Orthod Dentofacial Orthop 2017;152:848-58) |
Currie, K; Sawchuk, D; Saltaji, H; Oh, H; Flores-Mir, C; Lagravere-Vich, M: Posterior cranial base natural growth and development: A systematic review. . In: Angle Orthodontist, vol. 87, no. 6, pp. 897-910, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, adult, Cranial base, extraction, fixed appliances, Growth, mandibular asymmetry, Mandibular fixed retainer, Posttreatment, pressure tension, research, retrospective, vertical control, x-ray)@article{Currie2017b, To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba). |
Xu, Y; Oh, H; Lagravere-Vich, M: Malocclusion Class II-Division 1 skeletal and dental relationships measured by Cone-Beam Computed Tomography. . In: International Journal of Orthodontics, vol. 15, no. 3, pp. 365-387, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, pressure tension, retrospective)@article{Xu2017, The purpose of this study was to locate traditionally-used landmarks in two-dimensional (2D) images and newly-suggested ones in three-dimensional (3D) images (cone-beam computer tomographies [CBCTs]) and determine possible relationships between them to categorize patients with Class II-1 malocclusion. |
Hwang, Hyeon-Shik; Oh, Min-Hee; Oh, Hee-Kyun; Oh, Heesoo: Surgery-first approach in correcting skeletal Class III malocclusion with mandibular asymmetry. In: American Journal of Orthodontics and Dentofacial Orthopedics, vol. 152, no. 2, pp. 255-267, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, adult, Class III, Cranial base, Discrepency Index, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, mapping, open bite, orthodontic, surgery-first)@article{Hwang2017, This case report describes a surgical orthodontic case that used the recently introduced surgery-first approach to correct a severe skeletal Class III malocclusion. A 19-year-old woman presented with severe mandibular prognathism and facial asymmetry; she had been waiting for growth completion in order to pursue surgical correction. After prediction of the postsurgical tooth movement and surgical simulation, 2-jaw surgery that included maxillary advancement and differential mandibular setback was performed using a surgery-first approach. Immediate facial improvement was achieved and postsurgical orthodontic treatment was efficiently carried out. The total treatment time was 16 months. The patient's facial appearance improved significantly and a stable surgical orthodontic outcome was obtained. (Am J Orthod Dentofacial Orthop 2017;152:255-67) |
Lui, S; Oh, H; Chambers, D; Weng, X; Chen, Q; Baumrind, S; Xu, T: Validity and reliability of the ABO Discrepancy Index and PAR Index (Peer Assessment Rating) for evaluating malocclusion severity among Chinese orthodontists.. In: Orthodontics and Craniofacial Research, vol. 20, no. 3, pp. 140-145, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, extraction, fixed appliances, hyperdivergent, malocclusion severity, Mandibular fixed retainer, Mandibular remodeling, Posttreatment, retrospective, technique, x-ray)@article{Liu2017b, To assess the validity of the American Board of Orthodontics Discrepancy Index (ABO-DI) and Peer Assessment Rating (PAR) Index in evaluating malocclusion severity in Chinese orthodontic patients. |
Hwang, HS; Oh, MH; Oh, HK: Surgery-first approach in correcting skeletal Class III malocclusion with mandibular asymmetry. . In: Am J Orthod Dentofacial Orthop, vol. 152, no. 2, pp. 255-267, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, adult, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Cranial base, Discrepency Index, fixed appliances, malocclusion severity, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment, pressure tension, retrospective)@article{Hwang2017b, This case report describes a surgical orthodontic case that used the recently introduced surgery-first approach to correct a severe skeletal Class III malocclusion. A 19-year-old woman presented with severe mandibular prognathism and facial asymmetry; she had been waiting for growth completion in order to pursue surgical correction. After prediction of the postsurgical tooth movement and surgical simulation, 2-jaw surgery that included maxillary advancement and differential mandibular setback was performed using a surgery-first approach. Immediate facial improvement was achieved and postsurgical orthodontic treatment was efficiently carried out. The total treatment time was 16 months. The patient's facial appearance improved significantly and a stable surgical orthodontic outcome was obtained. |
Afrand, M; Oh, H; Flores-Mir, C; Lagravere-Vich, M: Growth changes in the anterior and middle cranial bases as assessed through cone-beam computed tomography in adolescents.. In: Am J Orthod Dentofacial Orthop, vol. 151, no. 2, pp. 342-350, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, orthodontic, Peer Assessment Rating Index, Posttreatment, retrospective, technique)@article{Afrand2017b, Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionallyevaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in theanterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial baseswith growth were evaluated by using the previously selected landmarks.Methods:Cone-beam computed to-mography images of 10 dry skulls were used to identify useful landmarks from different areas of the anteriorand middle cranial bases based on their reliability and accuracy. These selected landmarks were identified inthe images of an already available sample of adolescents (n560) taken at 2 time points (19 months apart)to assess dimensional changes with growth.Results:The majority of the proposed 3-dimensional landmarkswith the exception of the lesser wing of the sphenoid showed acceptable intrarater and interrater reliabilities.The distances measured between foramina and canals in the transverse dimension showed evidence ofincreases in size. However, the mean amounts of increase in these transverse distances were equal to orless than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior andposterior clinoid processes. The vertical dimensions showed evidence of some changes, but these werewithin 2% of the original distances.Conclusions:In this adolescent sample, minor growth-related changeswere observed in the anterior and middle cranial bases. The midsagittal area of the anterior cranial base(foramen caecum to presphenoid) was stable. The right and left anterior and posterior clinoid processes canbe used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017;151:342-50) |
Oh, H; Baumrind, S; Dugoni, S; Boero, R; Aubert, M; Boyd, R: A retrospective study of Class II mixed-dentition treatment. . In: Angle Orthodontist, vol. 87, no. 1, pp. 56-67, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, clinical orthodontist, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, Mandibular remodeling, mapping, technique, vertical control, x-ray)@article{Oh2017, To consider the effectiveness of early treatment using one mixed-dentition approach to the correction of moderate and severe Class II malocclusions. |
2016 |
Oh, Heesoo; Ma, Ning; Feng, Ping Ping; Kieu, Katherine; Boero, Roger; Dugoni, Steven; Aubert, Maryse; Chambers, David W.: Evaluation of posttreatment stability after orthodontic treatment in the mixed and permanent dentitions. In: Angle Orthodontist, vol. 86, no. 6, pp. 1010–1018, 2016. (Type: Journal Article | Abstract | Links | BibTeX | Tags: Incisor irregularity, Long-term stability, Mandibular fixed retainer, Posttreatment, Retention)@article{Oh2016, Objective: To investigate posttreatment changes in the maxillary and mandibular arches in patients who underwent orthodontic treatment during the mixed and permanent dentitions. Materials and Methods: The sample was collected retrospectively from three private practices and consisted of 42 patients who were at least 10 years out of orthodontic treatment. The longitudinal records of study casts and cephalometric radiographs were analyzed to quantify posttreatment changes. Results: Minimal changes in maxillary and mandibular irregularity occurred after an average of 16.98 years from completion of treatment. More than 10 years posttreatment, approximately 81% of the maxillary anterior teeth and 88% of the mandibular anterior teeth showed clinically acceptable incisor alignment (,3.5 mm). Mandibular fixed retainers greatly aided in maintaining the stability of the mandibular incisor alignment. However, posttreatment changes in maxillary incisor irregularity did not appear to be influenced by the presence of a mandibular fixed retainer. When compared with longitudinal changes observed in untreated subjects, the increase in incisor irregularity resembled a pattern similar to the regression line of untreated subjects and seems to be entirely age related. Arch width and arch depth was consistently decreased after treatment, but the magnitude of change was minimal at about 1 mm. No associations were found between any of the cephalometric measurements and changes in incisor irregularities. Conclusions: Orthodontic treatment stability can be achieved and mandibular fixed retention appears to be a valuable contributor, especially in patients with further growth expected. (Angle Orthod. 2016;86:1010–1018) |
2010 |
Xu, T-M; Zhang, X; Oh, HS; Boyd, R; Korn, El; Baumrind, S: A Randomized Clinical Trial (RCT) Comparing Maxillary Molar Anchorage Loss Using Two Retraction Techniques.. In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 138, no. 5, pp. 544-5, 2010. (Type: Journal Article | Abstract | Links | BibTeX | Tags: adult, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, open bite, orthodontic, Peer Assessment Rating Index, retrospective)@article{Xu2010, The objective of this pilot randomized clinical trial was to investigate the relative effectiveness of anchorage conservation of en-masse and 2-step retraction techniques during maximum anchorage treatment in patients with Angle Class I and Class II malocclusions. |
2009 |
Oh, HS; Korn, EL; Zhang, XY; Liu, Y; Xu, T-M; Boyd, R; Baumrind, S: Correlation between cephalometric and photographic measurements of facial attractiveness in Chinese and U.S. patients at the end of orthodontic treatment.. In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 136, no. 6, pp. e1-14; discussion 762-3, 2009. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Peer Assessment Rating Index, Posttreatment)@article{Oh2009, Orthodontists rely on esthetic judgments from facial photographs. Concordance between estimates of facial attractiveness made from lateral cephalograms and those made from clinical photographs has not been determined. We conducted a preliminary examination to correlate clinicians' rankings of facial attractiveness from standardized end-of-treatment facial photographs (Photo Attractiveness Rank) with cephalometric measurements of facial attractiveness made for the same subjects at the same time. |
Lui, Y; Korn, EL; Oh, HS; Pearson, H; Xu, T-M; Baumrind, S: Comparison of Chinese and U.S. Orthodontists' Averaged Evaluations of "Facial Attractiveness" from End-of-Treatment Facial Photographs. . In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 135, no. 5, pp. 621-34, 2009. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, Growth, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, technique, vertical control, x-ray)@article{Liu2009, This study continues our assessment of agreement and disagreement among 25 Chinese and 20 US orthodontists in the ranking for facial attractiveness of end-of-treatment photographs of randomly sampled growing Chinese and white orthodontic patients. The main aims of this article were to (1) measure the overall pattern of agreement between the mean rankings of US and Chinese orthodontists, and (2) measure the strength of agreement between the rankings of the US and Chinese orthodontists for each patient. |
2008 |
Xu, T-M; Korn, EL; Liu, Y; Oh, HS; Lee, KH; Baumrind, S: "Facial Attractiveness": Ranking of End-of-Treatment Facial Photographs by Chinese and U.S. Orthodontists.. In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 134, no. 1, pp. 74-84, 2008. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, open bite, retrospective)@article{Xu2008, In this study, we assessed agreement and disagreement among pairs of Chinese and US orthodontists in the ranking for "facial attractiveness" of end-of-treatment photographs of growing Chinese and white orthodontic patients. |
2001 |
SK, Lee; YS, Kim; HS, Oh; KH, Yang; EC, Kim; JG, Chi: Prenatal development of the human mandible. . In: The Anatomical Record, vol. 263, no. 3, pp. 314-25, 2001. (Type: Journal Article | Abstract | Links | BibTeX | Tags: adult, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, craniofacial, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Posttreatment, pressure tension)@article{Lee2001, In an effort to better understand the interrelationship of the growth and development pattern of the mandible and condyle, a sequential growth pattern of human mandibles in 38 embryos and 111 fetuses were examined by serial histological sections and soft X-ray views. The basic growth pattern of the mandibular body and condyle appeared in week 7 of fertilization. Histologically, the embryonal mandible originated from primary intramembranous ossification in the fibrous mesenchymal tissue around the Meckel cartilage. From this initial ossification, the ramifying trabecular bones developed forward, backward and upward, to form the symphysis, mandibular body, and coronoid process, respectively. We named this initial ossification site of embryonal mandible as the mandibular primary growth center (MdPGC). During week 8 of fertilization, the trabecular bone of the mandibular body grew rapidly to form muscular attachments to the masseter, temporalis, and pterygoid muscles. The mandible was then rapidly separated from the Meckel cartilage and formed a condyle blastema at the posterior end of linear mandibular trabeculae. The condyle blastema, attached to the upper part of pterygoid muscle, grew backward and upward and concurrent endochondral ossification resulted in the formation of the condyle. From week 14 of fertilization, the growth of conical structure of condyle became apparent on histological and radiological examinations. The mandibular body showed a conspicuous radiating trabecular growth pattern centered at the MdPGC, located around the apical area of deciduous first molar. The condyle growth showed characteristic conical structure and abundant hematopoietic tissue in the marrow. The growth of the proximal end of condyle was also approximated to the MdPGC on radiograms. Taken together, we hypothesized that the MdPGC has an important morphogenetic affect for the development of the human mandible, providing a growth center for the trabecular bone of mandibular body and also indicating the initial growth of endochondral ossification of the condyle. |
0000 |
C, Thereza-Bussolaro; HS, Oh; M, Lagravere; C, Flores-Mir: Pharyngeal dimensional changes in class II malocclusion treatment when using Forsus® or intermaxillary elastics - An exploratory study.. In: Int Orthod, vol. 17, no. 4, pp. 667-677, 0000. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, adult, clear aligners, Cone-beam computed tomography, Cranial base, craniofacial, Mandibular fixed retainer, Mandibular remodeling, Peer Assessment Rating Index, pressure tension, research, teaching, technique, vertical control)@article{Bussolaro2019, Pharyngeal airway obstruction can facilitate some forms of sleep disorder breathing (SDB) in susceptible children, especially in those having class II malocclusion. Changes in the anatomic areas surrounding the pharyngeal region during orthodontic treatment could hypothetically impact the pharyngeal airway dimensions. Management of a class II malocclusion on a growing individual with either intermaxillary elastics or different removable or fixed class II appliance designs have been proposed over the last century. The objective of this retrospective exploratory cohort study is to investigate to what extent the class II malocclusion treatment with either intermaxillary elastics (IME) or Forsus® fatigue resistance device (FFRD) leads to changes in oropharyngeal airway dimensions. |