Publications
2021
Turkestani, N Al; Bianchi, J; Deleat-Besson, R; et al,
Clinical decision support systems in orthodontics: A narrative review of data science approaches. Journal Article
In: Orthod Craniofac Res, 2021.
Abstract | Links | BibTeX | Tags: AAOF, clinical orthodontist, Cone-beam computed tomography, Cranial base, craniofacial, hyperdivergent, malocclusion severity, mandibular asymmetry, Posttreatment, technique
@article{Turkestani2021,
title = {Clinical decision support systems in orthodontics: A narrative review of data science approaches.},
author = {N Al Turkestani and J Bianchi and R Deleat-Besson and et al},
url = {https://onlinelibrary.wiley.com/doi/10.1111/ocr.12492},
doi = {10.1111/ocr.12492 },
year = {2021},
date = {2021-05-11},
urldate = {2021-05-11},
journal = {Orthod Craniofac Res},
abstract = {Advancements in technology and data collection generated immense amounts of information from various sources such as health records, clinical examination, imaging, medical devices, as well as experimental and biological data. Proper management and analysis of these data via high-end computing solutions, artificial intelligence and machine learning approaches can assist in extracting meaningful information that enhances population health and well-being. Furthermore, the extracted knowledge can provide new avenues for modern healthcare delivery via clinical decision support systems. This manuscript presents a narrative review of data science approaches for clinical decision support systems in orthodontics. We describe the fundamental components of data science approaches including (a) Data collection, storage and management; (b) Data processing; (C) In-depth data analysis; and (d) Data communication. Then, we introduce a web-based data management platform, the Data Storage for Computation and Integration, for temporomandibular joint and dental clinical decision support systems. },
keywords = {AAOF, clinical orthodontist, Cone-beam computed tomography, Cranial base, craniofacial, hyperdivergent, malocclusion severity, mandibular asymmetry, Posttreatment, technique},
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}
}
2020
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}
}
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}
}
2019
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
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}
}
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}
}
2016
Oh, H; Ma, N; Feng, P; Kieu, K; Boero, R; Dugoni, S; Aubert, M; Chambers, D
Evaluation of Post-treatment stability following 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: AAOF, Cone-beam computed tomography, Cranial base, hyperdivergent, Peer Assessment Rating Index, Posttreatment, pressure tension, research, retrospective, technique
@article{Oh2016b,
title = {Evaluation of Post-treatment stability following orthodontic treatment in the mixed and permanent dentitions.},
author = {H Oh and N Ma and P Feng and K Kieu and R Boero and S Dugoni and M Aubert and D Chambers},
url = {https://pubmed.ncbi.nlm.nih.gov/27214339/},
doi = {10.2319/122315-881.1},
year = {2016},
date = {2016-11-00},
journal = {Angle Orthodontist},
volume = {86},
number = {6},
pages = {1010-1018},
abstract = {To investigate posttreatment changes in the maxillary and mandibular arches in patients who underwent orthodontic treatment during the mixed and permanent dentitions.},
keywords = {AAOF, Cone-beam computed tomography, Cranial base, hyperdivergent, Peer Assessment Rating Index, Posttreatment, pressure tension, research, retrospective, technique},
pubstate = {published},
tppubtype = {article}
}
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)
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}
}
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
Oh, H; J, Park; Lagravere-Vich, M
Comparison of traditional RPE with two types of micro-implant assisted RPE: CBCT study. Journal Article
In: Semin Orthod, vol. 25, no. 1, pp. 60-68, 0000.
Abstract | Links | BibTeX | Tags: AAOF, adult, anterior openbite, Cranial base, extraction, Growth, Posttreatment, pressure tension, retrospective, technique, x-ray
@article{Oh2019b,
title = {Comparison of traditional RPE with two types of micro-implant assisted RPE: CBCT study.},
author = {H Oh and Park J and M Lagravere-Vich },
url = {https://www.sciencedirect.com/science/article/pii/S1073874619300076},
doi = {10.1053/j.sodo.2019.02.007},
journal = {Semin Orthod},
volume = {25},
number = {1},
pages = {60-68},
abstract = {Recently, various types of the Micro-implant Assisted RPE (MARPE) were introduced to obtain greater skeletal expansion and to minimize dental effects. In the present study, we evaluated skeletal and dental effects immediately after the completion of expansion using three different types of expanders— a traditional tooth-anchored maxillary expander (TAME) and two different types of MARPE, bone-anchored maxillary expander (BAME) and tooth-bone-anchored expander (MSE) using CBCT in adolescents. Overall, the MSE group showed much greater skeletal changes than the TAME and BAME groups, especially, at the nasal floor, maxillary base, and palatal suture. About 72–78% of suture opening was at PNS, which indicates slightly more opening anteriorly than posteriorly; however, it was relatively parallel in nature than anticipated. In all three groups, the greatest transverse changes with expansion occurred at the molar crowns and the 2nd greatest changes at the palatal suture opening at ANS. It is suggested that MSE can be a great alternative method in correcting maxillary skeletal transverse deficiency.},
keywords = {AAOF, adult, anterior openbite, Cranial base, extraction, Growth, Posttreatment, pressure tension, retrospective, technique, x-ray},
pubstate = {published},
tppubtype = {article}
}
Turkestani, N Al; Bianchi, J; Deleat-Besson, R; et al,
Clinical decision support systems in orthodontics: A narrative review of data science approaches. Journal Article
In: Orthod Craniofac Res, 2021.
@article{Turkestani2021,
title = {Clinical decision support systems in orthodontics: A narrative review of data science approaches.},
author = {N Al Turkestani and J Bianchi and R Deleat-Besson and et al},
url = {https://onlinelibrary.wiley.com/doi/10.1111/ocr.12492},
doi = {10.1111/ocr.12492 },
year = {2021},
date = {2021-05-11},
urldate = {2021-05-11},
journal = {Orthod Craniofac Res},
abstract = {Advancements in technology and data collection generated immense amounts of information from various sources such as health records, clinical examination, imaging, medical devices, as well as experimental and biological data. Proper management and analysis of these data via high-end computing solutions, artificial intelligence and machine learning approaches can assist in extracting meaningful information that enhances population health and well-being. Furthermore, the extracted knowledge can provide new avenues for modern healthcare delivery via clinical decision support systems. This manuscript presents a narrative review of data science approaches for clinical decision support systems in orthodontics. We describe the fundamental components of data science approaches including (a) Data collection, storage and management; (b) Data processing; (C) In-depth data analysis; and (d) Data communication. Then, we introduce a web-based data management platform, the Data Storage for Computation and Integration, for temporomandibular joint and dental clinical decision support systems. },
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}
}
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}
}
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}
}
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}
}
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.
@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 = {},
pubstate = {published},
tppubtype = {article}
}
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. Journal Article
In: Orthodontics and Craniofacial Research, vol. 20, no. 3, pp. 140-145, 2017.
@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 = {},
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.
@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 = {},
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.
@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 = {},
pubstate = {published},
tppubtype = {article}
}
Oh, H; Ma, N; Feng, P; Kieu, K; Boero, R; Dugoni, S; Aubert, M; Chambers, D
Evaluation of Post-treatment stability following orthodontic treatment in the mixed and permanent dentitions. Journal Article
In: Angle Orthodontist, vol. 86, no. 6, pp. 1010-1018, 2016.
@article{Oh2016b,
title = {Evaluation of Post-treatment stability following orthodontic treatment in the mixed and permanent dentitions.},
author = {H Oh and N Ma and P Feng and K Kieu and R Boero and S Dugoni and M Aubert and D Chambers},
url = {https://pubmed.ncbi.nlm.nih.gov/27214339/},
doi = {10.2319/122315-881.1},
year = {2016},
date = {2016-11-00},
journal = {Angle Orthodontist},
volume = {86},
number = {6},
pages = {1010-1018},
abstract = {To investigate posttreatment changes in the maxillary and mandibular arches in patients who underwent orthodontic treatment during the mixed and permanent dentitions.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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.
@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 = {},
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)
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. Journal Article
In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 136, no. 6, pp. e1-14; discussion 762-3, 2009.
@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 = {},
pubstate = {published},
tppubtype = {article}
}
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.
@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 = {},
pubstate = {published},
tppubtype = {article}
}
Oh, H; J, Park; Lagravere-Vich, M
Comparison of traditional RPE with two types of micro-implant assisted RPE: CBCT study. Journal Article
In: Semin Orthod, vol. 25, no. 1, pp. 60-68, 0000.
@article{Oh2019b,
title = {Comparison of traditional RPE with two types of micro-implant assisted RPE: CBCT study.},
author = {H Oh and Park J and M Lagravere-Vich },
url = {https://www.sciencedirect.com/science/article/pii/S1073874619300076},
doi = {10.1053/j.sodo.2019.02.007},
journal = {Semin Orthod},
volume = {25},
number = {1},
pages = {60-68},
abstract = {Recently, various types of the Micro-implant Assisted RPE (MARPE) were introduced to obtain greater skeletal expansion and to minimize dental effects. In the present study, we evaluated skeletal and dental effects immediately after the completion of expansion using three different types of expanders— a traditional tooth-anchored maxillary expander (TAME) and two different types of MARPE, bone-anchored maxillary expander (BAME) and tooth-bone-anchored expander (MSE) using CBCT in adolescents. Overall, the MSE group showed much greater skeletal changes than the TAME and BAME groups, especially, at the nasal floor, maxillary base, and palatal suture. About 72–78% of suture opening was at PNS, which indicates slightly more opening anteriorly than posteriorly; however, it was relatively parallel in nature than anticipated. In all three groups, the greatest transverse changes with expansion occurred at the molar crowns and the 2nd greatest changes at the palatal suture opening at ANS. It is suggested that MSE can be a great alternative method in correcting maxillary skeletal transverse deficiency.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2021 |
Turkestani, N Al; Bianchi, J; Deleat-Besson, R; et al,: Clinical decision support systems in orthodontics: A narrative review of data science approaches.. In: Orthod Craniofac Res, 2021. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, clinical orthodontist, Cone-beam computed tomography, Cranial base, craniofacial, hyperdivergent, malocclusion severity, mandibular asymmetry, Posttreatment, technique)@article{Turkestani2021, Advancements in technology and data collection generated immense amounts of information from various sources such as health records, clinical examination, imaging, medical devices, as well as experimental and biological data. Proper management and analysis of these data via high-end computing solutions, artificial intelligence and machine learning approaches can assist in extracting meaningful information that enhances population health and well-being. Furthermore, the extracted knowledge can provide new avenues for modern healthcare delivery via clinical decision support systems. This manuscript presents a narrative review of data science approaches for clinical decision support systems in orthodontics. We describe the fundamental components of data science approaches including (a) Data collection, storage and management; (b) Data processing; (C) In-depth data analysis; and (d) Data communication. Then, we introduce a web-based data management platform, the Data Storage for Computation and Integration, for temporomandibular joint and dental clinical decision support systems. |
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. |
2020 |
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. |
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. |
2019 |
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 |
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). |
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) |
2016 |
Oh, H; Ma, N; Feng, P; Kieu, K; Boero, R; Dugoni, S; Aubert, M; Chambers, D: Evaluation of Post-treatment stability following 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: AAOF, Cone-beam computed tomography, Cranial base, hyperdivergent, Peer Assessment Rating Index, Posttreatment, pressure tension, research, retrospective, technique)@article{Oh2016b, To investigate posttreatment changes in the maxillary and mandibular arches in patients who underwent orthodontic treatment during the mixed and permanent dentitions. |
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) |
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. |
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 |
Oh, H; J, Park; Lagravere-Vich, M: Comparison of traditional RPE with two types of micro-implant assisted RPE: CBCT study.. In: Semin Orthod, vol. 25, no. 1, pp. 60-68, 0000. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, adult, anterior openbite, Cranial base, extraction, Growth, Posttreatment, pressure tension, retrospective, technique, x-ray)@article{Oh2019b, Recently, various types of the Micro-implant Assisted RPE (MARPE) were introduced to obtain greater skeletal expansion and to minimize dental effects. In the present study, we evaluated skeletal and dental effects immediately after the completion of expansion using three different types of expanders— a traditional tooth-anchored maxillary expander (TAME) and two different types of MARPE, bone-anchored maxillary expander (BAME) and tooth-bone-anchored expander (MSE) using CBCT in adolescents. Overall, the MSE group showed much greater skeletal changes than the TAME and BAME groups, especially, at the nasal floor, maxillary base, and palatal suture. About 72–78% of suture opening was at PNS, which indicates slightly more opening anteriorly than posteriorly; however, it was relatively parallel in nature than anticipated. In all three groups, the greatest transverse changes with expansion occurred at the molar crowns and the 2nd greatest changes at the palatal suture opening at ANS. It is suggested that MSE can be a great alternative method in correcting maxillary skeletal transverse deficiency. |