Publications
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}
}
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
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}
}
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}
}
2019
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}
}
2018
Liu, S; Oh, H; Chambers, D; Baumrind, S; Xu, T
Interpreting Weightings of the Peer Assessment Rating Index and the Discrepancy Index across Contexts on Chinese Patients. Journal Article
In: European Journal of Orthodontics, vol. 40, no. 2, pp. 157-163, 2018.
Abstract | Links | BibTeX | Tags: clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, Growth, hyperdivergent, malocclusion severity, mandibular asymmetry, Peer Assessment Rating Index, teaching, vertical control
@article{Liu2017b,
title = {Interpreting Weightings of the Peer Assessment Rating Index and the Discrepancy Index across Contexts on Chinese Patients.},
author = {S Liu and H Oh and D Chambers and S Baumrind and T Xu},
url = {https://pubmed.ncbi.nlm.nih.gov/28575327/},
doi = {10.1093/ejo/cjx043},
year = {2018},
date = {2018-04-06},
urldate = {2018-04-06},
journal = {European Journal of Orthodontics},
volume = {40},
number = {2},
pages = {157-163},
abstract = {Determine optimal weightings of Peer Assessment Rating (PAR) index and Discrepancy Index (DI) for malocclusion severity assessment in Chinese orthodontic patients.},
keywords = {clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, Growth, hyperdivergent, malocclusion severity, mandibular asymmetry, Peer Assessment Rating Index, teaching, vertical control},
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}
}
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}
}
Afrand, Mona; Oh, Heesoo; Flores-Mirand, Carlos; Lagravère-Vich, Manuel O.
Growth changes in the anterior and middle cranial bases assessed with cone-beam computed tomography in adolescents Journal Article
In: American Journal of Orthodontics and Dentofacial Orthopedics, vol. 151, no. 2, pp. 342-50, 2017.
Abstract | Links | BibTeX | Tags: Adolescents, Cone-beam computed tomography, Cranial base, Growth
@article{Afrand2017,
title = {Growth changes in the anterior and middle cranial bases assessed with cone-beam computed tomography in adolescents},
author = {Mona Afrand and Heesoo Oh and Carlos Flores-Mirand and Manuel O. Lagravère-Vich},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Growth-changes-in-the-anterior-and-middel-cranial-base.pdf},
year = {2017},
date = {2017-02-01},
journal = {American Journal of Orthodontics and Dentofacial Orthopedics},
volume = {151},
number = {2},
pages = {342-50},
abstract = {Introduction: Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionally evaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in the anterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial bases with growth were evaluated by using the previously selected landmarks.
Methods: Cone-beam computed tomography images of 10 dry skulls were used to identify useful landmarks from different areas of the anterior and middle cranial bases based on their reliability and accuracy. These selected landmarks were identified in the images of an already available sample of adolescents (n 560) taken at 2 time points (19 months apart) to assess dimensional changes with growth.
Results: The majority of the proposed 3-dimensional landmarks with 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 of increases in size. However, the mean amounts of increase in these transverse distances were equal to or less than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior and posterior clinoid processes. The vertical dimensions showed evidence of some changes, but these were within 2% of the original distances.
Conclusions: In this adolescent sample, minor growth-related changes were 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 can be used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017; 151:342-50)},
keywords = {Adolescents, Cone-beam computed tomography, Cranial base, Growth},
pubstate = {published},
tppubtype = {article}
}
Methods: Cone-beam computed tomography images of 10 dry skulls were used to identify useful landmarks from different areas of the anterior and middle cranial bases based on their reliability and accuracy. These selected landmarks were identified in the images of an already available sample of adolescents (n 560) taken at 2 time points (19 months apart) to assess dimensional changes with growth.
Results: The majority of the proposed 3-dimensional landmarks with 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 of increases in size. However, the mean amounts of increase in these transverse distances were equal to or less than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior and posterior clinoid processes. The vertical dimensions showed evidence of some changes, but these were within 2% of the original distances.
Conclusions: In this adolescent sample, minor growth-related changes were 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 can be used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017; 151:342-50)
Currie, Kris; Sawchuk, Dena; Saltaji, Humam; Oh, Heesoo; Flores-Mirand, Carlos; Lagravère-Vich, Manuel O.
Posterior cranial base natural growth and development: A systematic review Journal Article
In: Angle Orthodontist, no. 87, pp. 897–910, 2017.
Abstract | Links | BibTeX | Tags: Cranial base, Growth
@article{Currie2017,
title = {Posterior cranial base natural growth and development: A systematic review},
author = {Kris Currie and Dena Sawchuk and Humam Saltaji and Heesoo Oh and Carlos Flores-Mirand and Manuel O. Lagravère-Vich},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Posterior-cranial-base-natural-growth-and-development-A-systematic-review.pdf},
year = {2017},
date = {2017-01-01},
journal = {Angle Orthodontist},
number = {87},
pages = {897–910},
abstract = {Objective: To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba).
Materials and Methods: The search was performed on MEDLINE, Embase, PubMed, and all EBM Reviews electronic databases. In addition, reference lists of the included studies were hand-
searched. Articles were included if they analyzed posterior cranial-base growth in humans specifically. Study selection, data extraction, and risk of bias assessment were completed in
duplicate. A meta-analysis was not justified.
Results: Finally, 23 published studies were selected: 5 cross-sectional and 18 cohort studies. Articles were published between 1955 and 2015, and all were published in English. The sample
sizes varied between 20 and 397 individuals and consisted of craniofacial measurements from either living or deceased human skulls. Validity of the measurements was not determined in any of the studies, while six papers reported some form of reliability assessment. All the articles included multiple time points within the same population or data from multiple age groups. Growth of S-Ba was generally agreed to be from spheno-occipital synchondrosis growth. Basion displaced downward and backward and sella turcica moved downward and backward during craniofacial growth. Timing of cessation of S-Ba growth was not conclusive due to limited identified evidence.
Conclusions: Current evidence suggests that S-Ba is not totally stable, as its dimensions change throughout craniofacial growth and a minor dimensional change is observed even in late adulthood. (Angle Orthod. 2017;87:897–910.)},
keywords = {Cranial base, Growth},
pubstate = {published},
tppubtype = {article}
}
Materials and Methods: The search was performed on MEDLINE, Embase, PubMed, and all EBM Reviews electronic databases. In addition, reference lists of the included studies were hand-
searched. Articles were included if they analyzed posterior cranial-base growth in humans specifically. Study selection, data extraction, and risk of bias assessment were completed in
duplicate. A meta-analysis was not justified.
Results: Finally, 23 published studies were selected: 5 cross-sectional and 18 cohort studies. Articles were published between 1955 and 2015, and all were published in English. The sample
sizes varied between 20 and 397 individuals and consisted of craniofacial measurements from either living or deceased human skulls. Validity of the measurements was not determined in any of the studies, while six papers reported some form of reliability assessment. All the articles included multiple time points within the same population or data from multiple age groups. Growth of S-Ba was generally agreed to be from spheno-occipital synchondrosis growth. Basion displaced downward and backward and sella turcica moved downward and backward during craniofacial growth. Timing of cessation of S-Ba growth was not conclusive due to limited identified evidence.
Conclusions: Current evidence suggests that S-Ba is not totally stable, as its dimensions change throughout craniofacial growth and a minor dimensional change is observed even in late adulthood. (Angle Orthod. 2017;87:897–910.)
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}
}
2014
Oh, H; Herchold, K; et al,
Orthodontic tooth movement through the maxillary sinus in an adult patient with multiple missing teeth. Journal Article
In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 146, no. 4, pp. 493-505, 2014.
Abstract | Links | BibTeX | Tags: Cone-beam computed tomography, fixed appliances, Growth, hyperdivergent, orthodontic, Peer Assessment Rating Index, research, vertical control
@article{Oh2014,
title = {Orthodontic tooth movement through the maxillary sinus in an adult patient with multiple missing teeth. },
author = {H Oh and K Herchold and et al},
url = {https://pubmed.ncbi.nlm.nih.gov/25263152/},
doi = {10.1016/j.ajodo.2014.03.025},
year = {2014},
date = {2014-10-00},
journal = {American Journal of Orthodontics & Dentofacial Orthopedics},
volume = {146},
number = {4},
pages = {493-505},
abstract = {This case report describes the successful orthodontic tooth movement through the maxillary sinus in an adult patient. A 41-year-old Asian woman had severe lip protrusion and multiple missing posterior teeth. Her orthodontic treatment included the extraction of 2 teeth, maximum retraction of the incisors using the extraction spaces and the existing spaces from the missing molars, and closure of all remaining spaces. Even though the treatment time was extended because of the anatomic and biologic challenges associated with moving posterior teeth over a long distance through the maxillary sinus, a successful outcome was obtained, with significant bone modeling of the maxillary sinus. The results demonstrate that a carefully selected force system can overcome the anatomic limitations of moving tooth against the cortical bone of the maxillary sinus wall in adult patients.},
keywords = {Cone-beam computed tomography, fixed appliances, Growth, hyperdivergent, orthodontic, Peer Assessment Rating Index, research, vertical control},
pubstate = {published},
tppubtype = {article}
}
2009
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}
}
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}
}
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}
}
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}
}
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}
}
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}
}
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}
}
Liu, S; Oh, H; Chambers, D; Baumrind, S; Xu, T
Interpreting Weightings of the Peer Assessment Rating Index and the Discrepancy Index across Contexts on Chinese Patients. Journal Article
In: European Journal of Orthodontics, vol. 40, no. 2, pp. 157-163, 2018.
@article{Liu2017b,
title = {Interpreting Weightings of the Peer Assessment Rating Index and the Discrepancy Index across Contexts on Chinese Patients.},
author = {S Liu and H Oh and D Chambers and S Baumrind and T Xu},
url = {https://pubmed.ncbi.nlm.nih.gov/28575327/},
doi = {10.1093/ejo/cjx043},
year = {2018},
date = {2018-04-06},
urldate = {2018-04-06},
journal = {European Journal of Orthodontics},
volume = {40},
number = {2},
pages = {157-163},
abstract = {Determine optimal weightings of Peer Assessment Rating (PAR) index and Discrepancy Index (DI) for malocclusion severity assessment in Chinese orthodontic patients.},
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}
}
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.
@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 = {},
pubstate = {published},
tppubtype = {article}
}
Afrand, Mona; Oh, Heesoo; Flores-Mirand, Carlos; Lagravère-Vich, Manuel O.
Growth changes in the anterior and middle cranial bases assessed with cone-beam computed tomography in adolescents Journal Article
In: American Journal of Orthodontics and Dentofacial Orthopedics, vol. 151, no. 2, pp. 342-50, 2017.
@article{Afrand2017,
title = {Growth changes in the anterior and middle cranial bases assessed with cone-beam computed tomography in adolescents},
author = {Mona Afrand and Heesoo Oh and Carlos Flores-Mirand and Manuel O. Lagravère-Vich},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Growth-changes-in-the-anterior-and-middel-cranial-base.pdf},
year = {2017},
date = {2017-02-01},
journal = {American Journal of Orthodontics and Dentofacial Orthopedics},
volume = {151},
number = {2},
pages = {342-50},
abstract = {Introduction: Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionally evaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in the anterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial bases with growth were evaluated by using the previously selected landmarks.
Methods: Cone-beam computed tomography images of 10 dry skulls were used to identify useful landmarks from different areas of the anterior and middle cranial bases based on their reliability and accuracy. These selected landmarks were identified in the images of an already available sample of adolescents (n 560) taken at 2 time points (19 months apart) to assess dimensional changes with growth.
Results: The majority of the proposed 3-dimensional landmarks with 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 of increases in size. However, the mean amounts of increase in these transverse distances were equal to or less than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior and posterior clinoid processes. The vertical dimensions showed evidence of some changes, but these were within 2% of the original distances.
Conclusions: In this adolescent sample, minor growth-related changes were 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 can be used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017; 151:342-50)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Methods: Cone-beam computed tomography images of 10 dry skulls were used to identify useful landmarks from different areas of the anterior and middle cranial bases based on their reliability and accuracy. These selected landmarks were identified in the images of an already available sample of adolescents (n 560) taken at 2 time points (19 months apart) to assess dimensional changes with growth.
Results: The majority of the proposed 3-dimensional landmarks with 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 of increases in size. However, the mean amounts of increase in these transverse distances were equal to or less than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior and posterior clinoid processes. The vertical dimensions showed evidence of some changes, but these were within 2% of the original distances.
Conclusions: In this adolescent sample, minor growth-related changes were 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 can be used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017; 151:342-50)
Currie, Kris; Sawchuk, Dena; Saltaji, Humam; Oh, Heesoo; Flores-Mirand, Carlos; Lagravère-Vich, Manuel O.
Posterior cranial base natural growth and development: A systematic review Journal Article
In: Angle Orthodontist, no. 87, pp. 897–910, 2017.
@article{Currie2017,
title = {Posterior cranial base natural growth and development: A systematic review},
author = {Kris Currie and Dena Sawchuk and Humam Saltaji and Heesoo Oh and Carlos Flores-Mirand and Manuel O. Lagravère-Vich},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Posterior-cranial-base-natural-growth-and-development-A-systematic-review.pdf},
year = {2017},
date = {2017-01-01},
journal = {Angle Orthodontist},
number = {87},
pages = {897–910},
abstract = {Objective: To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba).
Materials and Methods: The search was performed on MEDLINE, Embase, PubMed, and all EBM Reviews electronic databases. In addition, reference lists of the included studies were hand-
searched. Articles were included if they analyzed posterior cranial-base growth in humans specifically. Study selection, data extraction, and risk of bias assessment were completed in
duplicate. A meta-analysis was not justified.
Results: Finally, 23 published studies were selected: 5 cross-sectional and 18 cohort studies. Articles were published between 1955 and 2015, and all were published in English. The sample
sizes varied between 20 and 397 individuals and consisted of craniofacial measurements from either living or deceased human skulls. Validity of the measurements was not determined in any of the studies, while six papers reported some form of reliability assessment. All the articles included multiple time points within the same population or data from multiple age groups. Growth of S-Ba was generally agreed to be from spheno-occipital synchondrosis growth. Basion displaced downward and backward and sella turcica moved downward and backward during craniofacial growth. Timing of cessation of S-Ba growth was not conclusive due to limited identified evidence.
Conclusions: Current evidence suggests that S-Ba is not totally stable, as its dimensions change throughout craniofacial growth and a minor dimensional change is observed even in late adulthood. (Angle Orthod. 2017;87:897–910.)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Materials and Methods: The search was performed on MEDLINE, Embase, PubMed, and all EBM Reviews electronic databases. In addition, reference lists of the included studies were hand-
searched. Articles were included if they analyzed posterior cranial-base growth in humans specifically. Study selection, data extraction, and risk of bias assessment were completed in
duplicate. A meta-analysis was not justified.
Results: Finally, 23 published studies were selected: 5 cross-sectional and 18 cohort studies. Articles were published between 1955 and 2015, and all were published in English. The sample
sizes varied between 20 and 397 individuals and consisted of craniofacial measurements from either living or deceased human skulls. Validity of the measurements was not determined in any of the studies, while six papers reported some form of reliability assessment. All the articles included multiple time points within the same population or data from multiple age groups. Growth of S-Ba was generally agreed to be from spheno-occipital synchondrosis growth. Basion displaced downward and backward and sella turcica moved downward and backward during craniofacial growth. Timing of cessation of S-Ba growth was not conclusive due to limited identified evidence.
Conclusions: Current evidence suggests that S-Ba is not totally stable, as its dimensions change throughout craniofacial growth and a minor dimensional change is observed even in late adulthood. (Angle Orthod. 2017;87:897–910.)
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.
@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 = {},
pubstate = {published},
tppubtype = {article}
}
Oh, H; Herchold, K; et al,
Orthodontic tooth movement through the maxillary sinus in an adult patient with multiple missing teeth. Journal Article
In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 146, no. 4, pp. 493-505, 2014.
@article{Oh2014,
title = {Orthodontic tooth movement through the maxillary sinus in an adult patient with multiple missing teeth. },
author = {H Oh and K Herchold and et al},
url = {https://pubmed.ncbi.nlm.nih.gov/25263152/},
doi = {10.1016/j.ajodo.2014.03.025},
year = {2014},
date = {2014-10-00},
journal = {American Journal of Orthodontics & Dentofacial Orthopedics},
volume = {146},
number = {4},
pages = {493-505},
abstract = {This case report describes the successful orthodontic tooth movement through the maxillary sinus in an adult patient. A 41-year-old Asian woman had severe lip protrusion and multiple missing posterior teeth. Her orthodontic treatment included the extraction of 2 teeth, maximum retraction of the incisors using the extraction spaces and the existing spaces from the missing molars, and closure of all remaining spaces. Even though the treatment time was extended because of the anatomic and biologic challenges associated with moving posterior teeth over a long distance through the maxillary sinus, a successful outcome was obtained, with significant bone modeling of the maxillary sinus. The results demonstrate that a carefully selected force system can overcome the anatomic limitations of moving tooth against the cortical bone of the maxillary sinus wall in adult patients.},
keywords = {},
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.
@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 = {},
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 |
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. |
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 |
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. |
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. |
2019 |
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. |
2018 |
Liu, S; Oh, H; Chambers, D; Baumrind, S; Xu, T: Interpreting Weightings of the Peer Assessment Rating Index and the Discrepancy Index across Contexts on Chinese Patients.. In: European Journal of Orthodontics, vol. 40, no. 2, pp. 157-163, 2018. (Type: Journal Article | Abstract | Links | BibTeX | Tags: clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, Growth, hyperdivergent, malocclusion severity, mandibular asymmetry, Peer Assessment Rating Index, teaching, vertical control)@article{Liu2017b, Determine optimal weightings of Peer Assessment Rating (PAR) index and Discrepancy Index (DI) for malocclusion severity assessment in Chinese orthodontic patients. |
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). |
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. |
Afrand, Mona; Oh, Heesoo; Flores-Mirand, Carlos; Lagravère-Vich, Manuel O.: Growth changes in the anterior and middle cranial bases assessed with cone-beam computed tomography in adolescents. In: American Journal of Orthodontics and Dentofacial Orthopedics, vol. 151, no. 2, pp. 342-50, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: Adolescents, Cone-beam computed tomography, Cranial base, Growth)@article{Afrand2017, Introduction: Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionally evaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in the anterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial bases with growth were evaluated by using the previously selected landmarks. Methods: Cone-beam computed tomography images of 10 dry skulls were used to identify useful landmarks from different areas of the anterior and middle cranial bases based on their reliability and accuracy. These selected landmarks were identified in the images of an already available sample of adolescents (n 560) taken at 2 time points (19 months apart) to assess dimensional changes with growth. Results: The majority of the proposed 3-dimensional landmarks with 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 of increases in size. However, the mean amounts of increase in these transverse distances were equal to or less than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior and posterior clinoid processes. The vertical dimensions showed evidence of some changes, but these were within 2% of the original distances. Conclusions: In this adolescent sample, minor growth-related changes were 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 can be used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017; 151:342-50) |
Currie, Kris; Sawchuk, Dena; Saltaji, Humam; Oh, Heesoo; Flores-Mirand, Carlos; Lagravère-Vich, Manuel O.: Posterior cranial base natural growth and development: A systematic review. In: Angle Orthodontist, no. 87, pp. 897–910, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: Cranial base, Growth)@article{Currie2017, Objective: To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba). Materials and Methods: The search was performed on MEDLINE, Embase, PubMed, and all EBM Reviews electronic databases. In addition, reference lists of the included studies were hand- searched. Articles were included if they analyzed posterior cranial-base growth in humans specifically. Study selection, data extraction, and risk of bias assessment were completed in duplicate. A meta-analysis was not justified. Results: Finally, 23 published studies were selected: 5 cross-sectional and 18 cohort studies. Articles were published between 1955 and 2015, and all were published in English. The sample sizes varied between 20 and 397 individuals and consisted of craniofacial measurements from either living or deceased human skulls. Validity of the measurements was not determined in any of the studies, while six papers reported some form of reliability assessment. All the articles included multiple time points within the same population or data from multiple age groups. Growth of S-Ba was generally agreed to be from spheno-occipital synchondrosis growth. Basion displaced downward and backward and sella turcica moved downward and backward during craniofacial growth. Timing of cessation of S-Ba growth was not conclusive due to limited identified evidence. Conclusions: Current evidence suggests that S-Ba is not totally stable, as its dimensions change throughout craniofacial growth and a minor dimensional change is observed even in late adulthood. (Angle Orthod. 2017;87:897–910.) |
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. |
2014 |
Oh, H; Herchold, K; et al,: Orthodontic tooth movement through the maxillary sinus in an adult patient with multiple missing teeth. . In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 146, no. 4, pp. 493-505, 2014. (Type: Journal Article | Abstract | Links | BibTeX | Tags: Cone-beam computed tomography, fixed appliances, Growth, hyperdivergent, orthodontic, Peer Assessment Rating Index, research, vertical control)@article{Oh2014, This case report describes the successful orthodontic tooth movement through the maxillary sinus in an adult patient. A 41-year-old Asian woman had severe lip protrusion and multiple missing posterior teeth. Her orthodontic treatment included the extraction of 2 teeth, maximum retraction of the incisors using the extraction spaces and the existing spaces from the missing molars, and closure of all remaining spaces. Even though the treatment time was extended because of the anatomic and biologic challenges associated with moving posterior teeth over a long distance through the maxillary sinus, a successful outcome was obtained, with significant bone modeling of the maxillary sinus. The results demonstrate that a carefully selected force system can overcome the anatomic limitations of moving tooth against the cortical bone of the maxillary sinus wall in adult patients. |
2009 |
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. |
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. |