Publications
2024
YJ, Choi; H, Suh; JJ, Park; JH, Park
Anterior open bite correction via molar intrusion: Diagnosis, advantages, and complications Journal Article
In: J World Fed Orthod, vol. S2212-4438, iss. 23, 2024.
Abstract | Links | BibTeX | Tags: anterior openbite, Molar intrusion, Temporary skeletal anchorage devices, Treatment planning, Vertical malocclusions
@article{Suh2023b,
title = {Anterior open bite correction via molar intrusion: Diagnosis, advantages, and complications},
author = {Choi YJ and Suh H and Park JJ and Park JH},
url = {https://pubmed.ncbi.nlm.nih.gov/38185583/},
doi = {10.1016/j.ejwf.2023.12.006},
year = {2024},
date = {2024-01-06},
journal = {J World Fed Orthod},
volume = {S2212-4438},
issue = {23},
abstract = {Anterior open bite can be effectively treated nonsurgically via molar intrusion. This technique, involving the intrusion of posterior teeth using temporary skeletal anchorage devices, prompts counterclockwise rotation of the mandible. This rotation not only corrects anterior open bite but also contributes to a decrease in anterior facial height, improvements in lip incompetency, and forward movement of the chin. For successful outcomes, temporary skeletal anchorage devices, installed on both the buccal and palatal sides, must deliver equivalent intrusion force to the maxillary teeth. Treatment planning should consider factors such as skeletal discrepancies, vertical excess, incisor exposure, and configuration of the occlusal plane. Clinicians are advised to closely monitor periodontal changes and consider overcorrection to ensure lasting stability and maintenance of incisal overlap post-treatment.},
keywords = {anterior openbite, Molar intrusion, Temporary skeletal anchorage devices, Treatment planning, Vertical malocclusions},
pubstate = {published},
tppubtype = {article}
}
2023
Suh, H; Garnett, B; Mahood, K; Boyd, R; Oh, H
Short-term stability of anterior open bite treatment with clear aligners in adults Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 164, iss. 6, pp. 774-782, 2023.
Abstract | Links | BibTeX | Tags: anterior openbite, clear aligners, short-term stability
@article{Oh2023d,
title = {Short-term stability of anterior open bite treatment with clear aligners in adults},
author = {H Suh and B Garnett and K Mahood and R Boyd and H Oh },
url = {https://pubmed.ncbi.nlm.nih.gov/37552148/},
doi = {10.1016/j.ajodo.2023.05.026},
year = {2023},
date = {2023-08-07},
journal = {Am J Orthod Dentofacial Orthop},
volume = {164},
issue = {6},
pages = {774-782},
abstract = {Introduction: This study aimed to examine the stability of anterior open bite (AOB) treatment with clear aligners.
Methods: This retrospective cohort study included 52 adult AOB patients (aged >18 years; 15 males, 37 females) who underwent nonextraction clear aligner treatment and were at least 1 year posttreatment. Eleven cephalometric measurements were evaluated at pretreatment, end of active treatment, and at least 1-year posttreatment. Overbite change, the primary outcome variable, and other cephalometric changes during treatment and retention were calculated, and repeated measures analysis of variance were performed. Stepwise multiple regression was used to make a prediction equation for open bite relapse.
Results: The mean retention period was 2.1 ± 1.1 years. The mean change in overbite during treatment was 3.3 ± 1.5 mm; 6% of patients presented relapse at least 1 year after treatment completion. The mean change of overbite (0.2 ± 0.5 mm) during the retention period was not statistically significant (P = 0.59). None of the 11 cephalometric measurements showed significant change during the retention period. The prediction model showed that only the coefficient for a tongue posture issue at the initial examination was statistically significant.
Conclusions: AOB was successfully corrected in all 52 patients using only clear aligners with no additional adjunctive aids such as microimplants. When retained with maxillary and mandibular fixed retainers and maxillary and mandibular vacuum-formed retainers, there was no significant change in cephalometric measurements during the short-term retention period.},
keywords = {anterior openbite, clear aligners, short-term stability},
pubstate = {published},
tppubtype = {article}
}
Methods: This retrospective cohort study included 52 adult AOB patients (aged >18 years; 15 males, 37 females) who underwent nonextraction clear aligner treatment and were at least 1 year posttreatment. Eleven cephalometric measurements were evaluated at pretreatment, end of active treatment, and at least 1-year posttreatment. Overbite change, the primary outcome variable, and other cephalometric changes during treatment and retention were calculated, and repeated measures analysis of variance were performed. Stepwise multiple regression was used to make a prediction equation for open bite relapse.
Results: The mean retention period was 2.1 ± 1.1 years. The mean change in overbite during treatment was 3.3 ± 1.5 mm; 6% of patients presented relapse at least 1 year after treatment completion. The mean change of overbite (0.2 ± 0.5 mm) during the retention period was not statistically significant (P = 0.59). None of the 11 cephalometric measurements showed significant change during the retention period. The prediction model showed that only the coefficient for a tongue posture issue at the initial examination was statistically significant.
Conclusions: AOB was successfully corrected in all 52 patients using only clear aligners with no additional adjunctive aids such as microimplants. When retained with maxillary and mandibular fixed retainers and maxillary and mandibular vacuum-formed retainers, there was no significant change in cephalometric measurements during the short-term retention period.
2022
Suh, H; Garnett, B Shen; Mahood, K; Boyd, RL; Oh, H
Treatment of anterior open bites using non-extraction clear aligner therapy in adult patients Journal Article
In: Korean J Orthod, vol. 52, iss. 5, pp. 383-384, 2022.
Abstract | Links | BibTeX | Tags: aligner therapy, anterior openbite, clear aligners, non-extraction
@article{Oh2022e,
title = {Treatment of anterior open bites using non-extraction clear aligner therapy in adult patients},
author = {H Suh and B Shen Garnett and K Mahood and RL Boyd and H Oh},
url = {https://pubmed.ncbi.nlm.nih.gov/36148645/},
doi = {10.4041/kjod21.180.r},
year = {2022},
date = {2022-09-25},
urldate = {2022-09-25},
journal = {Korean J Orthod},
volume = {52},
issue = {5},
pages = {383-384},
abstract = {Objective: The purpose of this study was to examine the effectiveness and mechanism of clear aligner therapy for the correction of anterior open bite in adult nonextraction cases. Methods: Sixty-nine adult patients with anterior open bite were enrolled and classified into Angle's Class I, II, and III groups. Fifty patients presented with skeletal open bite (mandibular plane angle [MPA] ≥ 38°), whereas 19 presented with dental open bite. Fifteen cephalometric landmarks were identified before (T1) and after (T2) treatment. The magnitudes of planned and actual movements of the incisors and molars were calculated. Results: Positive overbite was achieved in 94% patients, with a mean final overbite of 1.1 ± 0.8 mm. The mean change in overbite was 3.3 ± 1.4 mm. With clear aligners alone, 0.36 ± 0.58 mm of maxillary molar intrusion was achieved. Compared with the Class I group, the Class II group showed greater maxillary molar intrusion and MPA reduction. The Class III group showed greater mandibular incisor extrusion with no significant vertical skeletal changes. Conclusions: Clear aligners can be effective in controlling the vertical dimension and correcting mild to moderate anterior open bite in adult nonextraction cases. The treatment mechanism for Class III patients significantly differed from that for Class I and Class II patients. Maxillary incisor extrusion in patients with dental open bite and MPA reduction with mandibular incisor extrusion in patients with skeletal open bite are the most significant contributing factors for open bite closure.},
keywords = {aligner therapy, anterior openbite, clear aligners, non-extraction},
pubstate = {published},
tppubtype = {article}
}
Phi, L; Albertson, B; Hatcher, D; Rathi, S; Park, J; Oh, H
Condylar degeneration in anterior open bite patients: A cone-beam computed tomography (CBCT) study. Journal Article
In: Oral Surgery Oral Med Oral Path Oral Radiology , vol. 133, iss. 2, pp. 221-228, 2022.
Abstract | Links | BibTeX | Tags: anterior openbite, CBCT, condylar degeneration, Cone-beam computed tomography
@article{Oh2022g,
title = {Condylar degeneration in anterior open bite patients: A cone-beam computed tomography (CBCT) study.},
author = {L Phi and B Albertson and D Hatcher and S Rathi and J Park and H Oh },
url = {https://pubmed.ncbi.nlm.nih.gov/34503937/},
doi = {10.1016/j.oooo.2021.07.019},
year = {2022},
date = {2022-02-01},
journal = {Oral Surgery Oral Med Oral Path Oral Radiology },
volume = {133},
issue = {2},
pages = {221-228},
abstract = {Objectives: The purpose of this study was to investigate the prevalence of condylar degeneration in patients with anterior open bites (AOB).
Study design: Cone beam computed tomography (CBCT) scans of 194 patients with AOB (108 with skeletal open bites and 86 with dental open bites) and 100 patients serving as controls were included in this retrospective study. Two oral and maxillofacial radiologists categorized each of the 588 condyles as normal, degenerative-active, or degenerative-repair. The χ2 analysis with Bonferroni adjustment was used to evaluate the relationship of condylar status (normal vs degenerative) to anterior open bites.
Results: Of the 103 degenerative condyles, there were 59 in the group with skeletal open bites, 14 in the group with dental open bites, and 30 in the control group. Condylar degeneration occurred twice as frequently in patients with skeletal open bites as it did in the control group (P < .0001). Conversely, a greater frequency of normal condyles was found in the group of patients with dental open bites (P = .0002). The group with skeletal open bites also showed a significantly higher frequency of bilateral degenerative condyles (P = .0001). The frequency of condylar degeneration did not differ significantly between female and male individuals.
Conclusions: Degenerative condylar change was significantly more likely in patients with skeletal open bites and less likely in patients with dental open bites.},
keywords = {anterior openbite, CBCT, condylar degeneration, Cone-beam computed tomography},
pubstate = {published},
tppubtype = {article}
}
Study design: Cone beam computed tomography (CBCT) scans of 194 patients with AOB (108 with skeletal open bites and 86 with dental open bites) and 100 patients serving as controls were included in this retrospective study. Two oral and maxillofacial radiologists categorized each of the 588 condyles as normal, degenerative-active, or degenerative-repair. The χ2 analysis with Bonferroni adjustment was used to evaluate the relationship of condylar status (normal vs degenerative) to anterior open bites.
Results: Of the 103 degenerative condyles, there were 59 in the group with skeletal open bites, 14 in the group with dental open bites, and 30 in the control group. Condylar degeneration occurred twice as frequently in patients with skeletal open bites as it did in the control group (P < .0001). Conversely, a greater frequency of normal condyles was found in the group of patients with dental open bites (P = .0002). The group with skeletal open bites also showed a significantly higher frequency of bilateral degenerative condyles (P = .0001). The frequency of condylar degeneration did not differ significantly between female and male individuals.
Conclusions: Degenerative condylar change was significantly more likely in patients with skeletal open bites and less likely in patients with dental open bites.
2021
Bianchi, J; Goncalves, J Roberto; Ruellas, A Carlos De Oliveira; Bianchi, J Vierira Pastana; Ashman, LM; et al,
Radiographic interpretation using high-resolution Cbct to diagnose degenerative temporomandibular joint disease Journal Article
In: PLOS ONE, vol. 16, no. 8, pp. e0255937, 2021.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, fixed appliances, Growth, hyperdivergent, Mandibular fixed retainer
@article{Bianchi2021b,
title = {Radiographic interpretation using high-resolution Cbct to diagnose degenerative temporomandibular joint disease},
author = {J Bianchi and J Roberto Goncalves and A Carlos De Oliveira Ruellas and J Vierira Pastana Bianchi and LM Ashman and et al },
url = {https://pubmed.ncbi.nlm.nih.gov/34375354/},
doi = {10.1371/journal.pone.0255937},
year = {2021},
date = {2021-08-10},
urldate = {2021-08-10},
journal = {PLOS ONE},
volume = {16},
number = {8},
pages = {e0255937},
abstract = {The objective of this study was to use high-resolution cone-beam computed images (hr- CBCT) to diagnose degenerative joint disease in asymptomatic and symptomatic subjects using the Diagnostic Criteria for Temporomandibular Disorders DC/TMD imaging criteria. This observational study comprised of 92 subjects age-sex matched and divided into two groups: clinical degenerative joint disease (c-DJD, n = 46) and asymptomatic control group (n = 46). Clinical assessment of the DJD and high-resolution CBCT images (isotropic voxel size of 0.08mm) of the temporomandibular joints were performed for each participant. An American Board of Oral and Maxillofacial Radiology certified radiologist and a maxillofacial radiologist used the DC/TMD imaging criteria to evaluate the radiographic findings, followed by a consensus of the radiographic evaluation. The two radiologists presented a high agreement (Cohen's Kappa ranging from 0.80 to 0.87) for all radiographic findings (osteophyte, erosion, cysts, flattening, and sclerosis). Five patients from the c- DJD group did not present radiographic findings, being then classified as arthralgia. In the asymptomatic control group, 82.6% of the patients presented radiographic findings determinant of DJD and were then classified as osteoarthrosis or overdiagnosis. In conclusion, our results showed a high number of radiographic findings in the asymptomatic control group, and for this reason, we suggest that there is a need for additional imaging criteria to classify DJD properly in hr-CBCT images.},
keywords = {AAOF, Adolescents, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, fixed appliances, Growth, hyperdivergent, Mandibular fixed retainer},
pubstate = {published},
tppubtype = {article}
}
Knigge, R; McNulty, K; Oh, H; Hardin, A; Leary, E; Duren, D; Valathan, M; Sherwood, R
Geometric morphometric analysis of growth patterns among facial types. Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 160, no. 3, pp. 430-441, 2021.
Abstract | Links | BibTeX | Tags: Adolescents, anterior openbite, Cranial base, craniofacial, extraction, Mandibular fixed retainer, retrospective, vertical control
@article{Knigge2020,
title = {Geometric morphometric analysis of growth patterns among facial types. },
author = {R Knigge and K McNulty and H Oh and A Hardin and E Leary and D Duren and M Valathan and R Sherwood},
url = {https://www.sciencedirect.com/science/article/pii/S0889540621003486?via%3Dihub},
doi = {10.1016/j.ajodo.2020.04.038},
year = {2021},
date = {2021-06-23},
urldate = {2021-06-23},
journal = {Am J Orthod Dentofacial Orthop},
volume = {160},
number = {3},
pages = {430-441},
abstract = {Extreme patterns of vertical facial divergence are of great importance to clinicians because of their association with dental malocclusion and functional problems of the orofacial complex. Understanding the growth patterns associated with vertical facial divergence is critical for clinicians to provide optimal treatment. This study evaluates and compares growth patterns from childhood to adulthood among 3 classifications of vertical facial divergence using longitudinal, lateral cephalograms from the Craniofacial Growth Consortium Study.},
keywords = {Adolescents, anterior openbite, Cranial base, craniofacial, extraction, Mandibular fixed retainer, retrospective, vertical control},
pubstate = {published},
tppubtype = {article}
}
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}
}
2020
Sherwood, R; Oh, H; Valiathan, M; McNulty, K; Duren, D; Knigge, R; Hardin, A; Holzhauser, C; Middleton, K
Bayesian Approach to Longitudinal Craniofacial Growth: The Craniofacial Growth Consortium Study. Journal Article
In: American Association of Orthodontists Foundation, 2020.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, Cranial base, Growth, hyperdivergent, Mandibular fixed retainer
@article{Sherwood2020,
title = {Bayesian Approach to Longitudinal Craniofacial Growth: The Craniofacial Growth Consortium Study.},
author = {R Sherwood and H Oh and M Valiathan and K McNulty and D Duren and R Knigge and A Hardin and C Holzhauser and K Middleton},
url = {https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.24520},
doi = {10.1002/ar.24520},
year = {2020},
date = {2020-10-04},
urldate = {2020-10-04},
journal = {American Association of Orthodontists Foundation},
abstract = {Early in the 20th century, a series of studies were initiated across North America to investigate and characterize childhood growth. The Craniofacial Growth Consortium Study (CGCS) combines craniofacial records from six of those growth studies (15,407 lateral cephalograms from 1,913 individuals; 956 females, 957 males, primarily European descent). Standard cephalometric points collected from the six studies in the CGCS allows direct comparison of craniofacial growth patterns across six North American locations. Three assessors collected all cephalometric points and the coordinates were averaged for each point. Twelve measures were calculated from the averaged coordinates. We implemented a multilevel double logistic equation to estimate growth trajectories fitting each trait separately by sex. Using Bayesian inference, we fit three models for each trait with different random effects structures to compare differences in growth patterns among studies. The models successfully identified important growth milestones (e.g., age at peak growth velocity, age at cessation of growth) for most traits. In a small number of cases, these milestones could not be determined due to truncated age ranges for some studies and slow, steady growth in some measurements. Results demonstrate great similarity among the six growth studies regarding craniofacial growth milestone estimates and the overall shape of the growth curve. These similarities suggest minor variation among studies resulting from differences in protocol, sample, or possible geographic variation. The analyses presented support combining the studies into the CGCS without substantial concerns of bias. The CGCS, therefore, provides an unparalleled opportunity to examine craniofacial growth from childhood into adulthood.},
keywords = {AAOF, Adolescents, anterior openbite, Cranial base, Growth, hyperdivergent, Mandibular fixed retainer},
pubstate = {published},
tppubtype = {article}
}
Serge, B; Maxime, D; Bianchi, J; Antonio, R; Lucia, C; Marilia, Y; Joao, G; Erika, C; Fabiana, S; Beatriz, P; Juan, P; Kayvan, N; Jonathan, G; Reza, S
3D Auto-Segmentation of Mandibular Condyles Journal Article
In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), pp. 1270-1273, 2020.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, Peer Assessment Rating Index, Posttreatment, teaching
@article{Brosset2020,
title = {3D Auto-Segmentation of Mandibular Condyles},
author = {B Serge and D Maxime and J Bianchi and R Antonio and C Lucia and Y Marilia and G Joao and C Erika and S Fabiana and P Beatriz and P Juan and N Kayvan and G Jonathan and S Reza },
url = {https://pubmed.ncbi.nlm.nih.gov/33018219/},
doi = {10.1109/EMBC44109.2020.9175692},
year = {2020},
date = {2020-07-00},
urldate = {2020-07-00},
journal = {2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)},
pages = {1270-1273},
abstract = {Temporomandibular joints (TMJ) like a hinge connect the jawbone to the skull. TMJ disorders could cause pain in the jaw joint and the muscles controlling jaw movement. However, the disease cannot be diagnosed until it becomes symptomatic. It has been shown that bone resorption at the condyle articular surface is already evident at initial diagnosis of TMJ Osteoarthritis (OA). Therefore, analyzing the bone structure will facilitate the disease diagnosis. The important step towards this analysis is the condyle segmentation. This article deals with a method to automatically segment the temporomandibular joint condyle out of cone beam CT (CBCT) scans. In the proposed method we denoise images and apply 3D active contour and morphological operations to segment the condyle. The experimental results show that the proposed method yields the Dice score of 0.9461 with the standards deviation of 0.0888 when it is applied on CBCT images of 95 patients. This segmentation will allow large datasets to be analyzed more efficiently towards data sciences and machine learning approaches for disease classification.},
keywords = {AAOF, Adolescents, anterior openbite, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, Peer Assessment Rating Index, Posttreatment, teaching},
pubstate = {published},
tppubtype = {article}
}
2019
Oh, H; Knigge, R; Hardin, A; Sherwood, R; Duren, D; Valathan, M; Leary, E; McNulty, K
Predicting Adult Facial Type From Mandibular Landmark Data At Young Ages. Journal Article
In: Orthod Craniofac Res, vol. 1, pp. 154-162, 2019.
Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, Cone-beam computed tomography, Cranial base, Mandibular remodeling
@article{Oh2019,
title = {Predicting Adult Facial Type From Mandibular Landmark Data At Young Ages.},
author = {H Oh and R Knigge and A Hardin and R Sherwood and D Duren and M Valathan and E Leary and K McNulty},
url = {https://pubmed.ncbi.nlm.nih.gov/31074133/},
doi = {10.1111/ocr.12296.},
year = {2019},
date = {2019-05-22},
urldate = {2019-05-22},
journal = {Orthod Craniofac Res},
volume = {1},
pages = {154-162},
abstract = {To assess the potential of predicting adult facial types at different stages of mandibular development.},
keywords = {AAOF, anterior openbite, Cone-beam computed tomography, Cranial base, Mandibular remodeling},
pubstate = {published},
tppubtype = {article}
}
Sam, A; Currie, K; Oh, H; Flores-Mir, C; Lagravere-Vich, M
Reliability of different 3D cephalometric landmarks in CBCT: A systematic review. Journal Article
In: Angle Orthod, vol. 89, no. 2, pp. 317-332, 2019.
Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, Cone-beam computed tomography, Cranial base, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling
@article{Sam2019,
title = {Reliability of different 3D cephalometric landmarks in CBCT: A systematic review.},
author = {A Sam and K Currie and H Oh and C Flores-Mir and M Lagravere-Vich},
url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8120873/},
doi = {10.2319/042018-302.1},
year = {2019},
date = {2019-03-00},
urldate = {2019-03-00},
journal = {Angle Orthod},
volume = {89},
number = {2},
pages = {317-332},
abstract = {Conventional two-dimensional (2D) cephalometric radiography is an integral part of orthodontic patient diagnosis and treatment planning. One must be mindful of its limitations as it indeed is a 2D representation of a vaster three-dimensional (3D) object. Issues with projection errors, landmark identification, and measurement inaccuracies impose significant limitations, which may now be overcome with the advent of cone-beam computed tomography (CBCT). A systematic review of the reliability of different 3D cephalometric landmarks in CBCT imaging was conducted.},
keywords = {AAOF, anterior openbite, Cone-beam computed tomography, Cranial base, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling},
pubstate = {published},
tppubtype = {article}
}
2017
Xu, Y; Oh, H; Lagravere-Vich, M
Malocclusion Class II-Division 1 skeletal and dental relationships measured by Cone-Beam Computed Tomography. Journal Article
In: International Journal of Orthodontics, vol. 15, no. 3, pp. 365-387, 2017.
Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, pressure tension, retrospective
@article{Xu2017,
title = {Malocclusion Class II-Division 1 skeletal and dental relationships measured by Cone-Beam Computed Tomography. },
author = {Y Xu and H Oh and M Lagravere-Vich},
url = {https://www.sciencedirect.com/science/article/pii/S1761722717300621},
doi = {10.1016/j.ortho.2017.06.014},
year = {2017},
date = {2017-09-00},
journal = {International Journal of Orthodontics},
volume = {15},
number = {3},
pages = {365-387},
abstract = {The purpose of this study was to locate traditionally-used landmarks in two-dimensional (2D) images and newly-suggested ones in three-dimensional (3D) images (cone-beam computer tomographies [CBCTs]) and determine possible relationships between them to categorize patients with Class II-1 malocclusion.},
keywords = {AAOF, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, pressure tension, retrospective},
pubstate = {published},
tppubtype = {article}
}
Hwang, 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}
}
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}
}
2008
Xu, T-M; Korn, EL; Liu, Y; Oh, HS; Lee, KH; Baumrind, S
"Facial Attractiveness": Ranking of End-of-Treatment Facial Photographs by Chinese and U.S. Orthodontists. Journal Article
In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 134, no. 1, pp. 74-84, 2008.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, open bite, retrospective
@article{Xu2008,
title = {"Facial Attractiveness": Ranking of End-of-Treatment Facial Photographs by Chinese and U.S. Orthodontists.},
author = {T-M Xu and EL Korn and Y Liu and HS Oh and KH Lee and S Baumrind},
url = {https://pubmed.ncbi.nlm.nih.gov/18617106/},
doi = {10.1016/j.ajodo.2006.08.023},
year = {2008},
date = {2008-07-00},
journal = {American Journal of Orthodontics & Dentofacial Orthopedics},
volume = {134},
number = {1},
pages = {74-84},
abstract = {In this study, we assessed agreement and disagreement among pairs of Chinese and US orthodontists in the ranking for "facial attractiveness" of end-of-treatment photographs of growing Chinese and white orthodontic patients.},
keywords = {AAOF, Adolescents, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, open bite, retrospective},
pubstate = {published},
tppubtype = {article}
}
2001
SK, Lee; YS, Kim; HS, Oh; KH, Yang; EC, Kim; JG, Chi
Prenatal development of the human mandible. Journal Article
In: The Anatomical Record, vol. 263, no. 3, pp. 314-25, 2001.
Abstract | Links | BibTeX | Tags: adult, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, craniofacial, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Posttreatment, pressure tension
@article{Lee2001,
title = {Prenatal development of the human mandible. },
author = {Lee SK and Kim YS and Oh HS and Yang KH and Kim EC and Chi JG},
url = {https://pubmed.ncbi.nlm.nih.gov/11455541/},
doi = {10.1002/ar.1110},
year = {2001},
date = {2001-07-01},
journal = {The Anatomical Record},
volume = {263},
number = {3},
pages = {314-25},
abstract = {In an effort to better understand the interrelationship of the growth and development pattern of the mandible and condyle, a sequential growth pattern of human mandibles in 38 embryos and 111 fetuses were examined by serial histological sections and soft X-ray views. The basic growth pattern of the mandibular body and condyle appeared in week 7 of fertilization. Histologically, the embryonal mandible originated from primary intramembranous ossification in the fibrous mesenchymal tissue around the Meckel cartilage. From this initial ossification, the ramifying trabecular bones developed forward, backward and upward, to form the symphysis, mandibular body, and coronoid process, respectively. We named this initial ossification site of embryonal mandible as the mandibular primary growth center (MdPGC). During week 8 of fertilization, the trabecular bone of the mandibular body grew rapidly to form muscular attachments to the masseter, temporalis, and pterygoid muscles. The mandible was then rapidly separated from the Meckel cartilage and formed a condyle blastema at the posterior end of linear mandibular trabeculae. The condyle blastema, attached to the upper part of pterygoid muscle, grew backward and upward and concurrent endochondral ossification resulted in the formation of the condyle. From week 14 of fertilization, the growth of conical structure of condyle became apparent on histological and radiological examinations. The mandibular body showed a conspicuous radiating trabecular growth pattern centered at the MdPGC, located around the apical area of deciduous first molar. The condyle growth showed characteristic conical structure and abundant hematopoietic tissue in the marrow. The growth of the proximal end of condyle was also approximated to the MdPGC on radiograms. Taken together, we hypothesized that the MdPGC has an important morphogenetic affect for the development of the human mandible, providing a growth center for the trabecular bone of mandibular body and also indicating the initial growth of endochondral ossification of the condyle.},
keywords = {adult, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, craniofacial, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Posttreatment, pressure tension},
pubstate = {published},
tppubtype = {article}
}
0000
Garnett, Bella Shen; Mahood, Kimberly; Nguyen, Mai; Al-Khateeb, Aliaa; Liu, Siqi; Boyd, Robert; Oh, Heesoo
Cephalometric comparison of anterior openbite tx using clear aligners and fixed appliances Journal Article Forthcoming
In: Angle Orthodontist, Forthcoming.
Abstract | Links | BibTeX | Tags: adult, anterior openbite, clear aligners, fixed appliances, hyperdivergent, open bite, vertical control
@article{Garnett,
title = {Cephalometric comparison of anterior openbite tx using clear aligners and fixed appliances},
author = {Bella Shen Garnett and Kimberly Mahood and Mai Nguyen and Aliaa Al-Khateeb and Siqi Liu and Robert Boyd and Heesoo Oh},
doi = {10.2319/010418-4.1},
journal = {Angle Orthodontist},
abstract = {Objectives: To compare fixed appliances and clear aligner therapy in correcting anterior open biteand in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns.
Materials and Methods: In this retrospective study, two treatment groups of adult (_18 years old)hyperdivergent patients (mandibular plane angles of _388) with anterior open bites were included:17 fixed appliance patients and 36 clear aligner patients. Thirteen cephalometric measurementsrepresenting the vertical dimension were reported for each group. A two-sample t-test was used toassess differences in changes in mandibular plane angle and overbite between the two treatmentgroups.
Results: There were no statistical differences found in the magnitude of overbite correction and thechanges in any of the cephalometric measurements for vertical control. The clear aligner groupshowed a slightly greater amount of lower incisor extrusion (P . .009). The main mechanism ofopen bite correction was similar between the two treatment groups and was accomplished throughretroclination of the upper and lower incisors while maintaining the vertical position of the upper andlower molars.
Conclusions: Cephalometric comparison of anterior open bite correction and changes in themandibular plane angle associated with use of clear aligners and fixed appliances did notdemonstrate statistically significant differences in adult hyperdivergent patients. (Angle Orthod.0000;00:000–000.)},
keywords = {adult, anterior openbite, clear aligners, fixed appliances, hyperdivergent, open bite, vertical control},
pubstate = {forthcoming},
tppubtype = {article}
}
Materials and Methods: In this retrospective study, two treatment groups of adult (_18 years old)hyperdivergent patients (mandibular plane angles of _388) with anterior open bites were included:17 fixed appliance patients and 36 clear aligner patients. Thirteen cephalometric measurementsrepresenting the vertical dimension were reported for each group. A two-sample t-test was used toassess differences in changes in mandibular plane angle and overbite between the two treatmentgroups.
Results: There were no statistical differences found in the magnitude of overbite correction and thechanges in any of the cephalometric measurements for vertical control. The clear aligner groupshowed a slightly greater amount of lower incisor extrusion (P . .009). The main mechanism ofopen bite correction was similar between the two treatment groups and was accomplished throughretroclination of the upper and lower incisors while maintaining the vertical position of the upper andlower molars.
Conclusions: Cephalometric comparison of anterior open bite correction and changes in themandibular plane angle associated with use of clear aligners and fixed appliances did notdemonstrate statistically significant differences in adult hyperdivergent patients. (Angle Orthod.0000;00:000–000.)
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}
}
Suh, H; Garnett, B Shen; Mahood, K; Mahjoub, N; Boyd, RL; Oh, H
Treatment of anterior open bites using non-extraction clear aligner therapy in adult patients Journal Article
In: The Korean Journal of Orthodontics , vol. 52, iss. 3, 0000.
Abstract | Links | BibTeX | Tags: AAOF, aligner, aligner therapy, anterior openbite, non-extraction
@article{Oh2022c,
title = {Treatment of anterior open bites using non-extraction clear aligner therapy in adult patients},
author = {H Suh and B Shen Garnett and K Mahood and N Mahjoub and RL Boyd and H Oh},
doi = {10.4041/kjod21.180},
journal = {The Korean Journal of Orthodontics },
volume = {52},
issue = {3},
abstract = {Objective: The purpose of this study was to examine the effectiveness and mechanism of clear aligner therapy for the correction of anterior open bite in adult nonextraction cases. Methods: Sixty-nine adult patients with anterior open bite were enrolled and classified into Angle's Class I, II, and III groups. Fifty patients presented with skeletal open bite (mandibular plane angle [MPA] ≥ 38°), whereas 19 presented with dental open bite. Fifteen cephalometric landmarks were identified before (T1) and after (T2) treatment. The magnitudes of planned and actual movements of the incisors and molars were calculated. Results: Positive overbite was achieved in 94% patients, with a mean final overbite of 1.1 ± 0.8 mm. The mean change in overbite was 3.3 ± 1.4 mm. With clear aligners alone, 0.36 ± 0.58 mm of maxillary molar intrusion was achieved. Compared with the Class I group, the Class II group showed greater maxillary molar intrusion and MPA reduction. The Class III group showed greater mandibular incisor extrusion with no significant vertical skeletal changes. Conclusions: Clear aligners can be effective in controlling the vertical dimension and correcting mild to moderate anterior open bite in adult nonextraction cases. The treatment mechanism for Class III patients significantly differed from that for Class I and Class II patients. Maxillary incisor extrusion in patients with dental open bite and MPA reduction with mandibular incisor extrusion in patients with skeletal open bite are the most significant contributing factors for open bite closure.},
keywords = {AAOF, aligner, aligner therapy, anterior openbite, non-extraction},
pubstate = {published},
tppubtype = {article}
}
YJ, Choi; H, Suh; JJ, Park; JH, Park
Anterior open bite correction via molar intrusion: Diagnosis, advantages, and complications Journal Article
In: J World Fed Orthod, vol. S2212-4438, iss. 23, 2024.
@article{Suh2023b,
title = {Anterior open bite correction via molar intrusion: Diagnosis, advantages, and complications},
author = {Choi YJ and Suh H and Park JJ and Park JH},
url = {https://pubmed.ncbi.nlm.nih.gov/38185583/},
doi = {10.1016/j.ejwf.2023.12.006},
year = {2024},
date = {2024-01-06},
journal = {J World Fed Orthod},
volume = {S2212-4438},
issue = {23},
abstract = {Anterior open bite can be effectively treated nonsurgically via molar intrusion. This technique, involving the intrusion of posterior teeth using temporary skeletal anchorage devices, prompts counterclockwise rotation of the mandible. This rotation not only corrects anterior open bite but also contributes to a decrease in anterior facial height, improvements in lip incompetency, and forward movement of the chin. For successful outcomes, temporary skeletal anchorage devices, installed on both the buccal and palatal sides, must deliver equivalent intrusion force to the maxillary teeth. Treatment planning should consider factors such as skeletal discrepancies, vertical excess, incisor exposure, and configuration of the occlusal plane. Clinicians are advised to closely monitor periodontal changes and consider overcorrection to ensure lasting stability and maintenance of incisal overlap post-treatment.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Suh, H; Garnett, B; Mahood, K; Boyd, R; Oh, H
Short-term stability of anterior open bite treatment with clear aligners in adults Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 164, iss. 6, pp. 774-782, 2023.
@article{Oh2023d,
title = {Short-term stability of anterior open bite treatment with clear aligners in adults},
author = {H Suh and B Garnett and K Mahood and R Boyd and H Oh },
url = {https://pubmed.ncbi.nlm.nih.gov/37552148/},
doi = {10.1016/j.ajodo.2023.05.026},
year = {2023},
date = {2023-08-07},
journal = {Am J Orthod Dentofacial Orthop},
volume = {164},
issue = {6},
pages = {774-782},
abstract = {Introduction: This study aimed to examine the stability of anterior open bite (AOB) treatment with clear aligners.
Methods: This retrospective cohort study included 52 adult AOB patients (aged >18 years; 15 males, 37 females) who underwent nonextraction clear aligner treatment and were at least 1 year posttreatment. Eleven cephalometric measurements were evaluated at pretreatment, end of active treatment, and at least 1-year posttreatment. Overbite change, the primary outcome variable, and other cephalometric changes during treatment and retention were calculated, and repeated measures analysis of variance were performed. Stepwise multiple regression was used to make a prediction equation for open bite relapse.
Results: The mean retention period was 2.1 ± 1.1 years. The mean change in overbite during treatment was 3.3 ± 1.5 mm; 6% of patients presented relapse at least 1 year after treatment completion. The mean change of overbite (0.2 ± 0.5 mm) during the retention period was not statistically significant (P = 0.59). None of the 11 cephalometric measurements showed significant change during the retention period. The prediction model showed that only the coefficient for a tongue posture issue at the initial examination was statistically significant.
Conclusions: AOB was successfully corrected in all 52 patients using only clear aligners with no additional adjunctive aids such as microimplants. When retained with maxillary and mandibular fixed retainers and maxillary and mandibular vacuum-formed retainers, there was no significant change in cephalometric measurements during the short-term retention period.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Methods: This retrospective cohort study included 52 adult AOB patients (aged >18 years; 15 males, 37 females) who underwent nonextraction clear aligner treatment and were at least 1 year posttreatment. Eleven cephalometric measurements were evaluated at pretreatment, end of active treatment, and at least 1-year posttreatment. Overbite change, the primary outcome variable, and other cephalometric changes during treatment and retention were calculated, and repeated measures analysis of variance were performed. Stepwise multiple regression was used to make a prediction equation for open bite relapse.
Results: The mean retention period was 2.1 ± 1.1 years. The mean change in overbite during treatment was 3.3 ± 1.5 mm; 6% of patients presented relapse at least 1 year after treatment completion. The mean change of overbite (0.2 ± 0.5 mm) during the retention period was not statistically significant (P = 0.59). None of the 11 cephalometric measurements showed significant change during the retention period. The prediction model showed that only the coefficient for a tongue posture issue at the initial examination was statistically significant.
Conclusions: AOB was successfully corrected in all 52 patients using only clear aligners with no additional adjunctive aids such as microimplants. When retained with maxillary and mandibular fixed retainers and maxillary and mandibular vacuum-formed retainers, there was no significant change in cephalometric measurements during the short-term retention period.
Suh, H; Garnett, B Shen; Mahood, K; Boyd, RL; Oh, H
Treatment of anterior open bites using non-extraction clear aligner therapy in adult patients Journal Article
In: Korean J Orthod, vol. 52, iss. 5, pp. 383-384, 2022.
@article{Oh2022e,
title = {Treatment of anterior open bites using non-extraction clear aligner therapy in adult patients},
author = {H Suh and B Shen Garnett and K Mahood and RL Boyd and H Oh},
url = {https://pubmed.ncbi.nlm.nih.gov/36148645/},
doi = {10.4041/kjod21.180.r},
year = {2022},
date = {2022-09-25},
urldate = {2022-09-25},
journal = {Korean J Orthod},
volume = {52},
issue = {5},
pages = {383-384},
abstract = {Objective: The purpose of this study was to examine the effectiveness and mechanism of clear aligner therapy for the correction of anterior open bite in adult nonextraction cases. Methods: Sixty-nine adult patients with anterior open bite were enrolled and classified into Angle's Class I, II, and III groups. Fifty patients presented with skeletal open bite (mandibular plane angle [MPA] ≥ 38°), whereas 19 presented with dental open bite. Fifteen cephalometric landmarks were identified before (T1) and after (T2) treatment. The magnitudes of planned and actual movements of the incisors and molars were calculated. Results: Positive overbite was achieved in 94% patients, with a mean final overbite of 1.1 ± 0.8 mm. The mean change in overbite was 3.3 ± 1.4 mm. With clear aligners alone, 0.36 ± 0.58 mm of maxillary molar intrusion was achieved. Compared with the Class I group, the Class II group showed greater maxillary molar intrusion and MPA reduction. The Class III group showed greater mandibular incisor extrusion with no significant vertical skeletal changes. Conclusions: Clear aligners can be effective in controlling the vertical dimension and correcting mild to moderate anterior open bite in adult nonextraction cases. The treatment mechanism for Class III patients significantly differed from that for Class I and Class II patients. Maxillary incisor extrusion in patients with dental open bite and MPA reduction with mandibular incisor extrusion in patients with skeletal open bite are the most significant contributing factors for open bite closure.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Phi, L; Albertson, B; Hatcher, D; Rathi, S; Park, J; Oh, H
Condylar degeneration in anterior open bite patients: A cone-beam computed tomography (CBCT) study. Journal Article
In: Oral Surgery Oral Med Oral Path Oral Radiology , vol. 133, iss. 2, pp. 221-228, 2022.
@article{Oh2022g,
title = {Condylar degeneration in anterior open bite patients: A cone-beam computed tomography (CBCT) study.},
author = {L Phi and B Albertson and D Hatcher and S Rathi and J Park and H Oh },
url = {https://pubmed.ncbi.nlm.nih.gov/34503937/},
doi = {10.1016/j.oooo.2021.07.019},
year = {2022},
date = {2022-02-01},
journal = {Oral Surgery Oral Med Oral Path Oral Radiology },
volume = {133},
issue = {2},
pages = {221-228},
abstract = {Objectives: The purpose of this study was to investigate the prevalence of condylar degeneration in patients with anterior open bites (AOB).
Study design: Cone beam computed tomography (CBCT) scans of 194 patients with AOB (108 with skeletal open bites and 86 with dental open bites) and 100 patients serving as controls were included in this retrospective study. Two oral and maxillofacial radiologists categorized each of the 588 condyles as normal, degenerative-active, or degenerative-repair. The χ2 analysis with Bonferroni adjustment was used to evaluate the relationship of condylar status (normal vs degenerative) to anterior open bites.
Results: Of the 103 degenerative condyles, there were 59 in the group with skeletal open bites, 14 in the group with dental open bites, and 30 in the control group. Condylar degeneration occurred twice as frequently in patients with skeletal open bites as it did in the control group (P < .0001). Conversely, a greater frequency of normal condyles was found in the group of patients with dental open bites (P = .0002). The group with skeletal open bites also showed a significantly higher frequency of bilateral degenerative condyles (P = .0001). The frequency of condylar degeneration did not differ significantly between female and male individuals.
Conclusions: Degenerative condylar change was significantly more likely in patients with skeletal open bites and less likely in patients with dental open bites.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Study design: Cone beam computed tomography (CBCT) scans of 194 patients with AOB (108 with skeletal open bites and 86 with dental open bites) and 100 patients serving as controls were included in this retrospective study. Two oral and maxillofacial radiologists categorized each of the 588 condyles as normal, degenerative-active, or degenerative-repair. The χ2 analysis with Bonferroni adjustment was used to evaluate the relationship of condylar status (normal vs degenerative) to anterior open bites.
Results: Of the 103 degenerative condyles, there were 59 in the group with skeletal open bites, 14 in the group with dental open bites, and 30 in the control group. Condylar degeneration occurred twice as frequently in patients with skeletal open bites as it did in the control group (P < .0001). Conversely, a greater frequency of normal condyles was found in the group of patients with dental open bites (P = .0002). The group with skeletal open bites also showed a significantly higher frequency of bilateral degenerative condyles (P = .0001). The frequency of condylar degeneration did not differ significantly between female and male individuals.
Conclusions: Degenerative condylar change was significantly more likely in patients with skeletal open bites and less likely in patients with dental open bites.
Bianchi, J; Goncalves, J Roberto; Ruellas, A Carlos De Oliveira; Bianchi, J Vierira Pastana; Ashman, LM; et al,
Radiographic interpretation using high-resolution Cbct to diagnose degenerative temporomandibular joint disease Journal Article
In: PLOS ONE, vol. 16, no. 8, pp. e0255937, 2021.
@article{Bianchi2021b,
title = {Radiographic interpretation using high-resolution Cbct to diagnose degenerative temporomandibular joint disease},
author = {J Bianchi and J Roberto Goncalves and A Carlos De Oliveira Ruellas and J Vierira Pastana Bianchi and LM Ashman and et al },
url = {https://pubmed.ncbi.nlm.nih.gov/34375354/},
doi = {10.1371/journal.pone.0255937},
year = {2021},
date = {2021-08-10},
urldate = {2021-08-10},
journal = {PLOS ONE},
volume = {16},
number = {8},
pages = {e0255937},
abstract = {The objective of this study was to use high-resolution cone-beam computed images (hr- CBCT) to diagnose degenerative joint disease in asymptomatic and symptomatic subjects using the Diagnostic Criteria for Temporomandibular Disorders DC/TMD imaging criteria. This observational study comprised of 92 subjects age-sex matched and divided into two groups: clinical degenerative joint disease (c-DJD, n = 46) and asymptomatic control group (n = 46). Clinical assessment of the DJD and high-resolution CBCT images (isotropic voxel size of 0.08mm) of the temporomandibular joints were performed for each participant. An American Board of Oral and Maxillofacial Radiology certified radiologist and a maxillofacial radiologist used the DC/TMD imaging criteria to evaluate the radiographic findings, followed by a consensus of the radiographic evaluation. The two radiologists presented a high agreement (Cohen's Kappa ranging from 0.80 to 0.87) for all radiographic findings (osteophyte, erosion, cysts, flattening, and sclerosis). Five patients from the c- DJD group did not present radiographic findings, being then classified as arthralgia. In the asymptomatic control group, 82.6% of the patients presented radiographic findings determinant of DJD and were then classified as osteoarthrosis or overdiagnosis. In conclusion, our results showed a high number of radiographic findings in the asymptomatic control group, and for this reason, we suggest that there is a need for additional imaging criteria to classify DJD properly in hr-CBCT images.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Knigge, R; McNulty, K; Oh, H; Hardin, A; Leary, E; Duren, D; Valathan, M; Sherwood, R
Geometric morphometric analysis of growth patterns among facial types. Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 160, no. 3, pp. 430-441, 2021.
@article{Knigge2020,
title = {Geometric morphometric analysis of growth patterns among facial types. },
author = {R Knigge and K McNulty and H Oh and A Hardin and E Leary and D Duren and M Valathan and R Sherwood},
url = {https://www.sciencedirect.com/science/article/pii/S0889540621003486?via%3Dihub},
doi = {10.1016/j.ajodo.2020.04.038},
year = {2021},
date = {2021-06-23},
urldate = {2021-06-23},
journal = {Am J Orthod Dentofacial Orthop},
volume = {160},
number = {3},
pages = {430-441},
abstract = {Extreme patterns of vertical facial divergence are of great importance to clinicians because of their association with dental malocclusion and functional problems of the orofacial complex. Understanding the growth patterns associated with vertical facial divergence is critical for clinicians to provide optimal treatment. This study evaluates and compares growth patterns from childhood to adulthood among 3 classifications of vertical facial divergence using longitudinal, lateral cephalograms from the Craniofacial Growth Consortium Study.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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}
}
Sherwood, R; Oh, H; Valiathan, M; McNulty, K; Duren, D; Knigge, R; Hardin, A; Holzhauser, C; Middleton, K
Bayesian Approach to Longitudinal Craniofacial Growth: The Craniofacial Growth Consortium Study. Journal Article
In: American Association of Orthodontists Foundation, 2020.
@article{Sherwood2020,
title = {Bayesian Approach to Longitudinal Craniofacial Growth: The Craniofacial Growth Consortium Study.},
author = {R Sherwood and H Oh and M Valiathan and K McNulty and D Duren and R Knigge and A Hardin and C Holzhauser and K Middleton},
url = {https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.24520},
doi = {10.1002/ar.24520},
year = {2020},
date = {2020-10-04},
urldate = {2020-10-04},
journal = {American Association of Orthodontists Foundation},
abstract = {Early in the 20th century, a series of studies were initiated across North America to investigate and characterize childhood growth. The Craniofacial Growth Consortium Study (CGCS) combines craniofacial records from six of those growth studies (15,407 lateral cephalograms from 1,913 individuals; 956 females, 957 males, primarily European descent). Standard cephalometric points collected from the six studies in the CGCS allows direct comparison of craniofacial growth patterns across six North American locations. Three assessors collected all cephalometric points and the coordinates were averaged for each point. Twelve measures were calculated from the averaged coordinates. We implemented a multilevel double logistic equation to estimate growth trajectories fitting each trait separately by sex. Using Bayesian inference, we fit three models for each trait with different random effects structures to compare differences in growth patterns among studies. The models successfully identified important growth milestones (e.g., age at peak growth velocity, age at cessation of growth) for most traits. In a small number of cases, these milestones could not be determined due to truncated age ranges for some studies and slow, steady growth in some measurements. Results demonstrate great similarity among the six growth studies regarding craniofacial growth milestone estimates and the overall shape of the growth curve. These similarities suggest minor variation among studies resulting from differences in protocol, sample, or possible geographic variation. The analyses presented support combining the studies into the CGCS without substantial concerns of bias. The CGCS, therefore, provides an unparalleled opportunity to examine craniofacial growth from childhood into adulthood.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Serge, B; Maxime, D; Bianchi, J; Antonio, R; Lucia, C; Marilia, Y; Joao, G; Erika, C; Fabiana, S; Beatriz, P; Juan, P; Kayvan, N; Jonathan, G; Reza, S
3D Auto-Segmentation of Mandibular Condyles Journal Article
In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), pp. 1270-1273, 2020.
@article{Brosset2020,
title = {3D Auto-Segmentation of Mandibular Condyles},
author = {B Serge and D Maxime and J Bianchi and R Antonio and C Lucia and Y Marilia and G Joao and C Erika and S Fabiana and P Beatriz and P Juan and N Kayvan and G Jonathan and S Reza },
url = {https://pubmed.ncbi.nlm.nih.gov/33018219/},
doi = {10.1109/EMBC44109.2020.9175692},
year = {2020},
date = {2020-07-00},
urldate = {2020-07-00},
journal = {2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)},
pages = {1270-1273},
abstract = {Temporomandibular joints (TMJ) like a hinge connect the jawbone to the skull. TMJ disorders could cause pain in the jaw joint and the muscles controlling jaw movement. However, the disease cannot be diagnosed until it becomes symptomatic. It has been shown that bone resorption at the condyle articular surface is already evident at initial diagnosis of TMJ Osteoarthritis (OA). Therefore, analyzing the bone structure will facilitate the disease diagnosis. The important step towards this analysis is the condyle segmentation. This article deals with a method to automatically segment the temporomandibular joint condyle out of cone beam CT (CBCT) scans. In the proposed method we denoise images and apply 3D active contour and morphological operations to segment the condyle. The experimental results show that the proposed method yields the Dice score of 0.9461 with the standards deviation of 0.0888 when it is applied on CBCT images of 95 patients. This segmentation will allow large datasets to be analyzed more efficiently towards data sciences and machine learning approaches for disease classification.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Oh, H; Knigge, R; Hardin, A; Sherwood, R; Duren, D; Valathan, M; Leary, E; McNulty, K
Predicting Adult Facial Type From Mandibular Landmark Data At Young Ages. Journal Article
In: Orthod Craniofac Res, vol. 1, pp. 154-162, 2019.
@article{Oh2019,
title = {Predicting Adult Facial Type From Mandibular Landmark Data At Young Ages.},
author = {H Oh and R Knigge and A Hardin and R Sherwood and D Duren and M Valathan and E Leary and K McNulty},
url = {https://pubmed.ncbi.nlm.nih.gov/31074133/},
doi = {10.1111/ocr.12296.},
year = {2019},
date = {2019-05-22},
urldate = {2019-05-22},
journal = {Orthod Craniofac Res},
volume = {1},
pages = {154-162},
abstract = {To assess the potential of predicting adult facial types at different stages of mandibular development.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sam, A; Currie, K; Oh, H; Flores-Mir, C; Lagravere-Vich, M
Reliability of different 3D cephalometric landmarks in CBCT: A systematic review. Journal Article
In: Angle Orthod, vol. 89, no. 2, pp. 317-332, 2019.
@article{Sam2019,
title = {Reliability of different 3D cephalometric landmarks in CBCT: A systematic review.},
author = {A Sam and K Currie and H Oh and C Flores-Mir and M Lagravere-Vich},
url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8120873/},
doi = {10.2319/042018-302.1},
year = {2019},
date = {2019-03-00},
urldate = {2019-03-00},
journal = {Angle Orthod},
volume = {89},
number = {2},
pages = {317-332},
abstract = {Conventional two-dimensional (2D) cephalometric radiography is an integral part of orthodontic patient diagnosis and treatment planning. One must be mindful of its limitations as it indeed is a 2D representation of a vaster three-dimensional (3D) object. Issues with projection errors, landmark identification, and measurement inaccuracies impose significant limitations, which may now be overcome with the advent of cone-beam computed tomography (CBCT). A systematic review of the reliability of different 3D cephalometric landmarks in CBCT imaging was conducted.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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}
}
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, 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}
}
Xu, T-M; Korn, EL; Liu, Y; Oh, HS; Lee, KH; Baumrind, S
"Facial Attractiveness": Ranking of End-of-Treatment Facial Photographs by Chinese and U.S. Orthodontists. Journal Article
In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 134, no. 1, pp. 74-84, 2008.
@article{Xu2008,
title = {"Facial Attractiveness": Ranking of End-of-Treatment Facial Photographs by Chinese and U.S. Orthodontists.},
author = {T-M Xu and EL Korn and Y Liu and HS Oh and KH Lee and S Baumrind},
url = {https://pubmed.ncbi.nlm.nih.gov/18617106/},
doi = {10.1016/j.ajodo.2006.08.023},
year = {2008},
date = {2008-07-00},
journal = {American Journal of Orthodontics & Dentofacial Orthopedics},
volume = {134},
number = {1},
pages = {74-84},
abstract = {In this study, we assessed agreement and disagreement among pairs of Chinese and US orthodontists in the ranking for "facial attractiveness" of end-of-treatment photographs of growing Chinese and white orthodontic patients.},
keywords = {},
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}
}
Garnett, Bella Shen; Mahood, Kimberly; Nguyen, Mai; Al-Khateeb, Aliaa; Liu, Siqi; Boyd, Robert; Oh, Heesoo
Cephalometric comparison of anterior openbite tx using clear aligners and fixed appliances Journal Article Forthcoming
In: Angle Orthodontist, Forthcoming.
@article{Garnett,
title = {Cephalometric comparison of anterior openbite tx using clear aligners and fixed appliances},
author = {Bella Shen Garnett and Kimberly Mahood and Mai Nguyen and Aliaa Al-Khateeb and Siqi Liu and Robert Boyd and Heesoo Oh},
doi = {10.2319/010418-4.1},
journal = {Angle Orthodontist},
abstract = {Objectives: To compare fixed appliances and clear aligner therapy in correcting anterior open biteand in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns.
Materials and Methods: In this retrospective study, two treatment groups of adult (_18 years old)hyperdivergent patients (mandibular plane angles of _388) with anterior open bites were included:17 fixed appliance patients and 36 clear aligner patients. Thirteen cephalometric measurementsrepresenting the vertical dimension were reported for each group. A two-sample t-test was used toassess differences in changes in mandibular plane angle and overbite between the two treatmentgroups.
Results: There were no statistical differences found in the magnitude of overbite correction and thechanges in any of the cephalometric measurements for vertical control. The clear aligner groupshowed a slightly greater amount of lower incisor extrusion (P . .009). The main mechanism ofopen bite correction was similar between the two treatment groups and was accomplished throughretroclination of the upper and lower incisors while maintaining the vertical position of the upper andlower molars.
Conclusions: Cephalometric comparison of anterior open bite correction and changes in themandibular plane angle associated with use of clear aligners and fixed appliances did notdemonstrate statistically significant differences in adult hyperdivergent patients. (Angle Orthod.0000;00:000–000.)},
keywords = {},
pubstate = {forthcoming},
tppubtype = {article}
}
Materials and Methods: In this retrospective study, two treatment groups of adult (_18 years old)hyperdivergent patients (mandibular plane angles of _388) with anterior open bites were included:17 fixed appliance patients and 36 clear aligner patients. Thirteen cephalometric measurementsrepresenting the vertical dimension were reported for each group. A two-sample t-test was used toassess differences in changes in mandibular plane angle and overbite between the two treatmentgroups.
Results: There were no statistical differences found in the magnitude of overbite correction and thechanges in any of the cephalometric measurements for vertical control. The clear aligner groupshowed a slightly greater amount of lower incisor extrusion (P . .009). The main mechanism ofopen bite correction was similar between the two treatment groups and was accomplished throughretroclination of the upper and lower incisors while maintaining the vertical position of the upper andlower molars.
Conclusions: Cephalometric comparison of anterior open bite correction and changes in themandibular plane angle associated with use of clear aligners and fixed appliances did notdemonstrate statistically significant differences in adult hyperdivergent patients. (Angle Orthod.0000;00:000–000.)
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}
}
Suh, H; Garnett, B Shen; Mahood, K; Mahjoub, N; Boyd, RL; Oh, H
Treatment of anterior open bites using non-extraction clear aligner therapy in adult patients Journal Article
In: The Korean Journal of Orthodontics , vol. 52, iss. 3, 0000.
@article{Oh2022c,
title = {Treatment of anterior open bites using non-extraction clear aligner therapy in adult patients},
author = {H Suh and B Shen Garnett and K Mahood and N Mahjoub and RL Boyd and H Oh},
doi = {10.4041/kjod21.180},
journal = {The Korean Journal of Orthodontics },
volume = {52},
issue = {3},
abstract = {Objective: The purpose of this study was to examine the effectiveness and mechanism of clear aligner therapy for the correction of anterior open bite in adult nonextraction cases. Methods: Sixty-nine adult patients with anterior open bite were enrolled and classified into Angle's Class I, II, and III groups. Fifty patients presented with skeletal open bite (mandibular plane angle [MPA] ≥ 38°), whereas 19 presented with dental open bite. Fifteen cephalometric landmarks were identified before (T1) and after (T2) treatment. The magnitudes of planned and actual movements of the incisors and molars were calculated. Results: Positive overbite was achieved in 94% patients, with a mean final overbite of 1.1 ± 0.8 mm. The mean change in overbite was 3.3 ± 1.4 mm. With clear aligners alone, 0.36 ± 0.58 mm of maxillary molar intrusion was achieved. Compared with the Class I group, the Class II group showed greater maxillary molar intrusion and MPA reduction. The Class III group showed greater mandibular incisor extrusion with no significant vertical skeletal changes. Conclusions: Clear aligners can be effective in controlling the vertical dimension and correcting mild to moderate anterior open bite in adult nonextraction cases. The treatment mechanism for Class III patients significantly differed from that for Class I and Class II patients. Maxillary incisor extrusion in patients with dental open bite and MPA reduction with mandibular incisor extrusion in patients with skeletal open bite are the most significant contributing factors for open bite closure.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2024 |
YJ, Choi; H, Suh; JJ, Park; JH, Park: Anterior open bite correction via molar intrusion: Diagnosis, advantages, and complications. In: J World Fed Orthod, vol. S2212-4438, iss. 23, 2024. (Type: Journal Article | Abstract | Links | BibTeX | Tags: anterior openbite, Molar intrusion, Temporary skeletal anchorage devices, Treatment planning, Vertical malocclusions)@article{Suh2023b, Anterior open bite can be effectively treated nonsurgically via molar intrusion. This technique, involving the intrusion of posterior teeth using temporary skeletal anchorage devices, prompts counterclockwise rotation of the mandible. This rotation not only corrects anterior open bite but also contributes to a decrease in anterior facial height, improvements in lip incompetency, and forward movement of the chin. For successful outcomes, temporary skeletal anchorage devices, installed on both the buccal and palatal sides, must deliver equivalent intrusion force to the maxillary teeth. Treatment planning should consider factors such as skeletal discrepancies, vertical excess, incisor exposure, and configuration of the occlusal plane. Clinicians are advised to closely monitor periodontal changes and consider overcorrection to ensure lasting stability and maintenance of incisal overlap post-treatment. |
2023 |
Suh, H; Garnett, B; Mahood, K; Boyd, R; Oh, H: Short-term stability of anterior open bite treatment with clear aligners in adults. In: Am J Orthod Dentofacial Orthop, vol. 164, iss. 6, pp. 774-782, 2023. (Type: Journal Article | Abstract | Links | BibTeX | Tags: anterior openbite, clear aligners, short-term stability)@article{Oh2023d, Introduction: This study aimed to examine the stability of anterior open bite (AOB) treatment with clear aligners. Methods: This retrospective cohort study included 52 adult AOB patients (aged >18 years; 15 males, 37 females) who underwent nonextraction clear aligner treatment and were at least 1 year posttreatment. Eleven cephalometric measurements were evaluated at pretreatment, end of active treatment, and at least 1-year posttreatment. Overbite change, the primary outcome variable, and other cephalometric changes during treatment and retention were calculated, and repeated measures analysis of variance were performed. Stepwise multiple regression was used to make a prediction equation for open bite relapse. Results: The mean retention period was 2.1 ± 1.1 years. The mean change in overbite during treatment was 3.3 ± 1.5 mm; 6% of patients presented relapse at least 1 year after treatment completion. The mean change of overbite (0.2 ± 0.5 mm) during the retention period was not statistically significant (P = 0.59). None of the 11 cephalometric measurements showed significant change during the retention period. The prediction model showed that only the coefficient for a tongue posture issue at the initial examination was statistically significant. Conclusions: AOB was successfully corrected in all 52 patients using only clear aligners with no additional adjunctive aids such as microimplants. When retained with maxillary and mandibular fixed retainers and maxillary and mandibular vacuum-formed retainers, there was no significant change in cephalometric measurements during the short-term retention period. |
2022 |
Suh, H; Garnett, B Shen; Mahood, K; Boyd, RL; Oh, H: Treatment of anterior open bites using non-extraction clear aligner therapy in adult patients. In: Korean J Orthod, vol. 52, iss. 5, pp. 383-384, 2022. (Type: Journal Article | Abstract | Links | BibTeX | Tags: aligner therapy, anterior openbite, clear aligners, non-extraction)@article{Oh2022e, Objective: The purpose of this study was to examine the effectiveness and mechanism of clear aligner therapy for the correction of anterior open bite in adult nonextraction cases. Methods: Sixty-nine adult patients with anterior open bite were enrolled and classified into Angle's Class I, II, and III groups. Fifty patients presented with skeletal open bite (mandibular plane angle [MPA] ≥ 38°), whereas 19 presented with dental open bite. Fifteen cephalometric landmarks were identified before (T1) and after (T2) treatment. The magnitudes of planned and actual movements of the incisors and molars were calculated. Results: Positive overbite was achieved in 94% patients, with a mean final overbite of 1.1 ± 0.8 mm. The mean change in overbite was 3.3 ± 1.4 mm. With clear aligners alone, 0.36 ± 0.58 mm of maxillary molar intrusion was achieved. Compared with the Class I group, the Class II group showed greater maxillary molar intrusion and MPA reduction. The Class III group showed greater mandibular incisor extrusion with no significant vertical skeletal changes. Conclusions: Clear aligners can be effective in controlling the vertical dimension and correcting mild to moderate anterior open bite in adult nonextraction cases. The treatment mechanism for Class III patients significantly differed from that for Class I and Class II patients. Maxillary incisor extrusion in patients with dental open bite and MPA reduction with mandibular incisor extrusion in patients with skeletal open bite are the most significant contributing factors for open bite closure. |
Phi, L; Albertson, B; Hatcher, D; Rathi, S; Park, J; Oh, H: Condylar degeneration in anterior open bite patients: A cone-beam computed tomography (CBCT) study.. In: Oral Surgery Oral Med Oral Path Oral Radiology , vol. 133, iss. 2, pp. 221-228, 2022. (Type: Journal Article | Abstract | Links | BibTeX | Tags: anterior openbite, CBCT, condylar degeneration, Cone-beam computed tomography)@article{Oh2022g, Objectives: The purpose of this study was to investigate the prevalence of condylar degeneration in patients with anterior open bites (AOB). Study design: Cone beam computed tomography (CBCT) scans of 194 patients with AOB (108 with skeletal open bites and 86 with dental open bites) and 100 patients serving as controls were included in this retrospective study. Two oral and maxillofacial radiologists categorized each of the 588 condyles as normal, degenerative-active, or degenerative-repair. The χ2 analysis with Bonferroni adjustment was used to evaluate the relationship of condylar status (normal vs degenerative) to anterior open bites. Results: Of the 103 degenerative condyles, there were 59 in the group with skeletal open bites, 14 in the group with dental open bites, and 30 in the control group. Condylar degeneration occurred twice as frequently in patients with skeletal open bites as it did in the control group (P < .0001). Conversely, a greater frequency of normal condyles was found in the group of patients with dental open bites (P = .0002). The group with skeletal open bites also showed a significantly higher frequency of bilateral degenerative condyles (P = .0001). The frequency of condylar degeneration did not differ significantly between female and male individuals. Conclusions: Degenerative condylar change was significantly more likely in patients with skeletal open bites and less likely in patients with dental open bites. |
2021 |
Bianchi, J; Goncalves, J Roberto; Ruellas, A Carlos De Oliveira; Bianchi, J Vierira Pastana; Ashman, LM; et al,: Radiographic interpretation using high-resolution Cbct to diagnose degenerative temporomandibular joint disease. In: PLOS ONE, vol. 16, no. 8, pp. e0255937, 2021. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, Cranial base, fixed appliances, Growth, hyperdivergent, Mandibular fixed retainer)@article{Bianchi2021b, The objective of this study was to use high-resolution cone-beam computed images (hr- CBCT) to diagnose degenerative joint disease in asymptomatic and symptomatic subjects using the Diagnostic Criteria for Temporomandibular Disorders DC/TMD imaging criteria. This observational study comprised of 92 subjects age-sex matched and divided into two groups: clinical degenerative joint disease (c-DJD, n = 46) and asymptomatic control group (n = 46). Clinical assessment of the DJD and high-resolution CBCT images (isotropic voxel size of 0.08mm) of the temporomandibular joints were performed for each participant. An American Board of Oral and Maxillofacial Radiology certified radiologist and a maxillofacial radiologist used the DC/TMD imaging criteria to evaluate the radiographic findings, followed by a consensus of the radiographic evaluation. The two radiologists presented a high agreement (Cohen's Kappa ranging from 0.80 to 0.87) for all radiographic findings (osteophyte, erosion, cysts, flattening, and sclerosis). Five patients from the c- DJD group did not present radiographic findings, being then classified as arthralgia. In the asymptomatic control group, 82.6% of the patients presented radiographic findings determinant of DJD and were then classified as osteoarthrosis or overdiagnosis. In conclusion, our results showed a high number of radiographic findings in the asymptomatic control group, and for this reason, we suggest that there is a need for additional imaging criteria to classify DJD properly in hr-CBCT images. |
Knigge, R; McNulty, K; Oh, H; Hardin, A; Leary, E; Duren, D; Valathan, M; Sherwood, R: Geometric morphometric analysis of growth patterns among facial types. . In: Am J Orthod Dentofacial Orthop, vol. 160, no. 3, pp. 430-441, 2021. (Type: Journal Article | Abstract | Links | BibTeX | Tags: Adolescents, anterior openbite, Cranial base, craniofacial, extraction, Mandibular fixed retainer, retrospective, vertical control)@article{Knigge2020, Extreme patterns of vertical facial divergence are of great importance to clinicians because of their association with dental malocclusion and functional problems of the orofacial complex. Understanding the growth patterns associated with vertical facial divergence is critical for clinicians to provide optimal treatment. This study evaluates and compares growth patterns from childhood to adulthood among 3 classifications of vertical facial divergence using longitudinal, lateral cephalograms from the Craniofacial Growth Consortium Study. |
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. |
2020 |
Sherwood, R; Oh, H; Valiathan, M; McNulty, K; Duren, D; Knigge, R; Hardin, A; Holzhauser, C; Middleton, K: Bayesian Approach to Longitudinal Craniofacial Growth: The Craniofacial Growth Consortium Study.. In: American Association of Orthodontists Foundation, 2020. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, Cranial base, Growth, hyperdivergent, Mandibular fixed retainer)@article{Sherwood2020, Early in the 20th century, a series of studies were initiated across North America to investigate and characterize childhood growth. The Craniofacial Growth Consortium Study (CGCS) combines craniofacial records from six of those growth studies (15,407 lateral cephalograms from 1,913 individuals; 956 females, 957 males, primarily European descent). Standard cephalometric points collected from the six studies in the CGCS allows direct comparison of craniofacial growth patterns across six North American locations. Three assessors collected all cephalometric points and the coordinates were averaged for each point. Twelve measures were calculated from the averaged coordinates. We implemented a multilevel double logistic equation to estimate growth trajectories fitting each trait separately by sex. Using Bayesian inference, we fit three models for each trait with different random effects structures to compare differences in growth patterns among studies. The models successfully identified important growth milestones (e.g., age at peak growth velocity, age at cessation of growth) for most traits. In a small number of cases, these milestones could not be determined due to truncated age ranges for some studies and slow, steady growth in some measurements. Results demonstrate great similarity among the six growth studies regarding craniofacial growth milestone estimates and the overall shape of the growth curve. These similarities suggest minor variation among studies resulting from differences in protocol, sample, or possible geographic variation. The analyses presented support combining the studies into the CGCS without substantial concerns of bias. The CGCS, therefore, provides an unparalleled opportunity to examine craniofacial growth from childhood into adulthood. |
Serge, B; Maxime, D; Bianchi, J; Antonio, R; Lucia, C; Marilia, Y; Joao, G; Erika, C; Fabiana, S; Beatriz, P; Juan, P; Kayvan, N; Jonathan, G; Reza, S: 3D Auto-Segmentation of Mandibular Condyles. In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), pp. 1270-1273, 2020. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, Peer Assessment Rating Index, Posttreatment, teaching)@article{Brosset2020, Temporomandibular joints (TMJ) like a hinge connect the jawbone to the skull. TMJ disorders could cause pain in the jaw joint and the muscles controlling jaw movement. However, the disease cannot be diagnosed until it becomes symptomatic. It has been shown that bone resorption at the condyle articular surface is already evident at initial diagnosis of TMJ Osteoarthritis (OA). Therefore, analyzing the bone structure will facilitate the disease diagnosis. The important step towards this analysis is the condyle segmentation. This article deals with a method to automatically segment the temporomandibular joint condyle out of cone beam CT (CBCT) scans. In the proposed method we denoise images and apply 3D active contour and morphological operations to segment the condyle. The experimental results show that the proposed method yields the Dice score of 0.9461 with the standards deviation of 0.0888 when it is applied on CBCT images of 95 patients. This segmentation will allow large datasets to be analyzed more efficiently towards data sciences and machine learning approaches for disease classification. |
2019 |
Oh, H; Knigge, R; Hardin, A; Sherwood, R; Duren, D; Valathan, M; Leary, E; McNulty, K: Predicting Adult Facial Type From Mandibular Landmark Data At Young Ages.. In: Orthod Craniofac Res, vol. 1, pp. 154-162, 2019. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, Cone-beam computed tomography, Cranial base, Mandibular remodeling)@article{Oh2019, To assess the potential of predicting adult facial types at different stages of mandibular development. |
Sam, A; Currie, K; Oh, H; Flores-Mir, C; Lagravere-Vich, M: Reliability of different 3D cephalometric landmarks in CBCT: A systematic review.. In: Angle Orthod, vol. 89, no. 2, pp. 317-332, 2019. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, Cone-beam computed tomography, Cranial base, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling)@article{Sam2019, Conventional two-dimensional (2D) cephalometric radiography is an integral part of orthodontic patient diagnosis and treatment planning. One must be mindful of its limitations as it indeed is a 2D representation of a vaster three-dimensional (3D) object. Issues with projection errors, landmark identification, and measurement inaccuracies impose significant limitations, which may now be overcome with the advent of cone-beam computed tomography (CBCT). A systematic review of the reliability of different 3D cephalometric landmarks in CBCT imaging was conducted. |
2017 |
Xu, Y; Oh, H; Lagravere-Vich, M: Malocclusion Class II-Division 1 skeletal and dental relationships measured by Cone-Beam Computed Tomography. . In: International Journal of Orthodontics, vol. 15, no. 3, pp. 365-387, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Growth, hyperdivergent, malocclusion severity, Mandibular fixed retainer, pressure tension, retrospective)@article{Xu2017, The purpose of this study was to locate traditionally-used landmarks in two-dimensional (2D) images and newly-suggested ones in three-dimensional (3D) images (cone-beam computer tomographies [CBCTs]) and determine possible relationships between them to categorize patients with Class II-1 malocclusion. |
Hwang, 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) |
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. |
2008 |
Xu, T-M; Korn, EL; Liu, Y; Oh, HS; Lee, KH; Baumrind, S: "Facial Attractiveness": Ranking of End-of-Treatment Facial Photographs by Chinese and U.S. Orthodontists.. In: American Journal of Orthodontics & Dentofacial Orthopedics, vol. 134, no. 1, pp. 74-84, 2008. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, clinical orthodontist, Cone-beam computed tomography, Cranial base, hyperdivergent, Mandibular fixed retainer, open bite, retrospective)@article{Xu2008, In this study, we assessed agreement and disagreement among pairs of Chinese and US orthodontists in the ranking for "facial attractiveness" of end-of-treatment photographs of growing Chinese and white orthodontic patients. |
2001 |
SK, Lee; YS, Kim; HS, Oh; KH, Yang; EC, Kim; JG, Chi: Prenatal development of the human mandible. . In: The Anatomical Record, vol. 263, no. 3, pp. 314-25, 2001. (Type: Journal Article | Abstract | Links | BibTeX | Tags: adult, anterior openbite, clear aligners, clinical orthodontist, Cone-beam computed tomography, craniofacial, Discrepency Index, hyperdivergent, Mandibular fixed retainer, Posttreatment, pressure tension)@article{Lee2001, In an effort to better understand the interrelationship of the growth and development pattern of the mandible and condyle, a sequential growth pattern of human mandibles in 38 embryos and 111 fetuses were examined by serial histological sections and soft X-ray views. The basic growth pattern of the mandibular body and condyle appeared in week 7 of fertilization. Histologically, the embryonal mandible originated from primary intramembranous ossification in the fibrous mesenchymal tissue around the Meckel cartilage. From this initial ossification, the ramifying trabecular bones developed forward, backward and upward, to form the symphysis, mandibular body, and coronoid process, respectively. We named this initial ossification site of embryonal mandible as the mandibular primary growth center (MdPGC). During week 8 of fertilization, the trabecular bone of the mandibular body grew rapidly to form muscular attachments to the masseter, temporalis, and pterygoid muscles. The mandible was then rapidly separated from the Meckel cartilage and formed a condyle blastema at the posterior end of linear mandibular trabeculae. The condyle blastema, attached to the upper part of pterygoid muscle, grew backward and upward and concurrent endochondral ossification resulted in the formation of the condyle. From week 14 of fertilization, the growth of conical structure of condyle became apparent on histological and radiological examinations. The mandibular body showed a conspicuous radiating trabecular growth pattern centered at the MdPGC, located around the apical area of deciduous first molar. The condyle growth showed characteristic conical structure and abundant hematopoietic tissue in the marrow. The growth of the proximal end of condyle was also approximated to the MdPGC on radiograms. Taken together, we hypothesized that the MdPGC has an important morphogenetic affect for the development of the human mandible, providing a growth center for the trabecular bone of mandibular body and also indicating the initial growth of endochondral ossification of the condyle. |
0000 |
Garnett, Bella Shen; Mahood, Kimberly; Nguyen, Mai; Al-Khateeb, Aliaa; Liu, Siqi; Boyd, Robert; Oh, Heesoo: Cephalometric comparison of anterior openbite tx using clear aligners and fixed appliances. In: Angle Orthodontist, Forthcoming. (Type: Journal Article | Abstract | Links | BibTeX | Tags: adult, anterior openbite, clear aligners, fixed appliances, hyperdivergent, open bite, vertical control)@article{Garnett, Objectives: To compare fixed appliances and clear aligner therapy in correcting anterior open biteand in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns. Materials and Methods: In this retrospective study, two treatment groups of adult (_18 years old)hyperdivergent patients (mandibular plane angles of _388) with anterior open bites were included:17 fixed appliance patients and 36 clear aligner patients. Thirteen cephalometric measurementsrepresenting the vertical dimension were reported for each group. A two-sample t-test was used toassess differences in changes in mandibular plane angle and overbite between the two treatmentgroups. Results: There were no statistical differences found in the magnitude of overbite correction and thechanges in any of the cephalometric measurements for vertical control. The clear aligner groupshowed a slightly greater amount of lower incisor extrusion (P . .009). The main mechanism ofopen bite correction was similar between the two treatment groups and was accomplished throughretroclination of the upper and lower incisors while maintaining the vertical position of the upper andlower molars. Conclusions: Cephalometric comparison of anterior open bite correction and changes in themandibular plane angle associated with use of clear aligners and fixed appliances did notdemonstrate statistically significant differences in adult hyperdivergent patients. (Angle Orthod.0000;00:000–000.) |
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. |
Suh, H; Garnett, B Shen; Mahood, K; Mahjoub, N; Boyd, RL; Oh, H: Treatment of anterior open bites using non-extraction clear aligner therapy in adult patients. In: The Korean Journal of Orthodontics , vol. 52, iss. 3, 0000. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, aligner, aligner therapy, anterior openbite, non-extraction)@article{Oh2022c, Objective: The purpose of this study was to examine the effectiveness and mechanism of clear aligner therapy for the correction of anterior open bite in adult nonextraction cases. Methods: Sixty-nine adult patients with anterior open bite were enrolled and classified into Angle's Class I, II, and III groups. Fifty patients presented with skeletal open bite (mandibular plane angle [MPA] ≥ 38°), whereas 19 presented with dental open bite. Fifteen cephalometric landmarks were identified before (T1) and after (T2) treatment. The magnitudes of planned and actual movements of the incisors and molars were calculated. Results: Positive overbite was achieved in 94% patients, with a mean final overbite of 1.1 ± 0.8 mm. The mean change in overbite was 3.3 ± 1.4 mm. With clear aligners alone, 0.36 ± 0.58 mm of maxillary molar intrusion was achieved. Compared with the Class I group, the Class II group showed greater maxillary molar intrusion and MPA reduction. The Class III group showed greater mandibular incisor extrusion with no significant vertical skeletal changes. Conclusions: Clear aligners can be effective in controlling the vertical dimension and correcting mild to moderate anterior open bite in adult nonextraction cases. The treatment mechanism for Class III patients significantly differed from that for Class I and Class II patients. Maxillary incisor extrusion in patients with dental open bite and MPA reduction with mandibular incisor extrusion in patients with skeletal open bite are the most significant contributing factors for open bite closure. |