Publications
2021
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}
}
2020
Serge, B; Maxime, D; Bianchi, J; Antonio, R; Lucia, C; Marilia, Y; Joao, G; Erika, C; Fabiana, S; Beatriz, P; Juan, P; Kayvan, N; Jonathan, G; Reza, S
3D Auto-Segmentation of Mandibular Condyles Journal Article
In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), pp. 1270-1273, 2020.
Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, Peer Assessment Rating Index, Posttreatment, teaching
@article{Brosset2020,
title = {3D Auto-Segmentation of Mandibular Condyles},
author = {B Serge and D Maxime and J Bianchi and R Antonio and C Lucia and Y Marilia and G Joao and C Erika and S Fabiana and P Beatriz and P Juan and N Kayvan and G Jonathan and S Reza },
url = {https://pubmed.ncbi.nlm.nih.gov/33018219/},
doi = {10.1109/EMBC44109.2020.9175692},
year = {2020},
date = {2020-07-00},
urldate = {2020-07-00},
journal = {2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)},
pages = {1270-1273},
abstract = {Temporomandibular joints (TMJ) like a hinge connect the jawbone to the skull. TMJ disorders could cause pain in the jaw joint and the muscles controlling jaw movement. However, the disease cannot be diagnosed until it becomes symptomatic. It has been shown that bone resorption at the condyle articular surface is already evident at initial diagnosis of TMJ Osteoarthritis (OA). Therefore, analyzing the bone structure will facilitate the disease diagnosis. The important step towards this analysis is the condyle segmentation. This article deals with a method to automatically segment the temporomandibular joint condyle out of cone beam CT (CBCT) scans. In the proposed method we denoise images and apply 3D active contour and morphological operations to segment the condyle. The experimental results show that the proposed method yields the Dice score of 0.9461 with the standards deviation of 0.0888 when it is applied on CBCT images of 95 patients. This segmentation will allow large datasets to be analyzed more efficiently towards data sciences and machine learning approaches for disease classification.},
keywords = {AAOF, Adolescents, anterior openbite, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, Peer Assessment Rating Index, Posttreatment, teaching},
pubstate = {published},
tppubtype = {article}
}
2019
J, Park; Baumrind, S; S, Curry; S, Carlson; Oh, H
Reliability of 3D dental and skeletal landmarks on CBCT images. Journal Article
In: Angle Orthod, vol. 89, no. 5, pp. 758-767, 2019.
Abstract | Links | BibTeX | Tags: AAOF, Cranial base, Discrepency Index, extraction, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, Peer Assessment Rating Index
@article{Park2019,
title = {Reliability of 3D dental and skeletal landmarks on CBCT images.},
author = {Park J and S Baumrind and Curry S and Carlson S and H Oh},
url = {https://pubmed.ncbi.nlm.nih.gov/30883187/},
doi = {10.2319/082018-612.1},
year = {2019},
date = {2019-09-00},
journal = {Angle Orthod},
volume = {89},
number = {5},
pages = {758-767},
abstract = {To quantify reliability of three-dimensional skeletal landmarks and a comprehensive set of dental landmarks in cone-beam computed tomography (CBCT) and to determine the shapes of envelope of error.},
keywords = {AAOF, Cranial base, Discrepency Index, extraction, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, Peer Assessment Rating Index},
pubstate = {published},
tppubtype = {article}
}
Garnett, B; Mahod, K; Nguyen, M; Al-Khateeb, A; Liu, S; Boyd, R; Oh, H
Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances. Journal Article
In: Angle Orthodontist, vol. 89, no. 1, pp. 3-9, 2019.
Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, fixed appliances, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, mapping, open bite, Peer Assessment Rating Index, Posttreatment, research, x-ray
@article{Garnett2019,
title = {Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances.},
author = {B Garnett and K Mahod and M Nguyen and A Al-Khateeb and S Liu and R Boyd and H Oh},
url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8137127/},
doi = {10.2319/010418-4.1},
year = {2019},
date = {2019-01-00},
journal = {Angle Orthodontist},
volume = {89},
number = {1},
pages = {3-9},
abstract = {To compare fixed appliances and clear aligner therapy in correcting anterior open bite and in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns.},
keywords = {AAOF, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, fixed appliances, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, mapping, open bite, Peer Assessment Rating Index, Posttreatment, research, x-ray},
pubstate = {published},
tppubtype = {article}
}
2017
Currie, K; Sawchuk, D; Saltaji, H; Oh, H; Flores-Mir, C; Lagravere-Vich, M
Posterior cranial base natural growth and development: A systematic review. Journal Article
In: Angle Orthodontist, vol. 87, no. 6, pp. 897-910, 2017.
Abstract | Links | BibTeX | Tags: AAOF, adult, Cranial base, extraction, fixed appliances, Growth, mandibular asymmetry, Mandibular fixed retainer, Posttreatment, pressure tension, research, retrospective, vertical control, x-ray
@article{Currie2017b,
title = {Posterior cranial base natural growth and development: A systematic review. },
author = {K Currie and D Sawchuk and H Saltaji and H Oh and C Flores-Mir and M Lagravere-Vich},
url = {https://pubmed.ncbi.nlm.nih.gov/28737426/},
doi = {10.2319/032717-218.1},
year = {2017},
date = {2017-11-00},
journal = {Angle Orthodontist},
volume = {87},
number = {6},
pages = {897-910},
abstract = {To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba).},
keywords = {AAOF, adult, Cranial base, extraction, fixed appliances, Growth, mandibular asymmetry, Mandibular fixed retainer, Posttreatment, pressure tension, research, retrospective, vertical control, x-ray},
pubstate = {published},
tppubtype = {article}
}
Lui, S; Oh, H; Chambers, D; Weng, X; Chen, Q; Baumrind, S; Xu, T
In: Orthodontics and Craniofacial Research, vol. 20, no. 3, pp. 140-145, 2017.
Abstract | Links | BibTeX | Tags: AAOF, extraction, fixed appliances, hyperdivergent, malocclusion severity, Mandibular fixed retainer, Mandibular remodeling, Posttreatment, retrospective, technique, x-ray
@article{Liu2017b,
title = {Validity and reliability of the ABO Discrepancy Index and PAR Index (Peer Assessment Rating) for evaluating malocclusion severity among Chinese orthodontists.},
author = {S Lui and H Oh and D Chambers and X Weng and Q Chen and S Baumrind and T Xu},
url = {https://pubmed.ncbi.nlm.nih.gov/28670875/},
doi = {10.1111/ocr.12195},
year = {2017},
date = {2017-08-00},
journal = {Orthodontics and Craniofacial Research},
volume = {20},
number = {3},
pages = {140-145},
abstract = {To assess the validity of the American Board of Orthodontics Discrepancy Index (ABO-DI) and Peer Assessment Rating (PAR) Index in evaluating malocclusion severity in Chinese orthodontic patients.},
keywords = {AAOF, extraction, fixed appliances, hyperdivergent, malocclusion severity, Mandibular fixed retainer, Mandibular remodeling, Posttreatment, retrospective, technique, x-ray},
pubstate = {published},
tppubtype = {article}
}
1998
Baumrind, Sheldon
Adult orthodontic therapy—extraction versus non extraction Journal Article
In: Clinical Orthodontics and Research , vol. 1, pp. 130-141, 1998.
Abstract | Links | BibTeX | Tags: extraction, non extraction, orthondtics
@article{Baumrind1998,
title = {Adult orthodontic therapy—extraction versus non extraction},
author = {Sheldon Baumrind},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/12/Adult-orthodontic-therapy-extraction-versus-non-extraction.pdf},
year = {1998},
date = {1998-08-10},
journal = {Clinical Orthodontics and Research },
volume = {1},
pages = {130-141},
abstract = {This study addresses the problem of randomization of subjects with respect to an irreversible aspect of treatment strategy, namely, the extraction of teeth. The investigation includes both prospective and retrospective components. The data presented focus on clinician decision-making. Of the 1321 potential subjects for whom records were taken, 250 met the inclusion criteria. Of these subjects, 82 declined to participate and 20 were dropped because of difficulty in obtaining five independent evaluations of their records within a reasonable time frame. Thus, the final sample contained 148 subjects. Approximately one-third of the subjects in the sample are adult, somewhat more than half are female, and Class I malocclusions outnumber Class II malocclusions by a count of 95 to 53. Patterns of agreement and disagreement among five clinicians include: a) agreement/disagreement on the primary decision whether or not to extract: the data reveal a strong tendency towards consensus among the clinicians; b) agreement/disagreement on extraction pattern in patients in whom the clinician believes that extraction is indicated: the clinicians tended strongly to agree on extraction pattern; c) agreement/disagreement on the need for adjunctive orthognathic surgery: decisions favoring surgery were more common and more 'definite' than 'probable' in the adult cohort than in the adolescent cohort but this tendency was not as strong as had been anticipated; d) agreement/disagreement concerning Angle classification: disagreements were more common than had been anticipated; and e) differences among the individual clinicians as to their ratios of extraction/non-extraction decisions: overall, clinicians opted for extraction less frequently in the adolescent cohort than in the adult cohort (55 vs. 66%). Because the data are drawn from actual clinical experience, the conclusions involve a number of assumptions and their generalizability should be evaluated.},
keywords = {extraction, non extraction, orthondtics},
pubstate = {published},
tppubtype = {article}
}
1987
Curry, Sean; Baumrind, Sheldon; Anderson, J. M.
A technique for anatomic feature extraction and tracking on sequential digital X-ray images Journal Article
In: Photogrammetria, vol. 42, pp. 126-135, 1987.
Abstract | Links | BibTeX | Tags: extraction, technique, tracking, x-ray
@article{Curry1987,
title = {A technique for anatomic feature extraction and tracking on sequential digital X-ray images},
author = {Sean Curry and Sheldon Baumrind and J.M. Anderson},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/12/A-Technique-for-Anatomic-Feature-Extraction-and-Tracking-on-Sequential-Digital-X-Ray-Images.pdf},
year = {1987},
date = {1987-08-03},
journal = {Photogrammetria},
volume = {42},
pages = {126-135},
abstract = {The Craniofacial Research Instrumentation Laboratory at the University of California, San Francisco, has been developing systems for the acquisition and display of biostereometric data.
Stereo photographs and X-ray images of the head are used to analyze growth and treatment effects during orthodontic treatment and orthognathic sucgery. Recent efforts have been directed towards automating anatomic feature location and tracking on series of time-separated cranial X-rays. Two tests were performed to evaluate the potential accuracies that could be achieved in feature tracking. In both tests, a series of cranial X-rays was converted to digital images using an array camera [Charge Injection Device (CID)] connected to a real-time video digitizer module or "frame grabber" installed in a microcomputer. The first test series consisted of a single X-ray image which was translated and rotated three times. The second series of images consisted of three actual cranial X-rays of a single subject, acquired over a period of approximately two years. A number of anatomic features were manually selected on the first image of each series. The
features were automatically tracked on subsequent digital images, and their locations compared to those derived from manual digitizing of the original film images.},
keywords = {extraction, technique, tracking, x-ray},
pubstate = {published},
tppubtype = {article}
}
Stereo photographs and X-ray images of the head are used to analyze growth and treatment effects during orthodontic treatment and orthognathic sucgery. Recent efforts have been directed towards automating anatomic feature location and tracking on series of time-separated cranial X-rays. Two tests were performed to evaluate the potential accuracies that could be achieved in feature tracking. In both tests, a series of cranial X-rays was converted to digital images using an array camera [Charge Injection Device (CID)] connected to a real-time video digitizer module or "frame grabber" installed in a microcomputer. The first test series consisted of a single X-ray image which was translated and rotated three times. The second series of images consisted of three actual cranial X-rays of a single subject, acquired over a period of approximately two years. A number of anatomic features were manually selected on the first image of each series. The
features were automatically tracked on subsequent digital images, and their locations compared to those derived from manual digitizing of the original film images.
0000
Oh, H; J, Park; Lagravere-Vich, M
Comparison of traditional RPE with two types of micro-implant assisted RPE: CBCT study. Journal Article
In: Semin Orthod, vol. 25, no. 1, pp. 60-68, 0000.
Abstract | Links | BibTeX | Tags: AAOF, adult, anterior openbite, Cranial base, extraction, Growth, Posttreatment, pressure tension, retrospective, technique, x-ray
@article{Oh2019b,
title = {Comparison of traditional RPE with two types of micro-implant assisted RPE: CBCT study.},
author = {H Oh and Park J and M Lagravere-Vich },
url = {https://www.sciencedirect.com/science/article/pii/S1073874619300076},
doi = {10.1053/j.sodo.2019.02.007},
journal = {Semin Orthod},
volume = {25},
number = {1},
pages = {60-68},
abstract = {Recently, various types of the Micro-implant Assisted RPE (MARPE) were introduced to obtain greater skeletal expansion and to minimize dental effects. In the present study, we evaluated skeletal and dental effects immediately after the completion of expansion using three different types of expanders— a traditional tooth-anchored maxillary expander (TAME) and two different types of MARPE, bone-anchored maxillary expander (BAME) and tooth-bone-anchored expander (MSE) using CBCT in adolescents. Overall, the MSE group showed much greater skeletal changes than the TAME and BAME groups, especially, at the nasal floor, maxillary base, and palatal suture. About 72–78% of suture opening was at PNS, which indicates slightly more opening anteriorly than posteriorly; however, it was relatively parallel in nature than anticipated. In all three groups, the greatest transverse changes with expansion occurred at the molar crowns and the 2nd greatest changes at the palatal suture opening at ANS. It is suggested that MSE can be a great alternative method in correcting maxillary skeletal transverse deficiency.},
keywords = {AAOF, adult, anterior openbite, Cranial base, extraction, Growth, Posttreatment, pressure tension, retrospective, technique, x-ray},
pubstate = {published},
tppubtype = {article}
}
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}
}
Serge, B; Maxime, D; Bianchi, J; Antonio, R; Lucia, C; Marilia, Y; Joao, G; Erika, C; Fabiana, S; Beatriz, P; Juan, P; Kayvan, N; Jonathan, G; Reza, S
3D Auto-Segmentation of Mandibular Condyles Journal Article
In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), pp. 1270-1273, 2020.
@article{Brosset2020,
title = {3D Auto-Segmentation of Mandibular Condyles},
author = {B Serge and D Maxime and J Bianchi and R Antonio and C Lucia and Y Marilia and G Joao and C Erika and S Fabiana and P Beatriz and P Juan and N Kayvan and G Jonathan and S Reza },
url = {https://pubmed.ncbi.nlm.nih.gov/33018219/},
doi = {10.1109/EMBC44109.2020.9175692},
year = {2020},
date = {2020-07-00},
urldate = {2020-07-00},
journal = {2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)},
pages = {1270-1273},
abstract = {Temporomandibular joints (TMJ) like a hinge connect the jawbone to the skull. TMJ disorders could cause pain in the jaw joint and the muscles controlling jaw movement. However, the disease cannot be diagnosed until it becomes symptomatic. It has been shown that bone resorption at the condyle articular surface is already evident at initial diagnosis of TMJ Osteoarthritis (OA). Therefore, analyzing the bone structure will facilitate the disease diagnosis. The important step towards this analysis is the condyle segmentation. This article deals with a method to automatically segment the temporomandibular joint condyle out of cone beam CT (CBCT) scans. In the proposed method we denoise images and apply 3D active contour and morphological operations to segment the condyle. The experimental results show that the proposed method yields the Dice score of 0.9461 with the standards deviation of 0.0888 when it is applied on CBCT images of 95 patients. This segmentation will allow large datasets to be analyzed more efficiently towards data sciences and machine learning approaches for disease classification.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
J, Park; Baumrind, S; S, Curry; S, Carlson; Oh, H
Reliability of 3D dental and skeletal landmarks on CBCT images. Journal Article
In: Angle Orthod, vol. 89, no. 5, pp. 758-767, 2019.
@article{Park2019,
title = {Reliability of 3D dental and skeletal landmarks on CBCT images.},
author = {Park J and S Baumrind and Curry S and Carlson S and H Oh},
url = {https://pubmed.ncbi.nlm.nih.gov/30883187/},
doi = {10.2319/082018-612.1},
year = {2019},
date = {2019-09-00},
journal = {Angle Orthod},
volume = {89},
number = {5},
pages = {758-767},
abstract = {To quantify reliability of three-dimensional skeletal landmarks and a comprehensive set of dental landmarks in cone-beam computed tomography (CBCT) and to determine the shapes of envelope of error.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Garnett, B; Mahod, K; Nguyen, M; Al-Khateeb, A; Liu, S; Boyd, R; Oh, H
Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances. Journal Article
In: Angle Orthodontist, vol. 89, no. 1, pp. 3-9, 2019.
@article{Garnett2019,
title = {Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances.},
author = {B Garnett and K Mahod and M Nguyen and A Al-Khateeb and S Liu and R Boyd and H Oh},
url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8137127/},
doi = {10.2319/010418-4.1},
year = {2019},
date = {2019-01-00},
journal = {Angle Orthodontist},
volume = {89},
number = {1},
pages = {3-9},
abstract = {To compare fixed appliances and clear aligner therapy in correcting anterior open bite and in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Currie, K; Sawchuk, D; Saltaji, H; Oh, H; Flores-Mir, C; Lagravere-Vich, M
Posterior cranial base natural growth and development: A systematic review. Journal Article
In: Angle Orthodontist, vol. 87, no. 6, pp. 897-910, 2017.
@article{Currie2017b,
title = {Posterior cranial base natural growth and development: A systematic review. },
author = {K Currie and D Sawchuk and H Saltaji and H Oh and C Flores-Mir and M Lagravere-Vich},
url = {https://pubmed.ncbi.nlm.nih.gov/28737426/},
doi = {10.2319/032717-218.1},
year = {2017},
date = {2017-11-00},
journal = {Angle Orthodontist},
volume = {87},
number = {6},
pages = {897-910},
abstract = {To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba).},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Lui, S; Oh, H; Chambers, D; Weng, X; Chen, Q; Baumrind, S; Xu, T
Validity and reliability of the ABO Discrepancy Index and PAR Index (Peer Assessment Rating) for evaluating malocclusion severity among Chinese orthodontists. Journal Article
In: Orthodontics and Craniofacial Research, vol. 20, no. 3, pp. 140-145, 2017.
@article{Liu2017b,
title = {Validity and reliability of the ABO Discrepancy Index and PAR Index (Peer Assessment Rating) for evaluating malocclusion severity among Chinese orthodontists.},
author = {S Lui and H Oh and D Chambers and X Weng and Q Chen and S Baumrind and T Xu},
url = {https://pubmed.ncbi.nlm.nih.gov/28670875/},
doi = {10.1111/ocr.12195},
year = {2017},
date = {2017-08-00},
journal = {Orthodontics and Craniofacial Research},
volume = {20},
number = {3},
pages = {140-145},
abstract = {To assess the validity of the American Board of Orthodontics Discrepancy Index (ABO-DI) and Peer Assessment Rating (PAR) Index in evaluating malocclusion severity in Chinese orthodontic patients.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Baumrind, Sheldon
Adult orthodontic therapy—extraction versus non extraction Journal Article
In: Clinical Orthodontics and Research , vol. 1, pp. 130-141, 1998.
@article{Baumrind1998,
title = {Adult orthodontic therapy—extraction versus non extraction},
author = {Sheldon Baumrind},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/12/Adult-orthodontic-therapy-extraction-versus-non-extraction.pdf},
year = {1998},
date = {1998-08-10},
journal = {Clinical Orthodontics and Research },
volume = {1},
pages = {130-141},
abstract = {This study addresses the problem of randomization of subjects with respect to an irreversible aspect of treatment strategy, namely, the extraction of teeth. The investigation includes both prospective and retrospective components. The data presented focus on clinician decision-making. Of the 1321 potential subjects for whom records were taken, 250 met the inclusion criteria. Of these subjects, 82 declined to participate and 20 were dropped because of difficulty in obtaining five independent evaluations of their records within a reasonable time frame. Thus, the final sample contained 148 subjects. Approximately one-third of the subjects in the sample are adult, somewhat more than half are female, and Class I malocclusions outnumber Class II malocclusions by a count of 95 to 53. Patterns of agreement and disagreement among five clinicians include: a) agreement/disagreement on the primary decision whether or not to extract: the data reveal a strong tendency towards consensus among the clinicians; b) agreement/disagreement on extraction pattern in patients in whom the clinician believes that extraction is indicated: the clinicians tended strongly to agree on extraction pattern; c) agreement/disagreement on the need for adjunctive orthognathic surgery: decisions favoring surgery were more common and more 'definite' than 'probable' in the adult cohort than in the adolescent cohort but this tendency was not as strong as had been anticipated; d) agreement/disagreement concerning Angle classification: disagreements were more common than had been anticipated; and e) differences among the individual clinicians as to their ratios of extraction/non-extraction decisions: overall, clinicians opted for extraction less frequently in the adolescent cohort than in the adult cohort (55 vs. 66%). Because the data are drawn from actual clinical experience, the conclusions involve a number of assumptions and their generalizability should be evaluated.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Curry, Sean; Baumrind, Sheldon; Anderson, J. M.
A technique for anatomic feature extraction and tracking on sequential digital X-ray images Journal Article
In: Photogrammetria, vol. 42, pp. 126-135, 1987.
@article{Curry1987,
title = {A technique for anatomic feature extraction and tracking on sequential digital X-ray images},
author = {Sean Curry and Sheldon Baumrind and J.M. Anderson},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/12/A-Technique-for-Anatomic-Feature-Extraction-and-Tracking-on-Sequential-Digital-X-Ray-Images.pdf},
year = {1987},
date = {1987-08-03},
journal = {Photogrammetria},
volume = {42},
pages = {126-135},
abstract = {The Craniofacial Research Instrumentation Laboratory at the University of California, San Francisco, has been developing systems for the acquisition and display of biostereometric data.
Stereo photographs and X-ray images of the head are used to analyze growth and treatment effects during orthodontic treatment and orthognathic sucgery. Recent efforts have been directed towards automating anatomic feature location and tracking on series of time-separated cranial X-rays. Two tests were performed to evaluate the potential accuracies that could be achieved in feature tracking. In both tests, a series of cranial X-rays was converted to digital images using an array camera [Charge Injection Device (CID)] connected to a real-time video digitizer module or "frame grabber" installed in a microcomputer. The first test series consisted of a single X-ray image which was translated and rotated three times. The second series of images consisted of three actual cranial X-rays of a single subject, acquired over a period of approximately two years. A number of anatomic features were manually selected on the first image of each series. The
features were automatically tracked on subsequent digital images, and their locations compared to those derived from manual digitizing of the original film images.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Stereo photographs and X-ray images of the head are used to analyze growth and treatment effects during orthodontic treatment and orthognathic sucgery. Recent efforts have been directed towards automating anatomic feature location and tracking on series of time-separated cranial X-rays. Two tests were performed to evaluate the potential accuracies that could be achieved in feature tracking. In both tests, a series of cranial X-rays was converted to digital images using an array camera [Charge Injection Device (CID)] connected to a real-time video digitizer module or "frame grabber" installed in a microcomputer. The first test series consisted of a single X-ray image which was translated and rotated three times. The second series of images consisted of three actual cranial X-rays of a single subject, acquired over a period of approximately two years. A number of anatomic features were manually selected on the first image of each series. The
features were automatically tracked on subsequent digital images, and their locations compared to those derived from manual digitizing of the original film images.
Oh, H; J, Park; Lagravere-Vich, M
Comparison of traditional RPE with two types of micro-implant assisted RPE: CBCT study. Journal Article
In: Semin Orthod, vol. 25, no. 1, pp. 60-68, 0000.
@article{Oh2019b,
title = {Comparison of traditional RPE with two types of micro-implant assisted RPE: CBCT study.},
author = {H Oh and Park J and M Lagravere-Vich },
url = {https://www.sciencedirect.com/science/article/pii/S1073874619300076},
doi = {10.1053/j.sodo.2019.02.007},
journal = {Semin Orthod},
volume = {25},
number = {1},
pages = {60-68},
abstract = {Recently, various types of the Micro-implant Assisted RPE (MARPE) were introduced to obtain greater skeletal expansion and to minimize dental effects. In the present study, we evaluated skeletal and dental effects immediately after the completion of expansion using three different types of expanders— a traditional tooth-anchored maxillary expander (TAME) and two different types of MARPE, bone-anchored maxillary expander (BAME) and tooth-bone-anchored expander (MSE) using CBCT in adolescents. Overall, the MSE group showed much greater skeletal changes than the TAME and BAME groups, especially, at the nasal floor, maxillary base, and palatal suture. About 72–78% of suture opening was at PNS, which indicates slightly more opening anteriorly than posteriorly; however, it was relatively parallel in nature than anticipated. In all three groups, the greatest transverse changes with expansion occurred at the molar crowns and the 2nd greatest changes at the palatal suture opening at ANS. It is suggested that MSE can be a great alternative method in correcting maxillary skeletal transverse deficiency.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2021 |
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. |
2020 |
Serge, B; Maxime, D; Bianchi, J; Antonio, R; Lucia, C; Marilia, Y; Joao, G; Erika, C; Fabiana, S; Beatriz, P; Juan, P; Kayvan, N; Jonathan, G; Reza, S: 3D Auto-Segmentation of Mandibular Condyles. In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), pp. 1270-1273, 2020. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Adolescents, anterior openbite, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, orthodontic, Peer Assessment Rating Index, Posttreatment, teaching)@article{Brosset2020, Temporomandibular joints (TMJ) like a hinge connect the jawbone to the skull. TMJ disorders could cause pain in the jaw joint and the muscles controlling jaw movement. However, the disease cannot be diagnosed until it becomes symptomatic. It has been shown that bone resorption at the condyle articular surface is already evident at initial diagnosis of TMJ Osteoarthritis (OA). Therefore, analyzing the bone structure will facilitate the disease diagnosis. The important step towards this analysis is the condyle segmentation. This article deals with a method to automatically segment the temporomandibular joint condyle out of cone beam CT (CBCT) scans. In the proposed method we denoise images and apply 3D active contour and morphological operations to segment the condyle. The experimental results show that the proposed method yields the Dice score of 0.9461 with the standards deviation of 0.0888 when it is applied on CBCT images of 95 patients. This segmentation will allow large datasets to be analyzed more efficiently towards data sciences and machine learning approaches for disease classification. |
2019 |
J, Park; Baumrind, S; S, Curry; S, Carlson; Oh, H: Reliability of 3D dental and skeletal landmarks on CBCT images.. In: Angle Orthod, vol. 89, no. 5, pp. 758-767, 2019. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Cranial base, Discrepency Index, extraction, hyperdivergent, Mandibular fixed retainer, Mandibular remodeling, Peer Assessment Rating Index)@article{Park2019, To quantify reliability of three-dimensional skeletal landmarks and a comprehensive set of dental landmarks in cone-beam computed tomography (CBCT) and to determine the shapes of envelope of error. |
Garnett, B; Mahod, K; Nguyen, M; Al-Khateeb, A; Liu, S; Boyd, R; Oh, H: Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances.. In: Angle Orthodontist, vol. 89, no. 1, pp. 3-9, 2019. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, Cone-beam computed tomography, Cranial base, craniofacial, Discrepency Index, extraction, fixed appliances, hyperdivergent, mandibular asymmetry, Mandibular fixed retainer, Mandibular remodeling, mapping, open bite, Peer Assessment Rating Index, Posttreatment, research, x-ray)@article{Garnett2019, To compare fixed appliances and clear aligner therapy in correcting anterior open bite and in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns. |
2017 |
Currie, K; Sawchuk, D; Saltaji, H; Oh, H; Flores-Mir, C; Lagravere-Vich, M: Posterior cranial base natural growth and development: A systematic review. . In: Angle Orthodontist, vol. 87, no. 6, pp. 897-910, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, adult, Cranial base, extraction, fixed appliances, Growth, mandibular asymmetry, Mandibular fixed retainer, Posttreatment, pressure tension, research, retrospective, vertical control, x-ray)@article{Currie2017b, To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba). |
Lui, S; Oh, H; Chambers, D; Weng, X; Chen, Q; Baumrind, S; Xu, T: Validity and reliability of the ABO Discrepancy Index and PAR Index (Peer Assessment Rating) for evaluating malocclusion severity among Chinese orthodontists.. In: Orthodontics and Craniofacial Research, vol. 20, no. 3, pp. 140-145, 2017. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, extraction, fixed appliances, hyperdivergent, malocclusion severity, Mandibular fixed retainer, Mandibular remodeling, Posttreatment, retrospective, technique, x-ray)@article{Liu2017b, To assess the validity of the American Board of Orthodontics Discrepancy Index (ABO-DI) and Peer Assessment Rating (PAR) Index in evaluating malocclusion severity in Chinese orthodontic patients. |
1998 |
Baumrind, Sheldon: Adult orthodontic therapy—extraction versus non extraction. In: Clinical Orthodontics and Research , vol. 1, pp. 130-141, 1998. (Type: Journal Article | Abstract | Links | BibTeX | Tags: extraction, non extraction, orthondtics)@article{Baumrind1998, This study addresses the problem of randomization of subjects with respect to an irreversible aspect of treatment strategy, namely, the extraction of teeth. The investigation includes both prospective and retrospective components. The data presented focus on clinician decision-making. Of the 1321 potential subjects for whom records were taken, 250 met the inclusion criteria. Of these subjects, 82 declined to participate and 20 were dropped because of difficulty in obtaining five independent evaluations of their records within a reasonable time frame. Thus, the final sample contained 148 subjects. Approximately one-third of the subjects in the sample are adult, somewhat more than half are female, and Class I malocclusions outnumber Class II malocclusions by a count of 95 to 53. Patterns of agreement and disagreement among five clinicians include: a) agreement/disagreement on the primary decision whether or not to extract: the data reveal a strong tendency towards consensus among the clinicians; b) agreement/disagreement on extraction pattern in patients in whom the clinician believes that extraction is indicated: the clinicians tended strongly to agree on extraction pattern; c) agreement/disagreement on the need for adjunctive orthognathic surgery: decisions favoring surgery were more common and more 'definite' than 'probable' in the adult cohort than in the adolescent cohort but this tendency was not as strong as had been anticipated; d) agreement/disagreement concerning Angle classification: disagreements were more common than had been anticipated; and e) differences among the individual clinicians as to their ratios of extraction/non-extraction decisions: overall, clinicians opted for extraction less frequently in the adolescent cohort than in the adult cohort (55 vs. 66%). Because the data are drawn from actual clinical experience, the conclusions involve a number of assumptions and their generalizability should be evaluated. |
1987 |
Curry, Sean; Baumrind, Sheldon; Anderson, J. M.: A technique for anatomic feature extraction and tracking on sequential digital X-ray images. In: Photogrammetria, vol. 42, pp. 126-135, 1987. (Type: Journal Article | Abstract | Links | BibTeX | Tags: extraction, technique, tracking, x-ray)@article{Curry1987, The Craniofacial Research Instrumentation Laboratory at the University of California, San Francisco, has been developing systems for the acquisition and display of biostereometric data. Stereo photographs and X-ray images of the head are used to analyze growth and treatment effects during orthodontic treatment and orthognathic sucgery. Recent efforts have been directed towards automating anatomic feature location and tracking on series of time-separated cranial X-rays. Two tests were performed to evaluate the potential accuracies that could be achieved in feature tracking. In both tests, a series of cranial X-rays was converted to digital images using an array camera [Charge Injection Device (CID)] connected to a real-time video digitizer module or "frame grabber" installed in a microcomputer. The first test series consisted of a single X-ray image which was translated and rotated three times. The second series of images consisted of three actual cranial X-rays of a single subject, acquired over a period of approximately two years. A number of anatomic features were manually selected on the first image of each series. The features were automatically tracked on subsequent digital images, and their locations compared to those derived from manual digitizing of the original film images. |
0000 |
Oh, H; J, Park; Lagravere-Vich, M: Comparison of traditional RPE with two types of micro-implant assisted RPE: CBCT study.. In: Semin Orthod, vol. 25, no. 1, pp. 60-68, 0000. (Type: Journal Article | Abstract | Links | BibTeX | Tags: AAOF, adult, anterior openbite, Cranial base, extraction, Growth, Posttreatment, pressure tension, retrospective, technique, x-ray)@article{Oh2019b, Recently, various types of the Micro-implant Assisted RPE (MARPE) were introduced to obtain greater skeletal expansion and to minimize dental effects. In the present study, we evaluated skeletal and dental effects immediately after the completion of expansion using three different types of expanders— a traditional tooth-anchored maxillary expander (TAME) and two different types of MARPE, bone-anchored maxillary expander (BAME) and tooth-bone-anchored expander (MSE) using CBCT in adolescents. Overall, the MSE group showed much greater skeletal changes than the TAME and BAME groups, especially, at the nasal floor, maxillary base, and palatal suture. About 72–78% of suture opening was at PNS, which indicates slightly more opening anteriorly than posteriorly; however, it was relatively parallel in nature than anticipated. In all three groups, the greatest transverse changes with expansion occurred at the molar crowns and the 2nd greatest changes at the palatal suture opening at ANS. It is suggested that MSE can be a great alternative method in correcting maxillary skeletal transverse deficiency. |