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Maxillomandibular arch width differences at estimated centers of resistance: Comparison between normal occlusion and skeletal Class III malocclusion

OBJECTIVE: To evaluate the differences in maxillomandibular transverse measurements at either the crown or the estimated center of resistance (CR), and to compare values between normal occlusion and Class III malocclusion groups. METHODS: Dental casts and computed tomography (CT) data from 30 indivi...

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Autores principales: Koo, Yun-Jin, Choi, Sung-Hwan, Keum, Byeong-Tak, Yu, Hyung-Seog, Hwang, Chung-Ju, Melsen, Birte, Lee, Kee-Joon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Association of Orthodontists 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5432438/
https://www.ncbi.nlm.nih.gov/pubmed/28523243
http://dx.doi.org/10.4041/kjod.2017.47.3.167
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author Koo, Yun-Jin
Choi, Sung-Hwan
Keum, Byeong-Tak
Yu, Hyung-Seog
Hwang, Chung-Ju
Melsen, Birte
Lee, Kee-Joon
author_facet Koo, Yun-Jin
Choi, Sung-Hwan
Keum, Byeong-Tak
Yu, Hyung-Seog
Hwang, Chung-Ju
Melsen, Birte
Lee, Kee-Joon
author_sort Koo, Yun-Jin
collection PubMed
description OBJECTIVE: To evaluate the differences in maxillomandibular transverse measurements at either the crown or the estimated center of resistance (CR), and to compare values between normal occlusion and Class III malocclusion groups. METHODS: Dental casts and computed tomography (CT) data from 30 individuals with normal occlusion and 30 with skeletal Class III malocclusions were evaluated. Using the casts, dental arch widths (DAWs) were measured from the cusp tips, and basal arch widths (BAWs-cast) were measured as the distance between the points at the mucogingival junction adjacent to the respective cusp tips. The BAWs determined from CT (BAWs-CT) images were measured from the estimated CRs of the teeth. RESULTS: None of the DAW measurements or maxillomandibular DAW differences showed statistically significant intergroup differences. In contrast, the maxillary BAWs-CT and BAWs-cast were lesser in the Class III malocclusion group than in the normal occlusion group. The mandibular BAWs-CT were significantly greater in the Class III malocclusion group than in the normal occlusion group. Moreover, the maxillomandibular BAW differences on both CT and cast showed significant intergroup differences in all transverse measurements. CONCLUSIONS: The maxillomandibular DAW differences showed no significant intergroup differences. In contrast, the maxillomandibular BAW differences on both CT and cast showed significant intergroup differences in all transverse measurements. The maxillomandibular BAW differences at the estimated CRs, measured using CT or casts, can reveal underlying transverse maxillary basal arch deficiencies in patients with skeletal Class III malocclusions.
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spelling pubmed-54324382017-05-18 Maxillomandibular arch width differences at estimated centers of resistance: Comparison between normal occlusion and skeletal Class III malocclusion Koo, Yun-Jin Choi, Sung-Hwan Keum, Byeong-Tak Yu, Hyung-Seog Hwang, Chung-Ju Melsen, Birte Lee, Kee-Joon Korean J Orthod Original Article OBJECTIVE: To evaluate the differences in maxillomandibular transverse measurements at either the crown or the estimated center of resistance (CR), and to compare values between normal occlusion and Class III malocclusion groups. METHODS: Dental casts and computed tomography (CT) data from 30 individuals with normal occlusion and 30 with skeletal Class III malocclusions were evaluated. Using the casts, dental arch widths (DAWs) were measured from the cusp tips, and basal arch widths (BAWs-cast) were measured as the distance between the points at the mucogingival junction adjacent to the respective cusp tips. The BAWs determined from CT (BAWs-CT) images were measured from the estimated CRs of the teeth. RESULTS: None of the DAW measurements or maxillomandibular DAW differences showed statistically significant intergroup differences. In contrast, the maxillary BAWs-CT and BAWs-cast were lesser in the Class III malocclusion group than in the normal occlusion group. The mandibular BAWs-CT were significantly greater in the Class III malocclusion group than in the normal occlusion group. Moreover, the maxillomandibular BAW differences on both CT and cast showed significant intergroup differences in all transverse measurements. CONCLUSIONS: The maxillomandibular DAW differences showed no significant intergroup differences. In contrast, the maxillomandibular BAW differences on both CT and cast showed significant intergroup differences in all transverse measurements. The maxillomandibular BAW differences at the estimated CRs, measured using CT or casts, can reveal underlying transverse maxillary basal arch deficiencies in patients with skeletal Class III malocclusions. Korean Association of Orthodontists 2017-05 2017-03-13 /pmc/articles/PMC5432438/ /pubmed/28523243 http://dx.doi.org/10.4041/kjod.2017.47.3.167 Text en © 2017 The Korean Association of Orthodontists. http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Koo, Yun-Jin
Choi, Sung-Hwan
Keum, Byeong-Tak
Yu, Hyung-Seog
Hwang, Chung-Ju
Melsen, Birte
Lee, Kee-Joon
Maxillomandibular arch width differences at estimated centers of resistance: Comparison between normal occlusion and skeletal Class III malocclusion
title Maxillomandibular arch width differences at estimated centers of resistance: Comparison between normal occlusion and skeletal Class III malocclusion
title_full Maxillomandibular arch width differences at estimated centers of resistance: Comparison between normal occlusion and skeletal Class III malocclusion
title_fullStr Maxillomandibular arch width differences at estimated centers of resistance: Comparison between normal occlusion and skeletal Class III malocclusion
title_full_unstemmed Maxillomandibular arch width differences at estimated centers of resistance: Comparison between normal occlusion and skeletal Class III malocclusion
title_short Maxillomandibular arch width differences at estimated centers of resistance: Comparison between normal occlusion and skeletal Class III malocclusion
title_sort maxillomandibular arch width differences at estimated centers of resistance: comparison between normal occlusion and skeletal class iii malocclusion
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5432438/
https://www.ncbi.nlm.nih.gov/pubmed/28523243
http://dx.doi.org/10.4041/kjod.2017.47.3.167
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