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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...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Korean Association of Orthodontists
2017
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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. |
format | Online Article Text |
id | pubmed-5432438 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Korean Association of Orthodontists |
record_format | MEDLINE/PubMed |
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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