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Skeletal structure of asymmetric mandibular prognathism and retrognathism
BACKGROUND: This study aimed to compare the skeletal structures between mandibular prognathism and retrognathism among patients with facial asymmetry. RESULTS: Patients who had mandibular asymmetry with retrognathism (Group A) in The Netherlands were compared with those with deviated mandibular prog...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Nature Singapore
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10412507/ https://www.ncbi.nlm.nih.gov/pubmed/37556073 http://dx.doi.org/10.1186/s40902-023-00393-7 |
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author | Xi, Tong Vinayahalingam, Shankeeth Bergé, Stefaan Maal, Thomas Kwon, Tae-Geon |
author_facet | Xi, Tong Vinayahalingam, Shankeeth Bergé, Stefaan Maal, Thomas Kwon, Tae-Geon |
author_sort | Xi, Tong |
collection | PubMed |
description | BACKGROUND: This study aimed to compare the skeletal structures between mandibular prognathism and retrognathism among patients with facial asymmetry. RESULTS: Patients who had mandibular asymmetry with retrognathism (Group A) in The Netherlands were compared with those with deviated mandibular prognathism (Group B) in Korea. All the data were obtained from 3D-reformatted cone-beam computed tomography images from each institute. The right and left condylar heads were located more posteriorly, inferiorly, and medially in Group B than in Group A. The deviated side of Group A and the contralateral side of Group B showed similar condylar width and height, ramus-proper height, and ramus height. Interestingly, there were no inter-group differences in the ramus-proper heights. Asymmetric mandibular body length was the most significantly correlated with chin asymmetry in retrognathic asymmetry patients whereas asymmetric elongation of condylar process was the most important factor for chin asymmetry in deviated mandibular prognathism. CONCLUSION: Considering the 3D positional difference of gonion and large individual variations of frontal ramal inclination, significant structural deformation in deviated mandibular prognathism need to be considered in asymmetric prognathism patients. Therefore, Individually planned surgical procedures that also correct the malpositioning of the mandibular ramus are recommended especially in patients with asymmetric prognathism. |
format | Online Article Text |
id | pubmed-10412507 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Springer Nature Singapore |
record_format | MEDLINE/PubMed |
spelling | pubmed-104125072023-08-11 Skeletal structure of asymmetric mandibular prognathism and retrognathism Xi, Tong Vinayahalingam, Shankeeth Bergé, Stefaan Maal, Thomas Kwon, Tae-Geon Maxillofac Plast Reconstr Surg Research BACKGROUND: This study aimed to compare the skeletal structures between mandibular prognathism and retrognathism among patients with facial asymmetry. RESULTS: Patients who had mandibular asymmetry with retrognathism (Group A) in The Netherlands were compared with those with deviated mandibular prognathism (Group B) in Korea. All the data were obtained from 3D-reformatted cone-beam computed tomography images from each institute. The right and left condylar heads were located more posteriorly, inferiorly, and medially in Group B than in Group A. The deviated side of Group A and the contralateral side of Group B showed similar condylar width and height, ramus-proper height, and ramus height. Interestingly, there were no inter-group differences in the ramus-proper heights. Asymmetric mandibular body length was the most significantly correlated with chin asymmetry in retrognathic asymmetry patients whereas asymmetric elongation of condylar process was the most important factor for chin asymmetry in deviated mandibular prognathism. CONCLUSION: Considering the 3D positional difference of gonion and large individual variations of frontal ramal inclination, significant structural deformation in deviated mandibular prognathism need to be considered in asymmetric prognathism patients. Therefore, Individually planned surgical procedures that also correct the malpositioning of the mandibular ramus are recommended especially in patients with asymmetric prognathism. Springer Nature Singapore 2023-08-09 /pmc/articles/PMC10412507/ /pubmed/37556073 http://dx.doi.org/10.1186/s40902-023-00393-7 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Research Xi, Tong Vinayahalingam, Shankeeth Bergé, Stefaan Maal, Thomas Kwon, Tae-Geon Skeletal structure of asymmetric mandibular prognathism and retrognathism |
title | Skeletal structure of asymmetric mandibular prognathism and retrognathism |
title_full | Skeletal structure of asymmetric mandibular prognathism and retrognathism |
title_fullStr | Skeletal structure of asymmetric mandibular prognathism and retrognathism |
title_full_unstemmed | Skeletal structure of asymmetric mandibular prognathism and retrognathism |
title_short | Skeletal structure of asymmetric mandibular prognathism and retrognathism |
title_sort | skeletal structure of asymmetric mandibular prognathism and retrognathism |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10412507/ https://www.ncbi.nlm.nih.gov/pubmed/37556073 http://dx.doi.org/10.1186/s40902-023-00393-7 |
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