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Three-dimensional computed tomography analysis of mandibular morphology in patients with facial asymmetry and mandibular prognathism.

Authors
 Kug-Ho You  ;  Kee-Joon Lee  ;  Sang-Hwy Lee  ;  Hyoung-Seon Baik 
Citation
 American Journal of Orthodontics and Dentofacial Orthopedics, Vol.138(5) : 540-1, 2010 
Journal Title
 American Journal of Orthodontics and Dentofacial Orthopedics 
ISSN
 0889-5406 
Issue Date
2010
Abstract
INTRODUCTION: The purpose of this study was to investigate the dimensional changes in each skeletal unit in the mandibles of patients with facial asymmetry and mandibular prognathism. METHODS: The patients consisted of 50 adults with mandibular prognathism, divided into the symmetry group (n = 20) and the asymmetry group (n = 30) according to the degree of menton deviation. Three-dimensional computed tomography scans were obtained with a spiral computed tomography scanner. Landmarks were designated on the reconstructed 3-dimensional surface models. The lines to represent condylar, coronoid, angular, body, and chin units were used. Ramal and body volumes were measured in the hemi-mandibles. RESULTS: In the asymmetry group, condylar and body unit lengths were significantly longer, and coronoid unit length was significantly shorter on the nondeviated side than on the deviated side (P <0.01). Angular and chin unit lengths were not significantly different between the 2 sides (P >0.05). Ramal volume was significantly greater on the nondeviated side (P <0.01), but body volume was not significantly different between the 2 sides (P >0.05). CONCLUSIONS: Both condylar and body units appeared to contribute to mandibular asymmetry, with a more central role of the condylar unit.
Full Text
http://www.sciencedirect.com/science/article/pii/S0889540610005792
DOI
10.1016/j.ajodo.2010.04.025
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Oral and Maxillofacial Surgery (구강악안면외과학교실) > 1. Journal Papers
Yonsei Authors
백형선(Baik, Hyoung Seon)
이기준(Lee, Kee Joon) ORCID logo https://orcid.org/0000-0002-0782-3128
이상휘(Lee, Sang Hwy) ORCID logo https://orcid.org/0000-0002-9438-2489
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/102449
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