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

Authors
 Kug-Ho You  ;  Kyung-Ho Kim  ;  Kee-Joon Lee  ;  Hyoung-Seon Baik 
Citation
 American Journal of Orthodontics and Dentofacial Orthopedics, Vol.153(5) : 685-691, 2018 
Journal Title
 American Journal of Orthodontics and Dentofacial Orthopedics 
ISSN
 0889-5406 
Issue Date
2018
MeSH
Adult ; Cone-Beam Computed Tomography* ; Facial Asymmetry/diagnostic imaging* ; Female ; Humans ; Imaging, Three-Dimensional* ; Male ; Retrognathia/diagnostic imaging* ; Young Adult
Abstract
INTRODUCTION: The purpose of this study was to analyze the morphologic features of skeletal units in the mandibles of patients with facial asymmetry and mandibular retrognathism using cone-beam computed tomography. METHODS: The subjects consisted of 50 adults with facial asymmetry and mandibular retrognathism, divided into the symmetry group (n = 25) and the asymmetry group (n = 25) according to the degree of menton deviation. Three-dimensional computed tomography scans were obtained with cone beam computed tomography. Landmarks were designated on the reconstructed 3-dimensional images. Linear and volumetric measurements were made on the mandibles. RESULTS: In the asymmetry group, the lengths of condylar, body, and coronoid units were shorter, and condylar width was narrower on the deviated side than on the nondeviated side (P <0.01). The lengths of angular and chin units were not significantly different between the deviated and nondeviated sides (P >0.05). Hemimandibular, ramal, and body volumes were less on the deviated side than on the nondeviated side (P <0.01). CONCLUSIONS: Condylar, body, and coronoid units contribute to mandibular asymmetry in patients with facial asymmetry and mandibular retrognathism.
Full Text
https://www.sciencedirect.com/science/article/pii/S0889540618300593
DOI
10.1016/j.ajodo.2017.08.024
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
김경호(Kim, Kyung Ho) ORCID logo https://orcid.org/0000-0002-8154-2041
백형선(Baik, Hyoung Seon)
이기준(Lee, Kee Joon) ORCID logo https://orcid.org/0000-0002-0782-3128
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/167467
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