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3차원 전산화 단층 사진을 이용한 안면비대칭 환자의 악교정 수술 전, 후 교근 분석

Other Titles
 Analysis of masseter muscle in facial asymmetry before and after orthognathic surgery using 3-dimensional computed tomography 
Authors
 서승아  ;  백형선  ;  황충주  ;  유형석 
Citation
 Korean Journal of Orthodontics (대한치과교정학회지), Vol.39(1) : 18-27, 2009 
Journal Title
 Korean Journal of Orthodontics (대한치과교정학회지) 
ISSN
 2234-7518 
Issue Date
2009
Keywords
Masseter muscle ; Facial asymmetry ; Mandibular setback osteotomy ; Normal occlusion ; Three dimensional computed tomography (3D CT)
Abstract
Objective: The purpose of this study was to understand the differences in masseter muscle(MM) between the shifted and non-shifted sides in facial asymmetry patients, and the changes shown by MM after mandibular surgery. Methods: Pre- and post-operative CT scans were performed on 12 Class III patients with facial asymmetry who were treated by intraoral vertical ramus osteotomy and 10 subjects with normal occlusion. Using the V-works 4.0 program(Cybermed, Seoul, Korea), 3-dimensional images of the mandible, and MM were reconstructed, and evaluated. Results: In the asymmetry group, the MM angle between the shifted and non-shifted sides was only significantly different(p<0.05). Compared with normal occlusion, the asymmetry group showed a significantly smaller volume and maximum cross-sectional area in both sides of MM(p<0.05). After mandibular surgery, the angle of MM(p<0.01) and differences in angle between the shifted and non-shifted sides of MM(p<0.05) were significantly decreased. The thickness in the maximum cross-sectional area was significantly increased(p<0.01). After surgery, MM in facial asymmetry patients was similarly changed to those in the normal occlusion group except for widths. Conclusions: MM in facial asymmetry was definitely different from those in normal occlusion. However, this study suggests that MM changed symmetrically in conjunction with the mandible after proper mandibular surgery
Files in This Item:
T200900565.pdf Download
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Baik, Hyoung Seon(백형선)
Yu, Hyung Seog(유형석) ORCID logo https://orcid.org/0000-0002-1275-5078
Hwang, Chung Ju(황충주) ORCID logo https://orcid.org/0000-0003-3024-4551
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/103507
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