Maxillofacial Plastic and Reconstructive Surgery

Korean Association of Maxillofacial Plastic and Reconstructive Surgeons (대한악안면성형재건외과학회)
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3-D CT Image Study of Effect of Glenoid Fossa on Menton Deviation

하악 관절와의 형태가 하악 이부편위에 미치는 영향에 관한 3차원 영상 연구

  • Cho, Jin-Hyoung (Department of Orthodontics, Dental Science Research Institute, Chonnam National University School of Dentistry) ;
  • Lee, Kyung-Min (Department of Orthodontics, Dental Science Research Institute, Chonnam National University School of Dentistry) ;
  • Park, Hong-Ju (Department of Oral and Maxillofacial Surgery, Dental Science Research Institute, Chonnam National University School of Dentistry) ;
  • Hwang, Hyeon-Shik (Department of Orthodontics, Dental Science Research Institute, Chonnam National University School of Dentistry)
  • 조진형 (전남대학교 치의학전문대학원 교정학교실 치의학연구소) ;
  • 이경민 (전남대학교 치의학전문대학원 교정학교실 치의학연구소) ;
  • 박홍주 (전남대학교 치의학전문대학원 구강악안면외과학교실 치의학연구소) ;
  • 황현식 (전남대학교 치의학전문대학원 교정학교실 치의학연구소)
  • Received : 2011.02.18
  • Accepted : 2011.06.22
  • Published : 2011.07.31
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Abstract

Purpose: The purpose of this study was to define the relation of the degree of menton deviation and 3-D CT (computerized tomography) measurements of the glenoid fossa and the mandible, which are considered to have an influence on menton deviation. Methods: The CT images were obtained in 60 adults and these were transmitted to a computer and reconstructed using computer software. According to the degree of the menton deviation, which was measured on the posteroanterior cephalogram, the subjects were divided into the menton deviated group (30 adults) and the symmetry group (30 adults). A total of 11 measurements that might have an effect on menton deviation were determined and these were measured in the right and left sides using the function of 3-D measurement in the computer program. The 11 measurements consist of 6 measurements in the glenoid fossa (vertical position of the glenoid fossa and articular eminence, the sagittal position of the glenoid fossa and articular eminence, the depth of the glenoid fossa, and the anterior angle of the glenoid fossa), and 5 measurements in the mandible (ramus length, frontal ramal inclination, lateral ramal inclination, body length, body height). Results: The comparison of the differences between the menton deviated and symmetry groups and correlation analysis on the degree of menton deviation were carried out. The results of comparison of the right and the left difference between the menton deviated and symmetry groups showed that the vertical position and depth of the glenoid fossa were significantly increased in the menton deviated group. Conclusion: The results of the present study show that consideration of the shape and position of the glenoid fossa is necessary for making the diagnosis and administering proper treatment in facial asymmetry patients and especially growing patients.

Keywords

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