Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
권호 표지

Morphological analysis of mandibular posterior edentulous bones using cross-sectional CT images

단면 CT 영상을 이용한 무치악 하악 대구치부 잔존골의 형태 분석

  • Lee, Sul-Mi (Department of Oral and Maxillofacial Radiology, School of Dentistry Seoul National University) ;
  • Huh, Kyung-Hoe (Department of Oral and Maxillofacial Radiology, Dental Research Institute, School of Dentistry Seoul National University) ;
  • Yi, Won-Jin (Department of Oral and Maxillofacial Radiology, Dental Research Institute and BK21, School of Dentistry, Seoul National University) ;
  • Heo, Min-Seok (Department of Oral and Maxillofacial Radiology, Dental Research Institute, School of Dentistry Seoul National University) ;
  • Lee, Sam-Sun (Department of Oral and Maxillofacial Radiology, Dental Research Institute, School of Dentistry Seoul National University) ;
  • Gang, Tae-In (Department of Dentistry, College of Medicine, Hallym University) ;
  • Choi, Soon-Chul (Department of Oral and Maxillofacial Radiology, Dental Research Institute, School of Dentistry Seoul National University)
  • 이설미 (서울대학교 치과대학 구강악안면방사선학교실) ;
  • 허경회 (서울대학교 치과대학 구강악안면방사선학교실, 치학연구소) ;
  • 이원진 (서울대학교 치과대학 구강악안면방사선학교실, 치학연구소 및 BK21) ;
  • 허민석 (서울대학교 치과대학 구강악안면방사선학교실, 치학연구소) ;
  • 이삼선 (서울대학교 치과대학 구강악안면방사선학교실, 치학연구소) ;
  • 강태인 (한림대학교 의과대학 치과학교실) ;
  • 최순철 (서울대학교 치과대학 구강악안면방사선학교실, 치학연구소)
  • Published : 2007.09.30
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Abstract

Purpose: The purpose of this study was to evaluate the morphologic features of posterior edentulous mandible for Korean patients using cross-sectional CT images. Materials and Methods: Computed tomographic cross-sectional views taken in 2004 and 2005 at Seoul National University Dental Hospital were analyzed by an oral and maxillofacial radiologist. Four indices were measured to meet the purpose of this study: 1) the horizontal distance between the alveolar crest and mandibular canal (Type), 2) the angle of the mandibular long axis (Angle), 3) the bucco-lingual location of mandibular canal, and 4) the depth of the submandibular fossa. The averages and standard deviations of the measurements were compared according to the location (the first and second molar area) and sex of the patients. Results: Statistically significant difference was found in Type, Angle, and submandibular fossa depth between the first and second molar area (p<0.05). However, there was no significant difference between men and women in any of the measured indices. Most of the mandibular canals were located in lingual side of posterior mandible. Conclusion: More care should be taken when an implant is installed on the mandibular second molar area.

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