Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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Relationship of bony trabecular characteristics and age to bone mass

연령과 골소주 특성의 골량에 대한 연관관계

  • Choi Dong-Hoon (Department of Oral & Maxillofacial Radiology, School of Dentistry, Wonkwang University) ;
  • Song Young-Han (Department of Oral & Maxillofacial Radiology, School of Dentistry, Wonkwang University) ;
  • Yoon Young-Nam (Department of Oral & Maxillofacial Radiology, School of Dentistry, Wonkwang University) ;
  • Lee Wan (Department of Oral & Maxillofacial Radiology, School of Dentistry, Wonkwang University) ;
  • Lee Byung-Do (Department of Oral & Maxillofacial Radiology, School of Dentistry, Wonkwang University)
  • 최동훈 (원광대학교 치과대학 구강악안면방사선학교실) ;
  • 송영한 (원광대학교 치과대학 구강악안면방사선학교실) ;
  • 윤영남 (원광대학교 치과대학 구강악안면방사선학교실) ;
  • 이완 (원광대학교 치과대학 구강악안면방사선학교실) ;
  • 이병도 (원광대학교 치과대학 구강악안면방사선학교실)
  • Published : 2006.06.01
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Abstract

Purpose : Bony strength is dependent on bone mass and bony structure. So this study was designed to investigate the relationship between the bone mass and bony trabecular characteristics. Subjects and Methods : Study subjects were 51 females (average age 68.6 years) and 20 males (average age 66.4 years). Bone mineral density (BMD, $grams/cm^2$) of proximal femur was measured by a dual energy X-ray absorptiometry (DEXA). Regions of interest (ROIs) were selected from the digitized radiographs of proximal femur. A customized computer program processed morphologic operations (MO) of ROIs. 44 skeletal variables of MO were calculated from ROIs on the Ward's triangle and greater trochanter of femur. WHO BMD classes were predicted by MO variables of the same ROI. Classification and Regression Tree analysis was used for calculating weighted kappa values, sensitivity and specificity of MO. Results : The discriminating factors of morphologic operation were branch point, branch point [per cm sq]. Age also played important role in distinguishing osteoporotic classes. The sensitivity of MO at Ward's triangle and Greater Trochanter was 91.8%, 65.6%, respectively. The specificity of MO was 100% at Ward's triangle and Greater Trochanter. Conclusion : Bony trabecular characteristics obtained using radiological bone morphometric analysis seem to be related to bone mass.

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