Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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Comparison of cone-beam computed tomography and ultrasonography on experimental bone lesion

실험적 골 병소에 대한 콘빔형전산화단층영상과 초음파영상의 비교

  • Kim, Min-Sung (Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyung Hee University) ;
  • Park, Cheol-Woo (Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyung Hee University) ;
  • Kim, Gyu-Tae (Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyung Hee University) ;
  • Choi, Yong-Suk (Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyung Hee University) ;
  • Hwang, Eui-Hwan (Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyung Hee University)
  • 김민성 (경희대학교 치의학전문대학원 구강악안면방사선학교실) ;
  • 박철우 (경희대학교 치의학전문대학원 구강악안면방사선학교실) ;
  • 김규태 (경희대학교 치의학전문대학원 구강악안면방사선학교실) ;
  • 최용석 (경희대학교 치의학전문대학원 구강악안면방사선학교실) ;
  • 황의환 (경희대학교 치의학전문대학원 구강악안면방사선학교실)
  • Received : 2010.07.29
  • Accepted : 2010.08.12
  • Published : 2010.09.30
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Abstract

Purpose : This study was performed to evaluate the diagnostic ability of ultrasonography in detection of bone defects and new bone formation. Materials and Methods : Experimental bony defects were prepared on the parietal bone samples acquired from 3.5 kg New Zealand male rabbits. The defects were evaluated using ultrasonography and CBCT, and examined histologically at interval of 1, 3, 6, and 8 weeks. Results : Ultrasonograph demonstrated hyperechogenicity in the defect area at 3 weeks and broadened hyperechogenicity from the margin of bone defect at 6 and 8 weeks due to new bone formation. On the CBCT images, new bone formation was first observed at 3 weeks around the margin of the defect, and showed gradually increase at 6 and 8 weeks. Histologic findings revealed existence of the fibroblasts and fibrous connective tissue with abundant capillary vessels only at 1 week, but osteoid tissue and newly formed trabecular bone at 3 weeks. Bone remodeling in the defect area was observed at 6 weeks and increased calcification and dense trabecular bone formation was observed at 8 weeks. Conclusions : Ultrasonograph proved to be a very useful diagnostic tool in detecting the bony defect and new bone formation. Additionally, ultrasonography provided valuable information regarding the blood supply around the defect area.

Keywords

References

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