Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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Radiologic study of the healing process of the extracted socket of beagle dogs using cone beam CT

Cone beam CT를 이용한 비글견 발치창 치유과정에 대한 방사선학적 연구

  • Choi, Dong-Hoon (Department of Oral & Maxillofacial Radiology, School of Dentistry, Wonkwang University) ;
  • Lee, Wan (Department of Oral & Maxillofacial Radiology, School of Dentistry, Wonkwang University) ;
  • Kim, De-Sok (Department of Electrical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Byung-Do (Department of Oral & Maxillofacial Radiology, School of Dentistry, Wonkwang University)
  • 최동훈 (원광대학교 치과대학 구강악안면방사선학교실) ;
  • 이완 (원광대학교 치과대학 구강악안면방사선학교실) ;
  • 김대석 (한국과학기술원) ;
  • 이병도 (원광대학교 치과대학 구강악안면방사선학교실)
  • Published : 2009.03.31
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Abstract

Purpose: To longitudinally observe the healing process of extracted socket and the alterations of the residual ridge in healthy adult dogs using cone beam CT (CBCT). Materials and Methods: The mandibular premolars of two beagle dogs were removed and the extraction sites were covered with the gingival tissue. CBCTs (3D X-ray CT scanner, Alphard vega, Asahi Co.) were taken at baseline and at 1 week interval for 12 weeks. Radiographic density of extracted wounds was measured on normalized images with a custom-made image analysis program. The amount of alveolar crestal resorption after the teeth extraction was measured with a reformatted three-dimensional image using CBCT. Bony healing pattern of extracted wound of each group was also longitudinally observed and analyzed. Results: Dimensional changes occurred during the first 6 weeks following the extraction of dogs' mandibular premolars. The reduction of the height of residual ridge was more pronounced at the buccal than at the lingual aspect of the extraction socket. Radiographic density of extracted wounds increased by week 4, but the change in density stabilized after week 6. New bone formation was observed at the floor and the peripheral side of extracted socket from week 1. The entrance of extracted socket was sealed by a hard-tissue bridge at week 5. Conclusion: The healing process of extracted wound involved a series of events including new bone formation and residual ridge resorption.

Keywords

References

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