Journal of Periodontal and Implant Science

Korean Academy of Periodontology (대한치주과학회)
권호 표지

Evaluation of peri-implant bone density changes in $Br{\aa}nemark$ implants by computer assisted densitometric image analysis (CADIA)

디지털 공제술을 이용한 $Br{\aa}nemark$ 임플란트 주위 골조직 분석

  • So, Sung-Soo (Department of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration) ;
  • Noh, Hyuen-Soo (Department of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration) ;
  • Kim, Chang-Sung (Department of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration) ;
  • Choi, Seong-Ho (Department of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration) ;
  • Chae, Jung-Kiu (Department of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration) ;
  • Kim, Chong-Kwan (Department of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration) ;
  • Cho, Kyoo-Sung (Department of Periodontology, College of Dentistry, Yonsei University, Research Institute for Periodontal Regeneration)
  • 소성수 (연세대학교 치주과학교실, 치주조직재생연구소) ;
  • 노현수 (연세대학교 치주과학교실, 치주조직재생연구소) ;
  • 김창성 (연세대학교 치주과학교실, 치주조직재생연구소) ;
  • 최성호 (연세대학교 치주과학교실, 치주조직재생연구소) ;
  • 채중규 (연세대학교 치주과학교실, 치주조직재생연구소) ;
  • 김종관 (연세대학교 치주과학교실, 치주조직재생연구소) ;
  • 조규성 (연세대학교 치주과학교실, 치주조직재생연구소)
  • Published : 2007.03.30
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Abstract

CADIA(Computer-assisted densitometric image analysis) method is used to analyze bone density changes around the implants. The usefullness and reproducibility of the method was assessed. We tried to find out if there is any possibility to quantitiate and qualitify peri-implant bone density change as time passes. And we concluded that this newly developed linear analysis is efficient for analyzing peri-implant bone density change non-Invasively. In this study, 2152 machined $Br{\aa}nemark$ fixtures installed from 1994 to 2002 in the department of Periodontics, Dental hospital of College of Dentistry, Yonsei University were included. Of these fixtures 22 radiographically analyzable failed fixtures were used as experimental group, and 22 successful implants placed in the same patient were used as control group. 1. 57 out of 1635 machined $Br{\aa}nemark$ standard and Mk II implants system failed, the survival rate was 96.5%. And 11 out of 517 machined $Br{\aa}nemark$ Mk III and Mk IV implants system failed, the survival rate was 97.9%. Total survival rate was 96.8%. 2. 22 failed implants were used for the analysis, 10 of which failed before prosthetic treatment due to infection and overheating. 12 failed due to overload after prosthetic treatment, 63.6% of which failed during the early phase of functional loading, i, e. before 1 year of loading. 3. Bone density change values around coronal region of the failed implants were $-6.54{\pm}6.35$, middle region were $-3.53{\pm}5.78$, apical region were $-0.75{\pm}10.33$, resulting in average of $-3.71{\pm}8.03$. 4. Bone density change values around coronal region of the successful implants were $4.25{\pm}4.66$, middle region were $6.33{\pm}5.02$, apical region were $9.89{\pm}4.67$, resulting in average of $6.27{\pm}5.29$. 5. There was a statistically significant difference between two groups (p<0.01). In conclusion, the linear analysis method using computer-assisted densitometric image analysis could be a useful method for the analysis of implants, and could be used for future implant researchs.

Keywords

References

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