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The retrospective study of marginal bone loss around dental implants according to different autogenous bone grafts

이식된 자가골의 종류와 형태에 따른 임플란트 변연골 흡수량에 관한 후향적 연구

  • Kim, Tae-Yi (Department of Implantology, Graduate School of Clinical Dentistry, Ewha Womans University) ;
  • Kim, Ye-Mi (Department of Oral and Maxillofacial Surgery, School of Medicine, Ewha Womans University) ;
  • Kim, Ji-Youn (Department of Oral and Maxillofacial Surgery, School of Medicine, Ewha Womans University) ;
  • Kim, Myung-Rae (Department of Implantology, Graduate School of Clinical Dentistry, Ewha Womans University) ;
  • Kim, Sun-Jong (Department of Implantology, Graduate School of Clinical Dentistry, Ewha Womans University)
  • 김태이 (이화여자대학교 임상치의학대학원 임플란트학과) ;
  • 김예미 (이화여자대학교 의학전문대학원 치과학교실 구강악안면외과) ;
  • 김지연 (이화여자대학교 의학전문대학원 치과학교실 구강악안면외과) ;
  • 김명래 (이화여자대학교 임상치의학대학원 임플란트학과) ;
  • 김선종 (이화여자대학교 임상치의학대학원 임플란트학과)
  • Received : 2011.07.11
  • Accepted : 2011.10.12
  • Published : 2011.12.31

Abstract

Introduction: This study examined the cumulative resorption of implants placed in a severely atrophic mandible and analyzed the radiologic bone resorption in the marginal bone, after an autogenous bone graft including both block and particulates that had been harvested from the ramus and iliac crest. Materials and Methods: A retrospective study was performed on patients who had bone grafts for augmentation followed by implant installation in the mandible area from 2003 to 2008. Twelve patients (6 men and 6 women) who received 34 implants in the augmented sites were evaluated. Cumulative radiologic resorption around the implants was measured immediately, 3 months, 6 months and 12 months after implant installation surgery. Results: The installed implant in grafted bone showed 0.84 mm marginal bone resorption after 3 months and 50% total cumulative resorption after 1 year. The mean marginal bone resorption around the implant installed in the grafted bone was 0.44 mm after 3 months, 0.52 mm after 1 year, after which it stabilized. The implant survival rate was 97% (failed implant was 1/34). Marginal bone resorption of the installed implant in the autogenous onlay block bone grafts was 0.98 mm after 3 months, which was significantly higher than that of a particulated bone graft (0.74 mm) (P <0.05). Conclusion: An autogenous graft including block type and particulate type is a predictable procedure for the use of dental implants in a severely atrophic mandible. Implant placement in augmented areas show a relatively high survival and minimal bone loss, as revealed by a radiologic evaluation.

Keywords

References

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