The Journal of the Korean dental association (대한치과의사협회지)

The Korean Dental Association (대한치과의사협회)
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An 8-year survival rate of immediate implants: retrospective study

발치후 즉시 임플란트의 8년 누적 생존율에 대한 후향적 연구

  • Ko, Seung-Hee (Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University) ;
  • Chang, Yun-Young (Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University) ;
  • Um, Yoo-Jung (Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University) ;
  • Jung, Ui-Won (Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University) ;
  • Kim, Chang-Sung (Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University) ;
  • Cho, Kyoo-Sung (Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University) ;
  • Choi, Seong-Ho (Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University)
  • 고승희 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소) ;
  • 장윤영 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소) ;
  • 엄유정 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소) ;
  • 정의원 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소) ;
  • 김창성 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소) ;
  • 조규성 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소) ;
  • 최성호 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소)
  • Published : 2009.11.01
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Abstract

Purpose : Schulte introduced immediate implant cases in 1970s, since then many patients have been treated by immediate implants. The aim of this study was to evaluate the cumulative survival rate of immediate implant and to analyze various factors associated with survival of immediate implant in a 8-year period retrospectively. Materials and methods : From May, 2000 to October, 2007, 77 implants were placed in 63 patients immediately after tooth extraction at Department of Periodontology, Yonsei University Hospital. The implant survival rate was analyzed using a life-table analysis. After delivery of prosthesis, along 1 year of observation period, all implants were evaluated clinically and radiographically. Results : Among 77 implants, 59 were placed in maxilla and 18 in mandible. The most common site of the implantation was Mx anterior (65%). The overall survival rate was 94.8% over a mean follow-up period of $44.2{\pm}21$ months and the 8-year cumulative survival rate was 94.6%. Failure occurred in 4 implants, all of which were due to early failures. None of the following factors were significantly associated with the survival of immediate implants: advanced surgical technique including bone graft and guided bone regeneration, the types of implants, causes of tooth loss, and types of prosthesis. Conclusion : On the basis of 8-year life time analysis, immediate implant placement can be considered a safe and predictable treatment mordality.

Keywords

References

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