발치후 즉시 임플란트의 8년 누적 생존율에 대한 후향적 연구
An 8-year survival rate of immediate implants: retrospective study
고승희, 장윤영, 엄유정, 정의원, 김창성, 조규성, 최성호,
소속 상세정보
고승희 ( Ko Seung-Hee ) - 연세대학교 치과대학 치주과학교실
장윤영 ( Chang Yun-Young ) - 연세대학교 치과대학 치주과학교실
엄유정 ( Um Yoo-Jung ) - 연세대학교 치과대학 치주과학교실
정의원 ( Jung Ui-Won ) - 연세대학교 치과대학 치주과학교실
김창성 ( Kim Chang-Sung ) - 연세대학교 치과대학 치주과학교실
조규성 ( Cho Kyoo-Sung ) - 연세대학교 치과대학 치주과학교실
최성호 ( Choi Seong-Ho ) - 연세대학교 치과대학 치주과학교실
KMID : 0362720090470110758
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±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.
키워드
cumulative survival rate;immediate implant;retrospective study
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