An 8-year survival rate of immediate implants: retrospective study

Ko,  Seung-Hee; Chang,  Yun-Young; Um,  Yoo-Jung; Jung,  Ui-Won; Kim,  Chang-Sung; Cho,  Kyoo-Sung; Choi,  Seong-Ho

doi:2009.47.11.758

J Korean Dent Assoc > Volume 47(11); 2009 > Article

Journal of Korean Dental Association 2009;47(11):758-768.
DOI: https://doi.org/10.22974/jkda.2009.47.11.007 Published online November 30, 2009.

발치후 즉시 임플란트의 8년 누적 생존율에 대한 후향적 연구

고승희¹, 장윤영², 엄유정³, 정의원⁴, 김창성⁵, 조규성⁶, 최성호⁷

^¹연세대학교 치과대학 치주과학교실, 치주조직재생연구소
^²연세대학교 치과대학 치주과학교실, 치주조직재생연구소
^³연세대학교 치과대학 치주과학교실, 치주조직재생연구소
^⁴연세대학교 치과대학 치주과학교실, 치주조직재생연구소
^⁵연세대학교 치과대학 치주과학교실, 치주조직재생연구소
^⁶연세대학교 치과대학 치주과학교실, 치주조직재생연구소
^⁷연세대학교 치과대학 치주과학교실, 치주조직재생연구소

An 8-year survival rate of immediate implants: retrospective study

Seung-Hee Ko¹, Yun-Young Chang², Yoo-Jung Um³, Ui-Won Jung⁴, Chang-Sung Kim⁵, Kyoo-Sung Cho⁶, Seong-Ho Choi⁷

¹Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University
²Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University
³Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University
⁴Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University
⁵Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University
⁶Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University
⁷Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University

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 44.2pm21 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.

Key Words: cumulative survival rate;immediate implant;retrospective study;