A retrospective study of the cumulative survival rate of implants installed in combination with sinus elevation

상악동 거상술을 동반한 임플란트의 누적생존율에 대한 연구

  • Koo, Hae-Jin (School of Dentistry, Seoul National University) ;
  • Cho, Young-Dan (Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University) ;
  • Ku, Young (Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University)
  • 구해진 (서울대학교 치의학대학원 치의학과) ;
  • 조영단 (서울대학교 치의학대학원 치주과학교실, 서울대학교 치학연구소, BK21 프로그램) ;
  • 구영 (서울대학교 치의학대학원 치주과학교실, 서울대학교 치학연구소, BK21 프로그램)
  • Received : 2016.10.27
  • Accepted : 2016.12.13
  • Published : 2017.02.28

Abstract

Objectives : The aim of this study was to evaluate the cumulative survival rates of the implants placed into grafted sinus and determine the effect of age, gender, smoking, and systemic disease on the implant cumulative survival rates. Materials and Methods : The retrospective study was performed on 51 implants placed in 26 patients by one dentist at the Dental Implant Center, Seoul National University Dental Hospital in the years 2000-2010. The cumulative survival rates were calculated by the Kaplan-Meier method. The differences within the factors were analyzed using log-rank test and the correlations between the factors and implant survival rates were analyzed using Cox proportional hazard model. Results : 1. Among the total of 51 implants placed in 26 patients, 7 implants failed and 44 implants remained stable. The 1-year, 5-year, and 10-year cumulative survival rates were 92%, 88%, and 85%, respectively. 2. Patients in their 50s and in their 70s showed statistically significant difference in the cumulative survival rates (P < 0.05). Gender and the existence of systemic disease did not show significant results. 3. In the implant treatment, smokers showed 7.5 times higher risk of implant failure than non-smokers (P < 0.05). Conclusion: Implants installed in combination with sinus elevation can be considered as a reliable treatment method.

Keywords

References

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