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KMID : 0362720170550020008
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Journal of the Korean Dental Association
2017 Volume.55 No. 2 p.8 ~ p.19
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A retrospective study of the cumulative survival rate of implants installed in combination with sinus elevation
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Koo Hae-Jin
Cho Young-Dan
Ku Young
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Abstract
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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.
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KEYWORD
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sinus lift, implant, cumulative survival rate, risk factors
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