A Retrospective Clinical Evaluation of the Survival of Dental Implants in Combination with Sinus Floor Elevation at 3 Years

Abstract

The purpose of this study was to evaluate the risk factors for the loss of implants with sinus floor elevation. We statistically carried out a clinical examination on 49 cases, 80 implants at 3 years after the fitting of implant-anchored fixed prostheses.
The results are summarized as follows:
1. Two implants failed in 80 implants, indicating survival rates of 97.5%.
2. There was no statistically significant difference between implant placement timing, initial bone height, sinus membrane thickness, type, diameter, primary stability of implants and graft materials used for sinus floor elevation.
3. The length of implant affected the survival of implants used for sinus floor elevation.