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Updated: May 3, 2026
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
A Four-Year Survival Rate Multicenter Prospective Clinical Study on 377 Implants: Correlations Between Implant
Carlo Maiorana1, Davide Farronato2, Stefano Pieroni2
11 Oral Surgery and Implantology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milano, University of Milan, Milan, Italy.
Abstract:
The purpose of this study was to evaluate the survival rate and incidence of prosthetic complications in 377 implants with a double octagon connection. Furthermore, the correlations among implant dimensions (diameter and length), bone quality, and insertion torque were investigated. A 4-year multicenter prospective clinical study was designed to evaluate the survival rate of 377 dental implants inserted in 189 patients between January 2004 and April 2010. After an average follow-up of 46 months, the implant survival rate was 99.7%, and the incidence of complication was 0.53%. Moreover, insertion torque was statistically related in a significant way to implant diameter. The connection system seemed to reduce the risk that the prosthetic component screw would loosen. Within the limits of this study, it was observed that a wider diameter corresponded to a higher implant primary stability. Implant length did not seem to be critical in obtaining higher primary stability.
