Self-cutting blades and their influence on primary stability of tapered dental implants in a simulated low-density bone model: A laboratory study

Abstract

Objective: This study tested the hypothesis that there would be differences in primary stability due to the presence of self cutting blades. We investigated the effect of a self-cutting blade implant design on the primary stability of tapered dental implants in a simulated low-density bone model. Study design: Implant fixtures with 2 different designs, one with self-cutting blades and the other without self-cutting blades, were fabricated in the same implant system. Insertion torque, resonance frequency analysis, reverse torque, and pull-out and push-in tests were evaluated in grade no. 10 solid rigid polyurethane foam. Results: All 5 assessments of the group without self-cutting blades were significantly higher than those of the self-cutting group (P <.001). Conclusions: The implants without self-cutting blades create a lateral compression with increased contact surface area and consequently improve the primary stability in a simulated low-density bone model. ⓒ 2011 Mosby, Inc.