INFLUENCE OF IMPLANT GEOMETRY ON THE SCREW-IN TORQUE

Authors: Vasileios ALEVIZAKOS, Gergo MITOV, John-Patrick ALFERS, Constantin VON SEE, Marcus SCHILLER

Abstract:

Background. The aim of this in vitro study was to evaluate the influence of implant length and diameter on the insertion torque and implant stability quotient (ISQ) in a porcine jaw bone. Materials and methods. Cylindrical implants were inserted into porcine jaw bone in vitro. Four groups of different implant length and diameters were investigated. The maximum insertion torque and ISQ value in mesio-distal and bucco-lingual direction were evaluated and analyzed statistically. Results and discussion. The mean insertion torque measured in the long implant groups was significantly higher than in the shorter ones. A similar tendency could be observed for the mean ISQ values, with significantly higher ISQ values of the longer implants compared to the values of groups 2 and 3. The highest ISQ values were observed in group 1. Conclusions. The insertion torque and ISQ value vary, depending on implant length and diameter.

Keywords:
  • implant geometry
  • IMPLANT STABILITY
  • implant surface
  • insertion torque
  • resonance frequency analysis