Simulation on the effects of dental implant threads to the osseointegration potential

Abstract

In this paper, effect of the implant thread profile on the stability and osseointegration at the peri-implant bone were evaluated by finite element analysis. These study include five different common threads profile of implant body - buttress, reverse buttress, V-shape, sinusoidal and square - that were evaluated via finite element analysis. Three dimensional model of a mandible was reconstructed from CT dataset and a region of interest was selected at the left side around the first molar. The mandible was separated into two types - compact cortical and porous cancellous. This will allow for proper load transfer to the mandible during simulation of the mastication process. A generic abutment model was virtually connected to the implant body, and a crown representing the first molar was placed onto the abutment. The motion of the implant body relative to the bone was calculated under occlusal load ranging from 10N to 200N applied to the crown. Result showed that the reverse buttress and V-shape thread offer high stability by provide less micromotion at the dental implant body.