Stress evaluation of primary stability of implant by SAT Method using finite element analysis

Abstract

In order to secure the initial fixation for implanting an implant, obtaining mechanical interdigitations between the implant and a bone is a critical element. For that reason, at the initial fixation of the implanted implant, understanding the stress distribution on the implant and jawbone is clinically necessary. In this research, we fabricated CAD data based on the actual CT images, and by using the finite element method, we examined the stresses generated in the jawbone and implant during the initial fixation of the implant by the SAT (Step Adaptation Technique) method. We fabricated two types of analysis models: normal drill hole and the SAT method, and reproduced it on CAD. As a result of the finite element analysis, by using the SAT method, the stresses were increased by about five times the maximum on the jawbone and about six times the maximum on the implant compared to the normal drill hole. This suggests that the SAT method is an effective method for securing the initial fixation of the implant.