Biomechanical Behavior of Implant-Supported Screw Retained Resin Prosthesis: a 3D Finite Element Analysis

Objectives: The aim of this study is to analyse separately the biomechanical behaviour of implant-supported screw retained resin prosthesis
Methods: It is 3-D finite element study. It analyses the mechanical behaviour of the different components of a single implant-supporting a screw retained resin plate. The finite element analysis software package ABAQUS was used to construct the model and to analyze the ‘Von Mises stress’.
Results: The highest stress concentration was observed in the dental implant, precisely in the lower part of the bone-implant interface, in both mesial and distal sides. Maximum stress value was 79.62MPa. The stress concentration was also observed in the cancellous bone around the implant bottom, specifically in the bone surrounding the apical region of the implant. The maximum stress value recorded in peri-implant cancellous bone was 22.82MPa. High stress values were also detected in the cortical bone; it was concentrated around the implant’s neck and distributed to a large section of the bone.
Conclusions: For this prosthesis type, the implant undergo the higher stress. However, this result must be interpreted as biomechanical predictions and should be confirmed by clinical study.