Stress analysis during post loading on implant system using finite element analysis method

Existence of stress distribution impact on the remodelling/osseointegration process, however, the distribution of stress in implant system is difficult to be measured.  The purpose of this study was to perform the three-dimensional finite element analysis (FEA) for stress distribution analysis on implant system during post loading. Materials and Methods: A three-dimensional model of mandible which is consisting of bone, implant and tooth surrounding implant are constructed from CBCT data. The processing data including segmentation and meshing were processed using MIMICS Software. FEA was performed in ANSYS to investigate the distribution of stress due to three different simulations of loading; pull-in, push-out and removal torque.   Results: The simulation showed that during the pull in and push out simulation, higher stresses were observed at the area around implant-bone conjunction. Stress also propagated into surrounding area around the nearest tooth. Propagation of the stress was much stronger into lingual bone then palatal direction. During removal torque simulation, the stress distribution was more concentrated on bone around the whole body implant.   Conclusions: FEA method has successfully analyzed the stress distribution due to different loading scenarios. Bone around the nearest tooth has been affected strongly due to loading process especially removal torque process.