Influence of Cantilever on Stress Distribuition in Bone around Dental Implants: a Three-dimensional Finite Element Analysis

The use of 3D model to simulation dentistry problems with finite element method has been reported. The purpose of this study was to evaluate the stress distribution in the cortical bone under different shape of dental implants in cantilever loading. The models were constructed with commercial conical and cylindrical implants of 4.3 mm diameter and 11mm length using ANSYS program. All materials used in the models were considered to be isotropic, homogeneous and lineary elastic. The elastic properties, the loads and constraints used were taken from the literature. The highest values of stress are found when the cylindrical implant was used. Therefore, the results indicate that the use of conical implant in patients with cantilever structure is more indicated if compared with the cylindrical implant.