Análise bidimensional de tensões em implante de nióbio e titânio pelo método dos elementos finitos

Abstract

The biomechanical of implants play an important hole in osseointegration. The finite element method provides a biomechanical study based on numerical evaluation from mathematical models. In this work, the von Mises stress from models with niobium implant was compared with titanium implant. A twodimensional model with screw type implant (4.1 x 10 mm) and cicatrizador (4.5 x 3 mm) in cortical and cancellous bone tissue was used. Force of 100 N was applied axially at the center surface of the cicatrizador. The materials on this analysis were assumed to be homogeneous, isotropic and linearly elastic. The analyzed stress was obtained from previously nodes selected on bone-implant contact, on implant, cortical and cancellous bone tissue inside. The results based on compared analysis between models with niobium implant and titanium showed a similar distribution of stress on implant, cortical and cancellous bone tissue inside, and bone-implant contact.