An endodontically treated tooth becomes more susceptible to weakened root, fractures and extractions. The dental rehabilitation with materials that have physical and mechanical properties similar of the dentine has become a challenge to researchers. The glass fiber posts are amongst the main materials rehabilitators, with more physical and mechanical properties similar to dentin. Recently, a post developed from human dentin was made with the purpose of reducing the risk of root fractures. The aim of this study is to compare the stresses distribution in the remaining root dentin restored with glass fiber post, carbon fiber post and an experimental dentin post for the rehabilitation of a maxillary canine by 3D finite element (FE) method. This research will be submitted to the Ethics Committee in Research of the University of Ribeirão Preto. Based on computed microtomography, 3 models of a maxillary canines restored with complete metal-ceramic crowns and glass fiber post (G1), carbon fiber post (G2) and experimental dentin post (G3) that will be obtained using an appropriate software. The finite element software will generate the finite element mesh according to the properties of materials, boundary conditions and loading. Stress maps will be obtained and equivalent von Mises stress (ÃvM) will be calculated for the root and simulated intraradicular post.
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