FEM analysis of different dental root canal-post systems in young permanent teeth.

摘要: AIM: Aim of this work was to carry out a comparative evaluation the structural behaviour different root canal posts (cylindrical, conical and triple conical) fitted in second lower bicuspid subjected compression bending test. MATERIALS AND METHODS: This study has been carried by numerical method analysis finite elements (FEM, Finite Element Method). Different tridimensional models were obtained CAT images an extracted tooth, endodontically treated, filled with guttapercha glass post. Images have elaborated software for (Mimics Ansys) CAD (Rhinoceros 3 D). In II Class restoration virtually created. simulation dental tissues (enamel, dentine cement), guttapercha, cement, posts, techniques cementation crown (composites adhesive systems) considered. RESULTS: Strain distributions tissues, cement compared. The equivalent tensions single components (traction, cut) analysed. all examined most strained part is resulted coronal one, even if total tension, tooth-post analyzed systems, uniformly distributed. A similar shown cement. CONCLUSIONS: According conditions bond load, varying according geometry considered our results confirm that there no substantial difference deformation treated tooth.