Stress Distribution in Roots Restored with Fiber Posts and An Experimental Dentin Post: 3D-FEA

Autor(es)

Hugo Henrique Diana ^[1] ; Juliana Santos Oliveira ^[2] ; Mariana Carolina de Lara Ferro ^[3] ; Yara T. Corrêa Silva-Sousa ^[4] ; Érica Alves Gomes ^[5]

Afiliação do(s) autor(es)

^[1] University of Ribeirão Preto. School of Dentistry - Brasil

^[2] University of Ribeirão Preto. School of Dentistry - Brasil

^[3] University of Ribeirão Preto. School of Dentistry - Brasil

^[4] University of Ribeirão Preto. School of Dentistry - Brasil

^[5] University of Ribeirão Preto. School of Dentistry - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Dental Journal; v. 27, n. 2, p. 223-227, 2016-04-00.

Resumo

Abstract The aim of this study was to compare the stress distribution in radicular dentin of a maxillary canine restored with either a glass fiber post, carbon fiber post or an experimental dentin post using finite element analysis (3D-FEA). Three 3D virtual models of a maxillary canine restored with a metal-ceramic crown and glass fiber post (GFP), carbon fiber post (CFP), and experimental dentin post (DP) were obtained based on micro-CT images. A total of 180 N was applied on the lingual surface of the incisal third of each tooth at 45 degrees. The models were supported by the periodontal ligament fixed in three axes (x=y=z=0). The von Mises stress (VMS) of radicular dentin and the intracanal posts was calculated. The structures of all groups showed similar values (MPa) and distribution of maximum von Mises stress. Higher stress was found in the apical third of dentin while the posts presented homogeneous stress distribution along the axis. The fiber and dentin posts exhibited similar stress values and distribution. Thus, the experimental dentin post is a promising restorative material. (AU)

• Processo FAPESP: 13/23905-9 - Distribuição de tensões em raízes reabilitadas com pinos de fibra e um pino experimental de dentina: uma análise pelo MEF-3D
• Beneficiário: Hugo Henrique Diana
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica