Influence of ferrule, post system, and length on biomechanical behavior of endodontically treated anterior teeth

Journal of Endodontics
Paulo César Freitas Santos-FilhoLuis Roberto Marcondes Martins

Abstract

The aim of this study was to evaluate the influence of post system, length, and ferrule on biomechanical behavior of endodontically treated anterior teeth. The investigation was conducted by using laboratory tests and 3-dimensional finite element analysis. Eighty bovine incisors were selected and divided into 8 treatment groups (n = 10) with absence of ferrule and 2.0 mm of ferrule, restored with glass fiber post or cast post and core, and 12.0 and 7.0 mm of post length. The specimens were loaded at 135° angle, and the strain was measured by using strain gauge method. Specimens were subsequently loaded until fracture. Strain and fracture resistance results were analyzed by 3-way analysis of variance and Tukey honestly significant difference tests (α = 0.05). Three-dimensional models of a maxillary central incisor were generated with the same treatment variations used in laboratory tests. Each model was subjected to 100 N oblique loads. Results were evaluated by von Mises criterion. Ferrule was a determining factor in the strain, fracture resistance, and fracture pattern. In the absence of ferrule, the use of fiberglass posts represents a conservative choice from the standpoint of the fracture patterns observed. The length of 7 ...Continue Reading

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Citations

Apr 14, 2017·Brazilian Oral Research·Altair Soares MouraAntonio Miranda Cruz
Dec 17, 2016·Brazilian Dental Journal·Mariana Carolina de Lara FerroErica Alves Gomes
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