Eventos Anais de eventos
ENEBI 2018
6º Encontro Nacional de Engenharia Biomecânica
CRACK INITIATION AND PROPAGATION IN A POST-AND-CORE RESTORED MAXILLARY FIRST PREMOLAR: A 2D ANALYSIS
Submission Author:
Veronika Fedotova , MG
Co-Authors:
Veronika Fedotova, Estevam Barbosa de Las Casas, Osvaldo Luís Manzoli, Claudia Machado de Almeida Mattos, Eduardo Alexandre Rodrigues
Presenter: Veronika Fedotova
doi://10.26678/ABCM.ENEBI2018.EEB18-0120
Abstract
The primary purpose of a post in post-and-core restoration systems is to retain the core in an endodontically treated tooth that has lost its coronal structure extensively. The aim of the present study is to compare the crack initiation and propagation conditions in an endodontically treated maxillary first premolar tooth restored by post-and-core system with one and two posts. The study is done using the finite element method employing the strategy named mesh fragmentation technique. The results show that a tooth restored with a single post can withstand higher loads before the first fracture occurs. In the case of the two-post system a catastrophic fracture occurred on the vestibular root of the tooth at a relatively low load of 365 N even when no adhesive bond failure was permitted on the material interfaces. The results suggest that the use of multiple posts for tooth restoration can lead to root weakening.
Keywords
Post-and-core restoration, Interface finite elements, Multiple posts, Tooth fracture, Adhesive bond failure
