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Influence of Ti-Ceramic or Ti-Composite crown on stress distribution: finite element study and additive manufacturing

A. ISPAS1,* , C. COSMA2, A. CRACIUN1, M. CONSTANTINIUC1, L. LASCU1, D. LEORDEAN2, C. VILAU2

Affiliation

  1. Department of Prosthodontics, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
  2. Tehnical Univesity of Cluj-Napoca, Romania

Abstract

The purpose of this study was to evaluate the tension distribution induced in teeth and dental prostheses, using the finite element method (FEA). Mathematical models, with the highest fidelity degree in representing the anatomical dimensions of the tooth and Ti-Ceramic, respectively Ti-Composite crowns were constructed using the finite element method. The models were built from a patient CBCT (cone beam computed tomography). There were six different scenarios of occlusal strain developed, among which two of them were placed on the contact points. The other four were distributed in a single point with vertical, respectively oblique direction. The applied force values were 67N, 135N and 454N. The FEA analysis demonstrates that the composite material undertakes and transfers all the tensions to the Ti substructure, which leads to slightly higher tension in dentine compared with the natural premolar. The Ti-Ceramic crown absorbs some of the tension and distributes to the dentine approximately the same tension as the enamel of the natural premolar..

Keywords

Titanium, Ceramic, Composite, von Mises equivalen stress, Occlusal trauma, Selective laser melting.

Submitted at: July 12, 2016
Accepted at: Sept. 29, 2016

Citation

A. ISPAS, C. COSMA, A. CRACIUN, M. CONSTANTINIUC, L. LASCU, D. LEORDEAN, C. VILAU, Influence of Ti-Ceramic or Ti-Composite crown on stress distribution: finite element study and additive manufacturing, Journal of Optoelectronics and Advanced Materials Vol. 18, Iss. 9-10, pp. 904-912 (2016)