Research Article Open Access

Fracture Initiation at the Zirconia/Veneer Interface-A Finite Element Simulation

M. M. Mirsayar1 and A. T. Samaei2
  • 1 Texas A&M University, United States
  • 2 University of California Merced, United States
American Journal of Engineering and Applied Sciences
Volume 8 No. 3, 2015, 354-359

DOI: https://doi.org/10.3844/ajeassp.2015.354.359

Submitted On: 29 April 2015 Published On: 8 June 2015

How to Cite: Mirsayar, M. M. & Samaei, A. T. (2015). Fracture Initiation at the Zirconia/Veneer Interface-A Finite Element Simulation. American Journal of Engineering and Applied Sciences, 8(3), 354-359. https://doi.org/10.3844/ajeassp.2015.354.359

Abstract

Zirconia/veneer bilayered components are extensively used in dental restoration technology to improve resistance of tooth's surface from decay. The direction of the fracture propagation at the interface of zirconia and veneer is investigated in this study. Finite element analysis is performed on a bi-material four point bend specimen in different geometries and the fracture initiation angle is obtained using Maximum Tangential Stress (MTS) criterion. The effect of specimen geometry on the fracture initiation angle is discussed. Because an interface crack may propagate through interface or kink into one of the materials, some comments are given to determine under which condition "interface debonding" will be happened.

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Keywords

  • Interface Crack
  • Zirconia
  • Veneer
  • Fracture Initiation
  • Finite Element