Fracture Initiation at the Zirconia/Veneer Interface-A Finite Element Simulation
M. M. Mirsayar and A. T. Samaei
DOI : 10.3844/ajeassp.2015.354.359
American Journal of Engineering and Applied Sciences
Volume 8, Issue 3
Zirconia/veneer bilayered components are extensively used in dental restoration technology to improve resistance of toothâs 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 âinterface debondingâ will be happened.
© 2015 M. M. Mirsayar and A. T. Samaei. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.