tailieunhanh - A finite element study on the fracture initiation at the zirconia/ veneer interface: An application in dental materials

Zirconia/ veneer bi-layered 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 paper. | Nội dung Text A finite element study on the fracture initiation at the zirconia veneer interface An application in dental materials Engineering Solid Mechanics 3 2015 207-214 Contents lists available at GrowingScience Engineering Solid Mechanics homepage esm A finite element study on the fracture initiation at the zirconia veneer interface An application in dental materials M. M. Mirsayara and A. T. Samaeib c a Zachry Department of Civil Engineering Texas A amp M University College Station TX 77843-3136 USA b School of Engineering University of California Merced Merced California 95343 USA c Young Researchers amp Elite Club Chalous Branch Islamic Azad University Chalous Iran ARTICLE INFO ABSTRACT Article history Zirconia veneer bi-layered components are extensively used in dental restoration technology Received 6 April 2015 to improve resistance of tooth s surface from decay. The direction of the fracture propagation Accepted 20 July 2015 at the interface of zirconia and veneer is investigated in this paper. Finite element analysis is Available online performed on a bi-material four point bend specimen in different geometries and the fracture 23 July 2015 Keywords initiation angle is obtained using maximum tangential stress MTS criterion. The effect of Interface crack specimen geometry on the fracture initiation angle is discussed. Because an interface crack Zirconia may propagate through interface or kink into one of the materials some comments are given Veneer to determine under which condition interface de-bounding will be happened. Fracture initiation Finite element 2015 Growing Science Ltd. All rights reserved. 1. Introduction Restored teeth undergo complex loading conditions during their service life Kotousov et al. 2011 Chai et al. 2014 Kosyfaki amp Swain 2014 . Veneers which are made from dental porcelain or composite are widely used in dentistry to protect tooth s surface from decay. In dental prostheses the zirconia-based .

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