A calculation of stress distribution in metal-porcelain crowns by using three-dimensional finite element method
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2002
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Abstract
The objective of this study was to calculate stress distribution in a maxillary second premolar tooth which occurred by the mastication force. The tooth model was crowned with Au-Pd alloy, Ni-Cr alloy and porcelain. A load of 450 N, at an angle of 45° to the longitudinal axis was applied on the occlusal margin of the crown tooth. The tooth was assumed isotropic, homogenous, elastic and unsymmetrical. This numerical study was carried out using three-dimensional finite element models and calculation programs were prepared by the authors using FORTRAN 77. The distribution of compressive, tensile and shear stress were plotted for the dentine, dentine-metal and metal-porcelain interfaces. The highest stress values were observed when Ni-Cr alloy and porcelain was used. © 2002 Blackwell Science Ltd.
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Bicuspid , Chromium Alloys , Compressive Strength , Crowns , Dental Stress Analysis , Dentin , Finite Element Analysis , Gold Alloys , Humans , Mastication , Maxilla , Metal Ceramic Alloys , Stress, Mechanical , Tensile Strength , alloy , chromium derivative , gold alloy , article , compressive strength , dental care , dentin , finite element analysis , human , mastication , maxilla , mechanical stress , methodology , physiology , premolar tooth , tensile strength , tooth crown