A calculation of stress distribution in metal-porcelain crowns by using three-dimensional finite element method

Aykul H., Toparli M., Dalkiz M.

Journal of Oral Rehabilitation, vol.29, no.4, pp.381-386, 2002 (SCI-Expanded, Scopus) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 29 Issue: 4
  • Publication Date: 2002
  • Doi Number: 10.1046/j.1365-2842.2002.00826.x
  • Journal Name: Journal of Oral Rehabilitation
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.381-386
  • Keywords: metal-porcelain crowns, finite element, stress distribution, mastication force
  • Manisa Celal Bayar University Affiliated: Yes

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.