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, cilt.29, sa.4, ss.381-386, 2002 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 29 Sayı: 4
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1046/j.1365-2842.2002.00826.x
  • Dergi Adı: JOURNAL OF ORAL REHABILITATION
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.381-386
  • Anahtar Kelimeler: metal-porcelain crowns, finite element, stress distribution, mastication force
  • Dokuz Eylül Üniversitesi Adresli: Hayır

Özet

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 45degrees 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.