title: Finite element stress analysis of a class I amalgam restoration subjected to setting and thermal expansion.
abstract: Stress analyses are presented for a second mandibular premolar with a class 1 amalgam restoration. The effects of amalgam setting and thermal expansions are examined. An axisymmetric representation of the structure is used and the analyses are carried out by the finite element method. Lined and unlined restorations are compared with regard to the principal stresses set up in the composite structures and also the patterns of deformation incurred. The effects of various enamel and dentin stiffness combinations are also considered.
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003723:Dental Amalgam; D003736:Dental Cavity Lining; D003743:Dental Enamel / Q000502:physiology; D003793:Dental Restoration, Permanent; D003804:Dentin / Q000502:physiology; D004548:Elasticity; D006801:Humans; D008954:Models, Biological; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D015036:Zinc Phosphate Cement
chemical_list: D015036:Zinc Phosphate Cement; D003723:Dental Amalgam