Effects of cement bases on the stresses in amalgam restorations.
A computerized dental model was used to study the stress induced in a Class 1 amalgam restoration when supported by bases of varying materials and thickness. Under the same load, the maximum tensile stresses and deflections in the amalgam restoration increased at least threefold with a zinc oxide-eugenol base as compared with a ZnPO4 cement base.
D003723:Dental Amalgam / Q000592:standards; D003737:Dental Cavity Preparation; D003738:Dental Cements / Q000592:standards; D003743:Dental Enamel; D003793:Dental Restoration, Permanent / Q000592:standards; D003799:Dental Stress Analysis; D003804:Dentin; D004548:Elasticity; D008954:Models, Biological; D015035:Zinc Oxide-Eugenol Cement / Q000592:standards; D015036:Zinc Phosphate Cement / Q000592:standards
D003738:Dental Cements; D015035:Zinc Oxide-Eugenol Cement; D015036:Zinc Phosphate Cement; D003723:Dental Amalgam