Chemical retention of composite resin to metal

Three dental adhesives were used to chemically bond three dental veneering resins to a nickel-chromium alloy and a 52% gold alloy. As a control, all three veneering resins were applied directly to the aluminum-oxide-abraded surface without using an adhesive. The various combinations were subjected to a tensile load, and the tensile bond strength and failure location were recorded. The results indicated that the adhesives provided a statistically significant bond between the resin and the alloys.