TENSILE BOND STRENGTH OF A COMPOSITE RESIN CEMENT FOR BONDED PROSTHESIS TO VARIOUS DENTAL ALLOYS

The development of composite resin cements that chemically bond to den tal alloys has improved the construction of resin-bonded prostheses. C omposite resins can be selected for various situations, but specific c linical situations may require different alloys. This study evaluated the ability of a composite resin cement to bond to various dental allo ys of different compositions. Ten pairs of disks for each alloy (two N iCr, two NiCrBe, one CuAl, one gold type IV, and one gold for metal ce ramic) were bonded to a composite resin cement after air abrasion was performed with aluminum oxide. The disks were then rinsed in tap water and were ultrasonically cleaned in distilled water for 2 minutes. The tensile tests exhibited greater values for alloys ultrasonically clea ned, and the best results were recorded by NiCr and NiCrBe alloys.