SHEAR BOND STRENGTH OF COMPOSITE RESIN TO MICROETCHED METAL WITH 5 NEWER GENERATION BONDING AGENTS

The purpose of this study was to determine the shear bond strength of a hybrid composite resin to a nickel-chrome-beryllium (Ni-Cr-Be) alloy , using five of the newer-generation bonding agents: Optibond, All-Bon d 2, Prisma Universal Bond 3, Restobond 4, and Amalgambond Plus with H PA. For each bonding system 10 samples of metal were microetched with 50-micron aluminum oxide prior to the placement of the bonding agent a nd resin. The shear bond strength was tested, and the results showed t hat Amalgambond Plus with HPA developed the strongest bond at 18.81 +/ - 3.924 MPa, followed by All-Bond 2 at 14.33 +/- 3.408, Optibond at 13 .97 +/- 1.508, Prisma Universal Bond 3 at 12.51 +/- 1.845, and Restobo nd 4 at 10.29 +/- 1.407.