Shear Bond Strength of Resin Cement to multiple substrates

Objectives: To measure and compare the shear bond strength of a self-adhesive dual cured resin cement containing a unique silane and a 10-MDP adhesive monomer to multiple substrates.
Methods: Specimens made from type IV gold, nickel chrome alloy, lithium disilicate, feldspathetic porcelain, and 3Y zirconia were cut into uniform square specimens. All bonding surfaces were finished with a series of abrasive discs ending with 320 grit. The specimens were randomly divided into groups (n=10) . To half the e.max and porcelain specimens silane was applied to the bonding surface and dried. To half the zirconia and metal specimens, Clearfil Universal Bond Quick was applied. To the other half of these groups no primer was applied. To all specimens Panavia SA Universal Cement was injected into a clear cylinder and applied to the bonding surfaces and light cured for 20 sec from 3 sides (3M ESPE/Elipar Deep Cure/1020mW/cm2). The specimens were stored (24hrs/distilled water/37°C), placed in a fixture in Instron-5565 and loaded to failure in shear (crosshead speed/1mm/min). Shear bond strength was calculated from the peak load at failure and the bonding area. Data analyzed (ANOVA and Tukey/Kramer/p=0.05).
Results: See table (n=10)
Conclusions: This in vitro study demonstrated that shear bond strength was not affected when a primer was used on the ceramic or metal alloys. This cement reduces the procedure for bonding to ceramic by eliminating primers.