Effect of Silica Coating with Different Luting Cements on the Bond Strength of a Zirconia Based Ceramic

Abstract

Statement of the problem: Debonding is a common cause of failure in zirconia-basedrestorations. Despite the use of resin cements and surface treatments, the rate of success remainsto be questioned.Purpose: The purpose of this study was to evaluate the effect of surface treatment using asilica coating (Co-Jet) method with different luting cements on the shear bond strength to zirconiasamples. The hypothesis was that surface treatment with different luting cements will influence thebond strength at the ceramic-cement interface.Materials and Methods: In this study 30 zirconia samples were constructed and underwentsurface treatment using a silica coating method (Co-Jet system). Zirconia samples were then bondedto composite samples using different luting agents (Bifix QM, Panavia 2.0 and Multilink Automix).Samples underwent a thermocycling aging process before shear bond strength was tested.Results: The highest shear bond strength was recorded with the Panavia 2.0 group while thelowest was with the Bifix QM group.Conclusions: Within the limitations of this study, the use of a Co-Jet sand silica coating systemwith Panavia 2.0 showed superior bond strength than the other luting cements.