Bond Strength between Zirconia Y-TZP and Resin Cements: Evaluation of Surface Treatment, Cure Mode, and Failure Types

Abstract

Purpose nbsp The aim of this study was to evaluate the effect of the type of curing and surface treatment with universal adhesive containing methacryloyloxydecyl dihydrogen phosphate MDP and sandblasting with aluminum oxide particles mu m on the bond strength between two resin cements RelyX Ultimate and U and yttria stabilized zirconia Y TZP Materials and methods nbsp Zirconia cylinders times times mm were divided into two groups according to the type of cement for dual and chemical curing Each group was divided into four subgroups n according to the surface treatment adhesive and sandblasting adhesive only sandblasting only and control no treatment After cementation specimens underwent shear bond strength testing in a universal testing machine A stereomicroscope was used to analyze the failure pattern Data were statistically analyzed considering p lt Results For both dual cure cements the highest values were found for the adhesive and sandblasting treatment group The results for dual curing were statistically different from the results for chemical curing Adhesive failure prevailed with both cements Conclusion The use of adhesive with MDP can be a favorable alternative to improve the bond strength between resin cements and zirconia Y TZP Sandblasting with aluminum oxide particles is not a key factor in improving bond strength