Influence of sandblasting and primer on shear bond strength of resin cement to zirconia

Abstract

PURPOSE: The aim of this study was to evaluate the effect of mechanical, chemical surface treatments on the zirconia‐to‐resin cement shear bond strength (SBS). MATERIALS AND METHODS: Eighty zirconia discs (Lava, 3M ESPE) and eighty zirconia/alumina composite (Zirace, Acucera) were embedded in an epoxy resin base. Zirconia discs were randomly divided in to four treatment groups (10 for each manufacturer): 50 microm Al2O3 sandblasting (S50),110 microm Al2O3 sandblasting (S110), 50 microm Al2O3 and primer (Z‐Prime Plus, Bisco Inc) (S50z) and 110 microm Al2O3 and primer (Z‐Prime Plus) (S110z). Two resin‐based luting cements (Calibra, Panavia F) were used to build 2 mm‐diameter cylinders onto the zirconia. After 24 h of storage in water, SBS testing was evaluate using a universal testing machine.Bond strength data were analyzed with one‐way ANOVA, two‐way ANOVA test and post hoc comparison was done using Tukey test (alpha=.05). RESULTS: Groups using primer showed the high shear bond strength. The groups that did not use primer presented lower shear bond strengths. CONCLUSION: The use of primer (Z‐Prime Plus, Bisco) had significantly higher shear bond strengths. [By kind permission, KoreaMed, Korean Association of Medical Journal Editors.]