The influence of air abrasion and Er,Cr:YSGG laser on shear bond strength of cubic zirconia to two resin cement types.

Aim : To examine how various pre-sintering surface treatments affect the shear bond strength (SBS) between cubic zirconia and two types of resin cement. Materials and methods: Sixty cubic zirconia plates were Separated into three groups based on the pre-sintering surface treatment: Group A: air abraded using alumina particles; Group S: air abraded using silica-coated alumina particles and Group L: laser treated using Er,Cr,YSGG laser. All plates were sintered according to the manufacturer’s instructions. Phosphate-containing resin cement (subgroup P) was bonded to half of the plates, while conventional composite resin cement (subgroup C) was bonded to the other half. The strength of the shear bond was determined using a universal testing machine, and the failure mode was noticed using a digital microscope. Statistical analysis: A two-way ANOVA was utilised, followed by Tukey’s post hoc test. Results: Only surface treatment had a significant effect on bond strength (p 0.001). The highest value was found in Group A (6.680.70) Mpa, followed by Group S (4.820.73) Mpa, while the lowest value was found in Group L (0.570.08) Mpa. Conclusions: Air abrasion of pre-sintered cubic zirconia using alumina provided the highest bond strength to both types of resin cement.