Abstract
Objective:
The purpose of this study was to evaluate the effect of different surface treatments on bond strength between In-Ceram Zirconia ceramic and Panavia Fluoro Cement.
Background Data:
Although several surface treatments have been used on In-Ceram Zirconia, no study has been conducted to investigate the effect of the Nd:YAG laser.
Materials and Methods:
Nine In-Ceram Zirconia blocks (10 × 10 × 6 mm) received three different surface treatments (n = 3 per group): group 1—Al2O3 sandblasting + silane; group 2—Al2O3 sandblasting + Rocatec Plus + silane; and group 3—Al2O3 sandblasting + Nd:YAG laser + silane. Resin cement was applied and light-cured, followed by the application of composite resin. The blocks were sectioned to obtain square rods with a cross-sectional dimension of 1.0 mm2 (n = 12 per group). Microtensile bond strength (μTBS) was recorded using a universal testing machine at a cross-head speed of 0.5 mm/min and expressed in megapascals (MPa).
Results:
All groups yielded statistically significantly different μTBS mean values: group 1 (11.81 ± 3.12 MPa); group 2 (15.75 ± 4.45 MPa); group 3 (18.70 ± 5.14 MPa) (ANOVA and Tukey's test; α = 0.05).
Conclusion:
Nd:YAG laser irradiation is an effective surface treatment for bonding between In-Ceram Zirconia and Panavia Fluoro Cement.