Yilmaz Savas, TubaAykent, Filiz2020-03-262020-03-2620171461-51851757-9988https://dx.doi.org/10.3290/j.jad.a39595https://hdl.handle.net/20.500.12395/35026Purpose: To evaluate shear (SBS) and microtensile (mu TBS) bond strengths of zirconia cores veneered using different fabrication techniques. Materials and Methods: Seventy-five IPS e.max ZirCAD plates were fabricated and divided into three groups according to the following veneering techniques: layering, pressing, and CAD-on. The specimens of the layering group were veneered with IPS e.max Ceram, and the specimens of the pressing group were veneered with IPS e. max Zir-Press. Veneering ceramics in the CAD-on group were milled from IPS e.max CAD, fused with the core by using a glass-fusion ceramic, and then crystallized. Bond strength tests were performed using a universal testing machine at a crosshead speed of 0.5 mm/min for the SBS test and 1 mm/min for the mu TBS test. Mean SBS and mu TBS (MPa) were analyzed with one-way ANOVA and Tukey's HSD test (p < 0.05). Results: Significant differences in SBS were observed between the groups (p < 0.05). The mean SBS for the CAD-on group was significantly higher (31.89 +/- 5.83 MPa) than those of the layering (14.27 +/- 4.45 MPa) and pressing (12.23 +/- 3.04 MPa) groups. However, the mean mu TBS of the CAD-on (30.41 +/- 8.64 MPa), layering (21.71 +/- 3.40 MPa) and pressing (20.74 +/- 6.36 MPa) groups were not statistically significant (p > 0.05). Conclusion: The CAD-on technique showed the highest shear bond strengths of the tested groups, and most of the specimens failed cohesively instead of failing at the adhesive interface.en10.3290/j.jad.a39595info:eu-repo/semantics/closedAccesszirconiaveneering techniquesCAD-onall-ceramicsbond strengthArticle19650751529255812Q1WOS:000425917900007Q2