الفهرس | Only 14 pages are availabe for public view |
Abstract Aim: To investigate the shear bond strength of glass ceramic to translucent zirconia using press-on versus layering technique. Methodology: Twenty-four Samples of translucent zirconia were formed from partially sintered zirconia discs that were fully sintered as per the manufacturer’s instructions for standardized dimensions. All samples were divided into 2 groups based on the veneering technique and veneered using fluoro-apatite glass ceramic. group A: The Free-hand layering technique. group B: The presson veneering technique. All steps were done following the manufacturer’s instructions. Shear bond strength testing was performed using a universal testing device. The force recorded in Newton divided by the total surface area for each sample, the shear bond strength measured in MPa. Results: Using an independent t-test, a comparison between them was made, and it was found that group A (Layering technique) (9.03 ± 2.64 Mpa) was significantly lower than group B (Press-on technique) (11.2 ± 1.17 Mpa) with the mean difference (2.17) as P=0.02*. Conclusion: The press-on veneering method of translucent zirconia was much higher SBS than the layering method. Moreover, the press-on technique formed a chemical bond between glass ceramic and Translucent zirconia. Keywords: Translucent Zirconia, Glass ceramics, Veneering techniques, Shear bond strength test. |