الفهرس 
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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.