Effect of Surface Treatment on Shear Bond Strength between Resin Cement and Ce-TZP/Al₂O₃

Table 2

Median shear bond strength in MPa to zirconia surfaces before and after thermocycling ().

Thermocycling	Zirconia block	No primer		Z-Prime Plus
		G-Cem	RelyX U200	G-Cem	RelyX U200
Before	Katana (Y-TZP)
	NanoZR (Ce-TZP/Al2O3)
After	Katana (Y-TZP)
	NanoZR (Ce-TZP/Al2O3)

Note: statistical differences are indicated by different superscript upper case letters (within a column for the same zirconia block and ageing process) or by different subscript lower case letters (within a row for the same surface treatment and aging process). Letters αβ in superscript reflect significant differences within a row for assessing effects of thermocycling within the same zirconia block.