Effect of Surface Treatment with Alkaline Agents at Two Different Temperatures on Microshear Bond Strength of Zirconia to Composite Resin

Table 1

Composition of materials used in this study.

Material	Lot number	Symbol	pH	Manufacturer	Composition
Zirconium dioxide		DDBio ZX2		Dental Direkt, 106-108, 32139 Spenge, Germany	ZrO2 + HfO2+Y2O3 (≥99), Y2O3(<6), Al2O3, (≤0.15), other oxides (<1.0)
Filtek™ Z250 Universal Restorative	9456914	Z250		3 M ESPE, MN, USA	Bis-GMA, UDMA, Bis-EMA, filler (0.01-3.5 μm)
G-Premio Bond	2212081	GP	1.5	GC DENTAL PRODUCTS CORP, Japan	10-MDP, 4-Methacryloxyethyl trimellitic anhydride, dimethacrylate monomer, distilled water, acetone, photo initiators, fine silica powder
Zirconium hydroxide			12	sigma, Germany	Zr(OH)4
Sodium hydroxide			12	Merck, Germany	NaOH