Shear Bond Strengths between Three Different Yttria-Stabilized Zirconia Dental Materials and Veneering Ceramic and Their Susceptibility to Autoclave Induced Low-Temperature Degradation

Table 1

Zirconia systems evaluated in this study.

Name	Composition	Manufacturer
() Cercon	ZrO2 (>93%), Y2O3 (4.95–5.35%), HfO2 (0.8%), Al2O3 (0.15–0.35%), trace elements (SiO2, NaO2, Fe2O3)	Cercon DeguDent, Germany
() Ziecon	ZrO2 (94–96%), Y2O3 (4.05–6.0%), HfO2 (1-2%), Al2O3 (0–0.1%), trace elements (SiO2, NaO2, Fe2O3)	Jyoti Ceramics, Nashik, India
() Upcera	ZrO2 + HfO2 + Y2O3 (99.6 wt%), Al2O3 (<0.5 wt%), SiO2, NaO2, Fe2O3 (<0.2%)	Upcera, Shenzhen, China