IADR Abstract Archives
Bond Strength of 3Y,4Y,5Y-Zirconia
Objectives: Currently there are several different types of zirconia (3Y, 4Y, and 5Y). The aim of this study was to evaluate the effect of different types of zirconia on the resin-zirconia bond strength.
Methods: Zirconia specimens (3Y-BruxZir, Glidewell; 4Y-Katana STML; 5Y-BruxAnterior) were air-abraded (3 bar) with alumina sand (50µm) for 20 sec each, rinsed with water, and dried. Zirconia specimens were treated with a MDP-based zirconia primer (Z-Prime Plus, Bisco). The primer was air dried. Shear bond strength was tested using the notched-edge shear bond strength test method (ISO 29022:2013). Resin cement (Duolink Universal, Bisco) was placed on the zirconia surface and polymerized (light-polymerized for 40sec at 500mw/cm2). The specimens were then stored in water at 37°C for 24 hours and tested by universal testing machine (Instron, crosshead-speed 1mm/min). The data were analyzed statistically by one-way ANOVA and Student-t Test.
Results: Mean shear bond strengths (standard deviation, n=8) of resin cements on zirconia are shown in Table 1. Means with different letters are statistically different (p<0.05). Results show the shear bond strengths are not significantly different from each other (p>0.05)
Conclusions: The bond strengths on different types of zirconia are not different.
Methods: Zirconia specimens (3Y-BruxZir, Glidewell; 4Y-Katana STML; 5Y-BruxAnterior) were air-abraded (3 bar) with alumina sand (50µm) for 20 sec each, rinsed with water, and dried. Zirconia specimens were treated with a MDP-based zirconia primer (Z-Prime Plus, Bisco). The primer was air dried. Shear bond strength was tested using the notched-edge shear bond strength test method (ISO 29022:2013). Resin cement (Duolink Universal, Bisco) was placed on the zirconia surface and polymerized (light-polymerized for 40sec at 500mw/cm2). The specimens were then stored in water at 37°C for 24 hours and tested by universal testing machine (Instron, crosshead-speed 1mm/min). The data were analyzed statistically by one-way ANOVA and Student-t Test.
Results: Mean shear bond strengths (standard deviation, n=8) of resin cements on zirconia are shown in Table 1. Means with different letters are statistically different (p<0.05). Results show the shear bond strengths are not significantly different from each other (p>0.05)
Conclusions: The bond strengths on different types of zirconia are not different.