• Corpus ID: 208000852

The effects of airborne abrasion on micro-shear bond strength of resin cements on zirconia

@inproceedings{Pechinthorn2017TheEO,
  title={The effects of airborne abrasion on micro-shear bond strength of resin cements on zirconia},
  author={Thool Pechinthorn and Suppason Thitthaweerat and Pisol Senawongse},
  year={2017}
}

• Thool Pechinthorn, S. Thitthaweerat, P. Senawongse
• Published 2017
• Medicine, Materials Science

Objective: To evaluate the effect of various air abrasion treatments on micro-shear bond strength (μSBS) of zirconia bonded with different self-adhesive resin cements. Methods: Fully-sintered Y-TZP block specimens (IPS e.max® ZirCAD, Ivoclar Vivadent) were prepared to 5 types of surface treatments: no treatment [CON], air abrasion with different particle sizes and pressures: 50 μm & 1 bar [50.1], 50 μm & 3 bar [50.3], 110 μm & 1 bar [110.1], and 110 μm & 3 bar [110.3]. Then, the specimens were divided into two subgroups for further cementation with self-adhesive resin cements (Rely X Unicem Aplicap, 3M ESPE and Panavia SA, Kuraray). These cements were placed into tygon tubes over the zirconia specimens. After water storage at 37°C for 24 hours, micro-shear bond strength (μSBS) was measured. Failure mode was observed under SEM. Statistical analysis was performed by ANOVA and Tukey’s test (α = 0.05). Results: The air abrasion treatment with various particle sizes and pressures affected μSBS (p<0.05). The higher pressure and larger particle size improved zirconia bond strength. Panavia SA performed superiorly in μSBS than Rely X Unicem (p<0.05). Conclusions: The air abrasion with larger particle size (110 μm) & higher air pressure (3 bar) in combination with MDP-containing resin cement (Panavia SA) could create the optimal adhesion to zirconia.