The influence of ceramic surface treatments on the microtensile bond strength of resin cements to Y-TZP ceramic
Park Mi-Hee , Ju-Mi Park , Seung-Geun Ahn , Kwang-Yeob Song , Tae-Sung Bae , Jae-Youn Jung , Wang Xinyu
Journal of Wuhan University of Technology Materials Science Edition ›› 2010, Vol. 25 ›› Issue (6) : 996 -1000.
The influence of ceramic surface treatments on the microtensile bond strength of resin cements to Y-TZP ceramic
The effects of surface conditioning methods on the microtensile bond strength of Y-TZP ceramic were studied based on airborne particle abrasion and resin cements. Eight square-shaped (ϕ12 mm×5 mm high) Y-TZP ceramic were studied blocks (LAVA™, 3M ESPE, USA) and flat occlusal dentin blocks were fabricated, pre-treated(airborne abrasion with 125μm Al2O3 particles, tribochemical silica coating with 110 μm Al2O3 particles modified by silica oxide), and bonded to each other using resin cements(Panavia F 2.0, RelyX Unicem). Thereafter the trilayer specimens were cut into microbar specimens with a bonding area of approximately 1.0±0.1 mm2 and then microtensile bond strength tests were performed. The Y-TZP ceramic following airborne particle abrasion with 125μm Al2O3 and silicoating, the surface roughness of Y-TZP and its surface silica content were confirmed to increase. Overall, the Y-TZP ceramic surface treatment with a tribochemical silica coating showed the highest microtensile bond strength of the phosphate monomerbased resin cement to Y-TZP ceramic(mean MPa= 18.11±0.27(Panavia F 2.0), 17.45±0.39(RelyX Unicem). In cases in which a silica coating was applied, there was no significant difference in the bonding strength depending on resin cements (P>0.05).
Y-TZP ceramic / resin cement / microtensile bond strength
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