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KMID : 0362420100480040251
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Journal of Korean Academy of Prosthodontics
2010 Volume.48 No. 4 p.251 ~ p.258
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The influence of surface conditioning on the shear bond strength of self-adhesive resin cement to zirconia ceramics
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Jung Ji-Hye
Jung Seung-Hyun
Cho Hye-Won
Kim Yu-Lee
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Abstract
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Purpose:To evaluate the effect of surface conditioning on the shear bond strength of zirconium-oxide ceramic to 4 luting agents.
Material and Methods : A total of 120 disk-shaped zirconium-oxide ceramic blocks (3Y-TZP, Kyoritsu, Japan) were treated as follows: (1) Sandblasting with 110 μm aluminum-oxide (Al2O3) particles; (2) tribochemical silica coating (Rocatec) using 110 μm Al2O3 particles modified by silica; (3) no treatment. Then zirconium-oxide ceramic blocks bonded with 4 luting cements (RelyX luting (3M ESPE), Maxcem (Kerr), Nexus3 (Kerr), Rely X Unicem (3M ESPE)). Each group was tested in shear bond strengths by UTM. A 1-way analysis of variance and 2-way analysis of variance was used to analyze the data (α = .05).
Results: RelyX unicem in combination tribochemical silica-coating produced a highest bond strength (P < .05). Air abrasion group and Rocatec treatment groups resulted in significantly higher than no conditioning group (P < .05). RelyX Luting groups showed lower bond strength than other groups. There were significant differences among groups (P < .05).
Conclusion: Within the limitation of this study, RelyX Unicem cement provided the highest bond strength and Rocatec treatment enhanced the bond strength.
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KEYWORD
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Surface conditioning, Zirconia, Resin cement, Shear bond strength
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