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KMID : 0362420090470020199
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Journal of Korean Academy of Prosthodontics
2009 Volume.47 No. 2 p.199 ~ p.205
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Effect of surface treatmet on the shear bond strength of a zirconia core to veneering ceramic
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Choi Mi-Sun
Kim Young-Su
Suh Kyu-Won
Ryu Jae-Jun
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Abstract
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Purpose: The purpose of this research was to evaluate the shear bond strength between zirconia core and veneer ceramic after surface treatment.
Material and Methods: Zirconia cores (N = 40, n = 10, 10 mm×10 mm×3 mm) were fabricated according to the manufacturers’ instructions and ultrasonically cleaned. The veneering ceramics (thickness 3 mm) were built and fired onto the zirconia core materials. Four groups of specimens with different surface treatment were prepared. Group I: without any pre-treatment, Group II: treated with sandblasting, Group III: treated with liner, Group IV: treated with sandblasting and liner. The shear bond strength was tested in a universal testing machine. Data were compared with an ANOVA and Scheffe′post hoc test (P = .05).
Results: The shear bond strength of group VI was significantly higher than the other groups.
Conclusion: Both mechanically and chemically treated simultaneously on zirconia core surface influenced the shear bond strength between the core and veneering ceramic in allceramic systems.
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KEYWORD
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all-ceramic, zirconia, shear bond strength, sandblasting, liner
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