J Korean Acad Prosthodont.  2009 Apr;47(2):199-205. 10.4047/jkap.2009.47.2.199.

Effect of surface treatmet on the shear bond strength of a zirconia core to veneering ceramic

• Choi MS
• Kim YS
• Suh KW
• Ryu JJ

• KMID: 2195617
• DOI: http://doi.org/10.4047/jkap.2009.47.2.199

Abstract

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 x 10 mm x 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 all-ceramic systems.

Keyword

all-ceramic; zirconia; shear bond strength; sandblasting; liner

MeSH Terms

Ceramics
Collodion
Fires
Zirconium
Ceramics
Collodion
Zirconium

Figure

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  Fig. 1. Specimens of sintered zirconia.

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  Fig. 2. Test scheme.

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  Fig. 3. Prepared specimen.

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  Fig. 4. Shear bond strength test in Universal testing machine.

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  Fig. 5. Mean and standard deviation of shear bond strength.

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  Fig. 6. View of a debonded veneered ceramic specimen. Failure occurred in porcelain and core veneer interface.

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