J Korean Acad Prosthodont.  2010 Oct;48(4):251-258. 10.4047/jkap.2010.48.4.251.

The influence of surface conditioning on the shear bond strength of self-adhesive resin cement to zirconia ceramics

• Jung JH
• Jung SH
• Cho HW
• Kim YL

• KMID: 2195540
• DOI: http://doi.org/10.4047/jkap.2010.48.4.251

Abstract

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 microm aluminum-oxide (Al2O3) particles; (2) tribochemical silica coating (Rocatec) using 110 microm 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 (alpha = .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.

Keyword

Surface conditioning; Zirconia; Resin cement; Shear bond strength

MeSH Terms

Ceramics
Dental Cements
Dentin-Bonding Agents
Resin Cements
Silicon Dioxide
Zirconium
Ceramics
Dental Cements
Dentin-Bonding Agents
Resin Cements
Silicon Dioxide
Zirconium

Figure

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  Fig. 1. Disk-shaped zirconia specimen.

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  Fig. 2. Bonding resin cements to zirconia specimen.

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  Fig. 3. Completed specimen.

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  Fig. 4. Schematic diagram of shear bond strength testing.

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  Fig. 5. Shear bond testing assembly on UTM.

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  Fig. 6. Shear bond strength of 12 groups.

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  Fig. 7. Failure patterns. A: Adhesive failure, B: Mixed failure, C: Cohesive failure.

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  Fig. 8. SEM pictures of Zirconia ceramic. A: Adhesive failure (magnification ×500), B: Mixed failure (magnification ×100), C: Cohesive failure (magnification ×100).

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  Fig. 9. SEM pictures of Zirconia ceramic (magnification ×1,000). A: Grinding with 50 μ m disk, B: Airborne particle abrasion with 110 μ m alumina, C: Rocatec conditioning.

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