J Adv Prosthodont.  2013 May;5(2):104-109. 10.4047/jap.2013.5.2.104.

Effect of silane activation on shear bond strength of fiber-reinforced composite post to resin cement

• Kim HD
• Lee JH
• Ahn KM
• Kim HS
• Cha HS

• KMID: 2284748
• DOI: http://doi.org/10.4047/jap.2013.5.2.104

Abstract

PURPOSE
Among the surface treatment methods suggested to enhance the adhesion of resin cement to fiber-reinforced composite posts, conflicting results have been obtained with silanization. In this study, the effects of silanization, heat activation after silanization, on the bond strength between fiber-reinforced composite post and resin cement were determined.
MATERIALS AND METHODS
Six groups (n=7) were established to evaluate two types of fiber post (FRC Postec Plus, D.T. Light Post) and three surface treatments (no treatment; air drying; drying at 38degrees C). Every specimen were bonded with dual-curing resin cement (Variolink N) and stored in distilled water for 24 hours at 37degrees C. Shear-bond strength (MPa) between the fiber post and the resin cement were measured using universal testing device. The data were analyzed with 1-way ANOVA and by multiple comparisons according to Tukey's HSD (alpha=0.05). The effect of surface treatment, fiber post type, and the interactions between these two factors were analyzed using 2-way ANOVA and independent sample T-tests.
RESULTS
Silanization of the FRC Postec Plus significantly increased bond strength compared with the respective non-treated control, whereas no effect was determined for the D.T. Light Post. Heat drying the silane coupling agent on to the fiber-reinforced post did not significantly improve bond strength compared to air-syringe drying.
CONCLUSION
The bond strength between the fiber-reinforced post and the resin cement was significantly increased with silanization in regards to the FRC Postec Plus post. Bond strength was not significantly improved by heat activation of the silane coupling agent.

Keyword

Post and core technique; Silane; Resin cements; Shear strength; Heat treatment

MeSH Terms

Collodion
Hot Temperature
Light
Post and Core Technique
Resin Cements
Shear Strength
Water
Collodion
Resin Cements
Water

Figure

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  Fig. 1 Schematic drawing of specimen preparation for shear bond strength test. A: cross-sectional view for shear bond test, B: total view of mounted specimen.

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  Fig. 2 Schematic presentation of shear bond test. A: the mounting specimen and loading, B: failure.

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  Fig. 3 Shear bond strength of the FRC Postec Plus and the D.T. Light Post as a function of the surface treatment. *: Mean values were significantly different by 1-way ANOVA (P<.05).

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