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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 - J Adv Prosthodont (2013)

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: Division of Prosthodontics, Department of Dentistry, College of Medicine, University of Ulsan, Asan Medical Center, Seoul, Republic of Korea.

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 38℃). Every specimen were bonded with dual-curing resin cement (Variolink N) and stored in distilled water for 24 hours at 37℃. 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 (α=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.

No MeSH data available.


Related in: MedlinePlus

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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Figure 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.

Mentions: The posts were embedded perpendicularly with unsaturated polyester resin (Formica Polycoat; Aekyung Chemical Co., Seoul, Korea) in the mold of a metal ring with a diameter of 15 mm and a length of 23 mm. By incremental pouring of the unsaturated polyester resin, the top surface of fiber posts were positioned at an even level with the top surface of the resin blocks (Fig. 1). The exposed surface of the post was cleaned using phosphoric acid (Total Etch; Ivoclar Vivadent AG, Schaan, Liechtenstein), rinsed with distilled water, and dried as recommended by the respective manufacturers.7


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 - J Adv Prosthodont (2013)

Schematic drawing of specimen preparation for shear bond strength test. A: cross-sectional view for shear bond test, B: total view of mounted specimen.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3675281&req=5

Figure 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.
Mentions: The posts were embedded perpendicularly with unsaturated polyester resin (Formica Polycoat; Aekyung Chemical Co., Seoul, Korea) in the mold of a metal ring with a diameter of 15 mm and a length of 23 mm. By incremental pouring of the unsaturated polyester resin, the top surface of fiber posts were positioned at an even level with the top surface of the resin blocks (Fig. 1). The exposed surface of the post was cleaned using phosphoric acid (Total Etch; Ivoclar Vivadent AG, Schaan, Liechtenstein), rinsed with distilled water, and dried as recommended by the respective manufacturers.7

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: Division of Prosthodontics, Department of Dentistry, College of Medicine, University of Ulsan, Asan Medical Center, Seoul, Republic of Korea.

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 38℃). Every specimen were bonded with dual-curing resin cement (Variolink N) and stored in distilled water for 24 hours at 37℃. 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 (α=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.

No MeSH data available.


Related in: MedlinePlus