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The Journal of Adhesive Dentistry

Edited by Prof. Dr. Roland Frankenberger, Prof. Bart Van Meerbeek

ISSN (print) 1461-5185 • ISSN (online) 1757-9988


September/October 2011
Volume 13 , Issue 5

Pages: 417 - 424
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Influence of Adhesive Properties on Resin-Dentin Bond Strength of One-step Self-etching Adhesives

Hass, Viviane / Folkuenig, Michele S. / Reis, Alessandra / Loguercio, Alessandro Dourado

Purpose: To evaluate the association between the resin-dentin bond strength (microtensile bond strength, μTBS) and the physical properties (ultimate tensile strength [UTS] and microhardness [VHN]) of the cured adhesive resin using five commercial one-step self-etching systems. Materials and Methods: Futurabond NR, Go, G Bond, 1-step All Bond SE and Clearfil S3 Bond were applied on flat superficial dentin surfaces. Each adhesive system was applied in five teeth. A resin buildup was then made. After 24 h, resin-dentin beams (0.9 mm2) were prepared to be tested immediately at 0.5 mm/min. For the UTS measurement, hourglass specimens were prepared with each adhesive system (n = 5) to be tested under tensile stress at 0.5 mm/min. The fractured specimens from the UTS test were taken to a Vickers microhardness tester (25 gf/20 s). μTBS, UTS, and VHN values were submitted to a one-way ANOVA and Tukey’s test (α = 0.05) for pairwise comparisons. Correlations between μTBS, UTS and VHN were analyzed using the Pearson product moment correlation test (α = 0.05). Results: Significantly higher μTBS values were observed for 1-step All Bond SE and Clearfil S3 Bond (p > 0.05). The adhesive All Bond SE showed the highest UTSmean among all systems (p < 0.05). The adhesives All Bond SE and G-Bond showed the highest microhardness mean among all systems (p < 0.05). A strong (r = 0.93) and significant (p = 0.021) correlation was only found between the μTBS and UTS values. Conclusion: The ultimate tensile strength of one-step self-etching systems correlates with the resin-dentin bond strength values.

Keywords: resin-dentin bond strength, ultimate tensile strength, microhardness, adhesive systems, one-step self-etching, correlation

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