Abstract
This study evaluated the effect of different thickness of disk-shaped specimens on the push-out bond strength test. Eighteen lower bovine teeth were sectioned (20 mm) and prepared (15 mm) with the same post system drill (Light Post® #1, Schaumburg, IL, Bisco, USA). The apical third of each specimen was embedded in a plastic matrix filled with an acrylic resin (Dencrilay™, Dencril, Sao Paulo, Brazil). The posts were cleaned with alcohol, silanated (ProSil®, FGM, Joenville, SC, Brazil) and cemented with the RelyX™ U100 (3 M ESPE, St. Paul, MN, USA). Each specimen was sectioned into three pieces of differing thicknesses (1, 2, and 4 mm). These disk-samples were allocated into 3 groups (n = 18) and subjected to push-out testing. One-way ANOVA showed no influence of the specimen thickness on the results (p = 0.842). No correlation was observed between thickness and push-out bond strength (Pearson Correlation, r2 = 0.0688; P = 0.6209). The push-out bond strength test was not affected by the thickness of the disk-specimens.
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