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The aim of this study was to analyze the bond strength of total-etch and self-etch adhesive systems to dentin of primary and permanent teeth. Methods: Thirty sound naturally exfoliated primary molars deciduous teeth (DT) and thirty sound permanent bicuspids permanent teeth (PT) were randomly divided into six groups (n=10 per group) according to two commercial adhesive systems: Adper Single Bond 2; 3M ESPE (Total-etch) and Adper Easy Bond; 3M ESPE (selfetch and total-etch). Specimens submitted to cyclic loading in a universal Instron testing machine. Bond strength values (MPa) were analyzed by ANOVA test and Duncan post hoc test (a=0.05). Results: Mean values were higher in PT compared to DT. In deciduous teeth, no significantly differences observed. Total etch AdperTM Single Bond 2 showed significantly higher bond strength than self-etch AdperTM with additional acid etching in PT (p=0.031). Conclusion: Our findings suggest that the highest bond strength was found in dentin tissue of PT with total etch AdperTM employing the adhesive the Single Bond 2 of one step self-etch.

Comparative Evaluation of Bond Strength of Self-Etching and Total Etch Dental Adhesive Systems to Dentin of Deciduous and Permanent Teeth