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Objective. To evaluate the dentin-resin bond´s resistance (DRBR) of the adhesives Optibond FL (OFL), Adper Single Bond 2 (ASB2) and Single Bond Universal (SBU) with its self-engraving possibility, in three different times of application. Methods. Experimental, comparative and crossectional in vitro study. We used nine human molars, obtaining 135 specimens of 1 mm2 approximately, forming nine study groups of 15 specimens for each group. The DRBR was measured through the Microtunsion test at a tensile force with an acceleration of 0.5mm/min until a fracture.The contrast of difference hypotheses was performed using the one-factor ANOVA test and Tukey's multiple comparisons, both at a confidence level of 95%. Results. After 10 seconds, significant differences were found between the OFL adhesive systems (25.78 ± 5.98 MPa) vs ASB2 (from 14.02 ± 3.06 MPa) at p<0.001, as well as between OF...

Objective. To evaluate the dentin-resin bond´s resistance (DRBR) of the adhesives Optibond FL (OFL), Adper Single Bond 2 (ASB2) and Single Bond Universal (SBU) with its self-engraving possibility, in three different times of application. Methods. Experimental, comparative and crossectional in vitro study. We used nine human molars, obtaining 135 specimens of 1 mm2 approximately, forming nine study groups of 15 specimens for each group. The DRBR was measured through the Microtunsion test at a tensile force with an acceleration of 0.5mm/min until a fracture.The contrast of difference hypotheses was performed using the one-factor ANOVA test and Tukey's multiple comparisons, both at a confidence level of 95%. Results. After 10 seconds, significant differences were found between the OFL adhesive systems (25.78 ± 5.98 MPa) vs ASB2 (from 14.02 ± 3.06 MPa) at p<0.001, as well as between OF...