Comparison of different adhesive techniques using a universal adhesive system

In order to simplify the technique while maintaining its effective clinical performance, as well as its adhesive properties, universal adhesive systems are constantly launched in the market. Thus, the objective of this study was to compare the presence or absence of moisture in the adhesion technique using a universal adhesive system, the Single Bond Universal (3M ESPE). There were selected forty-five human molars with indications for exodontia that were divided into three experimental groups: Single Bond Universal (3M ESPE) with and without moisture in the dentin; Scotchbond Multi-Bottles (3M ESPE) conventional technique (control). The characterization methods used were: microshear and scanning electron microscopy. Statistical analysis of variance analysis (single-factor ANOVA) and Tukey’s multiple comparison, global significance level of 5% were used. It was observed through the micro-test that there were no statistically significant differences between the groups tested. Scanning electron microscopy analysis showed that the most frequent failure mode was the adhesive type (91%), followed by the mixed type fracture (8%) and the cohesive type (1%). It was concluded through this study that, regardless of the moisture (present or absent), the Single Bond Universal adhesive system showed bond strength similar to the conventional adhesive.