Degree of conversion and cohesive strength of conventional dual resin and self-adhesive cements by using of different forms of activation

The aim of this study was to evaluate the degree conversion (DC) and cohesive strength (CS) two conventional resin cements a self-adhesive cement using different forms activation. Two dual (Variolink II RelyX ARC) were polymerized in three ways activation, namely Chemically Activated (CA), Light with Interposition disc (LI) Light-Activated (L). DC evaluated Fourier Transformed Infrared Spectroscopy - FTIR (Spectrum 100). In CS test, samples tested until fracture universal testing machine (Instron 4411). mean values obtained tests two-way analysis variance (ANOVA) (cement activation) Tukey test (p≤0.05). Irrespective activation mode, ARC showed highest values, U200, lowest Variolink intermediate values. Group L always had higher for than group CA. Among cements, irrespective there no differences chemical mode led lower U200 however, relation CS, differences.