Résumé
AIM: To evaluate the microtensile bond strength of Single Bond, AdheSE, and Fuji Bond LC to human dentin. Fifteen non-carious third molars were selected for the study. The teeth were randomly divided into three groups of five teeth each. Each group was given a different bonding treatment. Group I was treated with Single Bond (3M, ESPE), group II with AdheSE (Ivoclar, Vivadent), and group III was treated with Fuji Bond LC (GC America). A T-band metal matrix was placed and composite resin bonded on to the tooth surface using appropriate bonding agents. The composite resin was packed in increments and light cured. Each tooth was sectioned to obtain 1 mm x 1 mm beams of dentin-resin samples. Tensile bond testing was done using a universal testing machine (Instron) at a cross-head speed of 0.5 mm/min. RESULTS: The mean bond strength of Single Bond (35.5 MPa) was significantly higher than that of AdheSE (32.8 MPa) and Fuji Bond LC (32.6 MPa). The difference between the microtensile bond strength values of AdheSE and Fuji Bond LC was statistically insignificant. INFERENCE: Though the bond strength of AdheSE and Fuji Bond LC was above 30 MPa, it was less than that of Single Bond as evaluated by testing of microtensile bond strength.