Method: Twenty four extracted bovine teeth had their buccal coronal surfaces coarsely grounded until dentin and were sectioned in two equal parts to be used with the same adhesive. Each part of the tooth received a different application manner. The tooth surfaces were grounded until 600-grit silicon carbide paper under tap water and the teeth were randomly divided into 2 adhesive groups with two application modes (n=12): G1: Ambar(FGM) immediately photocured (A0); G2 Ambar photocured 30 seconds after application (A30); G3: Tetric N-Bond (Ivoclar/Vivadent) immediately photocured (T0) and G4: Tetric N-Bond photocured 30 seconds after application (T30). Cylinders of a flowable composite resin Opallis flow, shade A1 (FGM), with 1,4mm diameter size were bonded to the photocured adhesives. The specimens were stored at 24°C for 24h and then subjected to the shear bond strength test in a INSTRON Universal Testing Machine (model 4444), at a cross-head speed rate of 0.5mm/min. One-way ANOVA showed no significant differences between the group
Result: The mean shear bond strength (SBS) for the tested groups was: 9,32MPa (A0), 9,51MPa (A30), 8,42MPa (T0), and 10,07MPa (T30).
Conclusion: The adhesives systems tested showed similar bond strength to bovine dentin and the application mode did not influenced in bond strength results.