Methods: Seventy extracted premolars were randomly assigned to seven groups (n=10). In groups 1-5 which Silorane composite resin were placed on prepared dentin following application of the adhesives, the bonding strategies were as followes: Group 1: OptiBond Solo Plus (Opt; kerr), Group 2: SE Bond (SE; kurary), Group 3: silorane System Adhesive(LS primer & bond) (SSA; 3M ESPE), Group 4: OptiBond Solo Plus + LS bond of SSA (Opt LS), Group 5: SE Bond + LS bond of SSA (SE LS). In groups 6&7 as a control, Point 4 composite resin were used after applying OptiBond Solo Plus (Opt Po) and SE Bond (SE Po), respectively. After thermal cycling (1000 cycles at 5 and 55° C ), micro-shear bond test was carried out to measure the bond strengths. The results were analyzed using two-way and one-way ANOVA and Tukey's post-hoc analysis (α = 0.05).
Results: There were no significant differences between two types of composites (P = 0.187), between bonding group (P = 0.06) and between composite and bonding (P = 0.894). there were significant difference among groups of silorane composites (P = 0.045) and Tukey test showed there were significant difference between Group 4 and 5. (P = 0.03)
Conclusions: The application of etch & rinse and self-etch methacrylate based adhesives with and without using of a hydrophobic resin coating produces acceptable bond strengths with silorane composite resin.
Keywords: Bond Strength, Composites, Dental materials and Dentin bonding agents
See more of: Dental Materials 1: Adhesion - Bond Strength Testing and Mechanisms