Abstract
The effects of surfactants dissolved in MMA, Triton X-100, Span 85 and Tween 20, on the bonding of MMA-TBB resins to extracted bovine dentin conditioned with 10-3 were studied.Triton X-100 could promote the impregnation of the monomer, and the bond strength increased to 15MPa and the hybrid layer was identified by SEM and TEM examination.Generally creation of a hybrid layer is essential to bond resins to dentin, but an exception was found in Span 85 and Tween 20/MMA-TBB resins.The surfactants were accumulated at the adhesive interface during their diffusion and lower tensile bond strength and adhesive failure were observed.However, the hybrid layer was sandwiched by the cured resin and the intact dentin.
