Objective: To determine the effect of organosilane content on the physicochemical properties of model composites formulated with nano-sized fillers.
Methods: Model composites were formulated with dimethacrylate-based monomers, a photoinitiator/co-initiator system and silicon dioxide nano-sized fillers treated with different amounts of 3-methacryloxypropyltrimethoxysilane (MPTS): 1.0 (G), 2.