The preparation of polymeric dental restorative materials was carried out using multiple hybrid-filler system composed of barium microfiller, quartz, and silica microfiller which surface was treated with γ-MPS silane to improve the miscibility with multi-functional acrylate resin matrix. Also, effects of photo-initiator and photo-accelerator on the degree of conversion of dental materials were investigated by using FT-IR spectroscopy. Diametral tensile strength and degree of conversion of dental monomer were measured and further investigated by comparing with those of commercial products.