Bis‐GMA Free Dental Materials Based on UDMA/SR833s Dental Resin System

Abstract

ABSTRACTTricyclododecane dimethanol diacrylate (SR833s) was used to replace triethylene glycol dimethacrylate (TEGDMA) as a diluent monomer and mixed with 1,6‐bis(methacryloxy‐2‐ethoxy‐carbonylamino)‐2,4,4‐trimethylhexane (UDMA) to prepare 2,2‐bis[4‐(2‐hydroxy‐3‐methacryloyloxypropyl)‐phenyl]propane (Bis‐GMA) free dental resin system, and commonly used BaAlSiO2 dental microfillers were added into UDMA/SR833s resin to prepare Bis‐GMA free dental composites. Physicochemical properties such as double bond conversion, polymerization shrinkage, water sorption and solubility, flexural strength, and modulus of UDMA/SR833s resin and relevant composites were investigated. The results showed that UDMA/SR833s resin had better physicochemical properties than UDMA/TEGDMA and Bis‐GMA/TEGDMA resins. Although UDMA/SR833s‐based composites had lower flexural strength and modulus than commercial dental composite Z250, they still met the International Organization for Standardization (ISO) standard requirement (in flexural strength and modulus for resin‐based dental materials). Except for the flexural strength and modulus, all the other properties of UDMA/SR833s‐based composites were comparable or better than those of Z250. Therefore, UDMA/SR833s resin and its relevant composites had potential to be used in dentistry as Bis‐GMA free dental materials.