title: Synthesis of a novel tertiary amine containing urethane dimethacrylate monomer (UDMTA) and its application in dental resin.
abstract: A novel tertiary amine containing urethane dimethacrylate monomer UDMTA was synthesized with the aim of replacing Bis-GMA as one component of dental restorative materials. The structure of UDMTA was confirmed by FT-IR and (1)H-NMR spectra. UDMTA was incorporated into Bis-GMA/TEGDMA (50 wt%/50 wt%) resin system to replace Bis-GMA partly and totally. Double bond conversion, polymerization volumetric shrinkage, water sorption and solubility, flexural strength and modulus of UDMTA containing resin formulations were studied with neat Bis-GMA/TEGDMA resin formulation as a reference. Results showed that UDMTA could be used as a coinitiator in photocurable dental resin, UDMTA containing resin had higher double bond conversion and lower polymerization shrinkage than that of Bis-GMA/TEGDMA resin, and the UDMTA containing copolymer had higher flexural strength and flexural modulus than Bis-GMA/TEGDMA copolymer. When UDMTA was used to replace more than 25 wt% of Bis-GMA, the obtained copolymer had higher water sorption and solubility. The optimized resin composition is by replacing 25 wt% of Bis-GMA in Bis-GMA/TEGDMA (50/50 by wt%), for the prepared resin had the best comprehensive properties.
authors: College of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.
authors: Dongliang
authors: D
authors: Liu
authors: Fang
authors: F
authors: Liu
authors: Jingwei
authors: J
authors: He
authors: Lippo V J
authors: LV
authors: Lassila
authors: Pekka K
authors: PK
authors: Vallittu
mesh_terms: D000588:Amines / Q000737:chemistry*; D055119:Elastic Modulus; D006244:Hardness; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry*; D011140:Polyurethanes / Q000737:chemistry*; D012117:Resins, Synthetic / Q000138:chemical synthesis*; D013718:Tensile Strength
chemical_list: D000588:Amines; D008689:Methacrylates; D011140:Polyurethanes; D012117:Resins, Synthetic; C029824:urethane dimethacrylate luting resin