Triethylene glycol dimethacrylate TEGDMA

Compomers contain no water, but rather are mainly formulated from the same components as conventional composite resins. Typically this means macromonomers, such as bis-glycidyl ether dimethacrylate (bisGMA) or its derivatives and/or urethane dimethacrylate, blended with viscosity-reducing diluents, such as triethylene glycol dimethacrylate (TEGDMA). These polymer systems are filled with non-reactive inorganic powders, for example, quartz or a silicate glass [271]. 

The majority of resins are composed of two dimethacrylate monomers, 2,2 -bis [4(2-hydroxy-3-methacryloyloxypropyloxy)phenyl] propane (Bis-GMA) and triethylene glycol dimethacrylate (TEGDMA) [22-28]. Typically, TEGDMA or other methacrylate monomers are added as viscosity modifiers to Bis-GMA to make the solution less viscous and more appropriate for clinical use. These diluents also allow for better distribution of the components during manufacture of these composite systems. Another common monomer used to make dental composites, especially those manufactured in Europe, is urethane dimethacrylate [24,29, 30], Ethoxy bisphenol A dimethacrylate is another modification of the Bis-GMA monomer that can be used to make a more hydrophobic polymer that would better withstand the wet oral environment. Other diluents include low viscosity diacrylates and dimethacrylates. Table 1 lists some of these monomers [31-37]. 

Ethylene glycol dimethacrylate (EGDMA), 2-5% pet Triethylene glycol dimethacrylate (TEGDMA), 1-2% pet... 

A powder-liquid formulation containing 70% bis(3-methacryloxy-2-hydroxypropyl) bisphenol A (BIS-GMA), 30% triethylene glycol dimethacrylate (TEGDMA), 0.2% butylated hydroxytoluene (BHT) and various amine concentrations in the liquid and a BP-coated silanized spherical silica and BaF containing glass as powder was employed. 

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