Polymer based restorative materials – a study of important properties -

The composition, leachable products, and physical properties of toothcoloured restorative materials have been determined. The composition was often found to be more complex than described in the MSDS of the materials. The most frequently used monomers such as TEGDMA, Bis-GMA, Bis-EMA, UDMA, and 2-HEMA were detected, as well as several other monomers and different additives (initiators, activators, and stabilizers). The initiator camphoroquinone was found in all the investigated materials. B

Water sorption and solubility of dental composites and identification of monomers released in an aqueous environment. -

The resin composition influences the water sorption and solubility behaviour of composite resin materials. The HPLC analysis of eluted components revealed that triethyleneglycol dimethacrylate (TEGDMA) was the main monomer released. Maximal monomer concentration in the eluate was observed after 7 days.