TEGDMA and UDMA monomers released from composite dental material polymerized with diode and halogen lamps

Abstract

Background. More than 35 substances released from composite fllings have been identifed. Among these, basic monomers and the so-called co-monomers are most often reported. The substances released from polymer-based materials demonstrate allergenic, cytotoxic, genotoxic, mutagenic, embryotoxic, teratogenic, and estrogenic properties. Objectives. The aim of this study was to measure the amounts of triethylene glycol dimethacrylate (TEGDMA) and urethane dimethacrylate (UDMA) monomers released from composite dental fllings to citrate-phosphate buffer with the pH of 4, 6, 8 after 24 h and 6 months from the polymerization. Material and methods. Ten samples for each polymerization method had been made from the composite material (Filtek Supreme XT, 3M ESPE, St. Paul, USA), which underwent polymerization using the following lamps: Halogen lamp (Translux CL, Heraeus Kulzer, Hanau, Germany) (sample H) and diode lamp (Elipar Freelight 2, 3M ESPE), with soft start function (group DS) and without that function (group DWS). Results. It has been demonstrated that the type of light-curing units has a signifcant impact on the amount of TEGDMA and UDMA released. The amount of UDMA and TEGDMA monomers released from composite fllings differed signifcantly depending on the source of polymerization applied, as well as the pH of the solution and sample storage time. Conclusions. Elution of the monomers from composite material polymerized using halogen lamp was signifcantly greater as compared to curing with diode lamps.