Resin-based dental restorative materials contain allergenic methacrylate monomers, which may be released into saliva after restorative treatment. Monomers from resin-based composite materials have been demonstrated in saliva in vitro; however, studies analyzing saliva after restorative therapy are scarce. The aim of this study was to quantify methacrylate monomers in saliva after treatment with a resin-based composite filling material.

Resin-modified glass ionomer fillings are commonly used in pediatric dentistry. We have investigated possible exposure of monomers from such materials in vivo. Saliva was collected at three time points, pre-treatment, immediately after placement, and one week post-placement, from 20 patients aged seven to ten that had their first resin-based glass ionomer filling placed.

Tooth-coloured materials dominate restorative treatments in the Nordic countries today. The most recent developments have concentrated on monomers and filler particles. The present article discusses the composition of and results from laboratory studies on contemporary materials with specific focus on nanocomposites and the clinical relevance of laboratory studies. Furthermore polymerization by LED light curing units and the risk of release of hormone-like chemicals from composites are briefly discussed.

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

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.