Elution of residual monomers from dental composite materials

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ABSTRACT

Aim

This study was designed to determine the type and amount of the monomers leached from the different
particle sizes of the composite materials.

Methods

Three different disk sizes (2, 4, 6 mm) prepared for
each material group (Filtek Flow, Filtek A110, Filtek P60 and Filtek Supreme) were polymerised by LED and halogen light; the
specimens were then placed in artificial saliva. The monomer release in 30 min and 24 hrs from the specimens was analyzed
in HPLC calibrated for the monomer extracts before.

Results

TEGDMA release was detected in all material groups after 30
min and after 24 hrs. BisGMA and BisEMA were not determined in any groups and UDMA was detected only in Filtek
Supreme. Significant differences in release of TEGDMA and UDMA were obtained between the different sizes of discs.
Significantly high amount of TEGDMA and UDMA monomer release was obtained in LED than Halogen groups. Lower
amount of monomer release was obtained in species of 30 min than 24 hrs.

Conclusion

Data has revealed that the
monomer release could be detected significantly high from the composite materials polymerized by a lower output curing
light device; and higher elution of monomers was determined as the composite thickness has increased. Therefore, the
clinical applications of composite materials and the type of curing units have very important effects on the success of
restorations and in the decrease of potential side effects.

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