Abstract
The amounts of monomers eluted from experimental light-activated composite resins based on TEGDMA and two types of urethane dimethacrylates were measured by HPLC.Seven different types of filler systems were employed to examine the effect of filler particle size on the monomer elution.For all of the composite resins, the amount of eluted monomers significantly increased with the increase in the depth from the exposed surface.The amount of eluted monomers significantly increased with the decrease in the filler particle size ranging from 1.6 to 18.8μm.These findings indicated that the curing of the composite resins was affected by the difference in refractive indices between filler particle and resin matrices.
