The effect of post-cure heating on residual, unreacted monomer in a commercial resin composite

摘要

Objectives. This paper examined the influence of post-cure temperature on the amount of unreacted monomer remaining in a commercial light-cured resin composite restoration following initial light-curing and subsequent post-cure heating. Methods. Discs of composite were light-cured and then subjected to immediate post-cure heating (50,75,100, or 125 deg. C for 7 min) or were Left unheated (control). They were then placed in a solvent for two weeks at 37 deg. C to extract the unreacted monomer. HPLC analysis was used To determine the amounts of TEGDMA, BIS-GMA, and ethoxylated BIS-GMA remaining after the different treatments. The amounts of each Monomer leaching were compared using ANOVA with respect to the different curing treatments.