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Effect of food simulating liquids on release of monomers from two dental resin composites

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Author(s): Ghavam M | Arami S | Tabatabai E

Journal: Journal of Dental Medicine
ISSN 1024-641X

Volume: 23;
Issue: 1;
Start page: 6;
Date: 2010;
Original page

Keywords: Monomer | Dental composite | GC | Bis-GMA | TEGDMA | UDMA

ABSTRACT
"nBackground and Aims: The elution of residual monomers from cured dental composites to oral cavity has a harmful effect on human health and can affect their clinical durability. The purpose of this study was to evaluate the amount of eluted monomers (Bis-GMA, TEGDMA, UDMA) from two types of composites (Gradia and P60) after exposure to food simulating liquids such as ethanol (25, 50, 75 %) and heptane 50 % for 24 hours and 7 days. "nMaterials and Methods: Forty specimens of each composite were prepared. Equal numbers of each composite were immersed in tubes containing 2cc volumes of 25, 50, 75 % ethanole and 50 % heptane. The amount of eluted monomers in standard condition such as Bis-GMA, TEGDMA and UDMA was measured by GC/MS (Gas Chromatography/Mass Spectroscopy) and results were statistically analysed by three way and one way ANOVA. P
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