Elution of Monomers From CAD-CAM Materials and Conventional Resin Composite in Distilled Water and Artificial Saliva

Abstract

SUMMARY Purpose The purpose of this study was to evaluate the leaching pattern of different types of polymer computer-aided design and computer-aided manufacturing (CAD-CAM) materials with a conventional resin composite. Methods and Materials Specimens of three representatives by type of polymer CAD-CAM blocks and one conventional resin composite were suspended using a silk thread in distilled water and artificial saliva. After one day, seven days, 14 days, 30 days, and 60 days, the analysis of the eluates for the detection of bisphenol A (BPA), urethane dimethacrylate (UDMA), triethylene glycol dimethacrylate (TEGDMA) and bisphenol A-glycidyl dimethacrylate (Bis-GMA) was quantified by utilizing high-performance liquid chromatography (HPLC). Results TEGDMA was the main eluted monomer for the polymer CAD-CAM materials for both solutions. However, there was a decreasing pattern throughout the tested period. On the contrary, there was a constant release of monomers from the conventional resin composite. Bisphenol-A was released only by the conventional resin composite and in both solutions chosen. Conclusions Different types of polymer CAD-CAM materials release minimal or no monomers compared to the conventional resin composite material. The methods of fabrication of polymer CAD-CAM materials produces better properties than the conventional resin composite with a dramatic decrease of monomer elution.