Physicochemical Properties, Anti-Adhesion Effect against S. mutans, and Resistance to Mucin Adsorption of Dental Resins Contained Synthesized Silicone Methacrylates

With the purpose of preparing an anti-bacterial adhesion dental resin, two silicone methacrylates (SMAs) were synthesized. After being confirmed by the FT-IR and 1H-NMR spectra, the SMAs were incorporated into commonly used Bis-GMA/TEGDMA (50/50, wt./wt.) dental resin systems with an incremental series of concentrations. Physicochemical properties, anti-bacterial adhesion effect, and protein adsorption were tested. The results showed that SMAs had no influence on the double bond conversion of dental resin, and could decrease volumetric shrinkage of dental resin. Because of the increased hydrophobicity and reduced surface free energy, SMAs containing cured resin had resistance to mucin adsorption and anti-adhesion effect against S. mutans. However, flexural properties, water sorption and solubility of dental resin were impaired after introducing SMAs. Therefore, further research should be undertaken to improve these properties by utilizing appropriate inorganic fillers.