Kim K, et al. - Researchers gauged how bisphenol A glycidyl methacrylate (bis-GMA) changes the virulence properties of Streptococcus mutans, a major cariogenic bacterium in humans. Results suggested a contribution of leachable bis-GMA in to biofilm-related secondary dental caries at the marginal interface between resin-based materials and teeth by altering the virulent properties of S. mutans. Nonetheless, the planktonic growth and viability of S. mutans was reduced by bis-GMA.