There are three very crucial and significant virulence factors which are associated with the cariogenicity of S. Mutans that you should know. The first property is completely dependent on the synthesis of water-soluble glycans that come from sucrose (a disaccharide). Second, I possess the ability to develop more acid tolerance. Which leads to the third characteristic that displays a production of lactic acid from dietary sugars.
6) Krzyściak, W., Jurczak, A., Kościelniak, D., Bystrowska, B., & Skalniak, A. (2014). The virulence of Streptococcus mutans and the ability to form biofilms. Retrieved November 28, 2016, from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3953549/