Figure 2
From: Effect of anti-biofilm glass–ionomer cement on Streptococcus mutans biofilms
Surface charge density. Quaternary amine surface charge densities of the GICs with different mass fractions of DMADDM (mean±standard deviation; n=6). The surface charge density significantly increased with increases of the DMADDM mass fraction. Values with dissimilar letters are significantly different from each other (P<0.05). DMADDM, dimethylaminododecyl methacrylate; GIC, glass–ionomer cements.
