Figure 3

MTT metabolic activity of 2-day biofilms covering the composites. Mean ± SD; n = 6. Values with dissimilar letters are significantly different from each other (P < 0.05). CL, chain length; MTT, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide; NACP, nanoparticles of amorphous calcium phosphate; SD, standard deviation.