Fig. 3
Quantification of biofilm formation by means of crystal violet assay. White bars, Bioloy®; gray bars, titanium alloy (Ti6Al4V); black bars, chrome-cobalt (CoCrMo); R, rough surface; S, smooth surface. *p < 0.05, **p < 0.01, ***p < 0.001. Data are expressed as median and interquartile ranges