Figure 4.

Interactions between surface, pH and atmosphere affects tha bacterial adhesion. The first figure (a) illustrates the effect of pH and surface properties on the adhesion of S. mitis in co-culture with A. oris. The adhesion of S. mitis is less on both surfaces after incubation at pH 5.0 than 7.0 the reduction is however statistically significant larger for the adhesion to machined titanium than anodized titanium. Figure (b) illustrates the effect of surface properties and aerobic or anaerobic environment on the adhesion of S. mitis in co-culture with A. oris. The adhesion to the anodized surface was found to be reduced by aerobic incubation while the opposite was found for the adherence to machined titanium, this difference is however not statistically significant.