(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
Figure 11: SEM morphology of S. sanguinis and F. nucleatum adhesion on the surface of each sample after 24 hours of incubation (scale bar of (a–h) = 2 μm). SEM of S. sanguinis: SLM (a), MAO (b), 1 mM-Zn (c), and 100 μM-Zn (d), and SEM of F. nucleatum: SLM (e), MAO (f), 1 mM-Zn (g), and 100 μM-Zn (h).