Effects of Silica Nanoparticles and Silica-Zirconia Nanoclusters on Tribological Properties of Dental Resin Composites

Figure 7

Images obtained by AFM. (a) Silica-zirconia nanoclusters, (b) silica nanoclusters, and (c) nonaggregated silica nanoparticles.

(a)

(b)

(c)