Figure 3. Representative AFM images (256×256 pixels) of enamel, dentin, and restorative materials.

(a, b, and c): eroded enamel brushed with WF, NaF, and SnF2 toothpastes, respectively; (d, e, and f): eroded dentin brushed with WF, NaF, and SnF2 toothpastes, respectively; (g, h, and i): eroded RMGIC brushed with WF, NaF, and SnF2 toothpastes, respectively; (j, k, and l): Eroded CR brushed with WF, NaF, and SnF2 toothpastes, respectively