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. 2019 Jun 1;11(6):e512–e520. doi: 10.4317/jced.55618

Figure 1.

Figure 1

SEM images (magnification 1000x; white bar = 50 µm) of the enamel surface topography. Images of unexposed enamel (a, c, e) and exposed enamel (b, d, f) to H2O2 pH<5.5. The relief of the enamel prisms are clearly discernable in the exposed enamel (b, d, f). The pitted appearance is particularly pronounced in enamel exposed to H2O2 at acidic pH values. Images of the enamel surface topography of unexposed enamel (g, i, k) and exposed enamel (h, j, l) to H2O2 pH>5.8. The exposed enamel (h, j, l) shows a surface of enamel without debris of organic material, where scratches and marks of the surface are detectable.