Effects of Cold-Light Bleaching on Enamel Surface and Adhesion of Streptococcus mutans

Figure 2

Atomic force microscopy (AFM) images of enamel surface. (a) Three-dimensional image of unbleached specimen. (b) 3D image of cold-light bleached specimen. (c) 3D image of hydrogen peroxide bleached specimen. (d) Roughness average (Ra, nm) values of specimens.

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