Artificial Caries Resistance in Enamel after Topical Fluoride Treatment and 445 nm Laser Irradiation

Figure 3

Polarized light microscopy of the paired representative lesion (water imbibition, ×16). (a) No treatment/control (C), (b) 445 nm laser irradiation alone, (c) topical fluoridation alone, and (d) topical fluoridation followed by 445 nm laser irradiation.

(a)

(b)

(c)

(d)