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. 2016 Feb 11;6:20950. doi: 10.1038/srep20950

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At a laser fluence of 4.69 J/cm², scanning line spacing of 12 μm and number of scanning layers of 200: (a) enamel and (b) dentin; At a laser fluence of 4.69 J/cm², scanning line spacing of 40 μm and number of scanning layers of 600: (c) enamel and (d) dentin.