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. 2019 Aug 28;13(3):391–398. doi: 10.1055/s-0039-1693748

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This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.

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Fig. 2 — ( A ) The baseline of normal bovine enamel sample. ( B ) Demineralized enamel. ( C ) Remineralized enamel exhibiting precipitation of a few numbers of white nanoparticles on the dentinal tubules orifices after 15 days’ treatment using (A3) toothpaste at magnification (1, 000×). ( D ) Remineralized enamel exhibiting precipitation of a few numbers of white nanoparticles on the dentinal tubules orifices after 15 days’ treatment using (A3) toothpaste at magnification (2,000×).