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. 2019 Sep 15;13(2):187–192. doi: 10.1055/s-0039-1695662

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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. 8 — Representative scanning electron microscope micrograph for ( A ) dentin surface after treatment with eggshell–titanium dioxide for 3 h. ( B ) Dentin surface postexposure to 4 wt% citric acid solution for 30 min (a, ×19000; b × 5000). (a1) Energy-dispersive X-ray spectrum of the dentin surface treated with eggshell–titanium dioxide; energy-dispersive X-ray. (b1) spectrum of the dentin surface postexposure to 4 wt% citric acid solution for 2 min. Arrows pointing to eggshell–titanium dioxide particles.