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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. 6 — Representative scanning electron microscope micrograph for ( A ) dentin surface wet ground with silicon carbide paper for 60 s. ( B ) Pretreatment of dentin surface exposed 4% wt citric acid solution for 2 min (×5000). Arrows showing narrow dentin tubules.