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. 2015 Apr 9;2(2):73–80. doi: 10.1007/s40496-015-0045-z

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© The Author(s) 2015

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 1 — Dental caries in first and second premolars. a Occlusal view before the surgical treatment. Underlying dark shadows were visually observed at the first and second premolars (arrow). SS-OCT observation was performed along red line. b Occlusal view during the cavity preparation. Presence of deep lesions with softened dentin was obvious (white arrow). c SS-OCT image at red line in (a) before cavity preparation. Bright zone indicates the increased light scattering in porous demineralized tissue (blue arrow). A strong reflection penetrating along the DEJ indicates the lesion is “cavitated” (red arrow)