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. 2019 Dec 31;20:2. doi: 10.1186/s12903-019-0978-z

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© The Author(s). 2019

Open AccessThis 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. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Enamel hypoplasia (17, 16, 13, 12, 43), amalgam fillings (16, 47), composite filling (44), and porcelains crowns (11, 21, 32, 31, 41, 42) in a 58-year old female