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. 2019 May 22;19:85. doi: 10.1186/s12903-019-0783-8

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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 — George gauge maximum retrusion and maximum protrusion. Shows how the absolute range of maximal mandibular retrusion (a) and protrusion (b) was measured (in mm) with the use of the George Gauge.