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. 2019 Nov 21;19:253. doi: 10.1186/s12903-019-0940-0

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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. 3 — The model of the teeth is imported in the guided surgery software and superimposed on the CBCT reconstruction by means of reference points (Lego bricks). These reference points are also useful to understand the quality of the CBCT, in order to highlight any possible patient movement and possible related CBCT distorsion. The superimposition, by points and surfaces, is extremely accurate