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. 2020 Apr 7;20:97. doi: 10.1186/s12903-020-01090-x

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© The Author(s) 2020

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. 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 in a credit line to the data.

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Fig. 4 — Full arch surface comparison of two selected scans from Planscan (a, b) or Physical impression (c, d) group. a In the case of local best fit at scanning origin (red arrow, tooth 15), the surface deviation on the tooth 15 was 87 μm, where on the whole arch, it was 688 μm. b In the case of best fit on the full arch (conventional method), the surface deviation on the whole arch was 463 μm. c In the case of local best fit at scanning origin (red arrow, tooth 15), the surface deviation on tooth 15 was 47 μm, where on the whole arch, it was 119 μm. d In the case of best fit on the full arch (conventional method), the surface deviation on the whole arch was 111 μm. The scale of color bars set equally on each figure. Little difference can be seen between b and d figures contrary to the differences between a and c, indicating the importance of the scan origin