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. 2023 Apr 14;137(4):1117–1146. doi: 10.1007/s00414-023-02960-z

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© The Author(s) 2023

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/.

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Fig. 3 — a Number of studies applying the ten most assessed methods for age estimation in dental radiographic images in the period evaluated in this review (2016 to 2022), where PTVR represents the works that used pulp-to-tooth volumetric ratios; b Number of studies relying on the different types of radiological dental images used in the period evaluated in this review (2016 to 2022)