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. 2022 Feb 25;10(3):431. doi: 10.3390/healthcare10030431

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a) Preoperative radiograph of an immature mandibular molar; (b) no complete apical closure at 6 months; (c) no complete apical closure at 12 months “continued apical closure”; (d) preoperative radiograph of an immature mandibular molar; (e) no complete apical closure at 6 months “continued apical closure”; (f) complete apical closure at 12 months; (g) preoperative radiograph of an immature mandibular molar; (h) complete apical closure at 6 months; (i) complete apical closure at 12 months.