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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 (http://creativecommons.org/licenses/by/4.0/).
Periapical radiograph of tooth #24. Extensive resorptive defect observed on multiple areas of the dental root. The prognosis for this tooth was deemed guarded due to advanced ERR.