Hamedi A, Saeidi S, Kheradmand Z. Non-surgical Management of a C-shaped Mandibular Second Molar with Apical Periodontitis and External Root Resorption: A Case Report. Iran Endod J [Internet]. 2025 Oct. 29 [cited 2026 Jul. 28];20(1):e45. Available from: https://journals.sbmu.ac.ir/iej/article/view/48177