Sirisak W. Endodontic Management of a Maxillary First Molar with a Separated Instrument and a Second Mesiobuccal Canal (MB2): A Case Report. loei j. [internet]. 2025 Jul. 16 [cited 2026 Sep. 2];3(1):1-14. available from: https://he03.tci-thaijo.org/index.php/JOPOLO/article/view/4556