“Effect of Endodontic Instrument Tip Fracture on Apical Sealing of Obturated Root Canal: In Vitro and Retrospective Clinical and Radiological Study”. Journal of Hama University 1, no. 7 (July 24, 2019). Accessed April 25, 2026. https://hama-univ.edu.sy/ojs/index.php/huj/article/view/117.