A Ismail, S., M O Al-Ashou, W., & A Al-Askary, R. (2011). Evaluation of the Apical Seal in Root Canals Prepared with Rotary ProTaper Files and Obturated by Different Methods. Al-Rafidain Dental Journal, 11(2), 390–396. https://doi.org/10.33899/rden.2011.45468