Mahmoud, Dizhwar Hussein, and Salman R. .F. “Effect of Different Instrument Systems on the Quality of Bio-Ceramic Obturation Material: (An in Vitro Leakage and SEM Study)”. Erbil Dental Journal (EDJ) 3, no. 1 (June 6, 2020): 1–9. Accessed May 5, 2024. https://edj.hmu.edu.krd/index.php/journal/article/view/edj.2020.01.