Saieed, Dr. Noor Aldiin A., and Dr. Iman M. Al-Zaka. “The Incidence of Dentinal Root Defects Caused by Different Nickel Titanium Instruments”. Mustansiria Dental Journal 12, no. 1 (February 10, 2019): 1–9. Accessed May 15, 2024. https://mdj.uomustansiriyah.edu.iq/index.php/mdj/article/view/822.