Hamad, Dilpak Khursheed, and Bayan Abdulla Hassan. “Evaluation of Salivary Nickel, Chromium and Iron Ions in Patients Treated With Fixed Orthodontic Appliances in Vivo Study: In Vivo Study”. Erbil Dental Journal (EDJ) 1, no. 2 (December 6, 2018): 109–116. Accessed July 3, 2024. https://edj.hmu.edu.krd/index.php/journal/article/view/41.