Al-Nuamee, Shefaa, Waad Haider, Ali Muhssen, Abbod Al-Razqi, Tariq Jassim, and Mona Al-Safi. Journal of Baghdad College of Dentistry 25, no. Special Is (1): 72-76. Accessed November 27, 2019. http://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/202.