Alnamel, Hasanen A, and Mohammed Mudhaffer. 2014. “The Effect of Silicon Di Oxide Nano -Fillers Reinforcement on Some Properties of Heat Cure Polymethyl Methacrylate Denture Base Material”. Journal of Baghdad College of Dentistry 26 (1): 32-36. https://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/293.