yaqoub yousif , Sajjad, and Zainab Saleh Abdullah. “Effect of Tantalum Oxide Nanopowder on Heat Cure Acrylic Resin Impact Strength and Surface Hardness”. Diyala Journal of Medicine 25, no. 1 (October 31, 2023): 159–169. Accessed August 20, 2025. https://djm.uodiyala.edu.iq/index.php/djm/article/view/1030.