Ezzulddin Hussein, I. and Himmadi Hasan, R. 2021. The Effect of Zirconium Oxide Nanoparticle on the Tear Strength of Maxillofacial Silicone. Al-Rafidain Dental Journal. 21, 2 (Sep. 2021), 193–201. DOI:https://doi.org/10.33899/rden.2020.128715.1060.