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