Mehrvarzfar, Payman, Mohammad Ali Saghiri, Kasra Karamifar, Zohre Khalilak, and Nahid Maalek. 2010. “A Comparative Study Between Resilon and Gutta-Percha As a Secondary Root Canal Filling Materials: An In Vitro Study”. Iranian Endodontic Journal 5 (3):117-20. https://doi.org/10.22037/iej.v5i3.1832.