Al-Qazwini , Ahmed A, and Raghad A Al-Hashimi. “In Vitro Comparative Assessment Of The Effect Of Gutta-Fusion Obturation On The Push Out Bond Strenght Of Three Types Of Sealers”. Journal of Baghdad College of Dentistry, vol. 29, no. 4, Dec. 2017, pp. 13-19, https://doi.org/10.12816/0042986.