Al-Kasaki, D.M.F. and Al-Azzawi, P.D.A.J. 2018. The effect of dowel space preparation on the apical seal of Resilon & Gutta-percha obturation materials. (An in vitro comparative study. Mustansiria Dental Journal. 5, 4 (Jan. 2018), 327–334. DOI:https://doi.org/10.32828/mdj.v5i4.553.