Hamid, Hamid A, and Abdul-kareem J Al-Azzawi. 2013. “The Effect of Smear Layer on Push-Out Bond Strength to Dentin of Bioceramic Sealer (In Vitro Study)”. Journal of Baghdad College of Dentistry 25 (4): 5-11. https://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/161.