Sheykhrezai, M.S., Aligholi, M., Ghorbanzadeh, R. and Bahador, A. 2009. A Comparative Study of Antimicrobial Activity of Proroot MTA, Root MTA, and Portland Cement on Actinobacillus Actinomycetemcomitans. Iranian Endodontic Journal. 3, 4 (Apr. 2009), 129–133. DOI:https://doi.org/10.22037/iej.v3i4.941.