Kheirieh, S., Fazlyab, M., Torabzadeh, H. and Eghbal, M.J. 2014. Extraoral Retrograde Root Canal Filling of an Orthodontic Induced External Root Resorption Using CEM Cement. Iranian Endodontic Journal. 9, 2 (Mar. 2014), 149–152. DOI:https://doi.org/10.22037/iej.v9i2.5599.