Nazari Moghadam, Kiumars, et al. “Canal Transportation and Centering After Using PathFile and R-Pilot in Mesiobuccal Canals of Maxillary Molars Using Cone-Beam Computed Tomography”. Iranian Endodontic Journal, vol. 14, no. 1, Jan. 2019, pp. 35-39, doi:10.22037/iej.v14i1.21601.