von Arx T, Jensen SS, Bornstein MM. Changes of Root Length and Root-to-Crown Ratio after Apical Surgery: An Analysis by Using Cone-beam Computed Tomography. Journal of Endodontics. 2015 sep.;41(9):1424-9. doi: 10.1016/j.joen.2015.04.001
von Arx T, Jensen SS, Bornstein MM. Changes of Root Length and Root-to-Crown Ratio after Apical Surgery: An Analysis by Using Cone-beam Computed Tomography. Journal of Endodontics. 2015 sep.;41(9):1424-9. doi: 10.1016/j.joen.2015.04.001