Abazarpour, Ramin, Masoud Parirokh, Aida Farhadi, Zahra Jalali, and Nasir Kheirabadi. 2017. “Successful Ultra-Conservative Management of a Mandibular Premolar With Dens Invaginatus”. Iranian Endodontic Journal 12 (3):390-95. https://doi.org/10.22037/iej.v12i3.16559.