Harandi, Azadeh, Sina Mirzaeerad, Mahgol Mehrabani, Elham Mahmoudi, and Ali Bijani. 2017. “Incidence of Dentinal Crack After Root Canal Preparation by ProTaper Universal, Neolix and SafeSider Systems”. Iranian Endodontic Journal 12 (4):432-38. https://doi.org/10.22037/iej.v12i4.17597.