Nauman Bari Khan; Muhammad Azhar; Amir Mushtaq Baig; Qamar Ishfaque; Ayesha Raza; Nabeela Abbasi; Shifa Mehmood. ROOT CANAL CONFIGURATIONS IN PERMANENT MANDIBULAR INCISORS: A CONE BEAM COMPUTERISED TOMOGRAPHY STUDY. Pak Oral Dent J 2020, 40 (4), 240-243.