FARIHA IRFAN; SYED ABRAR ALI; HINA KHAN; ABDUR REHMAN; HIRA AKHTAR; MUHAMMAD ZOHAIB YOUNUS. PREVALENCE OF C-SHAPED ROOT CANALS AND ITS TYPES IN MANDIBULAR SECOND MOLARS IN KARACHI PAKISTAN: AN IN-VITRO STUDY. Pakistan Oral & Dental Journal, v. 42, n. 4, p. 184-188, 24 Jan. 2023.