Bali, Harleen, et al. “The Relationship of The Mandibular Canal to The Roots of Impacted Third Molars- The Root Factor: A Panoramic Radiographic Study”. Journal of Lumbini Medical College, vol. 8, no. 1, June 2020, pp. 22-29, https://nepjol.info./index.php/JLMC/article/view/40683.