KEERTHANA, R., M. . KUMAR, and M. . CHAUDHARY. “Reasons for Extraction of Permanent Teeth - An Institutional Study”. The Journal of Contemporary Issues in Business and Government, vol. 27, no. 2, Apr. 2021, pp. 2954-6, https://cibgp.com/au/index.php/1323-6903/article/view/1200.