R, H. ., A. . RAJASEKAR, and N. . B. “Association Between Trauma from Occlusion and Periodontal Status of Mandibular Anterior Teeth”. The Journal of Contemporary Issues in Business and Government, vol. 27, no. 2, Apr. 2021, pp. 380-5, https://cibgp.com/au/index.php/1323-6903/article/view/939.