RAO, Anupama et al. Improvement in awareness levels and periodontal health among patients undergoing fixed orthodontic appliance therapy with established gingivitis and periodontal health maintenance program: A questionnaire based study.. Journal of Oral Research, [S.l.], v. 9, n. 6, p. 500-510, dec. 2020. ISSN 0719-2479. Available at: <http://joralres.com/index.php/JOR/article/view/joralres.2020.096>. Date accessed: 01 mar. 2021. doi: https://doi.org/10.17126/joralres.2020.096.