Evaluation of impact of fixed orthodontic treatment on salivary pH . Journal of Pharmaceutical Negative Results, [S. l.], p. 911–913, 2023. DOI: 10.47750/pnr.2023.14.03.118. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/8133.. Acesso em: 13 jun. 2026.