Study of the temporal evolution of whitening in teeth undergoing mouthwashes using digital image processing. Revista de Investigaciones Universidad del Quindío, [S. l.], v. 28, n. 1, p. 9–13, 2016. DOI: 10.33975/riuq.vol28n1.30. Disponível em: https://revistas.uniquindio.edu.co/ojs/index.php/riuq/article/view/30. Acesso em: 25 jun. 2026.