Upper labial frenum: When and how do i intervene?. Research, Society and Development, [S. l.], v. 10, n. 2, p. e31410212608, 2021. DOI: 10.33448/rsd-v10i2.12608. Disponível em: https://www.rsdjournal.org/rsd/article/view/12608. Acesso em: 13 dec. 2025.