Botulinum toxin type A and the gummy smile. Research, Society and Development, [S. l.], v. 12, n. 5, p. e29112541901, 2023. DOI: 10.33448/rsd-v12i5.41901. Disponível em: https://rsdjournal.org/rsd/article/view/41901. Acesso em: 6 dec. 2025.