Correction of the gummy smile using the flapless technique: case report . Research, Society and Development, [S. l.], v. 11, n. 15, p. e238111537093, 2022. DOI: 10.33448/rsd-v11i15.37093. Disponível em: https://rsdjournal.org/rsd/article/view/37093. Acesso em: 5 dec. 2025.