Lip repositioning as a gingival smile treatment: Narrative literature review. Research, Society and Development, [S. l.], v. 13, n. 6, p. e2013645950, 2024. DOI: 10.33448/rsd-v13i6.45950. Disponível em: https://rsdjournal.org/rsd/article/view/45950. Acesso em: 5 dec. 2025.