Xenogeneic collagen matrix for the treatment of multiple gingival recessions in esthetics areas: a case series with 24-month follow-up . Research, Society and Development, [S. l.], v. 10, n. 10, p. e349101018776, 2021. DOI: 10.33448/rsd-v10i10.18776. Disponível em: https://rsdjournal.org/rsd/article/view/18776. Acesso em: 5 dec. 2025.