The importance of ultrasound imaging for the tracking of facial fillers - clinical case. Research, Society and Development, [S. l.], v. 10, n. 13, p. e307101321446, 2021. DOI: 10.33448/rsd-v10i13.21446. Disponível em: https://rsdjournal.org/rsd/article/view/21446. Acesso em: 5 dec. 2025.