The Relationship Between Tooth Brushing Methods and Gum Bleeding Among the Elderly at Posyandu Lansia in Surabaya . International Journal of Advanced Health Science and Technology, [S. l.], v. 4, n. 4, p. 257 – 260, 2024. DOI: 10.35882/ijahst.v4i4.380. Disponível em: https://ijahst.org/index.php/ijahst/article/view/380. Acesso em: 16 aug. 2025.