PURBA, M. R.; TARIGAN, G. C. . .; LOKANATA, S. The effectiveness of natural tooth whitening using herbal substances on coffee-induced tooth discoloration. Buletin Kedokteran & Kesehatan Prima, [S. l.], v. 4, n. 1, p. 177-182, 2025. DOI: 10.34012/bkkp.v4i1.6793. Disponível em: https://jurnal.unprimdn.ac.id/index.php/bulkesprima/article/view/6793. Acesso em: 24 apr. 2025.