The Relationship between Knowledge of Oral Health Maintenance with the Incidence of Gingivitis in Traders. JURNAL PROTEKSI KESEHATAN, [S. l.], v. 13, n. 2, p. 118–123, 2024. DOI: 10.36929/jpk.v13i2.862. Disponível em: https://jurnal.pkr.ac.id/JPK/article/view/862. Acesso em: 18 jan. 2026.