HASSAN, S.; AL–SANDOOK, T. Salivary calcium concentration in patients with high incidence of calculus formation. Al-Rafidain Dental Journal, [S. l.], v. 5, n. 1, p. 88–90, 2005. DOI: 10.33899/rden.2005.45519. Disponível em: https://rden.uomosul.edu.iq/index.php/rden/article/view/35510. Acesso em: 12 jan. 2026.