Etiology of tooth discoloration- a review. Nigerian Dental Journal, [S. l.], v. 18, n. 2, p. 56–63, 2010. DOI: 10.61172/ndj.v18i2.143. Disponível em: https://nigeriandentaljournal.ng/index.php/ndj/article/view/143. Acesso em: 5 nov. 2024.