Association between the early use of toothpaste and other variables with dental fluorosis: a transversal retrospective study - Buzalaf, Marília Afonso Rabelo; Bastos, José Roberto de Magalhães; Lauris, José Roberto Pereira; Almeida, Beatriz Simões de; Aquilante, Aline Guerra (Revista da Faculdade de Odontologia de Bauru, 2002)