Effectiveness of low cost toothbrushes, with or without dentifrice in the removal of bacterial plaque in deciduous teeth - Parizotto, Symonne Pimentel Castro de Oliveira Lima; Rodrigues, Célia Regina Martins Delgado; Singer, Júlio da Motta; Sef, Henry Corazza (Pesquisa Odontológica Brasileira, 2003)