L. de C. S. R. Seabra, R. R. Melo, V. E. Gomes, A. C. Oliveira, and E. Ferreira e Ferreira, “Social, behavioral, and biological factors associated with the presence of dental plaque on occlusal surfaces of first permanent molars”, Arq Odontol, vol. 48, no. 4, Jun. 2016.