Parameters associated with active caries lesions assessed by two different visual scoring systems on occlusal surfaces of primary molars: a multilevel approach - Braga, Mariana Minatel; Martignon, Stefania; Ekstrand, Kim Rud; Ricketts, David N. J; Imparato, José Carlos Pettorossi; Mendes, Fausto Medeiros (Community dentistry and oral epidemiology, 2010)