Accuracy of direct digital radiography for detecting occlusal caries in primary teeth compared with conventional radiography and visual inspection: an in vitro study - Dias da Silva, P. R.; Marques, Márcia Martins; Steagall Junior, W.; Mendes, Fausto Medeiros; Lascala, César Ângelo (Dentomaxillofacial Radiology, 2010)