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