H. A. Pellegrini, A. da Silveira, C. A. Lascala, C. Costa, and M. A. A. de C. Luz, “The influence of film type and processing method on radiographic density for occlusal caries diagnosis”, Clin Lab Res Dent, vol. 21, no. 4, pp. 234–239, Dec. 2015, doi: 10.11606/issn.2357-8041.clrd.2015.123684.