@article{article5a791d1d,
title   = {Radiopacity of root filling materials using digital radiography},
author = {Carvalho Júnior, J. R. and Correr-Sobrinho, Lourenço and Correr, A. B. and Sinhoreti, M. A. C. and Consani, S. and Sousa Neto, Manoel Damião de},
year = {2007},
doi = {10.1111/j.1365-2591.2007.01246.x},
journal   = {International Endodontic Journal}
}