@article{articlea9444236,
title   = {Radiopacity evaluation of Portland and MTA-based cements by digital radiographic system},
author = {Borges, Álvaro Henrique and Pedro, Fábio Luis Miranda and Segundo, Alex Semenoff and Miranda, Carlos Eduardo Saraiva and Pécora, Jesus Djalma and Cruz Filho, Antonio Miranda da},
year = {2011},
doi = {10.1590/s1678-77572011000300009},
journal   = {Journal of Applied Oral Science}
}