@article{borges_pedro_semanoff-segundo_miranda_pécora_cruz filho_2011,  title={Radiopacity evaluation of Portland and MTA-based cements by digital radiographic system},  volume={19},  ISSN={1678-7757},  url={https://doi.org/10.1590/S1678-77572011000300009},  DOI={10.1590/S1678-77572011000300009},  number={3},  journal={Journal of Applied Oral Science},  publisher={Faculdade De Odontologia De Bauru - USP},  author={Borges, Alvaro Henrique and Pedro, Fabio Luiz Miranda and Semanoff-Segundo, Alex and Miranda, Carlos Eduardo Saraiva and Pécora, Jesus Djalma and Cruz Filho, Antônio Miranda},  year={2011},  month={May},  pages={228–232} }