@article{kubo_valera_gomes_mancini_camargo_2008,  title={The effect of endodontic materials on the optical density of dyes used in marginal leakage studies},  volume={22},  ISSN={1806-8324},  url={https://doi.org/10.1590/S1806-83242008000100005},  DOI={10.1590/S1806-83242008000100005},  number={1},  journal={Brazilian Oral Research},  publisher={Sociedade Brasileira de Pesquisa Odontológica - SBPqO},  author={Kubo, Claudio Hideki and Valera, Marcia Carneiro and Gomes, Ana Paula Martins and Mancini, Maria Nadir Gasparoto and Camargo, Carlos Henrique Ribeiro},  year={2008},  month={Jan},  pages={25–30} }