@article{2004,  title={39º Encontro GBMD - Grupo Brasileiro de Materiais Dentários},  volume={12},  ISSN={1678-7757},  url={https://doi.org/10.1590/S1678-77572004000500005},  DOI={10.1590/S1678-77572004000500005},  number={spe},  journal={Journal of Applied Oral Science},  publisher={Faculdade De Odontologia De Bauru - USP},  year={2004},  pages={37–54} }