@article{josgrilberg_guimarães_pansani_cordeiro_2007,  title={Influence of the power level of an ultra-sonic system on dental cavity preparation},  volume={21},  ISSN={1806-8324},  url={https://doi.org/10.1590/S1806-83242007000400014},  DOI={10.1590/S1806-83242007000400014},  number={4},  journal={Brazilian Oral Research},  publisher={Sociedade Brasileira de Pesquisa Odontológica - SBPqO},  author={Josgrilberg, Érika Botelho and Guimarães, Murilo de Sousa and Pansani, Cyneu Aguiar and Cordeiro, Rita de Cássia Loiola},  year={2007},  month={Oct},  pages={362–367} }