@article{lopez_barletta_fontanella_grecca_2011,  title={Effect of endodontic preflaring on electronic determination of working length},  volume={26},  ISSN={1980-6523},  url={https://doi.org/10.1590/S1980-65232011000200012},  DOI={10.1590/S1980-65232011000200012},  number={2},  journal={Revista Odonto Ciência},  publisher={Pontifícia Universidade Católica do Rio Grande do Sul},  author={Lopez, Fernanda Ullmann and Barletta, Fernando Branco and Fontanella, Vânia Regina Camargo and Grecca, Fabiana Soares},  year={2011},  pages={161–164} }