@article{varas_zillmann_muñoz_hassi_yévenes_echeverría_maass_quintana_2011,  title={Periodontal status and treatment needs of children from 6 to 8 years old in the Santiago Metropolitan Region of Chile},  volume={26},  ISSN={1980-6523},  url={https://doi.org/10.1590/S1980-65232011000100005},  DOI={10.1590/S1980-65232011000100005},  number={1},  journal={Revista Odonto Ciência},  publisher={Pontifícia Universidade Católica do Rio Grande do Sul},  author={Varas, Francisca and Zillmann, Gisela and Muñoz, Andrea and Hassi, José and Yévenes, Ismael and Echeverría, Sonia and Maass, Paula and Quintana, Renata},  year={2011},  pages={10–15} }