@article{bassani_silva_oppermann_2006,  title={Validity of the Community Periodontal Index of Treatment Needs' (CPITN) for population periodontitis screening},  volume={22},  ISSN={0102-311X},  url={https://doi.org/10.1590/S0102-311X2006000200005},  DOI={10.1590/S0102-311X2006000200005},  number={2},  journal={Cadernos de Saúde Pública},  publisher={Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz},  author={Bassani, Diego Garcia and Silva, Carina Maciel da and Oppermann, Rui Vicente},  year={2006},  month={Feb},  pages={277–283} }