@article{cavalcante_barbosa_sobral_2013,  title={Evaluation of the susceptibility to pigmentation of orthodontic esthetic elastomeric ligatures},  volume={18},  ISSN={2176-9451},  url={https://doi.org/10.1590/S2176-94512013000200008},  DOI={10.1590/S2176-94512013000200008},  number={2},  journal={Dental Press Journal of Orthodontics},  publisher={Dental Press International},  author={Cavalcante, Janine Soares and Barbosa, Marcelo de Castellucci e and Sobral, Marcio Costa},  year={2013},  month={Mar},  pages={20e1–20e8} }