@article{seixas_costa-pinto_araújo_2012,  title={Gingival esthetics: an orthodontic and periodontal approach},  volume={17},  ISSN={2176-9451},  url={https://doi.org/10.1590/S2176-94512012000500025},  DOI={10.1590/S2176-94512012000500025},  number={5},  journal={Dental Press Journal of Orthodontics},  publisher={Dental Press International},  author={Seixas, Máyra Reis and Costa-Pinto, Roberto Amarante and Araújo, Telma Martins de},  year={2012},  month={Sep},  pages={190–201} }