@article{oliveira_castro_2012,  title={Influence of anatomical barriers on maxillary incisor root resorption after orthodontic treatment with premolar extractions},  volume={17},  ISSN={2176-9451},  url={https://doi.org/10.1590/S2176-94512012000200015},  DOI={10.1590/S2176-94512012000200015},  number={2},  journal={Dental Press Journal of Orthodontics},  publisher={Dental Press International},  author={Oliveira, Antonio Geraldo de and Castro, Fabiana Guilhermina Ferreira},  year={2012},  month={Mar},  pages={77–82} }