@article{article7a84325e,
title   = {Atypical extraction of maxillary central incisors},
author = {Janson, Guilherme and Valarelli, Danilo Pinelli and Valarelli, Fabrício Pinelli and Freitas, Marcos Roberto de and Pinzan, Arnaldo},
year = {2010},
doi = {10.1016/j.ajodo.2008.08.042},
journal   = {American Journal of Orthodontics and Dentofacial Orthopedics}
}