TY  - JOUR 
T1  - Influence of anatomical barriers on maxillary incisor root resorption after orthodontic treatment with premolar extractions
JO  - Dental Press Journal of Orthodontics
A1  - Oliveira, Antonio Geraldo de
A1  - Castro, Fabiana Guilhermina Ferreira
SN  - 2176-9451
UL  - 10.1590/S2176-94512012000200015
VL  - 17 
Y1  - 2012
PB  - Brasil 
ER  -