TY  - JOUR 
T1  - Tooth extractions in Orthodontics: first or second premolars?
JO  - Dental Press Journal of Orthodontics
A1  - Araújo, Telma Martins de
A1  - Caldas, Luciana Duarte
SN  - 2176-9451
UL  - 10.1590/2177-6709.24.3.088-098.bbo
VL  - 24 
Y1  - 2019
PB  - Brasil 
ER  -