TY  - JOUR 
T1  - Why do some orthodontic treatments last so long while others do not?
JO  - Dental Press Journal of Orthodontics
A1  - Normando, David
SN  - 2176-9451
UL  - 10.1590/2177-6709.22.2.009-010.edt
VL  - 22 
Y1  - 2017
PB  - Brasil 
ER  -