TY  - JOUR 
T1  - Over-the-counter whitening agents: a concise review
JO  - Brazilian Oral Research
A1  - Demarco, Flávio Fernando
A1  - Meireles, Sônia Saeger
A1  - Masotti, Alexandre Severo
SN  - 1806-8324
UL  - 10.1590/S1806-83242009000500010
VL  - 23 
Y1  - 2009
PB  - Brazil 
ER  -