TY  - JOUR 
T1  - Validity of staining and marginal ditching as criteria for diagnosis of secondary caries around occlusal amalgam restorations: an in vitro study
JO  - Brazilian Dental Journal
A1  - Magalhães, Claudia Silami
A1  - Freitas, Amanda Beatriz Dahdah Aniceto de
A1  - Moreira, Allyson Nogueira
A1  - Ferreira, Efigênia Ferreira
SN  - 0103-6440
UL  - 10.1590/S0103-64402009000400008
VL  - 20 
Y1  - 2009
PB  - Brasil 
ER  -