TY  - JOUR 
T1  - Cervical shaping in curved root canals: comparison of the efficiency of two endodontic instruments
JO  - Pesquisa Odontológica Brasileira
A1  - Busquim, Sandra Soares Kühne
A1  - Santos, Marcelo dos
SN  - 1517-7491
UL  - 10.1590/S1517-74912002000400008
VL  - 16 
Y1  - 2002
PB  - Brazil 
ER  -