TY  - JOUR 
T1  - Efficacy of passive ultrasonic irrigation in removing root filling material during endodontic retreatment
JO  - Revista de Odontologia da UNESP
A1  - MICHELON, Carina
A1  - FRIGHETTO, Marina
A1  - LANG, Pauline Mastella
A1  - BELLO, Mariana De Carlo
A1  - PILLAR, Rafael
A1  - SERPA, Geraldo Fagundes
A1  - BIER, Carlos Alexandre Souza
SN  - 1807-2577
UL  - 10.1590/1807-2577.02814
VL  - 45 
Y1  - 2016
PB  - Brasil 
ER  -