TY  - JOUR 
T1  - Comparison of isthmus detection methods in the apical third of mesial roots of maxillary and mandibular first molars: macroscopic observation versus operating microscope
JO  - Brazilian Dental Journal
A1  - Kontakiotis, Evangelos G.
A1  - Palamidakis, Fotios D.
A1  - Farmakis, Eleftherios-Terry R.
A1  - Tzanetakis, Giorgos N.
SN  - 0103-6440
UL  - 10.1590/S0103-64402010000500009
VL  - 21 
Y1  - 2010
PB  - Brasil 
ER  -