@article{article03da3109,
title   = {Comparison of three retreatment techniques with ultrasonic activation in flattened canals using micro-computed tomography and scanning electron microscopy},
author = {Bernardes, R. A. and Duarte, Marco Antonio Hungaro and Vivan, Rodrigo Ricci and Alcalde, Murilo Priori and Vasconcelos, B. C. and Bramante, Clovis Monteiro},
year = {2016},
doi = {10.1111/iej.12522},
journal   = {International Endodontic Journal}
}