Comparison of three retreatment techniques with ultrasonic activation in flattened canals using micro-computed tomography and scanning electron microscopy.

Ricardo Affonso BernardesM A H DuarteR R VivanM P AlcaldeB C VasconcelosC M Bramante

Published in: International endodontic journal (2015)

None of the instrumentation methods were able to completely remove root filling material. Ultrasonic activation improved the removal of root filling material in all groups.

Keyphrases

electron microscopy
computed tomography
magnetic resonance imaging
high resolution