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[The ultrasonic treatment of curved, fine and obstructed root canal]
Objective:
To investigate and evaluate the method of managing curved, fine, and obstructed root canals during endodontic treatment.
Methods:
Ultrasonic treatment of such root canals was used in 73 cases.
Results:
The root canals were enlarged and filled in 69 cases, with a success rate of 94.5%. Fracture of the tooth, lateral perforation of the canal, and breaking of the reamer were not found. Failure occurred in 4 cases where the canals were obstructed.
Conclusion:
The ultrasonic treatment of root canal is an effective, practical, and safe method. Nevertheless, its use in curved and severely obstructed root canals is limited.
