title: Variations in power output of the Piezon-Master 400 ultrasonic endodontic unit.
abstract: The present study was undertaken to see if there was any variability in the power output of Piezon-Master 400 ultrasonic files when driven using different generators, tranducers and file holders. The displacement amplitude of the oscillating tip of the file in air was used as a measure of the power output. The results showed that there was considerable variability in the power output of Piezon-Master 400 ultrasonic files of similar size and length when driven using different generators, transducers and file holders. In consideration of this, it is recommended that a calibration device be incorporated in the ultrasonic unit so that the operator will have some knowledge of when the unit is working at its maximum efficiency.
authors: Department of Conservative Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
authors: M
authors: M
authors: Ahmad
authors: R A
authors: RA
authors: Roy
authors: A G
authors: AG
authors: Kamarudin
mesh_terms: D004553:Electric Conductivity; D011211:Electric Power Supplies; D012390:Root Canal Therapy / Q000295:instrumentation*; D014159:Transducers; D014464:Ultrasonic Therapy / Q000295:instrumentation*