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The vibratory pattern of ultrasonic files driven piezoelectrically
M Ahmad1, R A Roy, A G Kamarudin
1Department of Conservative Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
International Endodontic Journal
|March 1, 1993
Summary
The Piezon-Master 400 ultrasonic file forms standing waves during operation, similar to older magnetostrictive devices. However, its piezoelectric transducer generates significantly higher displacement amplitudes, potentially due to its unique file holder angle and efficient power transmission.
Area of Science:
- Biomedical Engineering
- Materials Science
Background:
- Ultrasonic endodontic files are used for root canal treatment.
- Previous studies have analyzed magnetostrictive ultrasonic devices.
Purpose of the Study:
- To investigate the oscillation pattern and displacement amplitudes of the Piezon-Master 400 ultrasonic file.
- To compare its performance with the magnetostrictive Cavi-Endo unit.
Main Methods:
- Studied the oscillation of the Piezon-Master 400 file in air and water.
- Measured file displacement amplitudes.
- Compared findings with existing Cavi-Endo data.
Main Results:
- The Piezon-Master 400 file exhibited standing wave patterns with nodes and antinodes, with maximum deflection at the apex.
- Observed oscillation patterns were similar to the Cavi-Endo.
- Displacement amplitudes of the Piezon-Master 400 were substantially higher than the Cavi-Endo.
Conclusions:
- The Piezon-Master 400's piezoelectric transducer and 120-degree file holder angle likely contribute to higher displacement amplitudes.
- Piezoelectric technology may offer enhanced performance in ultrasonic endodontic applications.