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Comparison between two ultrasonic units in shaping curved canals in teeth using macroradiography
1Department of Conservative Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
Endodontics & Dental Traumatology
|April 1, 1991
Summary
The Enac ultrasonic unit created more apical canalled elbows than the Cavi-Endo unit, though both removed dentine similarly. No significant differences were found in instrumentation time or canal enlargement between the two ultrasonic units.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Ultrasonic units are used for root canal shaping.
- Effective shaping of curved root canals remains a challenge in endodontics.
Purpose of the Study:
- To compare the efficacy of two ultrasonic units, Cavi-Endo and Enac, in shaping curved root canals.
- To evaluate dentine removal patterns and the incidence of canalled elbows.
Main Methods:
- Twenty teeth were instrumented with the Cavi-Endo unit and twenty with the Enac unit.
- Pre- and post-instrumentation radiographs were analyzed using subtraction technique for canal shape evaluation.
- Dentine removal, canal enlargement, apical deviation, and elbow formation were assessed.
Main Results:
- Both units showed similar dentine removal patterns, with more removal at the coronal end.
- The Enac group exhibited a higher incidence of apical elbows compared to the Cavi-Endo group.
- No significant differences were observed in instrumentation time, coronal/apical enlargement, or apical deviation.
Conclusions:
- The Enac unit may lead to a greater incidence of apical elbows in curved canal shaping compared to Cavi-Endo.
- Both ultrasonic units demonstrate comparable performance in terms of instrumentation time and overall canal enlargement.
- Findings suggest that ultrasonic unit choice may influence canalled elbow formation in curved canals.