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Comparison of two ultrasonic instruments for post removal.
Eric B Dixon1, Peter J Kaczkowski, Jack I Nicholls
1Department of Endodontics, School of Dentistry, University of Washington, Seattle 98195, USA.
Journal of Endodontics
|February 9, 2002
Summary
Ultrasonic post removal using specialized tips significantly reduces procedure time. The Enac ultrasonic unit with the ST-09 tip proved more efficient than the Spartan unit for efficient post removal.
Area of Science:
- Dentistry
- Endodontics
- Biomaterials
Background:
- Post-retained restorations are common in endodontically treated teeth.
- Post removal can be challenging, risking root damage.
- Ultrasonic devices offer a potential solution for non-traumatic post retrieval.
Purpose of the Study:
- To compare the clinical effectiveness of two ultrasonic units for post removal.
- To evaluate the efficiency of specialized ultrasonic tips in post vibration.
- To determine the optimal ultrasonic approach for minimizing post removal time and force.
Main Methods:
- Twenty-four extracted cuspids were endodontically treated and restored with posts.
- Posts were cemented, and teeth were divided into control and two ultrasonic treatment groups.
- Ultrasonic vibration was applied using Spartan and Enac units with specific tips for post removal.
Main Results:
- The control group (no ultrasound) required an average force of 40.5 kg for post dislodgement.
- The Spartan unit (group 2) averaged 4:52 min for post removal.
- The Enac unit (group 3) averaged 1:31 min, a statistically significant difference (p < 0.005).
Conclusions:
- Ultrasonic vibration with specialized tips is effective for post removal.
- The Enac ultrasonic unit with the ST-09 tip demonstrated superior efficiency compared to the Spartan unit.
- Optimizing ultrasonic parameters, including tip design and sound level, is crucial for effective post removal.