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Accuracy of an electric torque-limiting device for implants.
1Section of Restorative Dentistry, University of California at Los Angeles School of Dentistry 90095. standlee@silcom.com
The International Journal of Oral & Maxillofacial Implants
|April 23, 1999
Summary
The Nobelpharma electric torque controller showed significant torque output variations and inaccuracies. This highlights the need for chairside calibration to ensure accurate torque delivery in clinical settings.
Area of Science:
- Biomedical Engineering
- Dental Device Technology
Background:
- Accurate torque control is crucial for dental implant procedures.
- Existing electric torque controllers may exhibit variability in performance.
Purpose of the Study:
- To evaluate the torque output accuracy of the Nobelpharma electric torque controller.
- To identify discrepancies between nominal and measured torque values.
Main Methods:
- Utilized an Instron test machine with a specialized setup for pure torsion testing.
- Secured devices in a vice for controlled torque application and measurement.
Main Results:
- Significant variations in torque output were observed between individual devices.
- Substantial differences were found between intended and actual measured torque values.
- Torque application errors ranged from 1% to 165%.
Conclusions:
- The Nobelpharma electric torque controller demonstrated significant variability and inaccuracy.
- Clinicians require accessible chairside calibration methods for precise torque delivery.
- Device calibration is essential for ensuring optimal clinical outcomes and patient safety.