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Comparison of radiographic and electronic working lengths
1Department of Endodontics, University of Maryland at Baltimore 20101-1586, USA.
Journal of Endodontics
|April 1, 1996
Summary
Electronic apex locators offer slightly more reliable root canal length determination than radiography. This study found apex locators had less deviation from the ideal termination point, improving endodontic treatment accuracy.
Area of Science:
- Endodontics
- Dental Imaging
- Histology
Background:
- Accurate determination of root canal working length is crucial for successful endodontic therapy.
- Radiographic and electronic methods are commonly used to locate the apical constriction, but their reliability varies.
Purpose of the Study:
- To compare the reliability of radiographic and electronic apex locator methods in determining the apical constriction's location.
- To assess the accuracy of each method against histological findings.
Main Methods:
- Root canal working length was initially determined using an electronic apex locator in human cadaver teeth.
- Teeth were radiographed with an endodontic file in place at various angles.
- Five examiners identified radiographic termination points, which were then compared to histological ideal termination points.
Main Results:
- The mean deviation from the apical constriction was significantly less (p < 0.05) for the apex locator method compared to the radiographic method.
- Electronic apex locators demonstrated slightly higher reliability in pinpointing the apical termination.
Conclusions:
- Electronic apex locators provide a more reliable method for determining root canal working length than traditional radiography.
- This improved accuracy can lead to enhanced outcomes in endodontic procedures.