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Accuracy of endodontic working length determination using cone beam computed tomography
T Connert1, M Hülber-J, A Godt
1Division of Endodontology, Department of Conservative Dentistry, School of Dental Medicine, University of Tübingen, Tübingen, Germany.
International Endodontic Journal
|October 19, 2013
Summary
Cone beam computed tomography (CBCT) accurately measures endodontic working length (WL). This study found CBCT measurements had a mean absolute difference of 0.41 mm compared to real measurements, making it a reliable tool.
Area of Science:
- Dentistry
- Radiology
- Endodontics
Background:
- Accurate endodontic working length (WL) determination is crucial for successful root canal treatment.
- Traditional methods for WL measurement can have limitations.
- Cone beam computed tomography (CBCT) offers advanced imaging capabilities.
Purpose of the Study:
- To assess the precision of endodontic working length (WL) measurements using cone beam computed tomography (CBCT).
- To compare CBCT-derived WL measurements with actual measurements in extracted human teeth.
Main Methods:
- CBCT scans (0.2 mm voxel size) were performed on extracted human teeth in jaw models.
- Real WL was measured using a K-file and micrometer.
- CBCT WL was measured by tracing lines between the apical foramen and cusp tip on the scans.
Main Results:
- The study demonstrated high repeatability and reproducibility for CBCT measurements (<0.5 mm).
- The mean absolute difference between CBCT and real WL measurements was 0.41 mm (99% CI 0.31-0.52 mm).
- CBCT measurements were found to be accurate.
Conclusions:
- A simplified method using CBCT imaging with 0.2 mm voxel size allows for accurate endodontic working length determination.
- CBCT is a viable tool for precise WL measurements in endodontic procedures.
