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Accuracy of Software-Based Three-Dimensional Root Canal Length Measurements Using Cone-Beam Computed Tomography
J P Tchorz1, K T Wrbas1, C Von See2
1Department of Operative Dentistry, Periodontology, and Endodontology, Center for Operative Dentistry, University of Dental Medicine and Oral Health, Danube Private University, Krems, Austria, Department of Operative Dentistry and Periodontology, Center for Dental Medicine, Medical Center, University of Freiburg, Freiburg, Germany.
This study shows that 3D Endo software provides accurate root canal length measurements using cone beam computed tomography (CBCT). Accuracy varied by root canal type, emphasizing the need for clinical verification.
Area of Science:
- Endodontics
- Dental Imaging
- 3D Technology
Background:
- Accurate root canal length determination is crucial for successful endodontic treatment.
- Traditional methods can have limitations in complex root canal anatomy.
- Three-dimensional imaging offers potential for improved measurement accuracy.
Purpose of the Study:
- To evaluate the accuracy of root canal length measurements using 3D Endo software based on cone beam computed tomography (CBCT).
- To assess the influence of dentist experience level on measurement accuracy.
- To determine the precision and trueness of the 3D software in endodontic treatment planning.
Main Methods:
- Sixty-five dentists were trained on 3D Endo software using a CBCT scan of a resin maxillary molar.
- Participants created 3D treatment plans, tracing root canals and simulating instrument placement.
- Differences between planned and actual root canal lengths (ARCL) were calculated to assess accuracy.
Main Results:
- Mean absolute differences between 3D Endo measurements and ARCL were 0.30±0.22 mm, with all within ±1 mm.
- Root canal type significantly influenced measurement accuracy (p<0.0001).
- Palatal roots showed the smallest deviations (0.18±0.13 mm), while second mesiobuccal roots had the largest (0.46±0.24 mm).
Conclusions:
- 3D Endo software facilitates reproducible and accurate root canal length measurements within a 3D endodontic treatment plan.
- Measurement accuracy is influenced by root canal morphology.
- Clinical verification of measurements remains essential despite software accuracy.
