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Accuracy of a 3D Intraoral Scanner in Endodontics
Renata Grazziotin1, Ryan Li1, Thiago Ardenghi2
1Faculty of Dentistry, The University of British Columbia (UBC), Vancouver, BC, Canada.
Summary
An intraoral scanner accurately identified endodontic access opening features like calcifications and defects, showing high diagnostic potential compared to traditional methods. This technology offers a precise tool for endodontic treatment planning and execution.
Area of Science:
- Dentistry
- Endodontics
- Dental Technology
Background:
- Accurate assessment of endodontic access cavities is crucial for successful root canal treatment.
- Traditional methods like clinical microscopy and CBCT have limitations in visualizing fine details within the pulp chamber.
- Advancements in intraoral scanning technology offer potential for improved diagnostic capabilities.
Purpose of the Study:
- To evaluate the accuracy of an intraoral scanner (Primescan) in examining endodontic access openings.
- To compare the scanner's performance against a clinical microscope and Cone-Beam Computed Tomography (CBCT).
- To assess the scanner's ability to identify root canal orifices and internal chamber features.
Main Methods:
- 24 extracted molars underwent endodontic access cavity preparation.
- Intraoral scans were acquired using Primescan immediately after access.
- 3D models were analyzed to document orifice number/location and chamber features (calcifications, defects, anatomical variations).
- Scanner findings were compared to clinical microscope and CBCT data.
Main Results:
- The intraoral scanner demonstrated non-significant differences compared to the microscope and CBCT for identifying orifice number and location, indicating high accuracy.
- Scanner accuracy for detecting defects (bur abrasion) and anatomical features (isthmus) was 87.5% compared to the microscope.
- Diagnostic accuracy for detecting calcified orifices was 79.2% versus the microscope and 70.8% versus CBCT, considered moderate.
Conclusions:
- The Primescan intraoral scanner is accurate for identifying the number and location of root canal orifices.
- The technology shows high accuracy in detecting internal chamber floor defects and anatomical variations.
- Moderate accuracy was observed for detecting calcified orifices, suggesting potential but requiring further validation.
