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Comparing the Capacity of Intraoral Scanner and Expert Scoring in Detecting Potential Deviations in Guided
Pauline Binvignat1, Marine Hénaut2, Lieven Robberecht2
1Faculté d'Odontologie, Université Claude Bernard Lyon 1, Lyon, France; Hospices Civils de Lyon, Lyon, France.
Journal of Endodontics
|March 2, 2025
Summary
Intraoral scanners (IOS) show promise for detecting guided endodontic deviations, often outperforming expert visual assessments, especially for factors like internal offset. This technology could enhance guide fitting accuracy in root canal treatments.
Area of Science:
- Dental Technology
- Endodontics
- Medical Device Evaluation
Background:
- Guided endodontics offers a conservative approach for root canal treatment in obliterated canals.
- Guide mispositioning remains a significant challenge in guided endodontics.
- Intraoral scanners (IOS) have been proposed for deviation detection, but their efficacy versus expert assessment is unclear.
Purpose of the Study:
- To compare the deviation risk predicted by IOS versus expert assessment in guided endodontics.
- To identify factors influencing guide positioning errors.
Main Methods:
- 16 3D-printed endodontic guides were evaluated using a design of experiments approach.
- Guide positioning assessed via Trios 4 IOS for angular deviation and by 10 experts using a Likert scale.
- Agreement between IOS and expert scores was calculated based on angular deviation (>2°) and expert ratings.
Main Results:
- Mean angular deviation was 4.32°, influenced most by guide thickness and internal offset.
- Expert scores were most influenced by internal offset, which decreased ratings.
- Agreement between IOS and expert scores averaged 60.6%, with higher agreement for guides with high internal offset.
Conclusions:
- Experts accurately detected positioning errors related to high internal offset.
- IOS demonstrated higher accuracy than experts for other deviation factors.
- IOS holds potential for improving guided endodontic guide fitting in clinical practice.
