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Updated: Sep 18, 2025

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Semi-Automated Planimetric Quantification of Dental Plaque Using an Intraoral Fluorescence Camera
Published on: January 27, 2023
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Deep Learning for Detecting Dental Plaque and Gingivitis From Oral Photographs: A Systematic Review
Mohammad Moharrami1,2,3, Elaheh Vahab4, Mobina Bagherianlemraski5
1Faculty of Dentistry, University of Toronto, Toronto, Canada.
Community Dentistry and Oral Epidemiology
|June 27, 2025
Summary
Deep learning models show promise for detecting dental plaque and gingivitis using intraoral photos. These artificial intelligence tools excel at plaque detection and could improve teledentistry and early disease screening.
Area of Science:
- Dentistry
- Artificial Intelligence
- Medical Imaging
Background:
- Dental plaque and gingivitis are key indicators of oral health.
- Early detection is crucial for preventing periodontal disease progression.
- Intraoral photography offers a non-invasive method for oral health assessment.
Purpose of the Study:
- To systematically review the performance of deep learning (DL) models in detecting dental plaque and gingivitis.
- To analyze the methodological quality and diagnostic accuracy of DL models using RGB intraoral photographs.
Main Methods:
- Comprehensive literature search across major databases (Medline, Scopus, Embase, Web of Science) up to January 31, 2025.
- Analysis of methodological characteristics and performance metrics of 23 included studies.
- Risk of bias assessment using QUADAS-2 and certainty of evidence evaluation using GRADE framework.
Main Results:
- Deep learning models demonstrated robust performance in dental plaque segmentation (IoU 0.64-0.86, median 0.74), outperforming dentists in some cases.
- Models showed potential for gingivitis detection (IoU 0.43-0.72, median 0.63) but underperformed compared to plaque detection.
- Certainty of evidence was moderate for plaque detection and low for gingivitis detection.
Conclusions:
- Deep learning models show significant potential for detecting dental plaque and gingivitis from intraoral photographs.
- These AI tools, usable with accessible devices like smartphones, can advance teledentistry and early periodontal disease screening.
- Further research is needed to address limitations such as lack of external testing and multicenter validation for real-world application.
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