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Related Experiment Video

Updated: Feb 22, 2026

Semi-Automated Planimetric Quantification of Dental Plaque Using an Intraoral Fluorescence Camera

Semi-Automated Planimetric Quantification of Dental Plaque Using an Intraoral Fluorescence Camera

Published on: January 27, 2023

Red fluorescence imaging for dental plaque detection and quantification: pilot study.

Zhao Liu¹, Juliana Gomez², Soniya Khan²

¹University of Manchester, Colgate Palmolive Dental Health Unit, Williams House, Lloyd Street North,, United Kingdom.

Journal of Biomedical Optics

|September 20, 2017

Summary

Red fluorescence imaging visualizes dental plaque using oral bacteria

Keywords:

RUSBoost classifier autofluorescence imaging computer analysis dental plaque oral hygiene

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Last Updated: Feb 22, 2026

Semi-Automated Planimetric Quantification of Dental Plaque Using an Intraoral Fluorescence Camera

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Published on: January 27, 2023

Ratiometric Imaging of Extracellular pH in Dental Biofilms

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Oral Biofilm Analysis of Palatal Expanders by Fluorescence In-Situ Hybridization and Confocal Laser Scanning Microscopy

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Published on: October 20, 2011

Area of Science:

Biomedical Engineering
Oral Health Diagnostics
Fluorescence Imaging

Background:

Dental plaque visualization traditionally relies on disclosing agents.
Oral bacteria produce porphyrins, which exhibit red fluorescence.
This natural fluorescence offers a potential alternative for plaque detection.

Purpose of the Study:

To develop and evaluate a red fluorescence imaging system for dental plaque visualization and assessment.
To determine the correlation between red fluorescence imaging and clinical plaque scoring.
To assess the potential of this technology for objective oral hygiene evaluation.

Main Methods:

Two studies were conducted involving healthy participants abstaining from oral hygiene.
A molecular spectrometer identified optimal wavelengths for plaque fluorescence.
A red fluorescence imaging system was developed and tested, with plaque assessed clinically and by computer analysis.

Main Results:

Red fluorescence plaque levels increased with accumulation over 48 hours.
Significant differences in plaque progression were detected by both clinical assessment and computer analysis.
Moderate correlations were found between clinical plaque levels and red fluorescence measurements.

Conclusions:

Red fluorescence imaging shows promise as an objective method for assessing oral hygiene.
The technology correlates with clinical diagnosis, offering a potential alternative to disclosing agents.
Further development could lead to improved plaque detection and management tools.