Quantification of dental plaque on lingual tooth surfaces using image analysis: reliability and validation

Area of Science:

• Dental research
• Clinical trials
• Image analysis in dentistry

Background:

• Accurate dental plaque measurement is crucial for clinical trials.
• Existing plaque quantification methods can be time-consuming.
• Image analysis offers potential for improved efficiency and reliability.

Purpose of the Study:

• To validate and enhance the versatility of an image analysis method for dental plaque measurement.
• To test the reliability of this method against established dental plaque quantification techniques.
• To assess its utility in a clinical trial setting.

Main Methods:

• Digital images of anterior teeth (labial and lingual surfaces) were acquired from 40 subjects.
• Plaque was quantified using a modified image analysis method, validated against Turesky and Addy plaque indices.
• Intra- and inter-operator reliability were assessed using Fliess' coefficient, and Pearson's correlation was used for validation.

Main Results:

• The image analysis method demonstrated excellent intra- and inter-operator reliability.
• Pearson's correlation coefficients indicated a highly significant similarity between the image analysis method and the two established indices.
• The method proved reliable for measuring plaque on lingual surfaces of anterior teeth.

Conclusions:

• The validated image analysis method is reliable for quantifying dental plaque on anterior teeth, including lingual surfaces.
• This method provides comparable trial conclusions to traditional methods with reduced clinician time.
• The image analysis approach generates a permanent database of images for future research and analysis.