A Semi-Automated Method for Measuring Biofilm Accumulation on the Teeth Using Quantitative Light-Induced Fluorescence...

Area of Science:

• Veterinary Dentistry
• Biophotonics
• Animal Health Technology

Background:

• Oral health issues like gingivitis are common in companion animals, causing pain and illness.
• Oral biofilm accumulation is a key factor in the progression of these dental conditions.
• Quantitative light-induced fluorescence (QLF) offers a method to measure oral substrate accumulation and assess product efficacy.

Purpose of the Study:

• To evaluate the utility of Quantitative light-induced fluorescence (QLF) for semi-automated quantification of oral biofilm in companion animals.
• To demonstrate QLF's ability to differentiate between dental diets with varying effects on oral substrate accumulation.
• To assess the reproducibility and accuracy of QLF software compared to traditional grading methods.

Main Methods:

• Digital images of oral substrate accumulation on dog and cat teeth were captured using QLF over time and with different diets.
• Newly developed software quantified biofilm coverage from the QLF images.
• Intra- and intergrader reproducibility was assessed, alongside a comparison with an experienced grader's assessment.

Main Results:

• QLF successfully distinguished between dental diets known to differentially inhibit oral biofilm accumulation.
• The QLF software demonstrated high intra- and intergrader reproducibility with low variance.
• A concordance correlation coefficient of 0.89 (95% CI = 0.84, 0.92) was found between QLF software and an experienced grader.

Conclusions:

• Quantitative light-induced fluorescence (QLF) is a valuable tool for semi-automated quantification of oral biofilm in companion animals.
• This technology can reliably assess the impact of different products or diets on oral biofilm accumulation.
• QLF offers a promising approach to advance research and product development in veterinary dental health.