Conscious Pet Plaque Quantification Using QLF Imaging
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Solution Overview
Problem
Current methods for assessing plaque in pet animals are costly, time-consuming, require multiple anaesthetics, and are subject to human subjectivity, making them inaccurate and inefficient for evaluating oral care products.
Innovation Solution
A method using Qualitative Light-induced Fluorescence (QLF) technology to detect and quantify dental plaque in conscious pet animals by capturing images of their teeth, allowing for objective assessment without anaesthesia, and enabling shorter trial periods to evaluate the efficacy of oral care products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard clinical methods using anaesthesia and dye staining are used to assess plaque, then plaque detection can be performed, but the method is costly, time-consuming, and requires multiple anaesthetics
Solution Approach 1:
The patent replaces the mechanical/chemical system of anaesthesia and dye staining with a fluorescence-based optical detection system. The QLF device uses fluorescent markers that bind to plaque and emit light when excited by specific wavelengths, allowing objective quantification without anaesthesia or subjective human scoring.
Solution Approach 2:
The patent introduces fluorescent markers as an intermediary substance that binds to plaque and enables detection. These markers serve as a mediator between the plaque (target) and the detection device, allowing indirect but accurate measurement of plaque levels through fluorescence emission.
2Measurement precision
If human scorers subjectively assess plaque coverage using dye staining, then plaque levels can be determined, but the assessment is subject to human subjectivity and reduces accuracy
Solution Approach 1:
The patent replaces the human subjective assessment system with an automated optical detection and image analysis system. The QLF device captures fluorescent images and software automatically quantifies plaque coverage, eliminating human subjectivity while maintaining simplicity through standardized imaging protocols.
Solution Approach 2:
The patent creates an optical copy (fluorescent image) of the plaque distribution on teeth surfaces. Instead of relying on human interpretation of stained teeth, the system captures a fluorescent image copy that can be objectively analyzed by software, preserving all spatial and intensity information without human bias.
3Measurement precision
If trials are extended to 28 days to accurately observe plaque build-up and calculus formation, then product efficacy can be assessed, but the trial period becomes excessively long and costly
Solution Approach 1:
The fluorescent markers serve as sensitive intermediaries that detect early plaque formation at stages invisible to the naked eye or traditional staining methods. This allows accurate measurement of plaque accumulation rates over short periods, enabling product efficacy assessment without waiting 28 days for extensive calculus formation.
Solution Approach 2:
The patent adds the dimension of fluorescence intensity measurement to traditional plaque assessment. By measuring not just presence but intensity of fluorescent signal, the system can detect subtle changes in plaque formation over time, providing sensitive early detection that accelerates trial timelines.
4Measurement precision
If pet animals are placed under general anaesthetic for plaque assessment, then accurate measurement can be obtained, but animal stress and risk increase
Solution Approach 1:
The patent replaces the anaesthesia-based measurement system with a conscious animal fluorescence imaging system. The QLF device is designed to capture images of conscious animals, eliminating the need for anaesthesia while maintaining measurement accuracy through standardized imaging protocols and animal training.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate, objective, and repeatable plaque detection in pet animals, reducing trial duration from 28 days to as little as 3 days, minimizing animal stress, and improving the efficiency and accuracy of oral care product testing.
Implementation Method 1
obtaining one or more images of one or more teeth of a conscious test subject using an image taking device that is capable of detecting fluorescence
Data Source
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AI summary
The present invention relates to methods for detecting and quantifying the plaque levels and/or lesions in companion animals, and the use of such information during trials of oral health products. The methods disclosed enable the trialling of companion animals for a shorter period of time, without the need for long and expensive trials on oral health products to be conducted. The methods described are conducted on conscious pet animals.