Caries Detection Imaging Combining Fluorescence and Reflectance
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Solution Overview
Problem
Current dental caries detection methods, particularly fluorescence imaging, face challenges in accurately identifying incipient caries due to poor image contrast between healthy and infected areas, leading to delayed detection and potential tooth damage.
Innovation Solution
The method combines fluorescence and back-scattered reflectance image data to enhance image contrast, utilizing both types of data to pinpoint carious locations more accurately, thereby improving the detection of incipient caries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If fluorescence imaging is used for caries detection, then non-invasive detection is achieved, but image contrast between healthy and infected areas is poor
Solution Approach 1:
The patent combines fluorescence imaging with reflectance imaging to create a composite image that leverages the strengths of both modalities. Fluorescence provides non-invasive detection capability while reflectance contributes to enhanced contrast, allowing early caries detection without compromising either non-invasiveness or image quality
2Device complexity
If traditional visual and tactile examination methods are used, then detection can be performed with simple equipment, but detection accuracy is subjective and varies with practitioner expertise
Solution Approach 1:
The patent introduces an image processing system that acts as an intermediary between the raw imaging data and the final diagnosis. The processing apparatus applies algorithms to enhance contrast and highlight carious areas, reducing dependence on practitioner subjectivity while maintaining equipment simplicity
3Measurement precision
If radiographic (x-ray) imaging is used for caries detection, then internal tooth structure can be visualized, but exposure to x-ray radiation occurs
Solution Approach 1:
The patent converts the potentially harmful x-ray radiation into a beneficial alternative by using optical imaging methods. The fluorescence and reflectance imaging techniques provide sufficient contrast to detect caries without ionizing radiation, while the image processing enhances the visualization capability to match or exceed traditional x-ray methods
4Loss of time
If fluorescence imaging alone is used, then early caries detection is attempted, but contrast enhancement is insufficient for incipient caries
Solution Approach 1:
The patent adds another dimension to the imaging approach by incorporating reflectance imaging alongside fluorescence. This multi-dimensional approach provides additional contrast mechanisms that are particularly effective for incipient caries, enabling early detection with sufficient contrast enhancement
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
This approach allows for earlier and more accurate detection of caries, enabling preventive measures like remineralization before more complex restorative interventions are necessary, enhancing diagnostic value over conventional methods.
Implementation Method 1
directing incident light toward a tooth, wherein the incident light excites a fluorescent emission from the tooth tissue
Implementation Method 2
obtaining, from back-scattered light, back-scattered reflectance image data from the tooth tissue
Data Source
AI summary
A method for obtaining an image of tooth tissue directs incident light toward a tooth, wherein the incident light excites a fluorescent emission from the tooth tissue. Fluorescence image data is obtained from the fluorescent emission. Back-scattered reflectance image data is obtained from back-scattered light from the tooth tissue. The fluorescence and back-scattered reflectance image data are combined to form an enhanced image of the tooth tissue for caries detection.