Fluorescence imaging based portable early-stage tooth decay diagnosis device and diagnosis method

Abstract

The invention discloses a fluorescence imaging based portable early-stage tooth decay diagnosis device and diagnosis method. The device comprises an excitation light source, an optical filter, an optical lens, a CCD image sensor, an FPGA hardware circuit and an image analysis and diagnosis platform. The excitation light source irradiates a tooth, the optical filter receives autofluorescence generated by the tooth or dental plaques, the optical lens receives fluorescence subjected to optical filtration, the CCD image sensor receives fluorescence passing through the optical lens, the FPGA hardware circuit subjects data of the CCD image sensor to signal conversion, and the image analysis and diagnosis platform receives converted signals and outputs images. By checking of acquired tooth fluorescence images, monitoring of dynamic changes of dental plaque content is realized, the trend is improved before carious cavity formation through preventive measures, and a crucial effect on tooth decay prevention and treatment is achieved. In addition, tooth fluorescence images and diagnosis results are automatically uploaded to a cloud server through a network, a user and a doctor can acquire andcheck examination and diagnosis information at any time, dental health conditions are timely monitored, and an intelligent diagnosis scheme is realized.

Description

technical field [0001] The invention relates to the field of oral treatment, in particular to a diagnostic device and a diagnostic method for oral diseases. Background technique [0002] In the absence of exogenous fluorescent substances, the fluorescent emission produced by fluorophores in biological tissues is called autofluorescence. The main components of teeth, hydroxyapatite and collagen, will undergo autofluorescence when excited by light of a certain wavelength. When dental caries occurs, porphyrins, which are metabolites of dental plaque, also produce autofluorescence. Therefore, early dental caries can be quantitatively detected based on the differences in the autofluorescence spectra of teeth, caries and dental plaque. [0003] With the continuous improvement of people's oral hygiene and health awareness, more and more attention has been paid to dental health. Dental caries is one of the most common diseases that plague people. The acidic substances secreted by...

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Problems solved by technology

[0004] Traditional dental health diagnosis methods include inspection, probe, X-ray film and other non-optical caries detection methods are subjective or destructive, and cannot quantitatively detect the degree of caries

However, the existing methods for detecting early dental caries by using

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