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PS-OCT-based three dimension visual nonnasality decayed tooth checking device and checking method thereof

A PS-OCT, detection device technology, applied in the coupling of optical waveguides, medical science, dentistry, etc., can solve the problems of limiting the accuracy of early caries diagnosis, patient and doctor injury, low resolution, etc. Ease of diagnosis

Inactive Publication Date: 2009-08-26
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since early dental caries is caused by demineralization inside the teeth, there are no obvious signs on the surface of the teeth. The doctor's manual diagnosis cannot diagnose early dental caries changes. However, although X-ray imaging technology can find the lesions inside the teeth, its resolution is limited. At the same time, it has the disadvantages of radiation pollution and inaccurate positioning, which seriously limits the accuracy of early dental caries diagnosis, and also causes harm to patients and doctors.

Method used

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  • PS-OCT-based three dimension visual nonnasality decayed tooth checking device and checking method thereof
  • PS-OCT-based three dimension visual nonnasality decayed tooth checking device and checking method thereof
  • PS-OCT-based three dimension visual nonnasality decayed tooth checking device and checking method thereof

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Experimental program
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Embodiment 1

[0048] Embodiment 1, detection device

[0049] like figure 1 As shown, the present invention provides a three-dimensional visualization oral caries detection device based on PS-OCT including:

[0050] ——Light source 101: used to irradiate the object under test and generate a measurement light signal with information about the object under test;

[0051] ——Polarization state generator 102: used to adjust the light emitted by the light source to a specific polarization state as required (according to the polarization properties of optical fibers, devices and samples to be measured, so that the obtained output signal is clear);

[0052] ——Fiber optic circulator 103: port 1 is used to receive the light emitted by the light source and output it from port 2;

[0053] ——Self-focusing lens 104: connected to port 2 of the optical fiber circulator, and its exit end face has a certain reflectivity, which is used to irradiate the light output from port 2 of the optical fiber circulator ...

Embodiment 2

[0064] Embodiment 2, detection method

[0065] like figure 2 The overall structure of the PS-OCT 3D visualization platform shown mainly includes two parts: hardware and software.

[0066] The three-dimensional visualization oral caries detection method based on PS-OCT includes in turn:

[0067] 1. Place the tooth sample of the measured object on the displacement platform;

[0068] 2nd, turn on the light source 101, adjust the polarization generator 102, the light that the light source 101 sends is adjusted to a specific polarization state as required (adjust according to the polarization properties of the optical fiber, the device and the sample to be tested, so that the output signal obtained is clear) ;

[0069] 3. Let the light beam emitted by the light source pass through the self-focusing lens 104 to generate a reflected light and a transmitted light, so that the transmitted light is irradiated on the measured object;

[0070] 4. The reflected light carrying the info...

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Abstract

The invention provides a PS-OCT-based three dimension visual nonnasality decayed tooth checking device and a checking method thereof. The method comprises: a polarized light beam is illuminated on an object to be checked by a self-focusing lens, a reflected light carrying the information of the object to be checked returns along the coming way, the reflected light carrying the information of the object to be checked and the reflected light from the exit end face of the self-focusing lens enter into the two arms of an interferometer and return to a coupler through a Faraday polariscope and perform interference; an optical fiber stretcher is adjusted to realize scanning in the longitudinal direction Z and synchronously the object to be checked is scanned in the horizontal direction X by a displacement platform to obtain the two-dimensional information of a certain cross section; the displacement platform is adjusted for carrying out scanning along the direction Y vertical to the cross section to obtain the plural two-dimensional images of different parts of the representative sample; the data is analyzed and processed with a software to obtain the structure and birefringence information of the object to be checked and reconstruct the three dimensional image thereof, and the result is displayed. The invention can realize high precise checking on the teeth without radiation, thus facilitating diagnosis on the decayed tooth.

Description

【Technical field】: [0001] The invention belongs to the technical field of detection of oral caries diseases, and relates to PS-OCT (polarization-sensitive optical coherence tomography) technology and a method and device for three-dimensional reconstruction of oral caries structures. 【Background technique】: [0002] OCT (Optical Coherence Tomography) technology has developed rapidly in recent years. It is another new biological tissue imaging technology following ultrasound, X-ray computed tomography (XCT), and magnetic resonance imaging (MRI). It integrates confocal microscopy technology and ultra-sensitive detection technology, and combines automatic control and computer image processing technology to realize non-destructive testing of living organisms and obtain high-resolution cross-sectional images of the internal microstructure of biological tissues. [0003] Caries is a common and frequently-occurring disease of the oral cavity worldwide, and it is the main cause of or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C19/04G02F1/095G02B6/34
Inventor 姚晓天刘铁根梁燕姚晖李燕妮江俊峰兰寿锋石博雅梁雨
Owner TIANJIN UNIV
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