CN202458761U - Dental plaque detecting device - Google Patents
Dental plaque detecting device Download PDFInfo
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- CN202458761U CN202458761U CN2011205238732U CN201120523873U CN202458761U CN 202458761 U CN202458761 U CN 202458761U CN 2011205238732 U CN2011205238732 U CN 2011205238732U CN 201120523873 U CN201120523873 U CN 201120523873U CN 202458761 U CN202458761 U CN 202458761U
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Abstract
The utility model discloses a dental plaque detecting device. The dental plaque detecting device comprises a light source (2), an illuminating system (4), an imaging system (5), a light path beam splitter (6), an imaging device (7), a high pass optical filter (8), an area array detector (9), a control system (10) and a display device (11). The light source (2) provides light containing an ultraviolet light band. The illuminating system (4), the light path beam splitter (6) and the imaging system (5) are installed orderly along a direction of the projecting light of the light source (2). Light sent by the light source (2) is reshaped by the illuminating system (4) and irradiates vertically on a tested tooth specimen (1) through the light path beam splitter (6) and the imaging system (5). The fluorescent light activated is reflected by the light path beam splitter (6) through the imaging system (5) and the light path beam splitter (6). The incident axis of the fluorescent light and the beam splitter (6) form an angle of 45 degrees. The imaging device (7), the high pass optical filter (8), and the area array detector (9) are orderly installed in a reflective direction of the light path beam splitter (6). The area array detector (9) is connected with the control system (10) and the control system (10) is connected with the display device (11).
Description
Technical field
This utility model belongs to stomatology checkout gear technical field, is specifically related to a kind of dental plaque checkout gear based on the imaging of face battle array.
Background technology
Dental plaque is a kind of biomembrane that sticks on dental surface or other soft tissues of oral cavity, comprises a large amount of antibacterials, intercellular substance, come off epithelial cell and food detritus etc., is the main paathogenic factor of dental caries and periodontal disease.Therefore, the control dental plaque is one of effective way of prevention oral disease.But, with the naked eye being difficult to observe dental plaque, the detection for dental plaque at present mainly contains following several kinds:
1, bacterial plaque sampling in-vitro measurements method: scrape sampling originally through meticulous apparatus; Detect under the state of exsomatizing; It can be divided into traditional bacteria culture method, PCR method, bacterial plaque pH value detection method again, and these class methods belong to the in-vitro measurements method, and each has pluses and minuses above-mentioned three kinds of methods; But the three all need possess certain test conditions, be difficult for to obtain simple, reliable, comprehensively, can repeat, visual measurement result.
2, implanted electrode telemetry: this method need be imbedded the enamel fritter that exsomatizes with microelectrode, puts into artificial tooth, can be used for measuring the pH value dynamic change in the dental plaque forming process.But the electrode structure of burying storage is complicated, specification requirement is higher, and requires the oral cavity that enough spaces must be arranged.
3, developer method: adopt plaque disclosing agent dyeing; Colourless bacterial plaque attached to facing is intuitively shown; This method is a detection method comparatively commonly used clinically; But this method requires to smear or chew stain in the subject oral cavity, and its testing result receives the influence of dyeing time and buccal muscular movement; In addition, the result of record also do not possess intuitively, comprehensively, quantitative characteristic.
Utilize the existing related patent U.S. Patent No. technology of method of fluoroscopic examination dental plaque open.Tooth is ultraviolet ray excited following, because endogenous fluorophor hydroxyapatite that itself contains and Organic substance etc. can produce the AF of the visible region of peak wavelength about 500nm.The QLF dental caries detector of Holland Inspektor company research and development promptly is to utilize this principle exploitation.The dental plaque biomembrane that oral cavity bacterium constitutes owing to exist porphyrin plain, also can produce AF under ultraviolet excitation.And find that after deliberation actinomyces dentocariosus, bacteroides intermedius, corynebacterium and Candida albicans etc. all can be at the red peak fluorescence of the generation 600-700nm under the 405nm ultraviolet excitation.Therefore, can utilize this phenomenon that dental plaque is detected.
There is endogenous in the source of fluorescence and adds two kinds of fluorescent agents.American documentation literature US2011/0070561A1 (" DENTAL PALQUE DETECTION SYSTEM AND DETNAL PLAQUE DETECTION METHOD ") and american documentation literature US2011/0151409 (" device and method for detecting plaque in the oral cavity ") all adopt and add outside fluorescent agent; Dental plaque is bonded together with it; Through exciting of certain wavelength, survey the detection that fluorescence intensity realizes dental plaque.American documentation literature US006024562A (" device for the recognition of caries; plaque or bactrerial infection on teeth ") utilize the detection of the fluorescence intensity of tooth endogenous fluorophor between 640-670nm; Point is surveyed, the laser dental caries detector DIAGNOdent of the German KAVO company development of clinical practice at present just.
Chinese patent document CN1309545 discloses a kind of " being used for the toothbrush that has fluorescent apparatus that dental plaque detects ", and in dental surface scanning, the excitation source wavelength is surveyed wavelength at about 540-550nm and 610-620nm at 470 ± 40nm.The record fluorescence intensity through comparing the fluorescence intensity level of each point, obtains the biogenic deposit difference quantitatively on the tooth surface.But this utility model detects dental plaque through the fluorescent energy on contrast different dental surface, has relative property.
Summary of the invention
This utility model provides a kind of the cannot-harm-detection device of utilizing the dental plaque detection of tooth AF face battle array imaging; Its name is called the dental plaque checkout gear; It can carry out direct detection to the distribution and the content of dental plaque; And show result of detection with the form of image, have contactless property, visual, can be quantitative etc. advantage.
This utility model is taked following technical scheme: the dental plaque checkout gear; Comprise light source (2), illuminator (4), imaging system (5), light path beam splitter (6), imaging device (7), high-pass filter (8), planar array detector (9), control system (10), display device (11); Light source (2) provides the light that comprises the ultraviolet light wave band; The throw light direction of light source (2) is installed illuminator (4), light path beam splitter (6), imaging system (5) successively, light that light source (2) sends through illuminator (4) shaping after, and through light path beam splitter (6) and imaging system (5) back vertical irradiation on tested tooth samples (1); After the fluorescence process imaging system (5) and light path beam splitter (6) that is inspired; By light path beam splitter (6) reflection, the incident light axis of fluorescence and beam splitter (6) are 45 degree, and light path beam splitter (6) reflection direction is installed imaging device (7), high-pass filter (8) and planar array detector (9) successively; Planar array detector (9) links with control system (10), and control system (10) links with display device (11).
Preferably, between light source (2) and the illuminator (4) narrow band pass filter (3) is set.
Preferably, illuminator (4) is parallel beam expand device or homogenization illuminator.
Preferably, planar array detector (9) is digital receptors such as CCD or CMOS, perhaps, and for being used for enhancement mode CCD or the CMOS receptor that small-signal is surveyed.
Preferably, the wave-length coverage of light source (2) is 360nm-410nm, and the wavelength of fluorescence is 600nm-800nm.
Preferably; Control system (10) comprises pre-processing image data module, FIFO control module, FIFO memorizer; The pre-processing image data module receives the data from planar array detector, and the FIFO memorizer is sent in the conversion of the line data form of going forward side by side; Under the control of FIFO control module, data are kept in, and show through display device.
The invention also discloses another kind of technical scheme: the dental plaque checkout gear; Comprise light source (2), illuminator (4), imaging system (5), light path turnover device (6), imaging device (7), high-pass filter (8), planar array detector (9), control system (10), display device (11); Light source (2) provides the light that comprises the ultraviolet light wave band; The throw light direction of light source (2) is installed illuminator (4); Be radiated on the tested tooth samples (1) through illuminator (4) shaping rear-inclined, after the fluorescence process imaging system (5) and light path turnover device (6) that is inspired, by light path turnover device (6) reflection; The incident light axis of fluorescence and light path turnover device (6) are 45 degree; Light path turnover device (6) reflection direction is installed imaging device (7), high-pass filter (8) and planar array detector (9) successively, and planar array detector (9) links with control system (10), and control system (10) links with display device (11).
Preferably, between light source (2) and the illuminator (4) narrow band pass filter (3) is set.
Preferably; Control system (10) comprises pre-processing image data module, FIFO control module, FIFO memorizer; The pre-processing image data module receives the data from planar array detector, and the FIFO memorizer is sent in the conversion of the line data form of going forward side by side; Under the control of FIFO control module, data are kept in, and show through display device.
Preferably, light path turnover device (6) is illuminator or corner cube prism.
This utility model utilizes the dental plaque checkout gear of face battle array imaging; Dental plaque produces the fluorescence spectrum in HONGGUANG zone under ultraviolet excitation; Get rid of the influence of surround lighting and exciting light through optical filter; The red-light spectrum that only dental plaque is produced is carried out the imaging of face battle array, in order to the plaque distribution and the content of sign dental surface.This utility model can realize that the real non-destructive of oral plaque detects, and shows testing result with the form of digital picture, has advantages such as visual, noncontact, interactivity be strong, can be used for the daily oral cavity health of early prevention and family of dental caries etc.
Utilize in the dental plaque checkout gear of face battle array imaging; Light source can provide ultraviolet light wave band spectrum, like the xenon lamp of LED, laser instrument, continuous spectrum, deuterium lamp, tungsten lamp etc., behind the ultraviolet light wave band that extracts exciting light; Be radiated at dental surface through illuminator; Illuminator provides the dental surface result of evenly throwing light on, and institute's excited fluorescent comprises the contribution of fluorophor of inorganic matter and the Organic substance and the dental plaque of tooth itself, behind imaging system and light path beam splitter or light path turning device; Dental surface imaging is accepted on the face planar array detector; Wherein between planar array detector and light path beam splitter or light path turning device, place filtering apparatus, to get rid of the AF of exciting light and tooth, the characteristic spectrum that only dental plaque is produced is carried out to picture.The content of its intensity reaction bacterial plaque.The view data process control system that planar array detector obtains is real-time display image result in the liquid crystal digital display device finally.How much can representing of bacterial plaque content with pseudo-colours.
This utility model utilizes the face battle array formation method of dental plaque characteristic spectrum; It can objective reaction dental plaque distribution situation; And with the content of fluorescence intensity sign bacterial plaque; Final testing result shows with the form of image, and is significant with the prevention oral disease for instructing oral cavity health.
Description of drawings
Fig. 1 is the structural representation of embodiment one.
Fig. 2 is the structural representation of embodiment two.
Fig. 3 is the structural representation of embodiment three.
Fig. 4 is the structural representation of embodiment four.
Fig. 5 be control system (10) functional module and with the figure that connects of face battle array controller, display device.
Among the figure: the tested tooth samples of 1-; The 2-light source; The 3-narrow band pass filter; 4-homogenization illuminator; The 5-imaging system; 6-light path turnover device/light path beam splitting device; The 7-imaging device; The 8-high-pass filter; The 9-planar array detector; The 10-control system; The display device of 11-liquid crystal digital.
The specific embodiment
Utilize the dental plaque checkout gear of face battle array imaging, different according to light source and lighting system have various embodiments, below in conjunction with accompanying drawing, following several kinds of typical embodiment are specified:
Embodiment one: Fig. 1 has shown that light source is the embodiment of the face battle array imaging dental plaque checkout gear of continuous light source vertical illumination; It comprises that light source 2, narrow band pass filter 3, homogenization illuminator 4, imaging system 5, light path beam splitter are beam splitter 6, imaging device 7, high-pass filter 8, planar array detector 9, control system 10, liquid crystal digital display device 11; Continuous light source 2 provides the illumination light with continuous spectrum that comprises the ultraviolet light wave band; Like xenon lamp, deuterium lamp, tungsten lamp etc.; The throw light direction of light source 2 is installed narrow band pass filter 3, homogenization illuminator 4, beam splitter 6, imaging system 5 successively; Extract the ultraviolet light that excites in the 360-410nm wave band behind the light process ultraviolet narrow band pass filter 3 that continuous light source 2 sends; Behind 4 pairs of beam shapings of homogenization illuminator, and vertical irradiations are on tested tooth samples 1 after process beam splitter 6 and the imaging system 5, and beam splitter settles direction and incident illumination optical axis direction to be 45 degree.After the fluorescence process imaging system 5 and beam splitter 6 that is inspired; Reflected towards planar array detector 9 directions by beam splitter 6; Beam splitter 6 reflection directions are installed imaging device 7, high-pass filter 8 and planar array detector 9 successively, the receiving plane image conjugation of tested tooth samples 1 and planar array detector 9.After imaging device 7 and high-pass filter 8, received by planar array detector 9, thereby the fluorescence that inspires is imaged on the receiving plane of planar array detector 9 through imaging system 5 and imaging device 7.Planar array detector 9 is digital receptors such as CCD or CMOS, perhaps, and for being used for enhancement mode CCD or the CMOS receptor that small-signal is surveyed.At tested tooth samples 1 and 9 of planar array detectors beam splitter 6 is set, to realize, to the visible light wave range reflection that inspires to incident uv excitation light transmission.High-pass filter 8 is set to extract the dental plaque characteristic fluorescence between the 600-800nm before planar array detector.Planar array detector 9 links with control system 10, and control system 10 links with liquid crystal digital display device 11 again, and liquid crystal digital display device 11 is the digital type display devices that are independent of personal computer.The view data that planar array detector 9 obtains is controlled by control system 10, and through the form demonstration result of detection of liquid crystal digital display device 11 with image.Conversion, storage that control system 10 is responsible for view data; Fig. 5 be based on FPGA control system theory diagram and with the connection layout of planar array detector, liquid crystal digital display device; Control system 10 comprises pre-processing image data module, FIFO control module, FIFO memorizer; Its front end links to each other with CMOS or CCD digital picture detector, and its rear end links to each other with the liquid crystal digital display device.The pre-processing image data module receives the data from CMOS or CCD digital picture detector; The go forward side by side conversion of line data form; Send into the FIFO memorizer, under the control of FIFO control module, data are kept in, and show according to the requirement of liquid crystal digital display device.Control system 10 included pre-processing image data modules, FIFO control module, FIFO memorizer can adopt prior art.
Embodiment two: Fig. 2 has shown that light source is the example structure sketch map of the face battle array imaging dental plaque checkout gear of arrowband ultraviolet source vertical illumination, and its light source 2 is the narrow-band light source of ultraviolet band, like LED, laser instrument etc.
Vertical irradiation was on tested tooth samples 1 after ultraviolet narrow-band light source 2 was sent the 4 pairs of beam shapings of exciting light process homogenization illuminator between the 360-410nm.The fluorescence that inspires is imaged on the receiving plane of planar array detector 9 through imaging system 5 and imaging device 7.At tested tooth samples 1 and 9 of planar array detectors beam splitter 6 is set, to realize, to the visible light wave range reflection that inspires to incident uv excitation light transmission.The dental plaque characteristic fluorescence that optical filter 8 extracts between the 600-800nm is set before planar array detector.
Compare with embodiment one, present embodiment does not have narrow band pass filter 3, but other content reference implementation example one.
Embodiment three: Fig. 3 has shown that light source is the example structure sketch map of the face battle array imaging dental plaque checkout gear of continuous light source oblique illumination; It comprises light source 2, narrow band pass filter 3, homogenization illuminator 4, imaging system 5, light path turnover device 6 (it can be illuminator, corner cube prism), imaging device 7, high-pass filter 8, planar array detector 9, control system 10, liquid crystal digital display device 11; Continuous light source 2 provides the illumination light with continuous spectrum that comprises the ultraviolet light wave band; Like xenon lamp, deuterium lamp, tungsten lamp etc.; The throw light direction of light source 2 is installed narrow band pass filter 3, homogenization illuminator 4 successively; Extract the ultraviolet light that excites in the 360-410nm wave band behind the light process ultraviolet narrow band pass filter 3 that continuous light source 2 sends; Be radiated on the tested tooth samples 1 through 4 pairs of beam shaping rear-inclineds of homogenization illuminator, the angle of inclination is as the criterion so that the illumination of tooth samples upper surface can be provided.The fluorescence projecting direction that is inspired is installed imaging system 5, light path turnover device 6 successively, and light path turnover device 6 settles direction and incident illumination optical axis direction to be 45 degree.Behind institute's excited fluorescent process imaging system 5 and the light path turnover device 6; Reflected towards planar array detector 9 directions by light path turnover device 6; Light path turnover device 6 reflection directions are installed imaging device 7, high-pass filter 8 and planar array detector 9, the receiving plane image conjugation of tested tooth samples 1 and planar array detector 9 successively.After imaging device 7 and high-pass filter 8, received by planar array detector 9, thereby the fluorescence that inspires is imaged on the receiving plane of planar array detector 9 through imaging system 5 and imaging device 7.Planar array detector 9 is digital receptors such as CCD or CMOS, perhaps, and for being used for enhancement mode CCD or the CMOS receptor that small-signal is surveyed.High-pass filter 8 is set to extract the dental plaque characteristic fluorescence between the 600-800nm before planar array detector.Planar array detector 9 links with control system 10, and control system 10 links with liquid crystal digital display device 11 again, and liquid crystal digital display device 11 is the digital type display devices that are independent of personal computer.The view data that planar array detector 9 obtains is controlled by control system 10, and through the form demonstration result of detection of liquid crystal digital display device 11 with image.
But other content reference implementation example one of present embodiment.
Embodiment four: Fig. 4 has shown that light source is the example structure sketch map of the face battle array imaging dental plaque checkout gear of narrow-band light source oblique illumination.Exciting light between the 360-410nm that narrow-band light source 2 is sent like LED, laser instrument etc. is radiated on the tested tooth samples 1 through 4 pairs of beam shaping rear-inclineds of homogenization illuminator.Be imaged on the receiving plane of planar array detector 9 after the fluorescence process imaging system 5 that inspires, light path turnover device 6, imaging system 7, the high-pass filter 8.Before planar array detector, place optical filter 8, to extract the dental plaque characteristic fluorescence between the 600-800nm.
Compare with embodiment three, present embodiment does not have narrow band pass filter 3, but other content reference implementation example three.
This utility model utilizes the dental plaque checkout gear of face battle array imaging; It utilizes the ultraviolet source irradiation dental surface; Tooth and dental plaque all produce AF; Utilize characteristic fluorescence that dental plaque produces sign, be carried out to picture through fluorescence distribution, and show the distribution and the content situation of dental plaque with the form of digital picture at least one dental surface of specific band as its existence.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining this utility model; And be not as the qualification to this utility model, as long as in the scope of this utility model, to the variation of above embodiment, the protection domain that modification all will drop on this utility model.
Claims (8)
1. dental plaque checkout gear; It is characterized in that comprising light source (2), illuminator (4), imaging system (5), light path beam splitter (6), imaging device (7), high-pass filter (8), planar array detector (9), control system (10), display device (11); Light source (2) provides the light that comprises the ultraviolet light wave band; The throw light direction of light source (2) is installed illuminator (4), light path beam splitter (6), imaging system (5) successively, light that light source (2) sends through illuminator (4) shaping after, and through light path beam splitter (6) and imaging system (5) back vertical irradiation on tested tooth samples (1); After the fluorescence process imaging system (5) and light path beam splitter (6) that is inspired; By light path beam splitter (6) reflection, the incident light axis of fluorescence and beam splitter (6) are 45 degree, and light path beam splitter (6) reflection direction is installed imaging device (7), high-pass filter (8) and planar array detector (9) successively; Planar array detector (9) links with control system (10), and control system (10) links with display device (11).
2. dental plaque checkout gear as claimed in claim 1 is characterized in that: between described light source (2) and the illuminator (4) narrow band pass filter (3) is set.
3. according to claim 1 or claim 2 dental plaque checkout gear, it is characterized in that: described illuminator (4) is parallel beam expand device or homogenization illuminator.
4. dental plaque checkout gear as claimed in claim 1 is characterized in that: planar array detector (9) is CCD or cmos digital formula receptor, perhaps, and for being used for enhancement mode CCD or the CMOS receptor that small-signal is surveyed.
5. according to claim 1 or claim 2 dental plaque checkout gear, it is characterized in that: the wave-length coverage of light source (2) is 360nm-410nm, the wavelength of said fluorescence is 600nm-800nm.
6. dental plaque checkout gear; It is characterized in that comprising light source (2), illuminator (4), imaging system (5), light path turnover device (6), imaging device (7), high-pass filter (8), planar array detector (9), control system (10), display device (11); Light source (2) provides the light that comprises the ultraviolet light wave band; The throw light direction of light source (2) is installed illuminator (4); Be radiated on the tested tooth samples (1) through illuminator (4) shaping rear-inclined, after the fluorescence process imaging system (5) and light path turnover device (6) that is inspired, by light path turnover device (6) reflection; The incident light axis of fluorescence and light path turnover device (6) are 45 degree; Light path turnover device (6) reflection direction is installed imaging device (7), high-pass filter (8) and planar array detector (9) successively, and planar array detector (9) links with control system (10), and control system (10) links with display device (11).
7. dental plaque checkout gear as claimed in claim 6 is characterized in that: between described light source (2) and the illuminator (4) narrow band pass filter (3) is set.
8. dental plaque checkout gear as claimed in claim 6 is characterized in that: described light path turnover device (6) is illuminator or corner cube prism.
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| CN2011205238732U CN202458761U (en) | 2011-12-15 | 2011-12-15 | Dental plaque detecting device |
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| CN2011205238732U CN202458761U (en) | 2011-12-15 | 2011-12-15 | Dental plaque detecting device |
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| CN2011205238732U Expired - Fee Related CN202458761U (en) | 2011-12-15 | 2011-12-15 | Dental plaque detecting device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102488564A (en) * | 2011-12-15 | 2012-06-13 | 杭州电子科技大学 | Dental plaque detector capable of imaging by aid of fluorescent area arrays |
| CN105852790A (en) * | 2016-04-26 | 2016-08-17 | 郑洪� | Endoscopic device and endoscope |
| CN106092979A (en) * | 2016-05-30 | 2016-11-09 | 杭州电子科技大学 | Detector array is utilized to realize the dental plaque quantitative testing device of fluorescent energy ratio |
| CN106124459A (en) * | 2016-05-30 | 2016-11-16 | 杭州电子科技大学 | The dental plaque quantitative testing device of fluorescence spectrum energy ratio |
| CN107550466A (en) * | 2017-10-20 | 2018-01-09 | 东北师范大学 | A kind of imaging method and system of odontopathy detection |
| CN107708606A (en) * | 2015-06-12 | 2018-02-16 | 高露洁-棕榄公司 | Electric toothbrush and the method for operating electric toothbrush |
| US10646119B2 (en) | 2013-07-11 | 2020-05-12 | Koninklijke Philips N.V. | Plaque location detection in time-resolved fluorescence method and system for plaque detection |
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2011
- 2011-12-15 CN CN2011205238732U patent/CN202458761U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102488564A (en) * | 2011-12-15 | 2012-06-13 | 杭州电子科技大学 | Dental plaque detector capable of imaging by aid of fluorescent area arrays |
| CN102488564B (en) * | 2011-12-15 | 2013-12-18 | 杭州电子科技大学 | Dental plaque detector capable of imaging by aid of fluorescent area arrays |
| US10646119B2 (en) | 2013-07-11 | 2020-05-12 | Koninklijke Philips N.V. | Plaque location detection in time-resolved fluorescence method and system for plaque detection |
| CN107708606A (en) * | 2015-06-12 | 2018-02-16 | 高露洁-棕榄公司 | Electric toothbrush and the method for operating electric toothbrush |
| US10869741B2 (en) | 2015-06-12 | 2020-12-22 | Colgate-Palmolive Company | Electric toothbrush and method for operating an electric toothbrush |
| CN105852790A (en) * | 2016-04-26 | 2016-08-17 | 郑洪� | Endoscopic device and endoscope |
| CN106092979A (en) * | 2016-05-30 | 2016-11-09 | 杭州电子科技大学 | Detector array is utilized to realize the dental plaque quantitative testing device of fluorescent energy ratio |
| CN106124459A (en) * | 2016-05-30 | 2016-11-16 | 杭州电子科技大学 | The dental plaque quantitative testing device of fluorescence spectrum energy ratio |
| CN107550466A (en) * | 2017-10-20 | 2018-01-09 | 东北师范大学 | A kind of imaging method and system of odontopathy detection |
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