CN104000557A - dental calculus diagnosis method - Google Patents
dental calculus diagnosis method Download PDFInfo
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- CN104000557A CN104000557A CN201310184659.2A CN201310184659A CN104000557A CN 104000557 A CN104000557 A CN 104000557A CN 201310184659 A CN201310184659 A CN 201310184659A CN 104000557 A CN104000557 A CN 104000557A
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- dental calculus
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- 208000006558 Dental Calculus Diseases 0.000 title claims abstract description 74
- 206010044029 Tooth deposit Diseases 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title abstract description 11
- 238000003745 diagnosis Methods 0.000 title abstract description 9
- 238000001914 filtration Methods 0.000 claims description 17
- 238000002405 diagnostic procedure Methods 0.000 claims description 11
- 238000003384 imaging method Methods 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 6
- 235000013372 meat Nutrition 0.000 claims description 6
- 238000003325 tomography Methods 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 2
- 238000012014 optical coherence tomography Methods 0.000 abstract description 3
- 239000003086 colorant Substances 0.000 abstract 2
- 230000003287 optical effect Effects 0.000 abstract 2
- 208000028169 periodontal disease Diseases 0.000 description 11
- 201000010099 disease Diseases 0.000 description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 5
- 210000004195 gingiva Anatomy 0.000 description 5
- 210000000214 mouth Anatomy 0.000 description 3
- 208000024891 symptom Diseases 0.000 description 3
- 208000002064 Dental Plaque Diseases 0.000 description 2
- 208000007502 anemia Diseases 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000003239 periodontal effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 206010020880 Hypertrophy Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 208000025157 Oral disease Diseases 0.000 description 1
- 206010035664 Pneumonia Diseases 0.000 description 1
- 208000006399 Premature Obstetric Labor Diseases 0.000 description 1
- 206010036600 Premature labour Diseases 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000013399 early diagnosis Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 208000030194 mouth disease Diseases 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 208000026440 premature labor Diseases 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Abstract
The invention discloses a dental calculus diagnosis method, which utilizes Optical Coherence Tomography (OCT) to image teeth, defines image areas on the surfaces of the teeth, the top of dental calculus and the bottom of dental calculus, calculates the optical refractive indexes of the three image areas together, marks colors in the dental calculus image area, and combines the image with the calculated optical refractive index with the colors to improve the identification quality of the dental calculus image.
Description
Technical field
The present invention relates to one and utilize optics people having the same aspiration and interest Tomography to carry out dental imaging, and calculate again the light refractive index of tooth and dental calculus, to promote a kind of diagnostic method of dental calculus image identification quality.
Background technology
Periodontal disease is one of chronic oral disease that infection rate is the highest now.The whole world approximately has more than 50% population to suffer from or once suffered from this disease.Record according to document and textbook, severe periodontal disease even can cause coming off of tooth.In 2003 statistics, the reason of whole world loss of tooth approximately has 5%～15% in World Health Organization (WHO) (World Health Organization, WHO), because the cause of severe periodontal disease.In addition, periodontal disease also may cause as multiple systemic diseases such as suction-type pneumonia.If anemia of pregnant woman has serious periodontal disease, can increase the probability of premature labor.Hence one can see that, and periodontal disease is the disease that can not despise in fact.Not only affect the health of patient body, cure money and the time that this disease and sequela thereof lose and be difficult to especially estimate.Therefore, if can effectively and be accurately diagnosed in periodontal disease onset, and suitable treatment in addition, can effectively solve aforementioned several problem.It is generally acknowledged, periodontal disease can be because Institute of Micro-biology causes in oral cavity.These microorganisms form dental plaque in oral cavity, if now do not removed, microorganism will be multiplied in a large number, and secrete toxin and cause surrounding tissue inflammation and other symptoms, finally become periodontal disease.The symptom relevant to dental plaque be variation quite, the generation that the most obvious symptom is dental calculus.
Dental calculus is to be deposited by microbial mineralization, and in the existence of discovery dental calculus, the chance that changes periodontal disease into is quite large.Therefore,, if can go out dental calculus by early diagnosis, diagnose out the probability of periodontal disease also can improve much.The main stream approach of tradition diagnosis dental calculus is for utilizing x mating plate angiographic diagnosis and periodontal capsule probe to detect.Reliability, sensitivity and the repeatability of these methods is all omited and is disliked not enough.As x mating plate, easily produce undetected or mistaken diagnosis because of dental calculus self character, and its radioactivity is not suitable for anemia of pregnant woman or child to implement.As periodontal capsule probe detects, be a disruptive method what is more, must cut affected part could examinations, and though dental calculus have or not the very big sense of discomfort that all can cause patient.If the objective degree of testing person or lack experience, may allow patient suffer in vain cutter.Other are as methods such as fluorography (fluorescence), taking image inside oral cavity machines, it not the developing agent that need to be difficult to cleaning, be exactly that itself does not still belong to ripe technology, the more important thing is, all quite poors of the sensitivity of these methods and resolution, cannot diagnose out early stage dental calculus.
In order to solve the above problems, the present invention utilizes optics people having the same aspiration and interest Tomography (Optical Coherence Tomography, OCT) to detect.OCT does not have radioactivity, has high spatial resolution (μ m grade), can realtime imaging, also can be reassembled as 3 D stereoscopic image.If but at present the image of OCT only has black and white determinand to have (as: dental calculus and food debris) when similar by producing similar characteristic image, will badly influence thus identification.Promoting this identification capability needs training to a certain degree, will cause suitable door burden for the user of OCT.Therefore, how successfully to suppress the spatial noise of OCT image, improve the identification quality of determinand characteristic image, be in clinical diagnostic applications at present urgently in the problem breaking through.
Summary of the invention
Main purpose of the present invention is to provide one not have a radioactivity, non-destructive, Noninvasive and repeatable high dental calculus diagnostic method.
Secondary objective of the present invention is to provide a kind of impact that is not subject to subjective consciousness judgement, and the dental calculus diagnostic method that has significantly lowered mistaken diagnosis or failed to pinpoint a disease in diagnosis.
For achieving the above object, the present invention by the following technical solutions:
A kind of dental calculus diagnostic method, comprising:
(1) utilize optics people having the same aspiration and interest Tomography (OCT) to carry out dental imaging;
(2) imagery zone of definition dental surface;
(3) the definition top of dental calculus and the imagery zone of bottom;
(4) light refractive index of the imagery zone that calculating defines;
(5) by the upper color of imagery zone mark of dental calculus;
(6) finally the color of dental calculus isolation area and the dental calculus image that calculates light refractive index are carried out to combination.
Each object has unique light refractive index (refractive index), therefore calculates the light refractive index of determinand, significantly the identification quality of lifting feature image.
For technical characterictic of the present invention with implement example, by coordinating icon to describe in detail, allow persond having ordinary knowledge in the technical field of the present invention in following embodiment, can understand its content, and can implement according to this.
Brief description of the drawings
[brief description of drawingsfig]
Fig. 1 is image process chart of the present invention.
Fig. 2 is diagnosis algorithm flow chart of the present invention.
Fig. 3 is the image schematic diagram of light refractive index of the present invention.
Fig. 4 A is the teeth images figure with dental calculus of the embodiment of the present invention.
Fig. 4 B is that the pig gingiva meat of the embodiment of the present invention covers the striograph above tooth.
Fig. 4 C is the dental imaging figure that Fig. 4 B is carried out to OCT.
Fig. 4 D is the striograph in definition dental surface region.
Fig. 4 E is the striograph on definition dental calculus top.
Fig. 4 F is the striograph of definition dental calculus bottom.
Fig. 4 G is the shadow table diagram in dental calculus region.
Fig. 4 H is the striograph after the present invention completes.
[primary clustering symbol description]
1 tooth 11 dental calculus 2 pig gingiva meat
Detailed description of the invention
Dental calculus diagnostic method of the present invention, its image handling process is as follows, as shown in Figure 1.
(a) first utilize OCT to carry out the image capture of tooth.
(b) again the image after acquisition is carried out to side's property extension filtering (anisotropic diffusion filtering) such as non-, to filter out noise and the speckle of image, and then know the boundary position of image.
(c) again image is carried out to medium filtering (middle value filtering), to filter out the speckle noise of image.
(d) again image is carried out to primary threshold value filtering (threshold filtering), further to find out the position on image outermost border.
(e) carry out again dental surface linear convergence, define the imagery zone of dental surface.
(f) in addition, after completing, steps flow chart (d) to carry out steps flow chart (e) before, image can be sent to another branch line simultaneously and carry out gaussian filtering (Gaussian filtering), to remove tooth meat image, purification dental calculus image.
(g) again image is carried out to secondary threshold value filtering, further to find out the boundary position of dental calculus.
(h) be confirmed whether to isolate dental calculus image, if not yet isolation, repeating step flow process (g) again, confirms the boundary position of dental calculus.
(i), after dental calculus image is isolated, further determine the boundary position of dental calculus image.
(j) carry out the convergence of dental calculus top line, define the imagery zone on dental calculus top.
(k) carry out the convergence of dental calculus bottom line, define the imagery zone of dental calculus bottom.
(l) imagery zone of the dental calculus top defining, dental surface and dental calculus bottom is carried out to the calculating of light refractive index, its formula is as follows, and refers to Fig. 3.
Z ': dental surface center is to the distance on dental calculus top
Z: dental surface center is to the distance of dental calculus bottom
(m) in addition, after image handling process (h) completes, will carry out image handling process (i) before, image is sent to another branch line simultaneously and indicates the color of dental calculus isolation area.
(n) color of dental calculus isolation area and the dental calculus image that calculates light refractive index are carried out to combination convergence, then complete whole image processing.
Processing journey stream from the image of above-mentioned this case can understand, and the dental calculus diagnostic method of this case, at least comprises the steps, as shown in Figure 2.
(1) utilize optics people having the same aspiration and interest Tomography (OCT) to carry out dental imaging.
For understanding the actual state of OCT to its dental calculus imaging, the present embodiment uses one and has the tooth 1 of dental calculus 11, and the pig gingiva meat 2 of the thickness 0.8mm that approaches mankind's gingiva meat is covered on this tooth 1, refers to Fig. 4 A and Fig. 4 B.And Fig. 4 B is carried out to the dental imaging of OCT, this imaging as shown in Figure 4 C, can observe from Fig. 4 C, on normal tooth surface, separately there is an irregularly shaped hypertrophy region (as shown by arrows), this image meets dental calculus and is deposited in the pathology of dental surface, and has also confirmed the dental calculus ability under OCT diagnosis gingiva.
(2) imagery zone of definition dental surface, as shown in Figure 4 D.
(3) the definition top of dental calculus and the imagery zone of bottom, as shown in Fig. 4 E and Fig. 4 F;
(4) light refractive index of the imagery zone that calculating defines, refers to shown in Fig. 3.
(5) by the upper color of imagery zone mark of dental calculus, as shown in the circled of Fig. 4 G.
(6) finally the color of dental calculus isolation area and the dental calculus image that calculates light refractive index are carried out to combination, as shown in Fig. 4 H.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (4)
1. a dental calculus diagnostic method, is characterized in that comprising:
(1) utilize optics people having the same aspiration and interest Tomography to carry out dental imaging;
(2) imagery zone of definition dental surface;
(3) the definition top of dental calculus and the imagery zone of bottom;
(4) light refractive index of the imagery zone that calculating defines;
(5) by the upper color of imagery zone mark of dental calculus;
(6) finally the color of dental calculus isolation area and the dental calculus image that calculates light refractive index are carried out to combination.
2. dental calculus diagnostic method according to claim 1, is characterized in that, before the imagery zone of described definition dental surface, also comprises the steps:
(a) carry out side's property extension filtering such as non-, to filter out noise and the speckle of image;
(b) carry out again medium filtering, to filter out the speckle noise of image;
(c) carry out again threshold value filtering, to find out the position on image outermost border;
(d) carry out again dental surface linear convergence, to define the imagery zone of dental surface.
3. dental calculus diagnostic method according to claim 1, is characterized in that, before the top of described definition dental calculus and the imagery zone of bottom, also comprises the steps:
(a) carry out side's property extension filtering such as non-, to filter out noise and the speckle of image;
(b) carry out again medium filtering, to filter out the speckle noise of image;
(c) carry out again threshold value filtering, to find out the position on image outermost border;
(d) carry out again gaussian filtering, to remove tooth meat image, purification dental calculus image;
(e) carry out again secondary threshold value filtering, to find out the boundary position of dental calculus;
(f) carry out the convergence of dental calculus top line, define the imagery zone on dental calculus top;
(g) carry out the convergence of dental calculus bottom line, define the imagery zone of dental calculus bottom.
4. dental calculus diagnostic method according to claim 1, is characterized in that being calculated as of described light refractive index:
Wherein this z ' is for dental surface center is to the distance on dental calculus top, z: dental surface center is to the distance of dental calculus bottom.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102105976 | 2013-02-21 | ||
| TW102105976A TWI481392B (en) | 2013-02-21 | 2013-02-21 | A dental calculus imaging methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104000557A true CN104000557A (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310184659.2A Pending CN104000557A (en) | 2013-02-21 | 2013-05-17 | dental calculus diagnosis method |
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| Country | Link |
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| CN (1) | CN104000557A (en) |
| TW (1) | TWI481392B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017088139A1 (en) * | 2015-11-26 | 2017-06-01 | 法玛科技顾问股份有限公司 | Optical tomography digital-impression imaging system and method for use thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080062429A1 (en) * | 2006-09-12 | 2008-03-13 | Rongguang Liang | Low coherence dental oct imaging |
| JP2009165831A (en) * | 2008-01-11 | 2009-07-30 | Carestream Health Inc | Intra-oral imaging apparatus for diagnostic and cosmetic imaging |
| CN101849816A (en) * | 2009-04-06 | 2010-10-06 | 住友电气工业株式会社 | Dental diagnostic system by means of optical coherence tomography |
| CN102028555A (en) * | 2010-12-31 | 2011-04-27 | 中国科学院光电技术研究所 | Fluorescent tooth detector |
| CN102512140A (en) * | 2011-11-29 | 2012-06-27 | 中国科学院自动化研究所 | Locating optical projection coherence tomography imaging rotation center method |
| US20120238881A1 (en) * | 2011-03-15 | 2012-09-20 | Chung-Cheng Chou | Oral optical diagnosing apparatus and operating method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2085929A1 (en) * | 2005-04-28 | 2009-08-05 | The General Hospital Corporation | Evaluating optical coherence tomography information for an anatomical structure |
| EP2229659A1 (en) * | 2008-01-18 | 2010-09-22 | The Procter and Gamble Company | Methods and systems for analyzing hard tissues |
-
2013
- 2013-02-21 TW TW102105976A patent/TWI481392B/en not_active IP Right Cessation
- 2013-05-17 CN CN201310184659.2A patent/CN104000557A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080062429A1 (en) * | 2006-09-12 | 2008-03-13 | Rongguang Liang | Low coherence dental oct imaging |
| CN101730498A (en) * | 2006-09-12 | 2010-06-09 | 卡尔斯特里姆保健公司 | Low coherence dental oct imaging |
| JP2009165831A (en) * | 2008-01-11 | 2009-07-30 | Carestream Health Inc | Intra-oral imaging apparatus for diagnostic and cosmetic imaging |
| CN101849816A (en) * | 2009-04-06 | 2010-10-06 | 住友电气工业株式会社 | Dental diagnostic system by means of optical coherence tomography |
| CN102028555A (en) * | 2010-12-31 | 2011-04-27 | 中国科学院光电技术研究所 | Fluorescent tooth detector |
| US20120238881A1 (en) * | 2011-03-15 | 2012-09-20 | Chung-Cheng Chou | Oral optical diagnosing apparatus and operating method thereof |
| CN102512140A (en) * | 2011-11-29 | 2012-06-27 | 中国科学院自动化研究所 | Locating optical projection coherence tomography imaging rotation center method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017088139A1 (en) * | 2015-11-26 | 2017-06-01 | 法玛科技顾问股份有限公司 | Optical tomography digital-impression imaging system and method for use thereof |
| US10426346B2 (en) | 2015-11-26 | 2019-10-01 | National Yang-Ming University | Optical tomography digital impression imaging system and method for use thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201433298A (en) | 2014-09-01 |
| TWI481392B (en) | 2015-04-21 |
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Application publication date: 20140827 |