JP2005118420A - Identification device of restoration tooth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To distinguish a natural tooth and a restoration tooth to recognize correctly. <P>SOLUTION: An identification device of the restoration tooth is equipped with a mouthpiece 1 for covering the mouth of a subject, a light emitting part 21 for irradiating a tooth with an excitation light, and a light receiving part 22 for receiving a fluorescence light emitted from the tooth when the tooth is irradiated with the excitation light in the oral cavity covered by mouthpiece 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a restoration tooth identifying device that distinguishes and recognizes natural teeth that are a part of a living body and restoration teeth restored using a restoration material such as resin or porcelain.

In recent years, in the field of aesthetic dentistry, restoration materials such as resins and porcelain that have a texture similar to that of natural teeth have been widely used. Aesthetics are improved.
JP-A-8-89478 (FIG. 1 etc.) JP 2002-369833 A

  Japanese Patent Application Laid-Open No. 2004-151561 describes a device that shines light on teeth, gums, jawbone, tongue, cheeks, etc., captures an image of a tooth through which light has passed, and observes oral tissue from the image.

  Negative effects due to improved aesthetics of restoration teeth have also been pointed out. Since it is difficult to distinguish between a natural tooth and a restoration tooth, the restoration tooth is mistakenly diagnosed as a natural tooth by dental examination or the like. The restoration tooth is a restoration tooth to the last, and it is necessary to be careful because a correct examination is not performed unless it is recognized separately from the natural tooth that is a part of the living body.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a restoration tooth identification device that can distinguish and correctly recognize natural teeth and restoration teeth.

As means for solving the above-described problems, a restoration tooth identification device having the following configuration is employed.
That is, the restoration tooth identification device of the present invention includes a mouth covering member that covers the mouth of a subject, a light emitting unit that irradiates the teeth with excitation light, and fluorescence emitted from the teeth when the excitation light is irradiated on the teeth. A light receiving unit that receives light in the mouth covered with the mouth covering member, an imaging processing unit that visualizes fluorescence received by the light receiving unit, and an image processed by the imaging processing unit A display unit.

  When excitation light having a predetermined length of wavelength is irradiated, the natural tooth and the restoration material emit fluorescence having different fluorescence spectra. For example, comparing a resin used as a restoration material with a natural tooth, it is known that the emission intensity of the fluorescence emitted by the resin is significantly lower than that of a natural tooth when irradiated with excitation light having a wavelength of 400 nm (nanometers). ing. Also, comparing porcelain, which is also used as a restoration material, with natural teeth, when irradiated with excitation light having a wavelength of 400 nm (nanometers), the intensity of fluorescence emitted by porcelain is much higher than that of natural teeth. Are known. Therefore, if the teeth are irradiated with excitation light, and only the fluorescence in the predetermined wavelength region is received and imaged, the contrast between the natural tooth portion and the restoration teeth will occur, and the teeth irradiated with the excitation light will be the restoration teeth. You can see if there is, and where it is being repaired.

Based on such knowledge, the present invention irradiates the teeth to be examined with excitation light having a predetermined length and is excited by the light while the entire mouth of the subject is covered with the mouth covering member. Fluorescence is received, and the received fluorescence is visualized and displayed on the display unit. Based on the displayed image, the state of the restoration tooth and the restoration are visually observed. Can be confirmed.
At this time, the mouth covering member covers the entire mouth of the subject, and light is hardly reaching from the outside to the inside of the oral cavity. Therefore, even if the intensity of fluorescence emitted from the teeth is weak, noise (from outside) Without being disturbed by the light), the light receiving portion is likely to receive light. Thereby, the accuracy at the time of discriminating whether or not the tooth to be inspected is a restoration tooth or whether or not it includes a restoration portion is increased.

  In the present invention, it is preferable that the mouth covering member does not transmit at least part of the fluorescence emitted from the teeth but transmits light having a wavelength of a predetermined length or less. Since the subject's mouth is completely covered with the mouth covering member, if the light in the wavelength band that does not affect the fluorescence reception can be confirmed from the outside through the mouth covering member, the subject of discrimination It becomes possible to specify the tooth that is.

  In the present invention, the light emitting unit and the light receiving unit are fixed to the mouth covering member, the excitation light emitted from the issuing unit is simultaneously irradiated onto the plurality of teeth of the subject, and the fluorescence emitted from the plurality of teeth is received by the light receiving unit. It is preferable to receive light at the same time. As a result, a plurality of teeth can be observed at a time, and the inspection efficiency can be improved.

In this invention, it is preferable to move a light-receiving part along the arrangement direction of teeth. Since the upper jaw and the lower jaw are arranged in a horseshoe shape, if the light receiving portion is moved in the arrangement direction, all teeth can be equally regarded as a light receiving target.
Further, it is preferable that the mouth covering member is provided with a scale corresponding to the arrangement of teeth. With such a scale, it becomes easier to specify the teeth to be identified.

  In the present invention, it is preferable that at least a part entering the oral cavity of the mouth covering member is separable. It is not hygienic to use the mouth covering member that is in contact with the subject's mouth for a plurality of subjects. However, if the portion is replaced with a clean one each time the subject changes, no problem arises in terms of hygiene.

As another means for solving the above-described problems, a restoration tooth identification device having the following configuration is employed.
That is, the restoration tooth identification device of the present invention includes a dental covering member that covers teeth in the oral cavity of a subject, a handle provided on the dental covering member, a light emitting unit that irradiates teeth with excitation light, and the excitation A light receiving unit that receives fluorescence emitted from the teeth when light is irradiated on the inside of the tooth covering member, an imaging processing unit that visualizes the fluorescence received by the light receiving unit, and the imaging And a display unit that displays the video processed in the processing unit.

In the present invention, the operator covers the tooth to be inspected with a handle portion and irradiates the tooth to be inspected with excitation light having a predetermined length of wavelength, and is excited by the light. Fluorescence is received, and the received fluorescence is visualized and displayed on the display unit. Based on the displayed image, the state of the restoration tooth and the restoration are visually observed. Can be confirmed.
At this time, the tooth covering member covers the teeth in the oral cavity of the subject, and light hardly reaches from the outside to the inside thereof, so even if the emission intensity of the fluorescence emitted by the teeth is weak, noise is generated. It is not disturbed and is easily received by the light receiving unit. Thereby, the accuracy at the time of discriminating whether it is a natural tooth or a restoration tooth increases.

According to the present invention, the mouth covering member covers the entire mouth of the subject, and light is hardly reaching from the outside into the oral cavity. Is easily received by the light receiving unit.
According to the present invention, the tooth covering member covers the teeth in the oral cavity of the subject, and light hardly reaches from the outside to the inside thereof, so that the noise is not disturbed even if the light emission intensity is weak. The fluorescence is easily received by the light receiving unit.
This increases the accuracy in determining whether the tooth to be inspected is a restoration tooth or whether it contains a restoration part, so that natural teeth and restoration teeth can be distinguished and recognized correctly. become.

[First Embodiment]
A first embodiment of the present invention will be described with reference to FIG.
The restoration tooth identification device of the present embodiment includes a mouthpiece (oral covering member) 1 that covers the mouth of a subject, and a fluorescence imaging unit 2 that emits excitation light toward the tooth and receives fluorescence emitted from the tooth. And an identification device body 3 that processes and visualizes an electrical signal output from an imaging device (CCD described later) that receives fluorescence, and a monitor 4 that displays an image. The fluorescence imaging unit 2 and the identification device main body 3 are connected via a collective cable 7 in which a light guide 5 made of an optical fiber and a signal cable 6 are bundled, and the identification device main body 3 and the monitor 4 are connected to a signal cable 8. Connected through.

  The mouthpiece 1 includes a cylindrical insertion portion 11 that is inserted into the oral cavity so as to push the mouth angle to the left and right, and a cover portion 12 that touches the periphery of the inserted mouth and covers the mouth. ing. A space 13 communicating with the insertion portion 11 is formed inside the cover portion 12, and the fluorescence imaging unit 2 is disposed in the space 13. The insertion portion 11 can be separated from the cover portion 12 as necessary.

  The fluorescence imaging unit 2 includes a light emitting unit 21 that irradiates the teeth with excitation light, and a light receiving unit 22 that receives fluorescence emitted from the teeth when the excitation light is irradiated on the teeth in the mouth covered with the mouthpiece 1. And. The light emitting unit 21 and the light receiving unit 22 are accommodated in a small resin-made casing 23 sealed so that saliva and exhalation do not enter, and are fixed to the mouthpiece 1 so as to face the front teeth in the space 13. Yes.

  The light emitting unit 21 includes a lens 21a that diffuses excitation light guided from a light source 31 described later through the light guide 5, and a filter 21b that transmits the excitation light diffused by the lens 21a. The excitation light irradiated from the light emitting unit 21 is irradiated to all the teeth of the subject at once. The filter 21 b constitutes a part of the housing 23. The light receiving unit 22 detects the fluorescence focused by the lens 22b, the filter 22a that cuts the excitation light and transmits the fluorescence having a wavelength longer than a predetermined length, the lens 22b that focuses the fluorescence transmitted through the filter 22a, and the lens 22b. And a CCD 22c that outputs an electrical signal corresponding to the emission intensity. Similar to the light emitting unit 21, the filter 22 a constitutes a part of the housing 23. The electrical signal output from the CCD 22c is transmitted to the identification device body 3 via the signal cable 6.

  One end of the collective cable 7 connected to the housing 23 is fixed to the outer surface of the mouthpiece 1, and a rubber bush 7 a is attached to the base portion so that external light does not enter the space 13.

  The identification device body 3 includes a light source 31 that emits excitation light having a predetermined length of wavelength, and a lens 32 that focuses the excitation light emitted from the light source 31. The identification device main body 3 includes an imaging processing unit 33 that processes the electrical signal output from the CCD 22c to convert it into an image and display it on the monitor 4.

The identification device configured as described above is used as follows.
First, the insertion part 11 of the mouthpiece 1 is inserted into the oral cavity so that the mouth angle of the subject is widened to the left and right, and the cover part 12 is abutted on the upper and lower sides of the lips. Let

When the preparation for the inspection is completed as described above, the light source 31 is driven. When the light source 31 is driven, excitation light having a predetermined length of wavelength is guided to the light emitting unit 21 through the light guide 5 and irradiated toward all the teeth of the subject.
When the restoration light is irradiated with the excitation light among the teeth of the subject, the light emitted from the tooth passes through the filter 22a that transmits light in a predetermined wavelength range, and the light receiving unit 22 receives the fluorescence. The light receiving unit 22 outputs an electrical signal corresponding to the emission intensity of the fluorescence received by the CCD 22c. The electrical signal output from the CCD 22 c is transmitted to the imaging processing unit 33 via the signal cable 6. In the imaging processing unit 33, the electric signal output from the CCD 22c is processed, and all the teeth of the subject are displayed on the monitor 4 as an image. The surgeon confirms from the video displayed on the monitor 4 what kind of restoration the subject's teeth are in.

  According to the identification device configured as described above, the mouthpiece 1 covers the entire mouth of the subject, and light is hardly reached from the outside into the oral cavity. Not disturbed by (external light). Thereby, the image displayed on the monitor 4 becomes clearer, and the accuracy when determining whether the tooth is a natural tooth or a restored tooth is increased.

  In addition, by irradiating all the teeth of the subject with excitation light, a plurality of teeth can be observed in one inspection, and the inspection can be performed efficiently.

  The mouthpiece 1 can be exchanged with a cylindrical insertion portion 11 inserted into the oral cavity by pushing the mouth corner to the left and right, and the insertion portion 11 can be replaced with a clean one every time the subject changes. Can be carried out hygienically.

[Second Embodiment]
A second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the component already demonstrated in the said 1st Embodiment, and description is abbreviate | omitted.
In the restoration tooth identifying device of the present embodiment, the housing 23 that houses the light emitting unit 21 and the light receiving unit 22 is movable with respect to the mouthpiece 1. Moreover, the excitation light irradiated from the light emission part 21 is irradiated to a test subject's tooth | gear one by one or several.

  One end of the collective cable 7 connected to the housing 23 is covered with a cylindrical member 24 made of resin, like the housing 23. The cylindrical member 24 has one end connected to the housing 23 and a central portion bent into a bowl shape. The tubular member 24 is passed through a slit 12a formed in the cover portion 12 so as to form an arc along the teeth. On the upper and lower surfaces forming the slit 12a, a groove 12b is formed along the longitudinal direction of the slit 12a. On the other hand, a projection 24a fitted to the groove 12b is formed on the cylindrical member 24 passed through the slit 12a. When the cylindrical member 24 is moved in the longitudinal direction of the slit 12a, the housing 23 that houses the light emitting unit 21 and the light receiving unit 22 is guided in the direction in which teeth are arranged by the projection 24a being guided along the groove 12b. It is supposed to move. At the other end of the tubular member 24, a handle 24b is provided that is grasped by hand when the tubular member 24 is moved. A rubber shield 25 is attached to the cover portion 12 so that external light does not enter the space 13 through the slit 12a.

  On the outer surface of the cover part 12, a scale 12b corresponding to the teeth is provided along the slit 12a. In the case of an adult, the number of teeth is 12 for each of the upper jaw and the lower jaw. Therefore, twelve scales 12b are written above or below the slit 12a. When the cylindrical member 24 is arranged on a certain scale 12b, the light emitting portion 21 And the housing | casing 23 which accommodated the light-receiving part 22 faces the tooth | gear corresponding to the scale 12b.

  The identification device body 3 includes a light source 31 that emits excitation light having a predetermined length of wavelength, and a lens 32 that focuses the excitation light emitted from the light source 31. The identification device main body 3 includes an imaging processing unit 33 that processes the electrical signal output from the CCD 22c to convert it into an image and display it on the monitor 4.

The identification device configured as described above is used as follows.
First, the insertion part 11 of the mouthpiece 1 is inserted into the oral cavity so that the mouth angle of the subject is widened to the left and right, and the cover part 12 is abutted on the upper and lower sides of the lips. Let

  When the preparation for the inspection is completed as described above, the light source 31 is driven. When the light source 31 is driven, excitation light having a predetermined length of wavelength is guided to the light emitting unit 21 through the light guide 5 and irradiated toward individual teeth of the subject. Therefore, while continuing the excitation light irradiation, the cylindrical member 24 is operated along the slit 12a, and the fluorescent imaging unit 2 accommodated in the housing 23 is scanned along the teeth.

  In the process of scanning the fluorescence imaging unit 2, when the restoration tooth is irradiated with excitation light, the light emitted from the tooth passes through the filter 22a that transmits light in a predetermined wavelength range, and the light receiving unit 22 receives the fluorescence. . The light receiving unit 22 outputs an electrical signal corresponding to the emission intensity of the fluorescence received by the CCD 22c. The electrical signal output from the CCD 22 c is transmitted to the imaging processing unit 33 via the signal cable 6. In the imaging processing unit 33, the electrical signal output from the CCD 22c is processed, and the teeth irradiated with the excitation light are sequentially displayed on the monitor 4 as images. The surgeon confirms from the video displayed on the monitor 4 what kind of restoration the subject's teeth are in. At that time, if the position of the restoration tooth is difficult to understand, the scale on the cover portion 12 is referred to.

  According to the identification device configured as described above, the mouthpiece 1 covers the entire mouth of the subject, and light is hardly reached from the outside into the oral cavity. Not disturbed by (external light). Thereby, the image displayed on the monitor 4 becomes clearer, and the accuracy when determining whether the tooth is a natural tooth or a restored tooth is increased.

  In addition, by moving the fluorescence imaging unit 2 including the light receiving unit 22 along the tooth arrangement direction, all teeth can be equally regarded as light receiving targets, and all the teeth are individually observed in detail. It is possible to grasp the state of the repair unit.

  By providing the mouth covering member with a scale corresponding to the order of the teeth, it is possible to further easily identify the tooth as the discrimination target.

  Also in this embodiment, among the mouthpiece 1, the cylindrical insertion portion 11 inserted into the oral cavity can be exchanged so that the mouth angle is expanded to the left and right, and the insertion portion 11 is cleaned every time the subject changes. If it is exchanged, inspection can be carried out hygienically.

  By the way, although the material of the mouthpiece 1 is not specified in this embodiment, the mouthpiece 1 does not transmit at least a part of the fluorescence emitted from the teeth, but transmits light having a wavelength of a predetermined length or less. It is preferable to manufacture with a material. Since the mouth of the subject is completely covered with the mouthpiece 1, if light in a wavelength band that does not affect the reception of fluorescence is transmitted through the mouthpiece 1 and can be confirmed from the outside, it becomes an object of discrimination. The identification of the teeth that are present can be performed more easily.

[Third Embodiment]
A third embodiment of the present invention will be described with reference to FIGS.
The restoration tooth identification device of the present embodiment includes a shield unit 41 that covers the teeth of a subject, a fluorescence imaging unit 42 that emits excitation light toward the teeth and receives fluorescence emitted from the teeth, and imaging that receives fluorescence. A fluorescence identification device main body 43 that processes and visualizes an electrical signal output from an element (a PMT (photomultiplier tube) described later) and a monitor 44 that displays an image are provided. The shield unit 41 is attached to the tip of the fluorescence imaging unit 42 housed in a cylindrical resin casing 42a, and the fluorescence imaging unit 42 with the shield unit 41 attached to the tip is a pen-shaped operation unit. 45 is configured. The fluorescence imaging unit 42 and the identification device main body 43 are connected via an optical fiber light guide 46b, a single optical fiber 46a and a collective cable 48 in which a signal cable 47 is bundled. 44 is connected through a signal cable 49.

  The shield unit 41 includes a cylindrical slide member 50 having a cross section that is about the size of one tooth, and a cover portion 51 that is attached to the tip of the housing 42a and can be inserted into the slide member 50. ing. A shield member 52 made of a flexible material is provided at the tip of the slide member 50 so as not to damage the gums when pressed against the teeth or gums. A spring 53 that biases the slide member 50 in the direction of pushing out is provided inside the cover portion 51. The slide member 50 can be detached from the cover portion 51 and can be cleaned alone.

  Inside the cover part 51, a light-shielding part 54 that shields a light-emitting part 60 to be described later is provided as necessary. The light shielding unit 54 is fixed to a shielding plate 55 that is rotatably supported between a position that shields the light emitting unit 60 and a position that is retracted from the front of the light emitting unit 60, and a shaft 55 a that supports the shielding plate 55. The pinion 56 includes a pinion 56 and a rack 57 that is attached to the inside of the slide member 50 and meshes with the pinion 56. The light shielding plate 55 is normally in a position to shield the light emitting unit 60, and retracts from the front of the light emitting unit 60 when the slide member 50 is pushed into the cover unit 51.

  The fluorescence imaging unit 42 includes a light emitting unit 60 that irradiates the teeth with excitation light, a two-dimensional optical scanner 61 that scans the excitation light, and a slide member 50 that emits fluorescence emitted from the teeth when the excitation light is irradiated onto the teeth. And a light receiving portion 62 for receiving light inside the device. The light emitting unit 60, the two-dimensional optical scanner 61, and the light receiving unit 62 are accommodated in a resin casing 42a and are sealed so that saliva and exhalation do not enter.

  The light emitting unit 60 includes a filter 60a that transmits excitation light guided from the light source through the light guide 46a, a lens 60b that focuses the excitation light transmitted through the filter 22a, and a mirror 60c that reflects the excitation light focused by the lens 60a. And a cover glass 60d that transmits the excitation light. The cover glass 60d constitutes a part of the housing 42a.

  The two-dimensional optical scanner 61 includes a mirror 61a supported so that the angle can be changed with respect to the incident direction of the excitation light reflected by the mirror 60c, and an electromagnetic drive magnet 61b that drives the mirror 61a to change the angle. ing.

  The light receiving unit 62 includes a filter 62a that cuts excitation light and transmits only fluorescence in a predetermined wavelength range, and a lens 62b that focuses the fluorescence that has passed through the filter 62a. Similar to the light emitting unit 60, the filter 62a also constitutes a part of the housing 42a. The fluorescent light collected by the lens 62b is guided to the identification device main body 3 through the light guide 46b.

  The identification device main body 43 includes a light source 63 that emits excitation light having a predetermined length of wavelength, and a lens 64 that focuses the excitation light emitted from the light source 63. Further, the identification device main body 3 detects the fluorescence guided through the light guide 46b and outputs an electric signal corresponding to the emission intensity, processes the electric signal output from the PMT 65, converts it into an image, and displays it on the monitor 44. An imaging processing unit 66, a signal path 67a for transmitting the electrical signal output from the PMT 65 to the imaging processing unit 66, and a scanner driver 68 for controlling the angle of the mirror 61a are provided.

The identification device configured as described above is used as follows.
First, the subject opens his / her mouth and presses the tip of the slide member 50 so as to cover one of the subject's teeth. The shield member 52 pressed against the teeth and surrounding gums is deformed so as to match the shape of the teeth and gums, and shields the inside of the slide member 50 so that light from the outside does not enter. Further, the slide member 50 pressed against the teeth and gums is immersed inside the cover portion 51, and in the process, the rack 57 moves and the pinion 56 rotates, and the shielding plate 55 is retracted from the front of the light emitting portion 60. .

  In the identification device of the present embodiment, the light source 63 is driven from the beginning, and when the shielding plate 55 is opened, the excitation light guided to the light emitting unit 60 through the light guide 46a is a tooth covered with the slide member 50. Is irradiated. When the shielding plate 55 is opened, the two-dimensional optical scanner 61 drives the mirror 61a to scan the excitation light.

  In the process of scanning the excitation light, when the excitation light is irradiated to the restoration part of the tooth, the light receiving unit 62 receives the fluorescence emitted from the restoration part. The received fluorescence is guided to the PMT 65 through the light guide 46b, and the PMT 65 outputs an electrical signal corresponding to the emission intensity of the received fluorescence. The electrical signal output from the PMT 65 is transmitted to the imaging processing unit 33. In the imaging processing unit 33, the electrical signal output from the PMT 22 c is processed in synchronization with the control signal of the scanner driver 68 and displayed on the monitor 4 as an image. The surgeon confirms from the video displayed on the monitor 4 what kind of restoration the tooth to be examined is in.

  When the inspection is completed, the tip portion of the operation unit 45, that is, the shield unit 41 is immersed in the cleaning liquid 71 in the container 70 and cleaned.

  According to the identification device configured as described above, the slide member 50 covers the entire teeth to be inspected and the mouthpiece 1 is in a state in which almost no light reaches the inside of the slide member 50 from the outside. Even if the intensity is weak, it is not disturbed by noise (light from the outside). Thereby, the image displayed on the monitor 44 becomes clearer, and the accuracy when determining whether the tooth is a natural tooth or a restored tooth is increased.

  If the slide member 50 can be removed from the cover portion 51 and the slide member 50 is replaced with a clean one each time the subject changes, the inspection can be performed in a sanitary manner.

  By the way, in the present embodiment, the electrical signal output from the PMT 65 is processed and displayed as an image on the monitor 4, but the fluorescence is emitted based on the length of the wavelength of the fluorescence received by the light receiving unit 62. Providing a discriminating unit that discriminates whether or not a tooth is a restoration tooth can automatically perform the presence or absence of a restoration tooth without depending on a person's judgment.

It is a figure which shows the 1st Embodiment of this invention, Comprising: It is sectional drawing which shows the structure of each part of the identification apparatus of a restoration tooth. It is a figure which shows the 2nd Embodiment of this invention, Comprising: It is sectional drawing which shows the structure of each part of the identification apparatus of a restoration tooth. It is a figure which shows the external appearance of a mouthpiece. It is a figure which shows the 3rd Embodiment of this invention, Comprising: It is a figure which shows the outline | summary of the identification apparatus of a restoration tooth. It is sectional drawing which shows the structure of each part of the identification apparatus of a restoration tooth. It is a figure which shows the condition at the time of washing | cleaning an operation part.

Explanation of symbols

1 Mouthpiece (coating material for mouth)
2 Fluorescence imaging unit 3 Identification device body 21 Light emitting part 22 Light receiving part 22c CCD
31 Light source 33 Imaging processing unit

Claims (7)

A mouth covering member that covers the mouth of the subject;
A light emitting unit that irradiates the teeth with excitation light;
A light receiving unit that receives fluorescence emitted from the teeth when the excitation light is applied to the teeth in the oral cavity covered with the mouth covering member;
An imaging processing unit for imaging fluorescence received by the light receiving unit;
A restoration tooth identification device comprising: a display unit that displays an image processed in the imaging processing unit.   The restoration device for identifying a restoration tooth according to claim 1, wherein the mouth covering member does not transmit at least a part of the fluorescence emitted from the tooth but transmits light having a wavelength equal to or shorter than a predetermined length.   The light emitting unit and the light receiving unit are fixed to the mouth covering member, and the excitation light emitted from the issuing unit is simultaneously irradiated onto a plurality of teeth of a subject, and the fluorescence emitted from the plurality of teeth is emitted from the light receiving unit. 3. The restoration tooth identifying apparatus according to claim 1, wherein the apparatus receives light simultaneously.   The identification device of the restoration tooth as described in any one of Claim 1 to 3 in which the said light-receiving part is movable along the row direction of a tooth | gear.   5. The restoration tooth identification device according to claim 4, wherein the mouth covering member is provided with a scale corresponding to the arrangement of teeth.   The identification apparatus of the restoration tooth as described in any one of Claim 1 to 5 which can isolate | separate at least the part which enters an oral cavity among the said covering members for mouth. A dental covering member that covers teeth in the oral cavity of the subject;
A handle provided on the dental covering member;
A light emitting unit that irradiates the teeth with excitation light;
A light receiving unit that receives fluorescence emitted from the teeth when the excitation light is applied to the teeth, inside the tooth covering member;
An imaging processing unit for imaging fluorescence received by the light receiving unit;
A restoration tooth identification device comprising: a display unit that displays an image processed in the imaging processing unit.

Images