JP2012125455A - Intraoral imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intraoral imaging apparatus, capable of reducing burdens on a subject during imaging and suppressing color variation of image data due to external light.SOLUTION: An intraoral imaging apparatus 1 includes: a mouthpiece type housing 10 to be mounted inside an oral cavity; a line sensor 20 for scanning body tissue along tooth alignment or gum; a control part 30 for integrally controlling respective parts of the intraoral imaging apparatus 1; a radio communication part 40 for transmitting image data obtained in the line sensor 20 to the outside; and a battery 50 for supplying power to the respective parts of the intraoral imaging apparatus 1.

Description

  The present invention relates to an intraoral imaging device for imaging biological tissues (dental dentition, gums, mucous membranes, etc.) in the oral cavity.

  Patent Document 1 includes an imaging unit having at least an objective lens and an imaging element, and a holding unit for holding the imaging unit in the oral cavity, and the imaging unit includes all or a dentition exposed in the oral cavity. An intraoral imaging device is disclosed that can image a part and a part of a living tissue at a time.

JP 2001-204750 A

  However, since the intraoral imaging device of the conventional configuration is configured to perform intraoral imaging with the mouth slightly opened and transfer the obtained image data to the monitor by wire, the burden on the subject during imaging There is a problem that image data variation due to external light is caused in addition to large fatigue (such as jaw fatigue).

  In view of the above-described problems found by the inventors of the present application, the present invention provides an intraoral imaging device capable of reducing the burden on the subject during photographing and suppressing color variations in image data due to external light. The purpose is to provide.

  In order to achieve the above object, an intraoral imaging apparatus according to the present invention includes a mouthpiece type housing that is mounted in the oral cavity, a line sensor that scans a living tissue along a dentition or gum, and each part of the apparatus. A configuration (first configuration) is provided that includes a control unit that performs overall control, a wireless communication unit that transmits image data obtained by the line sensor to the outside, and a battery that supplies power to each unit. Yes.

  In the intraoral imaging device having the first configuration, the line sensor may have a configuration (second configuration) having a light emitting unit and a light receiving unit.

  In the intraoral imaging apparatus having the second configuration, the light emitting unit may be configured to output at least one of visible light, ultraviolet light, and near infrared light (third configuration).

  In the intraoral imaging device having the second or third configuration, the light emitting unit is provided before and after the light receiving unit with reference to the scanning direction of the line sensor (fourth configuration). Good.

  Further, in the intraoral imaging device having any one of the first to fourth configurations, the housing has a concave portion for housing the line sensor, and the concave portion is sealed by a translucent member. It is preferable to adopt a configuration (fifth configuration) that is a waterproof structure.

  Further, in the intraoral imaging device having any one of the first to fifth configurations, the control unit is configured to start scanning the line sensor when detecting a predetermined start trigger (sixth configuration). Good.

  Moreover, the intraoral imaging device which consists of said 6th structure has a pressure sensor which detects an occlusal pressure, The said control part is the structure which detects that the said occlusal pressure is more than predetermined value as said start trigger ( A seventh configuration is preferable.

  Further, in the intraoral imaging device having the sixth configuration, the control unit may be configured to detect as a start trigger (eighth configuration) that the amount of light received by the line sensor is a predetermined value or less. .

  Further, in the intraoral imaging apparatus having the sixth configuration, the control unit detects a scan start signal input from the outside via the wireless communication unit as the start trigger (9th configuration). Good.

  Further, in the intraoral imaging device having any one of the first to ninth configurations, the control unit is configured to stop scanning of the line sensor when detecting a predetermined stop trigger (tenth configuration). Good.

  Moreover, the intraoral imaging device which consists of said 10th structure has a pressure sensor which detects an occlusal pressure, The said control part detects the said occlusal pressure being a predetermined value or less as a said stop trigger ( An eleventh configuration is preferable.

  Further, in the intraoral imaging device having the tenth configuration, the control unit may be configured to detect as the stop trigger (a twelfth configuration) that the amount of light received by the line sensor is a predetermined value or more. .

  Further, in the intraoral imaging device having the tenth configuration, the control unit detects a scan stop signal input from the outside via the wireless communication unit as the stop trigger (13th configuration). Good.

  Further, in the intraoral imaging device having any one of the first to thirteenth configurations, the line sensor is electrically connected to a rail groove laid in the housing along the dentition or gum and the rail groove. It is preferable to adopt a configuration (fourteenth configuration) having a wire, a motor for driving the wire, a movable member connected to the wire, and a sensor unit disposed on the movable member.

  According to the present invention, it is possible to provide an intraoral imaging apparatus capable of reducing the burden on the subject during photographing and suppressing color variation of image data due to external light.

The top view which shows schematic structure of the intraoral imaging device which concerns on this invention The longitudinal cross-sectional view which shows 1st Embodiment of the intraoral imaging device which concerns on this invention The longitudinal cross-sectional view which shows a mode that the intraoral imaging device 1 of 1st Embodiment was mounted | worn in the intraoral area. Partial top view showing one configuration example of the line sensor 20 The schematic diagram which shows one structural example of the sensor part 22. Flow chart showing an example of intraoral imaging operation The longitudinal cross-sectional view which shows 2nd Embodiment of the intraoral imaging device which concerns on this invention The longitudinal cross-sectional view which shows a mode that the intraoral imaging device 1 of 2nd Embodiment was mounted | worn in the intraoral area. Tree diagram showing one configuration example of intraoral imaging system

<Intraoral imaging device>
FIG. 1 is a top view showing a schematic configuration of an intraoral imaging apparatus according to the present invention. The intraoral imaging device 1 according to the present invention includes a housing 10, a line sensor 20, a control unit 30, a wireless communication unit 40, a battery 50, and a pressure sensor 60.

  The housing 10 is a mouthpiece type suitable for mounting in the oral cavity. The housing 10 may be of a type that is sandwiched between upper and lower tooth rows, or may be of a type that fits with an upper tooth row or a lower tooth row. As a material of the housing 10, polycarbonate resin or the like can be used.

  The line sensor 20 is provided on the back side (inner oral cavity) of the housing 10 and scans a living tissue (dental row, gum, mucous membrane, etc.) along the dental row or gum. The structure and operation of the line sensor 20 will be described in detail later.

  The control unit 30 is provided inside the housing 10 and comprehensively controls each unit of the intraoral imaging device 1. Specifically, the control unit 30 performs drive control of the line sensor 20, image data processing, wireless communication processing with the outside by the wireless communication unit 40, output monitoring processing of the pressure sensor 60, and the like. A microcomputer or the like can be used as the control unit 30.

  The wireless communication unit 40 is provided inside the housing 10 and wirelessly transmits image data obtained by the line sensor 20 to an external host device (such as a personal computer or a mobile phone terminal). As the wireless communication unit 40, for example, a Bluetooth (registered trademark) module IC can be used. With such a configuration having the wireless communication unit 40, it is not necessary to make a wired connection when transmitting image data to an external host device, and thus imaging of the oral cavity is performed with the mouth completely closed. As a result, it is possible to reduce the burden on the subject during photographing and to suppress the color variation of the image data due to external light.

  The battery 50 is provided inside the housing 10 and supplies power to each part of the intraoral imaging device 1. As the battery 50, in addition to a lithium primary battery (button type battery), a lithium ion secondary battery, an electric double layer capacitor, or the like can be suitably used. Thus, with the battery-driven intraoral imaging device 1, it is not necessary to connect an external power supply cable during intraoral imaging, so imaging within the oral cavity is performed with the mouth completely closed. As a result, it is possible to reduce the burden on the subject during photographing, and to suppress color variations in image data due to external light.

  If a secondary battery is used as the battery 50, battery replacement work is not necessary, and the convenience of the intraoral imaging device 1 can be improved. However, in that case, it should be noted that a charging unit that performs charging control of the battery 24 by receiving external power supply is required. As a method of supplying power to the charging unit, a contact method using a USB [Universal Serial Bus] cable or the like may be used, or a non-contact method such as an electromagnetic induction method, an electric field coupling method, or a magnetic field resonance method may be used. There may be. In order to make the intraoral imaging device 1 have a waterproof structure, it is desirable to adopt a non-contact method as a method for supplying power to the charging unit from the viewpoint of completely eliminating the external terminals.

  The pressure sensor 60 is provided inside the housing 10 (for example, a position where it is occluded by upper and lower molars), and transmits the detection result of the occlusal pressure to the control unit 30. As the pressure sensor 60, a piezoelectric type, a capacitance type, a semiconductor diaphragm type, an elastic diaphragm type, or the like can be used.

<First embodiment (upper jaw photographing type)>
FIG. 2 is a longitudinal sectional view showing a first embodiment of the intraoral imaging apparatus 1 according to the present invention, and FIG. 3 is a longitudinal section showing a state in which the intraoral imaging apparatus 1 of the first embodiment is mounted in the oral cavity. FIG.

  In the intraoral imaging device 1 of the first embodiment, the housing 10 includes a first recess 11 that opens to face the upper jaw, and a second recess 12 for housing the line sensor 20. The second concave portion 12 is covered with a rail groove support portion 14 other than the opening portion 13 facing the upper jaw, and further, a translucent member 70 such as a transparent acrylic plate is provided on the upper portion thereof, such as a silicone resin-based elastic adhesive or the like. Is attached. In other words, the second recess 12 has a waterproof structure sealed by the translucent member 70. In addition, since the opening part 13 is corresponded to the imaging | photography window of the line sensor 20, it is provided in the near side (side near a dentition and a gum) of the housing 10. FIG. The depth of the entire housing 10 is about 15 to 20 mm, and the depth of the second recess 12 is about 7 mm. Thus, since the intraoral imaging apparatus 1 of 1st Embodiment is very small, it becomes possible to suppress the discomfort (the feeling of insertion of a foreign material) in the oral cavity given to the subject as much as possible.

  Further, as described above, the control unit 30 and the wireless communication unit 40 are embedded in the housing 10. Connected to the control unit 30 is a power switch 80 for performing on / off control of the main power source. The power switch 80 has a waterproof structure embedded in the housing 10.

<Line sensor>
The structure and operation of the line sensor 20 will be described with reference to FIG. 4 together with FIGS. FIG. 4 is a partial top view showing a configuration example of the line sensor 20.

  The line sensor 20 includes a movable member 21, a sensor unit 22, a wire connection unit 23, a rail groove 24, a wire 25, and a motor 26.

  The movable member 21 is suspended from the wire 25 via the wire connection portion 23, and from one back tooth side to the other back tooth side along the dentition or gum along with the feeding / returning of the wire 25 by the motor 26. Move on a curved trajectory.

  The sensor unit 22 is disposed on the upper surface of the movable member 21, and performs light irradiation and detection of reflected light on a living tissue (dentition, gums, mucous membrane, etc.) via the opening 13 and the light transmitting member 70. Do. A specific configuration of the sensor unit 22 will be described in detail later.

  The wire connecting portion 23 is a support shaft for connecting the movable member 21 and the wire 25. Although not depicted in FIG. 4, in order to suspend the movable member 21 more stably, not only the movable member 21 and the wire 25 are connected via the wire connection portion 23 but also the rail groove 24. You may suspend the wire connection part 23 so that a slide is possible.

  The rail groove 24 is a guide member for the wire 25, and is laid on the housing 10 (the lower surface of the rail support member 14) so as to draw a curved track from one back tooth side to the other back tooth side along the dentition or gum. ing. The rail groove 24 is preferably laid so as to pass near the center point of the depth width of the second recess 12 in order to reduce the curvature change of the curved track.

  The wire 25 is looped between the motor 26 and a pulley (not shown), and is electrically connected to the two grooves carved in the rail groove 24. The movable member 21 is suspended from one point of the wire 25. In addition, by appropriately designing the groove width of the rail groove 24 and the depth width of the second recess 24, even if the wire 25 meanders somewhat, it can be moved without any problem on the curved track of the movable member 21.

  The motor 26 is provided at the start point or the end point (one back tooth side) of the curved track, and feeds / returns the wire 25 by its rotation operation. In the example of FIG. 4, when the motor 26 is rotated clockwise, the movable member 21 is moved in a direction approaching the motor 26. On the other hand, when the motor 25 is rotated counterclockwise, the movable member 21 is moved in a direction away from the motor 26.

<Sensor part>
FIG. 5 is a schematic diagram illustrating a configuration example of the sensor unit 22. The sensor unit 22 includes a white light emitting unit W, an ultraviolet light emitting unit UV, a near infrared light emitting unit NIR, and a light receiving unit PD.

  The white light emitting unit W outputs white light (wavelength: about 400 to 700 nm) to illuminate the living tissue. As the white light emitting unit W, for example, an RGB white LED that generates white light by combining a red LED [Light Emitting Diode], a green LED, and a blue LED can be used.

  The ultraviolet light emitting unit UV outputs ultraviolet light (wavelength: about 360 to 400 nm) to illuminate a living tissue.

  The near-infrared light emitter NIR outputs near-infrared light (wavelength: about 700 to 1200 nm) to illuminate a living tissue.

  The light receiving unit PD detects reflected light returning from the living tissue, converts it into an electrical signal, and outputs it. As the photoelectric conversion element of the light receiving unit PD, it is desirable to use a CIGS [Copper Indium Gallium DiSelenide] semiconductor having high sensitivity in a wide wavelength band.

  The light receiving parts PD are arranged in a plurality of columns along the longitudinal direction of the sensor part 22. The white light emitting unit W, the ultraviolet light emitting unit UV, and the near infrared light emitting unit NIR are arranged cyclically along the longitudinal direction of the sensor unit 22. Further, the white light emitting unit W, the ultraviolet light emitting unit UV, and the near infrared light emitting unit NIR are provided before and after the light receiving unit PD with the scanning direction of the line sensor 20 as a reference. By adopting such a configuration, it is possible to illuminate the living tissue in a wide range without unevenness, and to reduce variations in received light for each light receiving unit PD.

<Intraoral imaging operation>
FIG. 6 is a flowchart showing an example of the intraoral imaging operation, and the operation subject is basically the control unit 30. However, pressing of the power switch 80, attachment / detachment of the intraoral imaging device 1, and opening / closing of the mouth are performed by a human (dentist, subject, etc.).

  When the depression of the power switch 80 is detected in step S101, initial setting of the intraoral imaging device 1 (such as initialization of the line sensor 20) is performed in step S102, and then a predetermined start trigger is set in step S103. A determination is made whether or not is detected. If the determination is yes, the flow proceeds to step S104. On the other hand, if a negative determination is made, the flow returns to step S103, and the start trigger detection determination is repeated.

  In addition, as said start trigger, what is necessary is just to detect that the occlusal pressure detected with the pressure sensor 60 is more than predetermined value, or the light reception amount of the line sensor 20 is below predetermined value, for example. With such a configuration, after the power switch 80 is pressed by the dentist or the subject, the scanning of the line sensor 20 can be started when the subject wears the intraoral imaging device 1 and closes the mouth. It becomes possible.

  Moreover, as said start trigger, you may detect that the scan start signal was input from the outside via the wireless communication part 40, for example. With such a configuration, it is possible to arbitrarily determine the scan start timing of the line sensor 20.

  In step S104, white light irradiation is performed. In step S105, image data at the time of white light irradiation is acquired. That is, in step S104 and step S105, shooting in the visible region is performed. The image data acquired here is temporarily stored as image data in the visible region until the scan is completed or stopped.

  In step S106, ultraviolet light irradiation is performed, and in step S107, image data at the time of ultraviolet light irradiation is acquired. That is, in step S106 and step S107, imaging in the ultraviolet region is performed. Note that the image data acquired here is temporarily stored as image data in the ultraviolet region until the scan is completed or stopped.

  In step S108, near-infrared light irradiation is performed, and in step S109, image data at the time of near-infrared light irradiation is acquired. That is, in step S108 and step S109, imaging in the near infrared region is performed. The image data acquired here is temporarily stored as image data in the near infrared region until the scan is completed or stopped.

  In step S110, it is determined whether or not the line sensor 20 has been scanned to the last line. If the determination is yes, the flow proceeds to step S111, and the series of flows are completed after the temporarily stored image data is wirelessly transmitted to the external host device. On the other hand, if a negative determination is made, the flow proceeds to step S112, the line sensor 20 is moved by one line, and then the flow returns to step S104.

  Further, while the photographing operations in steps S104 to S110 and step S112 are repeated, a scan stop interrupt process is performed (open arrow in the figure). In this interrupt process, it is determined in step SS113 whether or not a predetermined stop trigger has been detected. If the determination is yes, the flow proceeds to step S114 and the scan is stopped, and then the flow returns to step S102. At that time, the temporarily stored image data is discarded. On the other hand, if a negative determination is made, the interrupt process is terminated and the flow returns to the step before the interrupt process.

  In addition, as said stop trigger, what is necessary is just to detect that the occlusion pressure detected by the pressure sensor 60 is below a predetermined value, or the light reception amount of the line sensor 20 is above a predetermined value, for example. By setting it as such a structure, it becomes possible to stop the scan of the line sensor 20 when a test subject opens a mouth with the intraoral imaging device 1 mounted.

  Moreover, as said stop trigger, you may detect that the scan stop signal was input from the outside via the wireless communication part 40, for example. With such a configuration, the scan stop timing of the line sensor 20 can be arbitrarily determined.

  As described above, according to the intraoral imaging apparatus 1 according to the present invention, the state in the oral cavity can be easily browsed and recorded as image data, and further can be made into a database. Therefore, dentists can evaluate the health status of subjects from a more objective or statistical viewpoint than before, and in the end, periodontal disease, bad breath, dental caries, inflammation and related heart. Early detection and early treatment of diseases and diabetes can be performed.

  In particular, with the intraoral imaging device 1 according to the present invention, image data in the visible region can be obtained without being affected by external light, so that the dentist correctly determines the oral age of the subject. Is possible. The oral age represents the state of the oral cavity in an easy-to-understand manner by replacing the health state of teeth and gums with age. Oral age is checked by checking the number of teeth that have never been treated for dental caries, the presence or absence of inflammation in tartar and gums, the depth of periodontal pockets, etc., and combining the results with the average of Japanese people. Determined. By determining the oral age, subjects will be interested in oral health even when there are no abnormalities or illnesses such as tooth pain, so be sure to improve regular oral care and dietary habits. As a result, it becomes possible to protect the health of teeth.

  Moreover, if it is the intraoral imaging device 1 which concerns on this invention, since it can acquire the image data in an ultraviolet region, without receiving the influence of external light, a dentist can perform plaque observation by non-staining. It becomes possible.

  In addition, the intraoral imaging device 1 according to the present invention can acquire image data in the near-infrared region without being affected by external light, so that a dentist can examine oral tissues and gum vessels. It is also possible to observe, and as a result, it is possible to make use for treatment of gums and oral tissues which are not conventional.

<Second embodiment (mandibular photographing type)>
FIG. 7 is a longitudinal sectional view showing a second embodiment of the intraoral imaging apparatus 1 according to the present invention, and FIG. 8 is a longitudinal section showing a state in which the intraoral imaging apparatus 1 of the second embodiment is mounted in the oral cavity. FIG.

  In the intraoral imaging apparatus 1 of the second embodiment, the housing 10 includes a first recess 11 that opens to face the lower jaw, and a second recess 12 for housing the line sensor 20. Unlike the first embodiment, the second concave portion 12 has the entire surface facing the lower jaw as the opening 13, and the entire surface thereof is sealed by the translucent member 70. That is, in the intraoral imaging device 1 of the second embodiment, the rail groove support portion 14 is not necessary, so that the opening portion 13 can be widened, and thus the area of the sensor portion 22 that occupies the movable member 21. Can be expanded.

<Intraoral imaging system>
FIG. 9 is a tree diagram showing a configuration example of an intraoral imaging system using the intraoral imaging device 1 according to the present invention. The intraoral imaging apparatus 1 transfers intraoral image data by performing short-range wireless communication (ad hoc communication) with the host device 2. The host device 2 is wired or wirelessly connected to a network 3 (LAN [Local Area Network] or the Internet), and can share image data with other remote terminals 4 connected to the network 3. By constructing such an intraoral imaging system, in the future, for example, in the future, a remote diagnosis system in which a subject can transfer intraoral image data taken at home to a remote dentist for diagnosis. It can be realized.

<Other variations>
The configuration of the present invention can be variously modified in addition to the above-described embodiment without departing from the gist of the invention. That is, the above-described embodiment is an example in all respects and should not be considered as limiting, and the technical scope of the present invention is not the description of the above-described embodiment, but the claims. It should be understood that all modifications that come within the meaning and range of equivalents of the claims are included.

  For example, in the above-described embodiment, the configuration in which image data is wirelessly transmitted to the host device when the intraoral imaging is finished has been described as an example. However, the configuration of the present invention is not limited to this. Instead, for example, it may be configured to include a memory for storing image data and a wired interface unit for transmitting the image data stored in the memory to the host device. By adopting such a configuration, the wireless communication unit 40 with high power consumption is not necessary, and the driving time of the battery 50 can be extended. However, in order to make the intraoral imaging device 1 have a waterproof structure, it is desirable to adopt a configuration in which image data is wirelessly communicated from the viewpoint of completely eliminating external terminals.

  In the above embodiment, the description has been made by taking the single-sided type (upper jaw photographing type, lower jaw measuring type) as an example. However, the configuration of the present invention is not limited to this, and the first and second embodiments are not limited thereto. By combining the embodiments, a double-sided type (upper and lower jaw simultaneous photographing type) can be used. By adopting such a configuration, it is possible to photograph the upper jaw and the lower jaw all at once, so that the total imaging time can be shortened, and the burden on the subject can be reduced.

  In the above embodiment, the description has been given by taking as an example the configuration in which the first recess 11 and the second recess 12 of the housing 10 are opened in the same direction, but the configuration of the present invention is limited to this. Instead of this, the first recess 11 and the second recess 12 of the housing 10 may be open in opposite directions.

  Further, in the above embodiment, the description has been given by taking as an example a configuration in which image data in the visible region, image data in the ultraviolet region, and image data in the near infrared region are all acquired in one scan. However, the configuration of the present invention is not limited to this, and only the image data in the necessary wavelength region may be acquired. Also, a sequence in which image data in the visible region is acquired in the first scan, image data in the ultraviolet region is acquired in the second scan, and image data in the near infrared region is acquired in the third scan. Is also possible. In that case, it is good also as a structure which starts a next scan after returning a sensor part to a predetermined | prescribed scan start position whenever a previous scan is complete | finished, or makes a previous scan end position a next scan start position. It is good also as a structure.

  The intraoral imaging device according to the present invention can be used as a tool for dental examination or oral age measurement.

DESCRIPTION OF SYMBOLS 1 Intraoral imaging device 2 Terminal 3 Network 4 Terminal 10 Housing 11 1st recessed part 12 2nd recessed part 13 Opening part 14 Rail groove support part 20 Line sensor 21 Movable member 22 Sensor part 23 Wire connection part 24 Rail groove 25 Wire 26 Motor 30 Control unit 40 Wireless communication unit 50 Battery 60 Pressure sensor 70 Translucent member 80 Power switch W White light emitting unit (visible light emitting unit)
UV UV light emitting part NIR Near infrared light emitting part PD Light receiving part

Claims (14)

A mouthpiece type housing to be installed in the oral cavity;
A line sensor that scans biological tissue along the dentition or gums;
A control unit for comprehensively controlling each part of the device;
A wireless communication unit for transmitting image data obtained by the line sensor to the outside;
A battery for supplying power to each part of the device;
An intraoral imaging apparatus characterized by comprising:   The intraoral imaging apparatus according to claim 1, wherein the line sensor includes a light emitting unit and a light receiving unit.   The intra-oral imaging apparatus according to claim 2, wherein the light emitting unit outputs at least one of visible light, ultraviolet light, and near infrared light.   The intraoral imaging device according to claim 2 or 3, wherein the light emitting unit is provided before and after the light receiving unit with reference to a scanning direction of the line sensor. The housing has a recess for accommodating the line sensor,
The intraoral imaging device according to any one of claims 1 to 4, wherein the concave portion has a waterproof structure sealed by a translucent member.   The intraoral imaging apparatus according to claim 1, wherein the control unit starts scanning the line sensor when a predetermined start trigger is detected. Having a pressure sensor to detect occlusal pressure,
The intraoral imaging apparatus according to claim 6, wherein the control unit detects that the occlusal pressure is equal to or higher than a predetermined value as the start trigger.   The intraoral imaging apparatus according to claim 6, wherein the control unit detects that the amount of light received by the line sensor is equal to or less than a predetermined value as the start trigger.   The intraoral imaging apparatus according to claim 6, wherein the control unit detects a scan start signal input from the outside via the wireless communication unit as the start trigger.   The intraoral imaging apparatus according to claim 1, wherein the control unit stops scanning of the line sensor when detecting a predetermined stop trigger. Having a pressure sensor to detect occlusal pressure,
The intra-oral imaging apparatus according to claim 10, wherein the control unit detects that the occlusal pressure is equal to or less than a predetermined value as the stop trigger.   The intra-oral imaging apparatus according to claim 10, wherein the control unit detects that the amount of light received by the line sensor is equal to or greater than a predetermined value as the stop trigger.   The intra-oral imaging apparatus according to claim 10, wherein the control unit detects a scan stop signal input from the outside via the wireless communication unit as the stop trigger. The line sensor is
A rail groove laid in the housing along the dentition or gum,
A wire conducted into the rail groove;
A motor for driving the wire;
A movable member connected to the wire;
A sensor unit disposed on the movable member;
The intraoral imaging device according to any one of claims 1 to 13, wherein