JP2011188880A - Dental intraoral x-ray equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide dental intraoral X-ray equipment with suppressed dimensions in the direction of thickness of a light receiving body holding part. <P>SOLUTION: The dental intraoral X-ray equipment 1 includes a retention base board 10 to be held by engagement of target teeth for radiography or other teeth in the radiography using an X-ray device. The dental intraoral X-ray equipment also includes the light receiving body holding part 20 disposed at an end of a portion of the retention base board 10 to be inserted into the oral cavity and having a built-in X-ray receiving part 25 with an X-ray imaging element. A peripheral circuit part 29 of the X-ray imaging element is built in the retention base board 10. The X-ray receiving part 25 is connected to the peripheral circuit part 29 via a flexible base board 27. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a dental intraoral X-ray imaging apparatus, and more particularly to a dental intraoral X-ray imaging apparatus in which an X-ray imaging element is incorporated in a dental intraoral X-ray imaging auxiliary tool (indicator).

  As in Patent Document 1, a dental intraoral X-ray auxiliary tool (indicator) used in imaging of a tooth using an X-ray apparatus has been proposed. A dental intraoral X-ray assisting tool is provided with a flat retaining substrate and an X-ray light receiving portion provided at an end of a portion to be inserted into the oral cavity of the retaining substrate during imaging and including an X-ray imaging device. A light receiving body holding part and a guide part (ring) provided at a position facing the light receiving body holding part through the retaining substrate and used for positioning the X-ray irradiation port are provided.

JP 2004-174162 A

  However, since the X-ray light receiving part and the dental intraoral X-ray assisting tool have separate structures, the dimension in the thickness direction in which the X-ray light receiving part and the light receiver holding part are combined is increased.

  Accordingly, an object of the present invention is to provide a dental intraoral X-ray imaging apparatus in which the dimension of the photoreceptor holding portion in the thickness direction is suppressed.

  The intraoral X-ray imaging apparatus for dental use according to the present invention includes a retention substrate that is held when an imaging object tooth or other teeth are engaged during imaging using the X-ray device, and an intraoral area of the retention substrate during imaging. And a photoreceptor holding part that incorporates an X-ray light receiving part having an X-ray image sensor, and a peripheral circuit part of the X-ray image sensor is incorporated in the retaining substrate, The line light receiving unit and the peripheral circuit unit are connected via a flexible substrate.

  By incorporating the X-ray light receiving part in the light receiving body holding part, the X-ray light receiving part is a separate body, and the dimension in the thickness direction of the light receiving body holding part is suppressed as compared with the form of being attached to the front surface of the light receiving body holding part. It becomes possible. Further, since the light receiver holding part and the X-ray light receiving part are integrally formed, there is an advantage that it is easy to perform a design that suppresses the overall dimensions as much as possible, such as wiring. In particular, the design in which the reference scale is arranged on the front surface of the photoreceptor holding portion can be easily performed.

  In addition, since the wire from the X-ray light receiving unit is wired through the flexible substrate, the dimension in the thickness direction can be reduced compared to the form in which the wire from the X-ray light receiving unit is routed from the back side. In addition, the wire can be hidden inside the X-ray holding part or the holding substrate.

  In addition, a circuit (peripheral circuit unit) for driving the X-ray image sensor, amplifying the image signal output from the X-ray image sensor, and A / D conversion (peripheral circuit unit) is incorporated in the X-ray light receiving unit including the X-ray image sensor. It is built in a holding substrate separate from the photoreceptor holder. Thereby, it is possible to reduce the size of the light receiving member holding portion as compared with a mode in which the peripheral circuit portion is built in the light receiving member holding portion. Specifically, not only a space for arranging members such as an amplifier constituting the peripheral circuit section, but also an X-ray apparatus of a circuit that may cause a malfunction when X-rays are irradiated among these members. It is possible to reduce the size of the photoreceptor holding portion including the space for arranging the X-ray protective material provided on the side.

  If the dimensions in the thickness direction, the vertical direction, and the horizontal direction of the photoreceptor holding unit can be reduced, the contact portion with the subject's palate and the like is reduced, and the positional relationship between the imaging surface and the imaging target tooth is adjusted (for example, Adjustment to make both of them parallel or nearly parallel) is facilitated. Even if the imaging surface and the imaging target tooth are not in a parallel positional relationship, it is possible to obtain a tooth image close to the actual length by using a bisector imaging method. It is possible to obtain an image of a tooth close to the actual length in a state where there are few errors when the two are closer to a parallel state.

  In particular, if the dimension of the photoreceptor holding part in the thickness direction can be reduced, X-ray imaging can be performed under imaging conditions similar to those when imaging using X-ray film. A user who is accustomed to X-ray imaging can perform X-ray imaging using an X-ray imaging device such as a CCD in a state of less discomfort.

  In addition, since a member that may generate heat during use of the amplifier of the peripheral circuit unit is disposed at a location away from the X-ray image sensor, the influence of heat from the member of the peripheral circuit unit to the X-ray image sensor is reduced. It becomes possible. However, from the viewpoint of noise removal, it is desirable to shorten the electrical path of the X-ray imaging device and the driver, amplifier, A / D converter, etc., so that the peripheral circuit portion is located close to the X-ray light receiving portion on the retaining substrate. It is desirable to be arranged in

  Preferably, a waterproof cover is further provided, and at the time of photographing, a part inserted into the oral cavity of the subject including a part of the retaining substrate and the photoreceptor holding portion is covered with the waterproof cover and is placed in the oral cavity of the subject. Inserted.

  In addition to preventing the subject's saliva from entering the connecting part (particularly a flexible substrate) between the photoreceptor holder and the retaining substrate, it is waterproof even without cleaning the retaining substrate and the photoreceptor holder. There is an advantage that it can be used for other subjects simply by changing the cover.

  Preferably, the X-ray imaging device is mounted on a flexible substrate, and the circuit of the peripheral circuit unit is mounted on the flexible substrate.

  The X-ray image pickup device of the X-ray light receiving unit may be mounted on a normal plate-like substrate such as an alumina substrate, but the one mounted on a sheet-like substrate such as a flexible substrate holds the photoreceptor. There is an advantage of suppressing the dimension in the thickness direction of the part. When the X-ray image sensor of the X-ray light receiving unit is mounted on the flexible board, there is an advantage that a connector between a normal plate-like board and the flexible board can be omitted. In the case where the peripheral circuit unit is also mounted on the flexible substrate, it is possible to mount the X-ray imaging device and the peripheral circuit unit on one flexible substrate.

  Preferably, the peripheral circuit unit amplifies the image signal obtained by the X-ray image sensor, and the driving of the X-ray image sensor, A / D conversion of the image signal, and image processing of the image signal are performed for dental use. The image processing apparatus of the X-ray imaging element, which is a separate body from the intraoral X-ray imaging apparatus, or a peripheral circuit unit performs this.

  Preferably, the retaining substrate includes a solar cell that supplies power to the X-ray light receiving unit and the peripheral circuit unit, and a communication unit that receives a control signal and transmits an image signal obtained by the X-ray image sensor. And the light-receiving part of a solar cell is arrange | positioned in the area | region which is not inserted in a test subject's oral cavity at the time of imaging | photography.

  Since the light receiving panel of the solar cell can be arranged on the retaining substrate in a region that is not inserted into the oral cavity of the subject, and the X-ray photography is often performed in a state where the room illumination light is lit, the illumination It is possible to supply power to the X-ray light receiving unit and the peripheral circuit unit based on power generation using light. In particular, in X-ray imaging, it is only necessary to drive the X-ray image sensor or perform A / D conversion of the image signal only before and after imaging, so as in live view display, photometry, and distance measurement operation of a digital camera, There is little need to consume power other than during imaging, and an X-ray imaging device or the like can be driven without storing the power generated by the illumination light in a secondary battery or the like.

  When a power generator such as a solar cell is used, power can be supplied to an X-ray image sensor, etc. without using an AC power supply, so power is supplied to the X-ray image sensor, etc. after conversion to DC using an AC power source. It is also possible to suppress noise superposition compared to the form.

  In this case, transmission of an image signal from the peripheral circuit unit to the image processing device of the X-ray image sensor, and transmission of a control signal from the image processing device of the X-ray image sensor to the peripheral circuit unit (or X-ray light receiving unit) When wirelessly performed via Bluetooth or the like without using a cable, signals can be transmitted and received between the dental intraoral X-ray imaging apparatus and the image processing apparatus of the X-ray imaging element without using a cable.

  Preferably, the upper surface of the photoreceptor holding portion and the upper portion of the front surface are made of rubber.

  Thereby, it becomes possible to relieve a subject's pain by contacting with a palate compared with the case where this part is made of a hard material. In the case where the light receiver holding unit 20 and the X-ray light receiving unit 25 are separate bodies, it is necessary to examine the material on the upper part of both, but in this embodiment, the light receiver holding unit 20 is the X-ray light receiving unit. Therefore, if only the material of the upper part of the photoreceptor holding unit 20 is taken into account, the pain of the subject due to contact with the palate can be relieved.

  Preferably, the apparatus further includes a reference scale having a line segment of a certain length and made of a material that does not allow X-rays to pass. The reference scale is built in the photoreceptor holder, and the X-ray receiver and X It is arranged between the line devices.

  Since the reference scale is also imaged together with the imaging target tooth and included in the X-ray image, the actual length of the imaging target tooth or the like can be known while comparing with the reference scale image included in the X-ray image.

  Preferably, the retaining substrate has a hole at a position facing the imaging target tooth at the time of occlusion, and the retaining substrate is retained by the engagement of another tooth.

  In the state where the reamer is attached, the retaining substrate cannot be occluded with the imaging target tooth. Therefore, in order to avoid the reamer, a hole is provided at a position facing the imaging target tooth at the time of occlusion, and it is engaged with another tooth. To.

  As described above, according to the present invention, it is possible to provide a dental intraoral X-ray imaging apparatus in which the dimension of the photoreceptor holding portion in the thickness direction is suppressed.

It is a perspective view of the dental intraoral X-ray imaging apparatus in this embodiment. It is a side view of a dental intraoral X-ray imaging apparatus and an X-ray apparatus. It is a perspective view of a dental intraoral X-ray imaging apparatus when there is no notch in a retaining substrate. It is a perspective view of a dental intraoral X-ray imaging apparatus when a hole is provided in a retaining substrate. 1 is a side view of a dental intraoral X-ray imaging apparatus and an X-ray apparatus with a waterproof cover covered.

  Hereinafter, the configuration of the dental intraoral X-ray imaging apparatus according to the present embodiment will be described with reference to the drawings. The dental intraoral X-ray imaging apparatus 1 according to this embodiment includes a retaining substrate 10, a photoreceptor holding unit 20, an X-ray receiving unit 25, a reference scale 26, a flexible substrate 27, a peripheral circuit unit 29, and a guide ring (guide). Part) 30 (see FIGS. 1 and 2).

  The retaining substrate 10, the photoreceptor holding unit 20, and the guide ring 30 constitute a dental intraoral X-ray imaging auxiliary tool (indicator), and the photoreceptor holding unit 20 is an X-ray receiving unit 25 such as an X-ray imaging device or a reference. The scale 26 is built in, the retaining substrate 10 has a built-in peripheral circuit unit 29 of the X-ray image sensor, and the X-ray light receiving unit 25 and the peripheral circuit unit 29 are connected via a flexible substrate 27.

  Next, the detail of each part is demonstrated. The retaining substrate 10 is formed in a flat plate shape and includes a peripheral circuit portion 29 described later. In the present embodiment, a description will be given of a form in which the retaining substrate 10 has a substantially U shape when viewed from above for photographing the back teeth, but a linear shape without notches is used for photographing the front teeth. It may have a form (see FIG. 3).

  The photoreceptor holding unit 20 is a plate-like member that incorporates an X-ray receiving unit 25 having an X-ray imaging element and a reference scale 26, and is provided at the end of the portion of the retaining substrate 10 that is inserted into the oral cavity. It is fixed to the substrate 10 or held in a rotatable state in order to adjust the incident angle of X-rays from the X-ray apparatus 50.

  It is desirable that the portion in contact with the palate in the oral cavity, that is, the upper surface of the photoreceptor holding unit 20 and the upper portion of the front surface are made of a relatively soft material such as rubber. Thereby, it becomes possible to relieve a subject's pain by contacting with a palate compared with the case where this part is made of a hard material. In the case where the light receiver holding unit 20 and the X-ray light receiving unit 25 are separate bodies, it is necessary to examine the material on the upper part of both, but in this embodiment, the light receiver holding unit 20 is the X-ray light receiving unit. Therefore, if only the material of the upper part of the photoreceptor holding unit 20 is taken into account, the pain of the subject due to contact with the palate can be relieved.

  The X-ray light receiving unit 25 includes an X-ray imaging device such as a scintillator that converts X-rays into visible light and a CCD that converts the visible light into electric charges. The reference scale 26 is composed of a line segment having a certain length and a scale having a constant interval such as a 1 mm unit on the line segment and made of a material that does not transmit X-rays. It is arranged between.

  The peripheral circuit unit 29 of the X-ray light receiving unit 25 includes a driver that drives the X-ray image sensor of the X-ray light receiving unit 25, an amplifier that amplifies the image signal output from the X-ray image sensor, and an analog image signal as a digital signal. It has an A / D converter for conversion and the like, and is built in the X-ray light receiving unit 25 of the retaining substrate 10. From the viewpoint of noise removal, it is desirable to shorten the electrical path between the X-ray imaging device and the driver, amplifier, A / D converter, etc., so the peripheral circuit unit 29 is connected to the X-ray light receiving unit 25 on the retaining substrate 10. It is desirable to arrange them at close positions.

  In addition, since the peripheral circuit unit 29 includes a circuit that may cause a malfunction when irradiated with X-rays, a portion of the upper surface of the retaining substrate 10 that includes the peripheral circuit unit 29 is X-ray protective material is preferably provided.

  The X-ray light receiving unit 25 and the peripheral circuit unit 29 are connected via a flexible substrate 27. The flexible substrate 27 is provided inside the connection portion between the retaining substrate 10 and the photoreceptor holding unit 20.

  In the present embodiment, a peripheral circuit unit includes a driver that drives an X-ray image sensor, an amplifier that amplifies an image signal output from the X-ray image sensor, and an A / D converter that performs A / D conversion of the image signal. 29 is described, the image processing circuit may further include an image processing circuit that performs part or all of the image processing. In this case, an image processing apparatus of an X-ray image sensor described later is not necessary, and image data that can be displayed on a personal computer monitor (not shown) is output from the image processing circuit to the personal computer.

  The X-ray image sensor of the X-ray light receiving unit 25 may be mounted on a normal plate-like substrate such as an alumina substrate. However, the X-ray image pickup device 25 is preferably mounted on a sheet-like substrate such as the flexible substrate 27. There is an advantage of suppressing the dimension of the body holding part 20 in the thickness direction. When the X-ray image sensor of the X-ray light receiving unit 25 is mounted on the flexible substrate 27, there is an advantage that a connector between a normal plate substrate and the flexible substrate 27 can be omitted. Further, in the case where a connector is provided in the X-ray imaging device, the connector may be connected to the flexible substrate 27.

  Further, when the peripheral circuit unit 29 is also mounted on the flexible substrate 27, it is possible to mount the X-ray imaging element and the peripheral circuit unit 29 on one flexible substrate 27.

  The peripheral circuit unit 29 is connected to an image processing device (not shown) of an X-ray imaging device via a cable C1 provided inside the retaining substrate 10. Power supply from the image processing apparatus to the X-ray light receiving unit 25 and the peripheral circuit unit 29 via the cable C1, transmission of control signals from the image processing apparatus to the peripheral circuit unit 29 (or the X-ray light receiving unit 25), and the periphery An image signal is transmitted from the circuit unit 29 (or the X-ray light receiving unit 25) to the image processing apparatus. In the image processing apparatus, the image signal obtained by the X-ray image sensor is subjected to image processing and converted into image data that can be displayed on a monitor (not shown) of a personal computer.

  At the time of imaging using the X-ray apparatus 50, a part of the retaining substrate 10 and the photoreceptor holding unit 20 in which the X-ray receiving unit 25 is incorporated are inserted into the oral cavity of the subject, and the tooth axis of the imaging target tooth In a state where the retaining substrate 10 is vertical, the retaining substrate 10 is retained by occlusion of the subject's imaging target teeth or other teeth. The occlusion of the retaining substrate 10 by the imaging target tooth or the like may be performed in a state where the imaging target tooth or the like is in direct contact with the retaining substrate 10 as shown in FIG. 1 or FIG. The form (not shown) performed in the state which pinched | interposed the member for these etc. may be sufficient.

  In addition, in the state which attached the reamer, since the retention board | substrate 10 cannot be occluded with a to-be-photographed tooth, the hole part 11 is provided in the position facing a to-be-photographed tooth at the time of occlusion so that a reamer may be avoided, and other teeth It is also conceivable to make the bite with (see FIG. 4). In this case, it is necessary to configure the peripheral circuit portion 29 built in the retaining substrate 10 so as to avoid the hole portion 11.

  The guide ring 30 is provided at a position facing the photoreceptor holding unit 20 via the retaining substrate 10 and is used for positioning the X-ray irradiation port 50a. The guide ring 30 has a vertically long substantially oval shape (or a perfect circle shape) when viewed from the photoreceptor holding unit 20 side.

  The image signal output from the X-ray light receiving unit 25 is amplified and A / D converted by the peripheral circuit unit 29, and then transmitted to the image processing device of the X-ray imaging device via the cable C1. Then, image processing is performed to obtain image data that can be displayed on a monitor of a personal computer connected to the image processing apparatus.

  In the present embodiment, the photoreceptor holding unit 20 incorporates an X-ray light receiving unit 25. Thereby, it is possible to suppress the dimension in the thickness direction of the light receiving member holding part 20 as compared with a mode in which the X-ray light receiving part 25 is a separate body and is attached to the front surface of the light receiving member holding part 20. Further, since the light receiver holding unit 20 and the X-ray light receiving unit 25 are integrally formed, there is an advantage that it is easy to perform a design that suppresses the overall dimensions as much as possible, such as wiring. In particular, it is possible to easily design the reference scale 26 on the front surface of the photoreceptor holding unit 20.

  Moreover, since the wire from the X-ray light receiving unit 25 is wired via the flexible substrate, the dimension in the thickness direction can be suppressed as compared with the form in which the wire from the X-ray light receiving unit 25 is drawn from the back surface. In addition, the wire can be hidden inside the X-ray holding unit 20 and the holding substrate 10.

  In addition, a circuit (peripheral circuit unit 29) for driving the X-ray image sensor, amplifying the image signal output from the X-ray image sensor, and A / D conversion (peripheral circuit unit 29) is used as the X-ray light receiving unit 25 including the X-ray image sensor. It is built in the holding substrate 10 that is separate from the built-in photoconductor holding unit 20. This makes it possible to reduce the size of the photoreceptor holding unit 20 as compared with the configuration in which the peripheral circuit unit 29 is built in the photoreceptor holding unit 20. Specifically, not only a space for arranging members such as an amplifier constituting the peripheral circuit unit 29, but also an X-ray device 50 of a circuit that may cause a malfunction when X-rays are irradiated among these members. It is possible to reduce the size of the photoreceptor holder 20 including the space for arranging the X-ray protective material provided on the opposite side.

  If the thickness direction, the vertical direction, and the horizontal dimension of the photoreceptor holding unit 20 can be reduced, the contact portion with the subject's palate and the like is reduced, and the positional relationship between the imaging surface and the imaging target tooth is adjusted ( For example, it is easy to perform adjustment to make the two parallel or nearly parallel. Even if the imaging surface and the imaging target tooth are not in a parallel positional relationship, it is possible to obtain a tooth image close to the actual length by using a bisector imaging method. It is possible to obtain an image of a tooth close to the actual length in a state where there are few errors when the two are closer to a parallel state.

  In particular, if the dimension of the photoreceptor holder 20 in the thickness direction can be reduced, X-ray imaging can be performed under imaging conditions similar to those when imaging using an X-ray film. In addition, a user who is accustomed to X-ray imaging can perform X-ray imaging using an X-ray imaging device such as a CCD with less discomfort.

  Further, since a member that may generate heat during use, such as an amplifier of the peripheral circuit unit 29, is disposed at a location away from the X-ray image sensor, the influence of heat from the member of the peripheral circuit unit 29 to the X-ray image sensor is reduced. It is also possible to do.

  Further, since the reference scale 26 is also imaged together with the imaging target tooth and is included in the X-ray image, it is possible to know the actual length of the imaging target tooth etc. while comparing with the image of the reference scale 26 included in the X-ray image. Become.

  During imaging using the X-ray device 50, a portion inserted into the subject's mouth (a part of the retaining substrate 10 and the photoreceptor holding unit 20 in which the X-ray receiving unit 25 is incorporated) is a waterproof cover. It is desirable to be inserted into the oral cavity of the subject while being covered with 40 (see FIG. 5). In this case, it is possible to prevent the subject's saliva and the like from entering the connecting portion (particularly the flexible substrate 27) between the light receiving member holding portion 20 and the retaining substrate 10, and the retaining substrate 10, the light receiving member holding portion 20, and the like. Even if it does not perform washing | cleaning of this, there exists a merit which can be used for another test subject only by replacing | exchanging the waterproof cover 40. FIG.

  In addition, since the electrical connection between the X-ray light receiving unit 25 and the image processing device of the X-ray imaging element is performed via the cable C1 provided inside the retaining substrate 10, the cable contacts the oral cavity of the subject. It is possible to reduce the opportunity to do.

  The power supply to the X-ray light receiving unit 25 has been described as being performed from the image processing apparatus of the X-ray image sensor via the cable C1, but power supply by another power source may be used. For example, a form in which power is supplied by a power generation device such as a battery or a solar battery provided on the retaining substrate 10 can be considered. In the retaining substrate 10, it is possible to place a light-receiving panel of a solar cell in a region that is not inserted into the oral cavity of the subject, and X-ray photography is often performed in a state where room illumination light is lit. It is possible to supply power to the X-ray light receiving unit 25 and the peripheral circuit unit 27 based on power generation using illumination light. In particular, in X-ray imaging, it is only necessary to drive the X-ray image sensor or perform A / D conversion of the image signal only before and after imaging, so as in live view display, photometry, and distance measurement operation of a digital camera, There is little need to consume power other than during imaging, and an X-ray imaging device or the like can be driven without storing the power generated by the illumination light in a secondary battery or the like.

  When a power generator such as a solar cell is used, power can be supplied to an X-ray image sensor, etc. without using an AC power supply, so power is supplied to the X-ray image sensor, etc. after conversion to DC using an AC power source. It is also possible to suppress noise superposition compared to the form.

  In this case, the image signal is transmitted from the peripheral circuit unit 29 to the image processing device of the X-ray image sensor, and the control signal is transmitted from the image processing device of the X-ray image sensor to the peripheral circuit unit 29 (or the X-ray light receiving unit 25). Is transmitted wirelessly, such as Bluetooth, without using the cable C1, the signal transmission / reception between the dental intraoral X-ray imaging apparatus 1 and the image processing apparatus of the X-ray image sensor can be performed. become.

  In this embodiment, the peripheral circuit unit 29 includes an X-ray image sensor driver, an amplifier that amplifies an image signal output from the X-ray image sensor, and an A / D converter that performs A / D conversion of the image signal. The form which has was demonstrated. From the viewpoint of noise removal, it is desirable to shorten the electrical path of the X-ray imaging device and the driver, amplifier, A / D converter, etc. as in this embodiment. The X-ray imaging device may be arranged separately from the intraoral X-ray imaging device 1 and disposed on the image processing device (not shown) side of the X-ray imaging device connected via the cable C1. In this case, the image signal is output to the A / D converter of a separate image processing apparatus with the output impedance lowered by being amplified by the amplifier of the peripheral circuit unit 29.

  In addition, the peripheral circuit unit 29 may include a circuit that performs processing for removing high-frequency components of the image signal in order to remove noise before amplification by an amplifier.

  Further, the image processing apparatus of the X-ray imaging element may be separate from the personal computer, but may be in a form in which image processing is performed on the software of the personal computer.

DESCRIPTION OF SYMBOLS 1 Dental intraoral X-ray imaging apparatus 10 Retaining board 11 Hole part 20 Photoreceptor holding part 25 X-ray light-receiving part 27 Flexible board 29 Peripheral circuit part 30 Guide ring 40 Waterproof cover 50 X-ray apparatus

Claims (8)

A retaining substrate that is held by the occlusion of an imaging target tooth or other teeth at the time of imaging using an X-ray device;
A light-receiving member holding part that is provided at an end of a portion to be inserted into the oral cavity of the retaining substrate at the time of imaging, and that contains an X-ray light receiving part having an X-ray imaging element;
The peripheral circuit part of the X-ray image sensor is built in the retaining substrate,
The dental intraoral X-ray imaging apparatus, wherein the X-ray light receiving unit and the peripheral circuit unit are connected via a flexible substrate. Further provided with a waterproof cover,
At the time of imaging, a part to be inserted into the oral cavity of the subject including a part of the retaining substrate and the photoreceptor holding portion is inserted into the oral cavity of the subject in a state covered with the waterproof cover. A dental intraoral X-ray imaging apparatus.   The dental intraoral X-ray according to claim 1, wherein the X-ray imaging device is mounted on the flexible substrate, and a circuit of the peripheral circuit unit is mounted on the flexible substrate. Shooting device. The peripheral circuit unit amplifies the image signal obtained by the X-ray image sensor,
The driving of the X-ray imaging device, the A / D conversion of the image signal, and the image processing of the image signal may be an image processing device of an X-ray imaging device that is separate from the dental intraoral X-ray imaging device, The dental intraoral X-ray imaging apparatus according to claim 1, wherein the peripheral circuit unit performs the operation. The retaining substrate includes a solar cell that supplies power to the X-ray light receiving unit and the peripheral circuit unit, and a communication unit that receives a control signal and transmits an image signal obtained by the X-ray imaging device. ,
2. The dental intraoral X-ray imaging apparatus according to claim 1, wherein the light receiving unit of the solar cell is disposed in a region that is not inserted into the oral cavity of the subject during the imaging.   The dental intraoral X-ray imaging apparatus according to claim 1, wherein an upper surface of the light receiving member holding portion and an upper portion of the front surface are made of rubber. A reference scale composed of a material having a certain length of line segment and impermeable to X-rays;
The dental intraoral X-ray imaging according to claim 1, wherein the reference scale is built in the photoreceptor holding unit and is disposed between the X-ray receiving unit and the X-ray apparatus. apparatus. The retaining substrate has a hole at a position facing the imaging target tooth at the time of occlusion,
The dental intraoral X-ray imaging apparatus according to claim 1, wherein the retaining substrate is held when the other teeth are engaged with each other.

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