JP5896837B2 - Dental intraoral X-ray imaging system - Google Patents

Description

  The present invention relates to a dental intraoral X-ray imaging apparatus.

  As in Patent Document 1, an imaging auxiliary tool (indicator) used in imaging a tooth using an X-ray apparatus has been proposed.

JP 2012-095887 A

  However, several rotation axes are required, and the structure becomes complicated.

  Accordingly, an object of the present invention is to provide a dental intraoral X-ray imaging apparatus with a simplified mechanism relating to rotational motion.

  A dental intraoral X-ray imaging apparatus according to the present invention includes a light receiving unit having an X-ray imaging element or an X-ray film, an imaging auxiliary tool having a retaining unit and a rotation shaft, and a grip. An X-ray device including an X-ray source is used as a connection portion that can be rotated around an axis and is attached to a rotary shaft in a state in which the first angle with the retaining portion can be changed. At the time of photographing, the urging force is provided so that the light receiving surface of the X-ray image sensor of the light receiving part attached to the connection part is inserted into the oral cavity of the retaining part so as to approach the retaining part. An urging member is provided, and the grip is rotatable about the rotation axis, and is attached to the photographing auxiliary tool in a state where the second angle formed with the retaining portion can be changed.

  By changing the angle (second angle θ2) formed by the grip and the retaining part, the light receiving part is placed in the oral cavity in a positional relationship (grip holding position) convenient for the person holding the grip (subject or operator). It becomes possible to insert in an appropriate position.

  Also, by moving the grip, the position of the rotation axis in the oral cavity changes, and accordingly, the position where the light receiving part and the retaining part come into contact with a part in the oral cavity such as the palate in the oral cavity changes. The angle (first angle θ1) formed by the imaging surface and the retaining portion also changes. Information on the first angle θ1 is shown in an angle display unit provided outside the oral cavity as will be described later.

  Therefore, it is possible to freely change the direction of the normal line of the imaging surface of the light receiving unit while holding the grip. That is, when the user (operator or subject) holds the grip, the light receiving unit is held in a state where the first angle θ1 can be adjusted.

  Although the light receiving portion and the grip can be rotated with respect to the holding portion, the mechanism relating to the rotational motion can be simplified by sharing the rotation shaft. By simplifying, it becomes possible to easily hold the grip correctly even if the subject is not familiar with it without breaking it.

  Preferably, a first lock mechanism that controls a rotatable state of the grip about the rotation axis is provided.

  For example, when the grip is fixed in such a positional relationship that the light receiving part is above the retaining part and the grip is below the retaining part when viewed from the side, the light receiving part is positioned near the upper teeth. If the grip is fixed so that the light receiving part and the grip are above the retaining part, and the dental intraoral X-ray apparatus is turned upside down, the light receiving part is easily located near the lower teeth. .

  More preferably, it has a second lock mechanism for controlling the rotatable state of the light receiving unit around the rotation axis.

  The second lock mechanism can easily adjust the positional relationship between the light receiving unit and the retaining unit.

  Preferably, the grip is composed of a rod-shaped member, and the positional relationship between the grip and the retaining portion is determined only by a rotation operation around the rotation axis.

  Preferably, the retaining unit has an angle display unit that displays information about the first angle, and the angle display unit is located at a position where the information about the angle is visible outside the oral cavity when the light receiving unit is inserted into the oral cavity. An imaging aid is provided on the guide ring and a guide ring that is used to position the X-ray apparatus so that the X-ray source is arranged at a certain distance from the imaging surface of the light receiving unit. And a positioning unit including two or more positioning marks for positioning the X-ray irradiation port of the X-ray apparatus corresponding to the information relating to the angle.

  As described above, according to the present invention, it is possible to provide a dental intraoral X-ray imaging apparatus in which a mechanism relating to rotational motion is simplified.

It is a perspective view of the dental intraoral X-ray imaging apparatus in this embodiment. FIG. 2 is a perspective view of a dental intraoral X-ray imaging apparatus held by a user in a state where a grip is located below a retaining part and a light receiving part is located above the retaining part. FIG. 2 is a perspective view of a dental intraoral X-ray imaging apparatus held by a user in a state where a grip and a light receiving unit are positioned below a retaining unit. It is a side view which shows the structure of an imaging | photography part, a photography auxiliary tool, and an X-ray apparatus. It is a top view which shows the structure of an imaging | photography part, an imaging assistance tool, and an X-ray apparatus. It is a perspective view of a dental intraoral X-ray imaging apparatus when a guide ring has a substantially U shape. It is a perspective view of a dental intraoral X-ray imaging apparatus when a grip is also provided for the second lock mechanism (operation button) for releasing the locked state of the rotational operation of the light receiving unit.

  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 an imaging unit 10, a grip 30, and an imaging auxiliary tool (indicator) 50 (see FIG. 1).

  Details of the photographing unit 10 will be described. The imaging unit 10 includes a light receiving unit 11 and a cable 17.

  The light receiving unit 11 includes an X-ray light receiving unit. The X-ray light receiving unit of the light receiving unit 11 includes an X-ray imaging element such as a scintillator that converts X-rays into visible light, and a CCD that converts the visible light into electric charges. In the case where an electric wire directly connected to the X-ray imaging device is provided on the flexible substrate, a substrate for connecting the flexible substrate and the cable 17 may be provided inside the light receiving unit 11.

  In addition, an electric circuit for driving the X-ray imaging element of the light receiving unit 11 may be provided inside the light receiving unit 11. However, the members constituting the electric circuit for driving the X-ray imaging device may be arranged in a grip 30 described later, an image processing apparatus in the subsequent stage, or the like.

  The cable 17 is an electric wire for supplying power to the X-ray light receiving unit and transmitting / receiving signals, and is connected to a grip 30 described later. The cable 17 may be configured to extend from the back surface of the light receiving unit 11 to the grip 30, or may be configured to extend to the grip 30 through the inner side of the rotation shaft 53 and not visible from the outside.

  In addition, instead of a mode in which signal transmission / reception from the X-ray light receiving unit is performed via the cable 17, a mode in which the signal is transmitted wirelessly may be employed. In this case, a device that performs wireless communication and a battery that drives the device and the X-ray imaging device are built in the light receiving unit 11.

  The light receiving unit 11 may be configured to hold an X-ray film in place of the mode including the X-ray light receiving unit. In this case, the cable 17 becomes unnecessary.

  The grip 30 is attached to the photographing auxiliary tool 50 in a state of being rotatable around the rotation shaft 53 via a bearing portion 31 serving as a bearing for the rotation shaft 53. The grip 30 includes a battery that supplies power to the X-ray image sensor, a control unit that controls the X-ray image sensor, and an image processing device that performs image processing on an image signal obtained by the X-ray image sensor. Alternatively, the image signal may be transmitted from the grip 30 to an external image processing apparatus (for example, a personal computer) in a wired or wireless manner.

  A first lock mechanism 33 that controls the rotatable state of the grip 30 around the rotation shaft 53 is provided in the grip 30 (or the retaining portion 55). When the locked state by the first lock mechanism 33 is released, the grip 30 is brought into a rotatable state around the rotation shaft 53. When locked by the first lock mechanism 33, the grip 30 is fixed to the retaining portion 55 in a non-rotatable state around the rotation shaft 53. Even if the first locking mechanism 33 is locked and the grip 30 is fixed to the retaining portion 55, the rotation operation around the rotation shaft 53 of the light receiving portion 11 is not limited.

  For example, as shown in FIG. 2, when the grip 30 is fixed in a positional relationship such that the light receiving portion 11 is located above the retaining portion 55 and the grip 30 is located below the retaining portion 55 as viewed from the side. The light receiving unit 11 can be easily positioned near the upper teeth, and the grip 30 is fixed in a positional relationship such that the light receiving unit 11 and the grip 30 are located above the retaining unit 55 as shown in FIG. If the inner X-ray imaging apparatus 1 is turned upside down, the light receiving unit 11 can be easily located near the lower teeth.

  The grip 30 may be held by the subject or may be held by an operator such as a dentist. Since the holding of the light receiving unit 11 and the like is performed by gripping the grip 30, it is not necessary to bite the retaining unit 55 for holding the light receiving unit 11 and the like, and shooting is performed with the mouth open. Is possible. For this reason, even when the subject cannot perform occlusion successfully, the X-ray imaging element or the like can be maintained in the oral cavity. Further, since the grip 30 holds the members other than the grip 30 of the dental intraoral X-ray imaging apparatus 1 (the light receiving unit 11 and the imaging assisting tool 50 that holds the light receiving unit 11), the members are held by occlusion. Compared to the form, there is an advantage that holding can be easily performed even if the weight of the retaining portion 55 and the like is increased. In addition, since the grip 30 is separated from the light receiving unit 11, there is an advantage that the hand holding the grip 30 is hardly affected by the radiation from the X-ray device 70.

  By changing the angle (second angle θ2) formed by the grip 30 and the retaining portion 55, light is received in a positional relationship (holding position of the grip 30) convenient for the person holding the grip 30 (subject or operator). The part 11 can be inserted into an appropriate position in the oral cavity.

  Further, by moving the grip 30, the position of the rotation shaft 53 in the oral cavity is changed, and accordingly, the position where the light receiving unit 11 and the retaining unit 55 are in contact with a part in the oral cavity such as the palate is changed. The angle (first angle θ1) formed by the imaging surface of the X-ray imaging device of the unit 11 and the retaining unit 55 also changes. Information about the first angle θ1 is shown in an angle display unit 57 provided outside the oral cavity as will be described later.

  Therefore, it is possible to freely change the direction of the normal of the imaging surface of the X-ray imaging device of the light receiving unit 11 with the grip 30 held. That is, when the user (operator or subject) holds the grip 30, the light receiving unit 11 is held in a state where the first angle θ1 can be adjusted.

  The light receiving unit 11 and the grip 30 are made rotatable with respect to the retaining unit 55, but by using the rotating shaft 53 in common, it is possible to simplify the mechanism related to the rotational motion. By simplifying, it becomes possible to easily hold the grip 30 correctly without breaking even a subject who is not familiar with it.

  Further, the grip 30 is looser in size than the retaining portion 55 and the light receiving portion 11, and it is easy to secure a space for incorporating an electric component such as a battery inside. Further, by collecting as much electrical parts as possible inside the grip 30, it becomes possible to lighten the members other than the grip 30 of the dental intraoral X-ray imaging apparatus 1 (the light receiving unit 11 and the imaging aid 50). When the grip 30 is gripped, it is possible to hold members (the light receiving unit 11 and the imaging aid 50) other than the grip 30 of the dental intraoral X-ray imaging apparatus 1 in a stable state.

  In the present embodiment, the grip 30 has been described as being configured by a single rod-shaped member having a polygonal prism shape, but two or more rod-shaped members and a joint member such as a ball joint are the two or more rod-shaped members. The form which is provided between them and changes the shape of the grip 30 by changing the angle formed by the two or more rod-shaped members may be used. However, from the viewpoint of simplification of the structure including durability, it is constituted by an integral rod-like member without providing such a joint member, and only by a rotating operation around the rotation shaft 53 in the bearing portion 31 provided at the end portion. A form in which the positional relationship between the grip 30 and the retaining portion 55 is determined is desirable.

  Next, details of the photographing assisting tool 50 will be described. The photographing assisting tool 50 includes a rotation shaft 53, a retaining part (retaining substrate) 55, an angle display part 57, and a guide part 59.

  The light receiving unit 11 is attached to a connection unit 53 a on the rotation shaft 53. The connection portion 53a is provided at a portion inserted into the oral cavity of the retaining portion 55 during imaging using the X-ray apparatus 70 including the X-ray source LS, and an angle (first angle θ1) formed with the retaining portion 55 is set. The light receiving unit 11 is held in a changeable state. The light receiving part 11 may be fixed to the connection part 53a by screwing or the like, or may be attached to the connection part 53a in a detachable state with a part of the light receiving part 11 interposed therebetween. The form in which the part 11 and the retaining part 55 are integrally formed may be sufficient.

  When the light receiving unit 11 is rotated around the rotation shaft 53 within a range necessary for photographing with the light receiving unit 11 attached to the connection unit 53a, the light receiving unit 11 and the connection unit 53a do not interfere with the retaining unit 55. As such, the dimensions of these members are determined.

  The rotating shaft 53 has a light receiving portion 11 attached to one end via a connecting portion 53a, an angle display portion 57 attached to the other end, and the rotating shaft 53 of the light receiving portion 11 attached to the connecting portion 53a. Is transmitted to the angle display unit 57 via the rotation shaft 53, and the angle display unit 57 is rotated. Similarly, the rotational movement around the rotation shaft 53 of the angle display unit 57 is transmitted to the light receiving unit 11 attached to the connection unit 53 a via the rotation shaft 53 to rotate the light receiving unit 11. Further, a biasing member 53b such as a spring is provided on the rotating shaft 53 or the like so that a biasing force is applied so that the front side of the light receiving unit 11 attached to the connection unit 53a approaches the upper surface of the retaining unit 55 ( (See FIG. 5).

  Further, a second lock mechanism 35 that controls the rotatable state of the light receiving unit 11 around the rotation shaft 53 may be provided. When the second lock mechanism 35 is in the locked state, the first angle θ1 does not change, and the lock state by the second lock mechanism 35 is released by the operation of the operation button provided on the grip 30 or the like. The light receiving unit 11 is rotated by the urging force (see FIG. 7). Since the grip 30 and the light receiving unit 11 share the rotating shaft 53, it is possible to provide the grip 30 with a structure including an operation button that is interlocked with the second lock mechanism 35. The positional relationship between the light receiving unit 11 and the retaining unit 55 can be easily adjusted by the second lock mechanism 35.

  The retaining portion 55 is a member having an L-shape when viewed from above. The light receiving portion 11 is attached to one end portion of the retaining portion 55 via the rotation shaft 53, and the guide portion 59 is disposed on the other end portion. Is attached.

  The angle display portion 57 is attached to a portion of the retaining portion 55 that is not inserted into the oral cavity so that it can be seen from outside the oral cavity even when the connection portion 53a is inserted into the oral cavity, and has a cylindrical shape. On the top surface (or the cylindrical portion (side surface)) of the information (the first angle θ1, see FIGS. 2 to 4) formed by the light receiving unit 11 attached to the connecting portion 53a and the retaining unit 55. As shown, a scale including a plurality of mark lines is attached.

  In the present embodiment, a mode in which information about the first angle θ1 is mechanically transmitted to the angle display unit 57 via the rotation shaft 53 will be described. However, information about the first angle θ1 is detected in the vicinity of the light receiving unit 11, It may be configured to be electrically transmitted to the angle display unit 57 for display.

  Based on the positional relationship between the scale of the angle display portion 57 and the retaining portion 55, that is, based on the reference line closest to the reference position (for example, the upper surface of the retaining portion 55), it is inserted into the oral cavity and cannot be seen (connection) It is possible to read information on the angle (first angle θ1) formed between the light receiving unit 11 and the holding unit 55 (attached to the unit 53a), and to align the X-ray apparatus 70 in the positioning unit 59c of the guide unit 59. used.

  In the state where the reamer is attached, the imaging target tooth cannot come into contact with the retaining portion 55. Therefore, in order to avoid the reamer at the position where the distal end of the imaging subject tooth in the retaining portion 55 approaches during imaging, It is desirable to provide a notch (or hole) 55a at a position facing the imaging target tooth.

  At the time of imaging using the X-ray apparatus 70, the guide unit 59 is attached to the retaining unit 55 so as to face the light receiving unit 11 attached to the connection unit 53a.

  The guide part 59 includes a retaining part connection part 59a, a guide ring 59b, and a positioning part 59c. The guide part 59 is attached to the retaining part 55 so that the guide ring 59b faces the light receiving part 11 attached to the connection part 53a, and is used for positioning the irradiation port of the X-ray apparatus 70 in X-ray imaging. Is done.

  The retaining portion connecting portion 59a is a member that is attached to an end portion of a portion that is not inserted into the oral cavity of the retaining portion 55 during imaging using the X-ray device 70.

  The guide ring 59b has an oblong shape that is vertically long when viewed from the connection portion 53a side (may be substantially U-shaped with an open upper portion (see FIG. 6)), and is attached to the retaining portion connection portion 59a. .

  The guide ring 59b is on a reference line LP that passes through the center of the imaging surface of the X-ray imaging device and is perpendicular to the imaging surface when viewed from above the retaining portion 55, and is separated from the imaging surface by a first distance (200 mm). It is used to position the X-ray apparatus 70 including the X-ray source LS so that the X-ray source LS is disposed at the predetermined position (see FIG. 5).

  A positioning portion 59c is provided on the side portion of the guide ring 59b. In the positioning part 59c, information (a plurality of positioning marks) corresponding to the scale mark lines of the angle display part 57 is described. It is desirable that the scale mark line of the angle display unit 57 and the positioning mark of the positioning unit 59c that are in a corresponding relationship are indicated by the same color (or the same symbol or character).

  The central axis of the X-ray bundle emitted from the X-ray source LS installed in accordance with the positioning mark corresponding to the mark line closest to the reference position (for example, the upper surface of the retaining part 55) among the mark lines on the scale of the angle display part 57 LX may be substantially perpendicular to a bisector of a surface including the imaging surface of the X-ray imaging element incorporated in the light receiving unit 11 and the tooth axis of the imaging target tooth when viewed from the side of the retaining unit 55. A plurality of positioning marks are provided on the positioning portion 59c so as to be able to do so (see FIG. 4).

  That is, when the X-ray device 70 is installed in accordance with the positioning mark corresponding to the information related to the first angle θ1 among the two or more positioning marks, the central axis LX of the X-ray bundle emitted from the X-ray source LS However, when viewed from the measuring method of the retaining unit 55, two or more positioning objects are used so that the plane can be substantially perpendicular to the bisecting plane between the surface including the imaging surface of the light receiving unit 11 and the tooth axis of the imaging target tooth. A mark is provided on the positioning portion 59c.

  When the first angle θ <b> 1 is small, that is, when the imaging surface of the X-ray imaging device is in a state of being nearly parallel to the upper surface of the retaining unit 55, the angle display unit 57 corresponding to the positioning mark away from the retaining unit 55. The mark line of the scale is close to the reference position.

  When the first angle θ1 is large, that is, when the imaging surface of the X-ray imaging device is close to the upper surface of the retaining unit 55, the scale of the angle display unit 57 corresponding to the positioning mark near the retaining unit 55 The mark line becomes closer to the reference position.

  The X-ray apparatus 70 is an apparatus that emits X-rays from one X-ray light source LS through an irradiation port, and is used when obtaining an X-ray image. The irradiation port of the X-ray apparatus 70 has a surface perpendicular to the central axis LX of the X-ray bundle emitted from the X-ray source LS.

  When the irradiation port of the X-ray apparatus 70 is installed at a predetermined position of the guide ring 59b (position corresponding to the positioning mark of the positioning portion 59c corresponding to the mark line of the scale closest to the reference position) from above As seen from the side, the guide ring 59b has a substantially arc shape so that the central axis LX of the X-ray bundle emitted from the X-ray source LS passes through the center of the imaging surface of the X-ray imaging device. It has a substantially linear shape when viewed from above (see FIG. 5).

  For this reason, the reference line LP passing through the center of the imaging surface of the X-ray light receiving unit and perpendicular to the imaging surface and the central axis LX of the X-ray bundle emitted from the X-ray source LS when viewed from above the retaining unit 55 Due to the overlapping positional relationship, the irradiation port of the X-ray apparatus 70 is disposed in the vicinity of the guide ring 59b.

  If a linear index parallel to the central axis LX when viewed from the side is provided on the side of the X-ray apparatus 70 and the index is aligned with the positioning mark of the positioning portion 59c, alignment is easy. (See FIG. 4).

  At the time of imaging using the X-ray apparatus 70, a part of the imaging unit 10 such as the light receiving unit 11 and a part of the imaging assistance tool 50 such as the connection unit 53a are inserted into the oral cavity of the subject, The photographing assisting tool 50 is held by the grip 30 in a state where the tooth axis and the retaining portion 55 are perpendicular to each other. At this time, the angle display part 57 and the guide part 59 are located outside the oral cavity. However, the angle formed between the tooth axis of the imaging target tooth and the retaining portion 55 may not be vertical.

  Moreover, at the time of imaging | photography, a waterproof cover is covered by the part (a part of retaining part 55, the light-receiving part 11, and a part of the cable 17) inserted in the test subject's oral cavity of the dental intraoral X-ray imaging apparatus 1. Is desirable.

  Next, an operation procedure will be described. The part including the light receiving unit 11 of the dental intraoral X-ray imaging apparatus 1 in a state where a part of the retaining unit 55, the light receiving unit 11 and the like are covered with a waterproof cover, Inserted into. Prior to insertion, the grip 30 is held in a state in which the grip 30 and the retaining portion 55 (second angle θ2) are easily used by the user by the first lock mechanism 33 provided in the bearing portion 31. It is desirable to fix to.

  The positional relationship between the light receiving unit 11 and the retaining unit 55 in the oral cavity is determined based on the shape in the oral cavity of the subject, the position where the dental intraoral X-ray imaging apparatus 1 is inserted, and the first angle θ1 is determined. decide. When the second locking mechanism 35 is provided, the dental intraoral X-ray imaging apparatus 1 is in a locked state in which the light receiving unit 11 and the retaining unit 55 are fixed in a widened state (the first angle θ1 is small). When a part is inserted into the oral cavity and then the operation button is operated to release the locked state, and the light receiving unit 11 comes into contact with the palate or the like, the positional relationship between the light receiving unit 11 and the retaining unit 55 in the oral cavity is determined. To do.

  The user of the dental intraoral X-ray imaging apparatus 1 looks at the scale of the angle display unit 57, confirms the mark line closest to the reference position, and indicates the index for the positioning mark corresponding to the mark line in the positioning unit 59c. The irradiation port of the X-ray apparatus 70 is installed so as to match. Thereafter, an imaging operation is performed by performing predetermined operations such as X-ray irradiation by the X-ray apparatus 70, inputting of a medical chart number, and starting of a power source.

  In the imaging operation, the X-ray imaging device images visible light converted by the scintillator. The image signal obtained by the imaging operation is subjected to image processing for obtaining an X-ray image by an image processing device built in the grip 30 (or an external image processing device connected to the grip 30 by wire or wirelessly). Applied.

  Further, if the irradiation port of the X-ray device 70 is arranged in accordance with the positioning mark of the positioning portion 59c corresponding to the mark line closest to the reference position (for example, the upper surface of the retaining portion 55), the X-ray device 70 The central axis LX of the X-ray bundle emitted from the X-ray source LS is the second degree between the surface including the imaging surface of the X-ray light receiving unit built in the light receiving unit 11 and the tooth axis of the imaging target tooth when viewed from the side. The X-ray image of the imaging target tooth can be obtained in a state close to the actual length by the bisection imaging method.

  In the present embodiment, in consideration of the bisector imaging method, that is, the central axis LX of the X-ray bundle includes the imaging surface of the X-ray imaging element built in the light receiving unit 11 when viewed from the side. Although the shape of the side portion of the guide ring 59b and the positioning mark of the positioning portion 59c are determined so as to be substantially perpendicular to the bisector of the surface and the tooth axis of the imaging target tooth, These may be determined in consideration of the imaging method.

  For example, the shape of the side portion of the guide ring 59b or the like so that the central axis LX of the X-ray bundle is substantially perpendicular to the surface including the imaging surface of the X-ray imaging element built in the light receiving unit 11 when viewed from the side. The positioning mark of the positioning portion 59c may be determined.

DESCRIPTION OF SYMBOLS 1 Dental intraoral X-ray imaging apparatus 10 Imaging part 11 Light-receiving part 17 Cable 30 Grip 31 Bearing part 33 1st locking mechanism 35 2nd locking mechanism 50 Imaging assistance tool 53 Rotating shaft 53a Connection part 53b Energizing member 55 Holding part 57 Angle display section 59 Guide section 59a Retaining section connection section 59b Guide ring 59c Positioning section 70 X-ray device LX central axis LP A line that passes through the center of the imaging surface of the X-ray light receiving section and is perpendicular to the imaging surface LS X Radiation source

Claims (5)

A light receiving unit having an X-ray image sensor or an X-ray film;
An imaging aid having a retaining part, a rotating shaft, and a guide part ;
With a grip,
The light receiving portion is rotatable about the rotation shaft, and is attached to the rotation shaft in a state in which a first angle formed with the retaining portion can be changed,
The connection part to which the light receiving part in the rotating shaft is attached is provided at a part inserted into the oral cavity of the retaining part at the time of imaging using an X-ray apparatus including an X-ray source,
An urging member is provided so that an urging force is applied so that the light receiving surface of the X-ray imaging element or the X-ray film of the light receiving unit attached to the connection unit approaches the holding unit,
The grip is rotatable about the rotation axis , and is attached to the photographing auxiliary tool in a state in which a second angle formed with the retaining portion can be changed .
The guide part is used for positioning the irradiation port of the X-ray apparatus during the imaging,
The retaining part is a member having an L shape when viewed from above,
The L-shape is one of two sides constituting the L-shape, the first member to which the light receiving unit is attached via the rotation shaft, and the other of the two sides constituting the L-shape. A second member to which the guide portion is attached;
A dental intraoral X-ray imaging apparatus , wherein the bearing of the grip is the first member, and is attached between the connection portion of the second member and the first member, and the light receiving portion. .   The dental intraoral X-ray imaging apparatus according to claim 1, further comprising a first lock mechanism that controls a rotatable state of the grip about the rotation axis.   The dental intraoral X-ray imaging apparatus according to claim 2, further comprising a second lock mechanism that controls a rotatable state of the light receiving unit around the rotation axis.   2. The dental oral cavity according to claim 1, wherein the grip is formed of a rod-shaped member, and a positional relationship between the grip and the retaining portion is determined only by a rotation operation around the rotation axis. X-ray imaging device. The retaining part has an angle display part for displaying information on the first angle,
The angle display unit is provided at a position where information on the angle is visible outside the oral cavity when the light receiving unit is inserted into the oral cavity.
The guide unit includes a guide ring used for the positioning of the X-ray apparatus so that the X-ray source is arranged in a position apart a predetermined distance from the imaging surface of the light receiving portion, the guide 2. A dental intraoral X according to claim 1, further comprising a positioning portion provided on the ring and including two or more positioning marks for positioning the X-ray irradiation port of the X-ray apparatus corresponding to the information related to the angle. X-ray equipment.

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