JP6541883B1 - Dental X-ray equipment - Google Patents

Abstract

  Provided is a dental X-ray imaging apparatus capable of easily positioning a subject's head. A pivot arm 10 including an X-ray generation unit 2 and an X-ray detection unit 3 which can be arranged opposite to each other, a jaw positioning unit 50 for supporting a jaw of a subject, a support unit 30 and a jaw positioning unit 50 A second camera 34 provided in one of the X-ray generator 2 and the X-ray detector 3 and capable of imaging the jaw of the subject; And a monitor unit 60 disposed in the vicinity of the jaw positioning unit 50 and configured to be able to display an image captured by the first camera 33 and the second camera 34, and the X-ray generation unit 2 and the X-ray Of the detection unit 3, one of the detection units 3 that does not have the second camera 34 is configured to be retractable from a position opposite to the other that has the second camera 34.

Description

  The present invention relates to a dental X-ray imaging apparatus in which head positioning of a subject is performed.

  In radiography in dentistry, after the operator guides the subject to a designated position of the X-ray imaging apparatus, the subject's head is positioned. Specifically, the head position of the subject is performed by adjusting the device while the operator instructs the subject.

  The X-ray imaging apparatus described in Patent Document 1 includes a front camera that captures the front of the subject's head and a side camera that captures the side of the subject's head to easily position the subject's head. Is disclosed. The front camera is provided in the vicinity of the chin rest, and the side camera is provided in the vicinity of the X-ray irradiator provided on the swing arm. The operator can position the head of the subject based on the images captured by the front camera and the side camera.

JP 2002-34973 A

  In the X-ray imaging apparatus of Patent Document 1, the X-ray irradiator and the X-ray image receiver are disposed opposite to each other on the swing arm, and the side camera is provided in the vicinity of the X-ray irradiator. For this reason, after the subject is introduced into the X-ray imaging apparatus, the X-ray irradiator and the X-ray receiver are present on the left and right of the subject's head in a state where the side of the subject's head is photographed by the side camera. Therefore, when the subject's head was positioned, it was difficult for the operator to adjust the device from the left and right sides of the subject.

  In view of the above situation, there is a need for a dental X-ray imaging apparatus that can easily position the head of a subject.

A characteristic configuration of the dental X-ray imaging apparatus according to the present invention includes: a swing arm including an X-ray generation unit and an X-ray detection unit, which can be disposed opposite to each other
An arm support which pivotally supports the pivot arm;
A support for supporting the arm support so as to be movable up and down;
A jaw positioning unit supported so as to be able to move up and down on the support unit and supporting a jaw of the subject;
A first camera provided in any one of the post and the jaw positioning unit and capable of photographing the jaw of the subject supported by the jaw positioning unit;
A second camera provided in any one of the X-ray generation unit and the X-ray detection unit and capable of imaging the jaw of the subject supported by the jaw positioning unit;
And a monitor unit disposed in the vicinity of the jaw positioning unit and configured to be capable of displaying a photographed image of the first camera and the second camera.
One of the X-ray generation unit and the X-ray detection unit is configured to be retractable from a position where one of the X-ray generation unit and the X-ray detection unit does not have the second camera faces the other one having the second camera.

  According to this configuration, it is possible to display an image obtained by photographing the jaw of the subject with the camera in two directions on the monitor near the jaw positioning unit. Thus, the operator can position the jaws of the subject placed on the jaw positioning unit while confirming the images captured from the two directions displayed on the monitor unit. As a result, the subject's head can be positioned accurately.

  Further, among the X-ray generation unit and the X-ray detection unit provided in the turning arm, one of the X-ray generation unit and the X-ray detection unit is configured to be retractable from a position opposite to the other one having the second camera. . With this configuration, for example, when the X-ray generation unit has the second camera, the X-ray detection unit that does not have the second camera is retracted from the position where the X-ray generation unit has the second camera. The X-ray detection unit can be separated from the imaging region. In addition, a space for the operator can be secured at a position facing the second camera with the subject interposed therebetween, and the operator can adjust the apparatus from the side of the subject. As a result, the operator can easily position the subject's head.

  Another characteristic configuration is that, of the X-ray generation unit and the X-ray detection unit, one of the X-ray generation unit and the X-ray detection unit that does not have the second camera independently operates from the position where it is disposed opposite to the other one having the second camera. The point is to retract by moving around the rotation axis of the arm.

  According to this configuration, for example, when the X-ray generation unit has the second camera, the X-ray detection unit that does not have the second camera independently from the position where the X-ray generation unit has the second camera The X-ray detection unit can be separated from the imaging region of the second camera by evacuating by moving to. Further, by moving one of the X-ray generation unit and the X-ray detection unit without the second camera around the rotation axis of the swing arm, one without the second camera is accommodated in the swing area of the swing arm As a result, the dental X-ray imaging apparatus can be made compact.

  Another feature is that the front of the jaw is photographed by the first camera and the side of the jaw is photographed by the second camera.

  According to this configuration, the front surface and the side surface of the jaw can be photographed by the two cameras, and the front image and the side image can be displayed on the monitor unit. As described above, in the case of the front image and the side image of the jaw, when the position or the posture of the subject's jaw changes by adjusting the apparatus etc., it is easy to recognize the degree of the change. Therefore, by referring to the photographed images of the front of the jaw and the side of the jaw, it is possible to improve the accuracy of the positioning of the head of the subject.

Another feature configuration further includes a control unit that controls display by the monitor unit,
The monitor unit is removable and is configured to be able to communicate with the control unit even in a detached state.

  According to this configuration, since the monitor unit can communicate with the control unit even in the removed state, the monitor unit can be operated even at a position away from the X-ray imaging apparatus by removing the monitor unit Become. As a result, the operability of the X-ray imaging apparatus using the monitor unit is improved.

  In another feature configuration, an X-ray imaging area is designated in at least one of the first image captured by the first camera and the second image captured by the second camera displayed on the monitor unit. Then, the pivot arm is configured to pivot to a position that enables imaging of the imaging region.

  According to this configuration, the swing arm moves to the shootable position only by designating the shooting area in the shot image by the first camera and the second camera, and thus the operation for moving the swing arm to the shootable position is unnecessary. become. Thereby, the operation of the X-ray imaging apparatus can be simplified.

A characteristic configuration of the dental X-ray imaging apparatus according to the present invention includes: a swing arm including an X-ray generation unit and an X-ray detection unit, which can be disposed opposite to each other
An arm support which pivotally supports the pivot arm;
A support for supporting the arm support so as to be movable up and down;
A jaw positioning unit supported so as to be able to move up and down on the support unit and supporting a jaw of the subject;
A first camera provided in any one of the post and the jaw positioning unit and capable of photographing the jaw of the subject supported by the jaw positioning unit;
A second camera provided in any one of the X-ray generation unit and the X-ray detection unit and capable of imaging the jaw of the subject supported by the jaw positioning unit;
One of the X-ray generation unit and the X-ray detection unit is configured to be retractable from a position where one of the X-ray generation unit and the X-ray detection unit does not have the second camera faces the other one having the second camera.

FIG. 1 is a perspective view of a dental X-ray imaging apparatus. 1 is a partial side view of a dental X-ray imaging apparatus. It is a partial front view of a dental X-ray imaging apparatus. It is a plane sectional view showing the photography state by the 1st camera and the 2nd camera. It is a block block diagram of a dental X-ray imaging apparatus. It is a side view which shows the imaging | photography state by a 1st camera. It is a figure which shows an example of the picked-up image of the 1st camera displayed on a monitor part. It is a figure which shows an example of the picked-up image of the 2nd camera displayed on a monitor part. It is a fragmentary side view showing another form of X-ray imaging system. It is a figure which shows the gaze derivative of another form. It is a figure which shows the gaze derivative of another form. It is a figure which shows the gaze derivative of another form.

  Hereinafter, embodiments of the present invention will be described based on the drawings.

  The dental X-ray imaging apparatus A shown in FIGS. 1 to 6 has a panoramic tomography mode and a CT tomography mode. The X-ray imaging apparatus A supports a swing arm 10 having an X-ray generation unit 2 and an X-ray detection unit 3, an arm support unit 20 for swingably supporting the swing arm 10, and elevating support of the arm support unit 20. And a supporting column 30. In the swing arm 10, the X-ray generation unit 2 and the X-ray detection unit 3 are arranged so as to be opposed to each other. The column unit 30 includes a column main body 31 erected on a base 40 installed on a floor surface, and an elevating body 32 attached to the column main body 31 so as to be movable up and down. The arm support portion 20 is attached to the upper portion of the elevating body 32 and moves up and down together with the elevating body 32. The elevating body 32 is configured to be vertically movable up and down with respect to the column main body 31 via an elevating mechanism (not shown) such as a motor.

  The pivot arm 10 includes an X-ray generator 2 and an X-ray detector 3. The pivoting arm 10 is pivotably attached to the arm support 20 about a rotation axis P. In the swing arm 10, the X-ray generation unit 2 and the X-ray detection unit 3 are provided so as to be able to face each other with the rotation axis P interposed therebetween. The X-ray detection unit 3 is configured to be retractable from a position opposite to the X-ray generation unit 2. In the present embodiment, the X-ray detection unit 3 is configured to be movable around the rotation axis P of the swing arm 10 independently from the position opposite to the X-ray generation unit 2.

  The X-ray generation unit 2 is configured by an X-ray generator such as an X-ray tube, a slit that regulates the spread of the X-ray beam, and the X-ray detection unit 3 is an X-ray such as a CCD sensor etc. It consists of a line detector.

  In the X-ray imaging apparatus A, the vertical direction in which the elevating body 32 moves up and down is the Z axis, and the X axis (for example, the extending direction of the arm support portion 20) orthogonal to the Z axis; In the three-dimensional axial direction consisting of the direction), at least the pivot arm 10 is controlled in position in two dimensions of the X axis direction and the Y axis direction. The pivoting arm 10 is capable of two-dimensional movement in a horizontal plane area by an XY table (not shown) built in the arm support portion 20.

  Below the pivoting arm 10, a jaw positioning unit 50 for supporting the jaws of the subject B is provided. As shown in FIGS. 2 and 3, the jaw positioning unit 50 includes a support frame 51 and a main body 52. One end of the support frame 51 is attached to the elevating body 32, and the main body 52 is disposed at the other end of the support frame 51. Thus, the jaw positioning unit 50 is supported by the column unit 30 so as to be capable of moving up and down, and along with the vertical movement of the elevating body 32, the swing arm 10 and the jaw positioning unit 50 integrally move up and down.

  The main body 52 is provided with a head fixing portion 53 for fixing the head of the subject B, and the support frame 51 is provided with a handle 54 for the subject B to grip. The head fixing unit 53 has a chin rest 55 for supporting the jaw of the subject B and a pair of side head presses 56 in order to stably fix the head of the subject B at the time of imaging. The side head restraints 56 are disposed left and right to fix the temporal side. The distance between the pair of side head restraints 56 can be adjusted by a dial 57 provided on the side of the chin rest 55. At the top of the chin rest 55, a bite block 58 for opening the subject B is provided.

  A first camera 33 is attached near the support frame 51 of the jaw positioning unit 50, and a second camera 34 is provided in the X-ray generation unit 2 of the swing arm 10. The first camera 33 and the second camera 34 are provided to capture an image of a face including the jaw of the subject B supported by the jaw positioning unit 50. In the present embodiment, the first camera 33 is provided on a camera support 35 attached to the elevating body 32. The support frame 51 extends from the camera support 35. The first camera 33 and the second camera 34 are configured not only as a photographic camera but also as a video camera capable of continuous shooting. The first camera 33 is capable of photographing from the front direction of the jaw of the subject B supported by the jaw positioning unit 50 and moves up and down together with the jaw positioning unit 50 to acquire an image of the front of the jaw of the subject B . On the other hand, the second camera 34 moves the X-ray generation unit 2 to the lateral position of the subject B in the swing arm 10 to acquire an image of the side surface of the chin of the subject B.

  Hereinafter, with reference to FIG. 8, the relationship between the Frankfurter plane F and the occlusal plane G of the subject B and the first camera 33 will be described. As shown in FIG. 8, when the head of the subject B is positioned so that the Frankfurter plane F is parallel to the horizontal plane H shown in FIG. 6, the anatomical structure of the jaw of the subject B in panoramic radiography becomes It is known to be taken clearly. Here, the horizontal plane H is a plane parallel to the mounting surface (for example, a floor surface) of the X-ray imaging apparatus A. The occlusal plane G, in which the upper and lower teeth are in contact, has a predetermined angle with respect to the Frankfurt plane F, and when the Frankfurt plane F is parallel to the horizontal plane H, the occlusal plane G is from the horizontal plane H to the front of the subject B It is inclined downward. Therefore, in the present embodiment, as shown in FIG. 6, the first camera 33 is disposed such that the optical axis C of the first camera 33 is directed obliquely upward with reference to the horizontal surface H, and the jaw positioning unit 50 is Photograph the jaw of subject B supported by.

  Thereby, the optical axis C of the first camera 33 can be positioned on the occlusal plane G (see FIG. 8). In a state in which the optical axis C of the first camera 33 is in the occlusal plane G, the occlusal site where the upper and lower teeth of the subject B occlude in the photographed image (first image 33a) of the first camera 33 becomes linear (FIG. 7) reference). An occlusion line D, which is a straight line extending in the lateral direction, is superimposed on the first image 33a. Therefore, by confirming that the occlusal region and the occlusal line D overlap in the photographed image of the first camera 33, the posture of the jaw of the subject B in the X-ray imaging is appropriate, that is, the Frankfurter of the subject B It can be determined whether the plane F is parallel to the horizontal plane H or not. As a result, head positioning of the subject B can be easily performed.

  The occlusal plane G is inclined at an average of 12 degrees with respect to the Frankfurt plane F. For this reason, it is preferable to dispose the first camera 33 so that the optical axis C inclines upward by 10 to 15 degrees with reference to the horizontal plane H in consideration of individual differences. In this manner, by disposing the first camera 33 such that the inclination angle of the optical axis C of the first camera 33 with respect to the horizontal plane H is within a narrow range including 12 degrees, The optical axis C of the first camera 33 can be easily positioned on the occlusal plane G, and the Frankfurt plane F can be easily made parallel to the horizontal plane H. Thus, the head position of the subject B based on the image captured by the first camera 33 can be positioned more accurately by a simple method.

  As shown in FIG. 6, the X-ray imaging apparatus A is 60 to 80 mm above the optical axis C of the first camera 33 in the vertical direction of the horizontal plane H and on a virtual parallel line K parallel to the optical axis C There is a line-of-sight derivative 70 for guiding the line of sight of the subject B. In the present embodiment, as shown in FIG. 1 to FIG. 3, the test subject B is positioned 60 to 80 mm upward with respect to the point of intersection with the optical axis C of the first camera 33 in the elevating body 32 of the support 30. A line of sight derivative 70 is arranged to guide the line of sight of the subject. In the subject, the distance from the occlusal position of the teeth to the viewpoint position is usually between 60 and 80 mm. The line-of-sight derivative 70 is disposed at a position lower than the position of the eye of the subject B whose jaw is placed on the jaw positioning unit 50, and the subject B looks directly at the line-of-sight derivative 70 according to the operator's instruction. The head of B is in the forward leaning posture. Thereby, the subject B can be positioned so as to make the Frankfurt plane F parallel to the horizontal plane H by using the motion of the subject B itself. As a result, it is possible to position the subject B's head more easily. In the present embodiment, the line-of-sight derivative 70 is configured of a circular seal body. The shape of the seal body is not limited to a circular shape, and may be another shape such as a triangle or a square.

  An operation panel 60 (an example of a monitor unit) is attached to the support frame 51 of the jaw positioning unit 50 via a bracket 51a. The operation panel 60 is attached to the support frame 51 so as to be changeable in posture. The operation panel 60 is configured to be able to display a photographed image photographed by the first camera 33 and the second camera 34. The operation panel 60 is formed of, for example, a touch panel, and icons for instructing various operations of the X-ray imaging apparatus A are displayed, and the operation is selected by touching the corresponding icon.

  FIG. 5 is a block diagram of the X-ray imaging apparatus A. The X-ray imaging apparatus A is configured to include a control unit 80. The control unit 80 controls the X-ray generation unit 2, the X-ray detection unit 3, the swing arm 10, the elevating body 32, the first camera 33 and the second camera 34, the head fixing unit 53, and the like. The control unit 80 can control display on the operation panel 60 and can execute various controls based on an instruction from the operation panel 60. The operation panel 60 is removable from the support frame 51, and is configured to be able to communicate with the control unit 80 even in the removed state.

  Next, how to use the X-ray imaging apparatus A will be described. Before guiding the subject B to the X-ray imaging apparatus A, as shown in FIG. 4, the X-ray generation unit 2 having the second camera 34 is started from the state where the X-ray generation unit 2 and the X-ray detection unit 3 face each other. On the other hand, the X-ray detection unit 3 not having the second camera 34 is independently moved around the rotation axis P of the swing arm 10. Thus, as shown by the two-dot chain line in FIG. 4, the X-ray detection unit 3 is on the right side of the subject B like the X-ray generation unit 2 and the imaging area 33S of the first camera 33 and the second camera 34 It can be moved to a position not overlapping any of the imaging regions 34S. After the subject B is guided to the X-ray imaging apparatus A, the X-ray detection unit 3 may be independently moved around the rotation axis P of the swing arm 10 with respect to the X-ray generation unit 2.

  As described above, in the pivoting arm 10, the X-ray detection unit 3 without the second camera 34 independently rotates from the position where the X-ray detection unit 3 is disposed opposite to the X-ray generation unit 2 with the second camera 34 It retracts by moving around the axis P. Since the X-ray detection unit 3 moves around the rotation axis P, the X-ray detection unit 3 can be contained in the turning area of the turning arm 10 even after retraction. Thereby, the X-ray detection unit 3 can be separated from the imaging region 34S of the second camera 34. In addition, a space for the operator can be secured at a position facing the second camera 34 across the subject B, and the operator can adjust the X-ray imaging apparatus A from the side of the subject B and adjust the operation panel 60. It is possible to confirm the photographed image. As a result, the operator can easily position the subject B's head.

  Next, the subject B is guided to the jaw positioning unit 50 of the X-ray imaging apparatus A, and the head of the subject B is positioned. At this time, the surgeon can adjust the X-ray imaging apparatus A while looking directly at the side face of the subject B by positioning the X-ray detector 3 on the left side of the subject B where the X-ray detector 3 does not exist. The operator adjusts the height of the chin rest 55 so that the jaw of the subject B is placed on the chin rest 55, and causes the subject B to bite the bite block 58. In this state, the operator instructs the subject B to look at the line-of-sight derivative 70.

  The operator selects the front image of the subject B (the first image 33a taken by the first camera 33) displayed on the operation panel 60 and the side image of the subject B (the second image 34a taken by the second camera 34) Finely adjust the height of the chin rest 55 while referring to).

  An example of the first image 33a displayed on the operation panel 60 is shown in FIG. 7, and an example of the second image 34a is shown in FIG. As shown in FIG. 7, when the occlusal site where the upper and lower teeth of the subject B engage in the first image 33 a overlaps the occlusal line D and appears in a straight line, the jaw of the subject B performs X-ray imaging. It can be determined that the proper posture, that is, the Frankfurter plane F of the subject B is parallel to the horizontal plane H shown in FIG. On the other hand, as shown in FIG. 8, the index line of the Frankfurt plane F and the index line of the occlusal plane G are configured to be superimposed on the second image 34a which is a side image. If the occlusal region is rectilinear, the index line of the Frankfurter plane F passing near the ear of the subject B is superimposed and displayed parallel to the horizontal plane H, and the horizontal plane H passing the occlusal part of the subject B is used as a reference The index line of the occlusal plane G which inclines forward and downward of the subject B is superimposed and displayed. The operator can easily position the head of the subject B by referring to the occlusal line D and the respective index lines of the Frankfurter plane F and the occlusal plane G in the first image 33a and the second image 34a.

  After confirming that the position and posture of the jaw of the subject B are correct based on the first image 33a and the second image 34a and the direct view of the subject B, the side of the subject B is fixed.

  When the head position of the subject B is completed, camera scout designation for X-ray imaging is performed using the first camera 33 and the second camera 34. As shown in FIG. 7, the first image 33 a is configured to be able to display a rectangular index line E for designating an imaging region. The size and shape of the area specified by the index line E can be changed as appropriate. As shown in FIG. 8, the index line J similar to the first image 33 a is configured to be displayable also in the second image 34 a.

  In the case of panoramic tomography, the midline position is designated by the index line E of the first image 33a shown in FIG. 7, and the canine tooth position is designated by the index line J of the second image 34a shown in FIG. In the case of CT tomography, the imaging region in the lateral direction of the face is designated by the index line E of the first image 33a shown in FIG. 7, and the index line J of the second image 34a shown in FIG. Designate the shooting area in the front and back direction. When the control unit 80 receives designation of the imaging region from the operation panel 60, the control unit 80 transmits control signals to the X-ray generation unit 2, the X-ray detection unit 3, and the swing arm 10. As a result, the X-ray generation unit 2 and the X-ray detection unit 3 move to a position where the designated imaging area can be imaged, and the X-ray irradiation area is adjusted in the X-ray generation unit 2 At 3, the X-ray detection area is adjusted. Thereafter, panoramic tomography or CT tomography is started.

[Another embodiment]
(1) In the above embodiment, the first camera 33 is provided on the camera support 35 attached to the elevating body 32 of the support 30. However, as shown in FIG. You may attach to the stay 52a extended from the main-body part 52 of the positioning part 50. FIG. Although not shown, the first camera 33 may be attached to the support frame 51 of the jaw positioning unit 50 via a bracket 51 a or the like.

(2) In the above embodiment, the jaw positioning unit 50 is configured to have the chin rest 55 and the bite block 58 provided on the chin rest 55. However, as shown in FIG. Alternatively, the cutting tool block 58 may be extended from the main body 52 or the like.

(3) Although the second camera 34 is provided in the X-ray generation unit 2 of the swing arm 10 in the above embodiment, the second camera 34 may be provided in the X-ray detection unit 3.

(4) Among the X-ray generation unit 2 and the X-ray detection unit 3, one of the X-ray generation unit 2 and the X-ray detection unit 3 that does not have the second camera 34 can be retracted from the position opposite to the other one having the second camera 34 It is not limited to the embodiment. For example, one (X-ray generation unit 2 or X-ray detection unit 3) that does not have the second camera 34 may be configured to be removable from the swing arm 10. By removing one of the swing arms 10 that does not have the second camera 34 (X-ray generation unit 2 or X-ray detection unit 3), one that does not have the second camera 34 can be retracted from the oppositely disposed position. During X-ray imaging, one (X-ray generation unit 2 or X-ray detection unit 3) which does not have the second camera 34 is attached to the swing arm 10 again. In addition, one (the X-ray generation unit 2 or the X-ray detection unit 3) without the second camera 34 may be configured to be movable toward the upper side of the swing arm 10.

(5) In the above embodiment, the line-of-sight derivative 70 is arranged on the elevating body 32 of the support 30. However, the line-of-sight derivative 70 is perpendicular to the horizontal plane H from the optical axis C of the first camera 33 It may be 60 to 80 mm above and on an imaginary parallel line K parallel to the optical axis C, and may be disposed on another member. For example, a member (not shown) for arranging the line-of-sight derivative 70 may be attached upward with respect to the jaw positioning portion 50 (support frame 51, main body 52, chin rest 55, etc.) or downward with respect to the arm support 20 It may be installed towards the

(6) A plurality of visual line derivatives 70 may be provided in the vertical direction of the elevating body 32. FIG. 10 shows an example in which the line-of-sight derivative 71 is constituted by three seal bodies 71a, 71b, 71c. For example, the plurality of seal bodies 71a to 71c may be separately provided with cover bodies 75a to 75c and configured to be switchable between the display state and the non-display state. As shown in FIG. 11, the line-of-sight derivative 72 may be positionally changeable in the vertical direction of the elevating body 32. Further, as shown in FIG. 12, the line-of-sight derivative 73 may be configured by a plurality of light emitters 73a, 73b, 73c, and any one of the light emitters (for example, 73b) may be lighted.

  The present invention can be widely used for X-ray imaging apparatuses for the head.

2: X-ray generator 3: X-ray detector 10: swivel arm 20: arm support 30: post 32: elevator 33: first camera 33a: first image 34: second camera 34a: second image 35 : Camera support 40: Base 50: Jaw positioning part 51: Support frame 53: Head fixing part 55: Chin rest 60: Operation panel (monitor part)
70, 71, 72, 73: Line-of-sight derivative 80: Controller A: X-ray imaging apparatus B: subject C: optical axis F: index line (Frankfurt plane)
G: Index line (occlusal plane)
K: virtual parallel line P: rotation axis

Claims (6)

A pivoting arm comprising an X-ray generation unit and an X-ray detection unit capable of opposing arrangement;
An arm support which pivotally supports the pivot arm;
A support for supporting the arm support so as to be movable up and down;
A jaw positioning unit supported so as to be able to move up and down on the support unit and supporting a jaw of the subject;
A first camera provided in any one of the post and the jaw positioning unit and capable of photographing the jaw of the subject supported by the jaw positioning unit;
A second camera provided in any one of the X-ray generation unit and the X-ray detection unit and capable of imaging the jaw of the subject supported by the jaw positioning unit;
And a monitor unit disposed in the vicinity of the jaw positioning unit and configured to be capable of displaying a photographed image of the first camera and the second camera.
A dental X-ray which is configured to be retractable from a position where one of the X-ray generation unit and the X-ray detection unit that does not have the second camera is opposed to the other one having the second camera. Shooting device.   Of the X-ray generation unit and the X-ray detection unit, one of the X-ray generation unit and the X-ray detection unit does not have the second camera, independently from the position oppositely disposed to the other having the second camera The dental X-ray imaging apparatus according to claim 1, wherein the dental X-ray imaging apparatus retracts by moving.   The dental X-ray imaging apparatus according to claim 1 or 2, wherein the front of the jaw is photographed by the first camera and the side of the jaw is photographed by the second camera. It further comprises a control unit that controls the display by the monitor unit,
The dental X-ray imaging apparatus according to any one of claims 1 to 3, wherein the monitor unit is removable and configured to be communicable with the control unit even in a detached state.   The X-ray imaging area is designated in at least one of the first image captured by the first camera and the second image captured by the second camera displayed on the monitor unit. The dental X-ray imaging apparatus according to any one of claims 1 to 4, wherein the dental X-ray imaging apparatus is configured to pivot to a position that enables the imaging area to be imaged. A pivoting arm comprising an X-ray generation unit and an X-ray detection unit capable of opposing arrangement;
An arm support which pivotally supports the pivot arm;
A support for supporting the arm support so as to be movable up and down;
A jaw positioning unit supported so as to be able to move up and down on the support unit and supporting a jaw of the subject;
A first camera provided in any one of the post and the jaw positioning unit and capable of photographing the jaw of the subject supported by the jaw positioning unit;
A second camera provided in any one of the X-ray generation unit and the X-ray detection unit and capable of imaging the jaw of the subject supported by the jaw positioning unit;
A dental X-ray which is configured to be retractable from a position where one of the X-ray generation unit and the X-ray detection unit that does not have the second camera is opposed to the other one having the second camera. Shooting device.

Images