CN111803119B - Tooth root tip piece projector based on angular line and working method - Google Patents
Tooth root tip piece projector based on angular line and working method Download PDFInfo
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- CN111803119B CN111803119B CN202010678915.3A CN202010678915A CN111803119B CN 111803119 B CN111803119 B CN 111803119B CN 202010678915 A CN202010678915 A CN 202010678915A CN 111803119 B CN111803119 B CN 111803119B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 210000000214 mouth Anatomy 0.000 claims abstract description 20
- 210000004746 tooth root Anatomy 0.000 claims description 19
- 238000003384 imaging method Methods 0.000 claims description 10
- 238000004088 simulation Methods 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 claims description 6
- 210000003128 head Anatomy 0.000 claims description 4
- 230000005855 radiation Effects 0.000 abstract description 3
- 210000004872 soft tissue Anatomy 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 210000003254 palate Anatomy 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
- A61B6/512—Intraoral means
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- Optics & Photonics (AREA)
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- Biophysics (AREA)
- High Energy & Nuclear Physics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Veterinary Medicine (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a tooth root tip projector based on a parting line and a working method thereof, wherein the tooth root tip projector comprises a clamping groove plate arranged on the inner side of a tooth and an outer horizontal rod arranged on the outer side of an oral cavity when in use, the clamping groove plate and the outer horizontal rod are parallel and synchronously linked, so that the inclination angles of the clamping groove plate and the outer horizontal rod are always the same with the horizontal plane, the angle relation between a long axis of the tooth and a film is accurately reproduced outside the oral cavity by utilizing a parallelogram rule, namely, the position relation between the film which cannot be directly seen in the oral cavity and the tooth to be shot is projected to the angle relation between the outer horizontal rod which can be directly observed and adjusted outside and a vertical line, and the projecting direction of X-rays is conveniently and rapidly and accurately adjusted to be vertically aligned with the parting line between the film and the tooth to be shot according to the standard requirements when the tooth is shot, so as to obtain the tooth image with the same length as the tooth to be shot. The X-ray treatment device is simple and reliable in structure, convenient to operate and capable of reducing reworking possibility, and accordingly exposure of a patient to X-ray radiation is reduced.
Description
Technical Field
The invention relates to the technical field of oral and maxillofacial images, in particular to a tooth root tip projector based on angular lines and a working method.
Background
In dental diagnosis and treatment, an X-ray dental film machine is a common device. X-ray dental apparatus are generally constructed of an X-ray generating bulb fitted with a cylindrical mask tube. The X-ray emitted by the bulb tube irradiates the face of a patient in a conical shape or a cylindrical shape from the wire shielding tube, and the irradiation field is smaller as the bulb tube is closer; the farther the bulb is, the larger the irradiation field. When in clinical use, a doctor places a film (an image imaging plate) on the inner surface of teeth of a patient in the oral cavity of the patient, and then adjusts the direction angle of the wire shielding cylinder, so that the outlet of the wire shielding cylinder is aligned with the tooth surface to be photographed, and the central line of the wire shielding cylinder is vertically aligned with the central position of the film, thereby preventing deformation of photographed tooth images and ensuring that a projection field covers all the tooth surfaces to be photographed.
In the X-ray root tip examination of the oromaxillofacial region, two general techniques are currently used: angle line projection technology and parallel projection technology.
1. The parallel projection technique of root tip slice:
the root tip parallel projection technique is also called right angle technique, long shielding wire tube technique or long focal length parallel projection technique. The basic projection principle is that the X-ray film is placed parallel to the tooth long axis, and the X-ray central line is perpendicular to both the tooth long axis and the film during projection. The advantage of such an image is that in theory the deformation distortion of the dental image and the dental is small, and when the film is placed, the film has to be moved slightly away from the target tooth in order to ensure that the film is parallel to the long axis of the tooth. And simultaneously, high voltage is adopted and a quick film is used, so that the exposure time is reduced, and the exposure quantity is reduced. However, this method is often used in experimental irradiation, and is an irradiation method which is not suitable for clinical use, and the irradiation requires necessary auxiliary tools. The time consuming and long film positioning requires a large intraoral space, and in most cases, the film cannot be formed in the intraoral space even due to the inclination of teeth, the morphology of surrounding soft tissues (tongue, bottom of mouth and palate) and bone tissues (alveolar bone, palate arch), thickness factors and the size of the oral cavity volume, and the film often fails due to the large matching difficulty of patients. Theoretically possible, but only of partial value in actual clinical work.
2. The root tip piece angle line projection technology comprises the following steps:
the angle line projection technology is the most commonly used projection technology in clinic, an angle bisector is made on the included angle between the teeth and the film in a vertical plane, the X-ray is vertically opposite to the angle bisector, and the image of the teeth is projected onto the film, so that the teeth image on the film is completely symmetrical and consistent with the photographed teeth in equal length relationship because of the angle division in the angle bisector.
In the technology of root tip radiography, which is issued by the national health and wellness Committee of the people's republic of China, the health industry standard (WS/T608-2018) in the oral and maxillofacial X-ray examination operation Specification (2018-05-10, 2018-11-01, for implementation), an angular bisector, i.e., a bisector, of an angle between an X-ray center line and a long axis of a tooth to be examined and an image receiver is required to be perpendicular.
Because the X-ray central line is not perpendicular to the tooth long axis or the film which exists in practice during projection, the X-ray central line is perpendicular to an imaginary angular bisector, and the direction of the X-ray central line is adjusted according to the angular bisector. In practical operation, how to establish the specific spatial position of the angular bisector is ambiguous and cannot be measured, and only can be estimated empirically, so that the accuracy is usually insufficient, and the photographed tooth image is often distorted and deformed.
In textbooks and national standards, the operation specifications of the projection direction and the fixed-point positioning projection of the X-ray shielding wire cylinder refer to the body surface marks of the facial soft tissues of a patient. But it is apparent that there are too many points of doubt and uncertainties in the location of the photographed teeth using external body surface markers. The term "X-ray centerline" in the standard should be as parallel as possible to the tangent of the adjacent surface of the tooth under examination, where the term "as possible" is used for confusion and inaccuracy.
Therefore, the angle line dividing technology is theoretically established, but in actual operation, because the film and the teeth are all positioned in the oral cavity, the relationship of the included angles between the film and the teeth is invisible and blurred. Therefore, no clear parameter is defined how the angle is defined and how the angle is measured. In these prescribed operation specifications, the object of X-ray projection is a hard tissue tooth, but the projection direction and projection angle used for positioning the tooth position are set in such a way that the X-ray tube is aligned with a soft tissue body surface sign and a virtual line on the outer side of the tooth to estimate and predict the spatial position of the tooth, and the spatial position of the tooth is separated from the tooth, so that the projection direction and projection angle cannot be accurately positioned in actual clinical operation.
Moreover, the technology in the specification does not refine the tooth space state, the specific position relation of the film, the specific position and angle relation of the X-ray projection direction and the like. In photographing, many factors such as different angles of projection, different directions of projection, even different technicians, and variations in the shape and spatial position of the teeth of the patient may cause the same teeth to have very different imaging shapes after projection. And even the same body surface mark, the tooth space position of each person is greatly different, so that the technology clearly brings great error and uncertainty to clinical images. Therefore, the technology of vertical angle bisector is adopted to shoot the root tip of the tooth, only the possibility of theoretical accuracy exists, and no more practical value exists, because the randomness and uncertainty of projection cannot truly show the essence and connotation of the angle bisector technology.
I.e. in practice, the angle of the bisector is what is, more, based on the experience of the clinical operator, because the angle between the tooth and the film is inside the tooth of the mouth, which is not measurable nor predictable. Therefore, although the angle line dividing technique used in the clinic at present is completely accurate in concept, the angle line dividing technique obtained by subjective judgment is used as an objective index for adjusting the direction of the X-ray shielding tube, and great deviation exists in clinical practice and execution. That is, clinical practice is not standardized, and theoretical stringency is not sufficient.
Accordingly, there is a need for further improvements and enhancements in the art.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a dental root tip projector based on angular lines and a working method thereof, which can quickly and clearly locate the direction of X-ray projection when a dental film machine is used to image the teeth of a patient.
In order to achieve the above object, the present invention provides a tooth root tip projector based on angular lines, comprising: a clamping groove plate arranged at the inner side of the teeth and an outer horizontal rod arranged at the outer part of the oral cavity; the clamping groove plate is parallel to the outer horizontal rod and synchronously linked, can rotate along a horizontal axis, and keeps the same inclination angle with the horizontal plane; the clamping groove plate is provided with a clamping groove for inserting a film, and the clamping groove is horizontally parallel to teeth to be photographed.
Preferably, the clamping groove plate and the outer horizontal rod are respectively and movably connected with at least one occlusion horizontal rod and at least one linkage rod; the engagement horizontal bar and the linkage bar are parallel but at different levels.
More preferably, the engagement horizontal bar is provided as two parallel separated pieces sandwiching a fixing plate in a horizontal direction.
More preferably, the device further comprises at least one elastic knob for fixing the inclination angle of the outer horizontal rod to the occlusion horizontal rod.
More preferably, the device further comprises an angle meter connected between the occlusion horizontal rod and the outer horizontal rod, and the angle meter is used for quantitatively indicating the angle between the outer horizontal rod and the occlusion horizontal rod.
Preferably, the visual simulation board is vertically connected to the outer horizontal rod, and the visual simulation board is parallel to the clamping groove.
Preferably, the device further comprises an imaging plate connected to the clamping groove plate along the up-down direction, and the imaging plate is parallel to the transverse direction of the clamping groove.
Preferably, the device further comprises an angle line projection indicating rod perpendicular to the outer horizontal rod, wherein the fixed end of the angle line projection indicating rod is rotatably connected with the outer horizontal rod, and an indicator is vertically fixed at the free end of the angle line projection indicating rod and is vertical to the outer horizontal rod.
Preferably, the device further comprises a vertical indicating rod perpendicular to the horizontal plane, and the angle dividing line projection indicating rod is kept on an included angle bisector of the vertical indicating rod and the outer horizontal rod in the vertical direction after being adjusted.
The invention also discloses a working method of the tooth root tip piece projector based on the angle dividing line, which comprises the following steps:
a. inserting a film into the clamping groove;
b. adjusting the posture of the head of the patient so that the long axis of the teeth to be shot is vertical to the horizontal plane;
c. placing the clamping groove plate close to the inner side of the teeth to be photographed, closing the upper lip and the lower lip, and fixing the clamping groove plate;
d. and adjusting the projection direction of the X-ray tube to be perpendicular to the bisector of the included angle between the horizontal rod and the vertical line at the outer side.
The tooth root tip projector based on the angle dividing line and the working method thereof comprise a clamping groove plate arranged on the inner side of a tooth and an outer horizontal rod arranged on the outer side of an oral cavity in use, and the clamping groove plate and the outer horizontal rod are arranged in parallel and synchronously linked, so that the inclination angles of the clamping groove plate and the outer horizontal rod and a horizontal plane are always kept the same, the angle relation between a long axis of the tooth and a film is accurately reproduced in an external visualization mode of the oral cavity by utilizing a parallelogram rule, namely, the position relation between the film which cannot be directly seen in the oral cavity and the tooth to be shot is projected to the angle relation between the outer horizontal rod and a vertical line which can be directly observed and adjusted in the external side, when the tooth is shot by using a dental film machine, the angle dividing line between the film and the tooth to be shot is quickly and accurately adjusted according to the standard requirement, and the tooth image with the same length as the tooth to be shot is obtained. The technical scheme of the invention has the advantages of simple and reliable structure, convenient operation and reduced reworking possibility, thereby reducing the exposure of patients to X-ray radiation.
Drawings
FIG. 1 is a schematic view of the overall structure of a dental root tip projector based on angular lines according to the present invention;
FIG. 2 is a schematic diagram of the state of linkage of the tooth root tip projector based on the dividing line of the present invention;
FIG. 3 is an exploded view of the structure of the dental root tip projector based on the angular line according to the present invention;
FIG. 4 is a flowchart of the operation of the present invention for a line-based dental root tip projector;
in the figure: 1-imaging plate, 2-slot plate, 3-linkage rod, 4-interlock department, 5-interlock horizon bar, 6-angle appearance, 7-elasticity knob, 8-outside horizon bar, 9-visual simulation board, 10-fixed plate, 11-minute angle line throw indication pole, 12-indicator.
Detailed Description
The following description of the preferred embodiments of the present invention refers to the accompanying drawings, which make the technical contents thereof more clear and easy to understand. The present invention may be embodied in many different forms of embodiments and the scope of the present invention is not limited to only the embodiments described herein.
In the drawings, like structural elements are referred to by like reference numerals and components having similar structure or function are referred to by like reference numerals. The dimensions and thickness of each component shown in the drawings are arbitrarily shown, and the present invention is not limited to the dimensions and thickness of each component. The thickness of the components is exaggerated in some places in the drawings for clarity of illustration.
As shown in fig. 1, the dental root tip projector based on the dividing line of the present invention has a basic structure including a slot plate 2 which is placed inside the teeth in use, and an outer horizontal bar 8 which is placed outside the oral cavity. The clamping groove plate 2 and the outer horizontal rod 8 are parallel to each other and are synchronously linked, namely, the clamping groove plate and the outer horizontal rod can rotate along a horizontal axis, but the inclination angles of the clamping groove plate and the outer horizontal rod are kept the same all the time. Wherein the clamping groove plate 2 is used for inserting the film, so that the clamping groove for inserting the film is formed on the clamping groove, and when the clamping groove is placed in the entrance, the clamping groove is parallel to the teeth to be photographed in the transverse direction, so that the film inserted on the clamping groove is ensured to be parallel to the teeth to be photographed in the transverse direction. In a preferred embodiment, an imaging plate 1 is further fixed to the card slot plate 2, and the imaging plate 1 is held parallel to the transverse direction of the card slot. When placing the film, the film can rely on between the inboard of imaging plate 1 and waiting to shoot the tooth, prevents before shooting or in-process of shooting, unexpected emptys.
Similarly, as shown in fig. 2, on the outer horizontal bar 8, a visual simulation board 9 is also vertically connected, and the visual simulation board 9 is also kept parallel to the outer horizontal bar 8. A visual simulation board 9 is arranged to further enlarge the included angle between the display film and the teeth.
In the vertical direction, the vertical angle of the clamping groove plate 2 can be adjusted according to the actual condition of the oral cavity of a patient, so that the inclination angle of the film is changed, as shown in fig. 2.
Specifically, first, a film is inserted into the card slot, and the posture of the head of the patient is adjusted so that the long axis of the tooth to be photographed is perpendicular to the horizontal plane. Then the clamping groove plate 2 is placed in the oral cavity of a patient and is closely placed on the inner side of the teeth to be shot to form an included angle. The patient closes the upper and lower lips so that the neck plate 2 remains stationary. Because of the linkage, the included angle will be reflected in real time as the included angle of the outer horizontal bar 8 with the vertical line. At this time, since the angle between the outer horizontal bar 8 and the vertical line is clearly visible outside the patient's mouth, its angle bisector is easily found. Then the projection direction of the X-ray tube, namely the outlet direction of the wire shielding tube, is adjusted to be perpendicular to the bisector of the included angle between the outer horizontal rod 8 and the vertical line, so that the photographed image obtained on the film and the teeth to be photographed are ensured to be completely equal in length.
The synchronous linkage of the clamping groove plate 2 and the outer horizontal rod 8 can be realized by a parallelogram method. In one embodiment, as shown in fig. 2, the clamping groove plate 2 and the outer horizontal rod 8 are respectively movably connected with at least one engagement horizontal rod 5 and at least one linkage rod 3. The engagement horizontal bar 5 and the linkage bar 3 are parallel but at different levels. That is, in one vertical plane, the engagement horizontal bar 5, the outer horizontal bar 8, the link bar 3, and the click plate 2 are sequentially connected to form a parallelogram. Therefore, the included angle formed by the outer horizontal rod 8 and the clamping groove plate 2 to the horizontal plane can be changed by pushing or pulling out the linkage rod 3, namely, the included angle between the film and the teeth to be photographed is adjusted. In a preferred embodiment, the engagement horizontal bar 5 is provided as two parallel spaced apart bars, connecting the two ends of the clamping groove plate 2 and the outer horizontal bar 8, respectively, preferably vertically. Furthermore, preferably, in order to increase the stability of the whole structure, a fixing plate 10 in a horizontal direction is further clamped between the two occlusion horizontal rods 5, and the lips of the patient are closed at the occlusions 4 on the fixing plate 10.
In a more preferred embodiment, as shown in the exploded view of fig. 3, an elastic knob 7 is provided at one end of the outer horizontal bar 8, and after tightening, the inclination angle between the outer horizontal bar 8 and the engagement horizontal bar 5 is fixed.
In order to further define the angle line, as shown in fig. 3, an angle line projection indication rod 11 may be further provided, perpendicular to the outer horizontal rod 8, where the fixed end of the angle line projection indication rod 11 is rotatably connected to the outer horizontal rod 8, and the free end of the angle line projection indication rod 11 is vertically fixed with an indication mark 12, where the indication mark 12 is also perpendicular to the outer horizontal rod 8.
When the clamping groove plate 2 is used, after the clamping groove plate 2 is placed in the inlet cavity and the angle is adjusted, the included angle between the outer horizontal rod 8 and the vertical line is also fixed. At this time, the angular line projection indication rod 11 can be rotated to the angular bisector formed by the outer horizontal rod 8 and the vertical direction, so as to clearly indicate the angular line. And the shielding cylinder is adjusted to face the direction pointed by the indicator 12.
As shown in fig. 2, an angle gauge 6 for quantitatively indicating the angle between the outside horizontal bar 8 and the engagement horizontal bar 5 is provided between the engagement horizontal bar 5 and the outside horizontal bar 8. In another embodiment, a vertical indication rod is further provided, and the vertical indication rod keeps a vertical horizontal plane forever, so that the angle between the outer horizontal rod 8 and the vertical line can be clearly displayed, the angle dividing line is conveniently found, and the angle dividing line projection indication rod 11 is located on the bisector of the included angle between the vertical indication rod and the outer horizontal rod 8 in the vertical direction after being adjusted.
The working method of the tooth root tip projector based on the dividing line, as shown in fig. 4, comprises the following steps:
a. inserting a film into the clamping groove;
b. adjusting the posture of the head of the patient so that the long axis of the teeth to be shot is vertical to the horizontal plane;
c. placing the clamping groove plate 2 close to the inner side of the teeth to be photographed, closing the upper lip and the lower lip, and fixing the clamping groove plate 2;
d. and adjusting the projection direction of the X-ray tube to be perpendicular to the bisector of the included angle between the horizontal rod and the vertical line at the outer side.
In summary, the tooth root tip projector based on the angle dividing line and the working method thereof comprise the clamping groove plate 2 arranged on the inner side of a tooth and the outer horizontal rod 8 arranged on the outer side of an oral cavity in use, and the clamping groove plate 2 and the outer horizontal rod 8 are arranged in parallel and synchronously linked, so that the inclination angles of the clamping groove plate 2 and the outer horizontal rod 8 and a horizontal plane are always kept the same, and the angle relation between a long axis of the tooth and a film is accurately reproduced in the outer side of the oral cavity by utilizing a parallelogram rule, namely, the position relation between the film which cannot be directly seen in the oral cavity and the tooth to be shot is projected to the angle relation between the outer horizontal rod 8 which can be directly observed and adjusted outside and the vertical line. The technical scheme of the invention has the advantages of simple and reliable structure, convenient operation and reduced reworking possibility, thereby reducing the exposure of patients to X-ray radiation.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention without requiring creative effort by one of ordinary skill in the art. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (6)
1. Tooth root tip piece projector based on minute angle line, which is characterized by comprising:
a clamping groove plate arranged at the inner side of the teeth and an outer horizontal rod arranged at the outer part of the oral cavity;
the clamping groove plate is parallel to the outer horizontal rod and synchronously linked with the outer horizontal rod, can rotate along a horizontal axis, and keeps the same inclination angle with a horizontal plane; the clamping groove plate and the outer horizontal rod are respectively and movably connected with at least one occlusion horizontal rod and at least one linkage rod; the occlusion horizontal rod and the linkage rod are parallel but located at different horizontal heights; in a vertical plane, the engagement horizontal rod, the outer horizontal rod, the linkage rod and the clamping groove plate are sequentially connected to form a parallelogram, so that the included angle formed by the outer horizontal rod and the clamping groove plate to the horizontal plane can be changed by pushing in or pulling out the linkage rod;
the clamping groove plate is provided with a clamping groove for inserting a film, and the clamping groove is horizontally parallel to teeth to be photographed;
at least one elastic knob for fixing the inclination angle of the outer horizontal rod to the occlusion horizontal rod;
the angle meter is connected between the occlusion horizontal rod and the outer horizontal rod and used for quantitatively indicating the angle between the outer horizontal rod and the occlusion horizontal rod;
and the visual simulation plate is vertically connected to the outer horizontal rod and is parallel to the clamping groove.
2. The dental root tip projector according to claim 1, wherein the occlusion horizontal bar is provided as two parallel spaced apart holding plates which sandwich a horizontal direction.
3. The dental root tip projector according to any one of claims 1 to 2, further comprising an imaging plate attached to the card slot plate in an up-down direction, the imaging plate being parallel to a lateral direction of the card slot.
4. The dental root tip projector according to any one of claims 1 to 2, further comprising a minute angle line projection indicating rod perpendicular to the outer horizontal rod, wherein a fixed end of the minute angle line projection indicating rod is rotatably connected to the outer horizontal rod, and an indicator is vertically fixed to a free end of the minute angle line projection indicating rod, and is vertical to the outer horizontal rod.
5. The dental root tip projector according to claim 4, further comprising a vertical indicator bar perpendicular to the horizontal plane, wherein the angular line projector indicator bar remains on a bisector of an angle between the vertical indicator bar and the outer horizontal bar in the vertical direction after adjustment.
6. A method of operating a dental root tip projector according to any one of claims 1 to 5, comprising the steps of:
a. inserting the film into a clamping groove formed in the clamping groove plate;
b. adjusting the posture of the head of the patient so that the long axis of the teeth to be shot is vertical to the horizontal plane;
c. the clamping groove plate is closely placed on the inner side of the teeth to be shot, the upper lip and the lower lip are closed, and the clamping groove plate is fixed;
d. and adjusting the projection direction of the X-ray tube to be perpendicular to the bisector of the included angle between the horizontal rod and the vertical line at the outer side.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010678915.3A CN111803119B (en) | 2020-07-15 | 2020-07-15 | Tooth root tip piece projector based on angular line and working method |
| PCT/CN2020/125742 WO2022011885A1 (en) | 2020-07-15 | 2020-11-02 | Dental periapical film radiographic device based on bisecting angle, and method for using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010678915.3A CN111803119B (en) | 2020-07-15 | 2020-07-15 | Tooth root tip piece projector based on angular line and working method |
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| Publication Number | Publication Date |
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| CN111803119A CN111803119A (en) | 2020-10-23 |
| CN111803119B true CN111803119B (en) | 2024-01-19 |
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| CN202010678915.3A Active CN111803119B (en) | 2020-07-15 | 2020-07-15 | Tooth root tip piece projector based on angular line and working method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022011885A1 (en) * | 2020-07-15 | 2022-01-20 | 韩方凯 | Dental periapical film radiographic device based on bisecting angle, and method for using same |
| WO2022241668A1 (en) * | 2021-05-19 | 2022-11-24 | 韩方凯 | Angle positioning device for dental periapical film projection, and usage method |
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| CN102325500A (en) * | 2009-02-27 | 2012-01-18 | 您可试股份有限公司 | Intraoral photography aids |
| CN102395321A (en) * | 2009-04-28 | 2012-03-28 | 株式会社Wes | Acquisition tool with special sensor holder for holding CCD sensors for dental X-ray imaging |
| CN108030506A (en) * | 2017-12-04 | 2018-05-15 | 南京嘉威医疗器械有限责任公司 | Piece device is held in a kind of dental piece photography |
| CN213551883U (en) * | 2020-07-15 | 2021-06-29 | 上海市口腔病防治院 | Tooth apex piece projector based on angular line |
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| CN111803119A (en) | 2020-10-23 |
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