Digital jaw position analyzer

Abstract

The invention discloses a digital jaw position analyzer, which comprises a face arch assembly, a suborbital point assembly, a condylar axis assembly, a tracing assembly and a mandibular movement assembly, can be used as a conventional face arch, and can also be used for tracing a condylar axis and tracing a mandibular movement track to directly obtain space coordinates of each key point; the condylar axis coordinates are obtained into the same coordinate system of the face arch, so that digital jaw position analysis is achieved, jaw position analysis can be completed more quickly without a complex mandibular motion tracing instrument, and the method is used for checking whether the jaw position of an orthodontic patient is abnormal or not, preventing the possible temporomandibular joint problem and assisting an orthodontic doctor in better scheme design. And the correction result is more stable.

Description

Technical Field

[0001] The invention relates to the field of dental jaw position analysis, and in particular to a digital jaw position analyzer. Background Art

[0002] Jaw position analysis usually requires the use of a face bow to obtain the relationship between the condyle and the maxillary tooth model (the process of using the face bow's matching universal joint and occlusal fork to transfer the spatial position relationship between the condyle and the maxillary tooth model to the jaw frame is referred to as face bow transfer). The face bow consists of two left and right ear balls embedded in the patient's external auditory canal, and another nose pad is fixed on the bridge of the nose. Three points are used to stabilize the entire face bow to prevent shaking. However, when biting, the condyle moves backward and hits the anterior wall of the external auditory canal, causing the ear ball placed in the external auditory canal to shake, causing the entire face bow to shake. Therefore, it is impossible to obtain the true condylar axis position while obtaining the spatial relationship between the condyle and the maxillary tooth model. In other words, the condylar axis position obtained by the mandibular motion recorder and the maxillary tooth model position obtained by the face bow are separate and cannot be completed on the same instrument.

[0003] Since the condyle is inside the skull, the spatial position cannot be directly obtained. Therefore, the conventional method is to replace the condyle with the otic ball of the face bow, but this causes errors. Therefore, there is a special mandibular movement recorder. A small plate is placed in the anterior area of ​​the tragus. After the mandibular teeth fix the occlusal fork, the crossbar connected to the occlusal fork and the pointer draw the movement trajectory of the condyle on the small plate, which can record the rotation center of the condylar axis. Since the distance between the external auditory canal and the condyle is very close, only 5-10mm, there is currently no device that can combine the two. Therefore, there is a need for an instrument that can be used as a conventional face bow and can also record the condylar axis to facilitate clinical operation.

[0004] CN 117898825 discloses a method for solving the condylar rotation axis based on the mandibular motion trajectory, but this method requires taking a full head CT scan, segmenting the mandible, and then aligning the segmented mandibular teeth with the scanned tooth model. This process is time-consuming and laborious. At the same time, the mandibular tooth model segmented from the CT image has low accuracy and there is a large error in the alignment with the scanned tooth model. CN 113040952 and US2017037110W disclose a virtual model of joint motion obtained by intraoral scanning, which calculates the condylar axis by scanning different occlusal states. However, this method requires intraoral scanning of several or even dozens of occlusal positions, because an intraoral scan takes 3-5 minutes, and it is difficult for patients to persist in doing so many occlusal movements. The condylar axis calculated in this way also has a very large error and is not the real condylar axis position. This will delay the doctor's clinical time and the patient's experience is also very poor.

[0005] In clinic, it usually takes only 5-10 minutes to perform facebow transfer on patients, but it takes more than an hour to fix the plaster model to the jaw frame, which makes it difficult for clinicians to perform jaw position analysis. Therefore, an instrument is needed that can simultaneously complete mandibular movement tracing, condylar axis tracing, and facebow transfer, and can directly obtain the condylar axis coordinate axis, infraorbital point coordinate value, and condylar width value, so that jaw position analysis can be completed more quickly. Summary of the invention

[0006] The advantage of the present invention is that it can be used as a conventional face bow, and can also record the condylar axis and the mandibular movement trajectory. The spatial coordinates of each key point can be directly obtained, and the condylar axis coordinates can be acquired into the same coordinate system of the face bow to realize digital jaw position analysis. It does not require a complicated mandibular movement recorder, and the jaw position analysis can be completed more quickly. It integrates multiple functions in one, and the doctor does not need to purchase two sets of devices. The mandibular position can be accurately analyzed, which saves costs, greatly simplifies clinical work, and is used to check whether the mandibular position of orthodontic patients is abnormal.

[0007] To achieve the above object, the present invention provides a digital jaw position analyzer, comprising:

[0008] Face bow assembly, used for face bow installation and width adjustment;

[0009] Infraorbital point component, used to measure the spatial coordinates of the infraorbital point;

[0010] Condylar axis component, used to measure the spatial coordinates of the condylar axis;

[0011] A recording component for recording the condylar axis and condylar motion;

[0012] The mandibular motion component is used to provide the power for opening and closing the mandible during condylar axis tracing and condylar motion tracing.

[0013] In one embodiment, a face bow assembly includes: a fixed body, a left horizontal rod, a right horizontal rod, a bow portion, a universal joint fixing hole, an ear ball, a condyle axis pointer and a nose pad portion. The left and right horizontal rods are located on the left and right sides of the fixed body, are parallel to each other and have a length adjustment component. The two ends of the left and right bow portions are respectively connected to the ear balls and the left and right horizontal rods. The nose pad portion is located at the upper end of the fixed body, and the distance between the center points of the bilateral ear balls corresponds to the value indicated on the condyle width scale.

[0014] Furthermore, the length adjustment component has scale values, and the scale values ​​correspond to the telescopic lengths of the left and right horizontal rods. The lengths of the left and right horizontal rods of the face bow are shortened to facilitate use by children. Alternatively, the face bow can be fixed without adjustment, which is a conventional face bow.

[0015] Furthermore, the ear ball adjustment screw on the ear ball is used to adjust the depth of the ear ball entering the external auditory canal. When the adjustment screw is fully tightened, the distance between the center points of the bilateral ear balls is consistent with the condylar width scale value of the fixed body.

[0016] Furthermore, the nose pad part includes: a nose pad, a nose pad slide bar, a vertical slider, a horizontal adjustment screw, a horizontal slider, a U-shaped groove and a vertical adjustment screw, and the sliding directions of the vertical slider, the horizontal slider and the nose pad slide bar of the nose pad part are perpendicular to each other.

[0017] In one embodiment, the infraorbital point assembly includes: an infraorbital point pointer and a pointer slider, the convex groove head of the pointer slider is embedded in the U-shaped hole of the infraorbital point pointer, and the infraorbital point pointer and the pointer slider cooperate to achieve mutually perpendicular forward and backward and horizontal sliding.

[0018] Furthermore, the plane formed by the vertex of the infraorbital point pointer in the infraorbital point assembly and the center points of the ear balls on both sides is parallel to the plane formed by the left and right horizontal bars.

[0019] In one embodiment, the condylar axis assembly includes: a condylar axis pointer, a condylar axis slide bar and a condylar axis slider, the condylar axis slide bar slides in the front-back direction, the condylar axis slider slides in the vertical direction, and the condylar axis pointer slides in the left-right direction in the condylar axis slide bar.

[0020] In one embodiment, the tracing assembly includes: a tracing board, a tracing slider, a scale plate and scale paper. The horizontal plate of the T-shaped tracing board has a U-shaped groove that matches the convex groove of the tracing slider. The tracing board slides in both the front-to-back and left-to-right directions.

[0021] In one embodiment, the mandibular movement assembly includes: a tracing pen, a tracing pen adjustment block, a silicone gasket, a rubber band, a movement rod, a movement rod adjustment seat and a fork, and the tail of the tracing pen has a groove.

[0022] Furthermore, the movement directions of the facebow component, infraorbital point component, condylar axis component, tracing component and mandibular movement component, as well as the components on the five components, are parallel or perpendicular to the long axes of the left and right horizontal rods.

[0023] In one embodiment, the digital jaw position analyzer has four usage methods as follows:

[0024] The first method of use: The face bow component is combined with the infraorbital point component and can be used as a regular face bow.

[0025] The second method of use: You can manually mark the condylar axis surface point in the anterior area of ​​the tragus, move the condylar axis pointer to that point, and you can directly read the scale value of that point. After entering it into the software, you can directly perform jaw position analysis.

[0026] The third method of use: Use the mandibular movement component to trace the position of the condylar axis on the tracing board, read the data of this point on the tracing board scale, and input the data into the software to obtain the spatial position relationship between the condylar axis and the maxillary tooth model. You can also move the condylar axis pointer to read the scale value.

[0027] The fourth method of use: Use the mandibular motion component to record the movement of the condyle, draw the condyle motion curve, read the scale value of the curve, and input it into the software to obtain a digitized condyle motion curve.

[0028] The present invention discloses a digital jaw position analyzer, comprising: a face bow component, an infraorbital point component, a condylar axis component, a tracing component and a mandibular movement component. The digital jaw position analyzer can be used as a conventional face bow, and can also trace the condylar axis and trace the mandibular movement trajectory. The spatial coordinates of various key points can be directly obtained to realize digital jaw position analysis. A complex mandibular movement tracing instrument is not required, and the jaw position analysis can be completed more quickly. The digital jaw position analyzer integrates multiple functions in one device, and doctors do not need to purchase two sets of devices. The mandibular position can be accurately analyzed, which saves costs, greatly simplifies clinical work, and is used to check whether the mandibular position of orthodontic patients is abnormal. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 is a schematic diagram of a digital jaw position analyzer;

[0031] Figure 2 A schematic diagram of a facebow assembly on a digital jaw position analyzer;

[0032] Figure 3 A partial schematic diagram of a nose pad on a digital jaw position analyzer;

[0033] Figure 4 A schematic diagram of an infraorbital point component on a digital jaw position analyzer;

[0034] Figure 5 A schematic diagram of a condylar axis assembly on a digital jaw position analyzer;

[0035] Figure 6 A schematic diagram of a recording component on a digital jaw position analyzer;

[0036] Figure 7 A schematic diagram of another installation method of a condylar axis component of a digital jaw position analyzer;

[0037] Figure 8 A schematic diagram of a mandibular motion component on a digital jaw position analyzer;

[0038] Fig. 9 It is a partial schematic diagram of a mandibular movement component on a digital jaw position analyzer;

[0039] Fig.10 A schematic diagram of a digital jaw position analysis of a digital jaw position analyzer;

[0040] In the figure: 1-face bow assembly, 101-fixed body, 102-left horizontal rod, 103-right horizontal rod, 104-universal joint fixing hole, 105-condylar width scale, 106-length adjustment assembly, 107-arch, 108-ear ball adjustment screw, 109-ear ball, 600-nose pad, 2-infraorbital point assembly, 201-infraorbital point pointer, 202-U-shaped hole, 203-pointer slider, 204-pointer slider convex groove, 3-condylar axis assembly, 301-condylar axis pointer, 302-condylar axis slide bar, 303-condylar axis slider, 4-tracing assembly, 401-tracing board, 402-vertical board, 403-horizontal board, 404-tracing slider, 405-scale dial, 406-scale paper, 407-head back strap mounting hole, 408-head top strap mounting hole, 5-mandibular movement assembly, 501-movement rod, 502-movement rod adjustment seat, 503-fork, 504-silicone gasket, 505-rubber band, 506-tracing pen, 507-tracing pen groove, 508-tracing pen adjustment block, 509-universal joint, 510-tracing pen adjustment screw, 601-nose pad, 602-nose pad slide bar, 603-vertical slider, 604-horizontal adjustment screw, 605-horizontal slider, 606-U-shaped groove, 607-vertical adjustment screw DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0042] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] like Figure 1 As shown, a digital jaw position analyzer includes: a face bow component 1, an infraorbital point component 2, a condylar axis component 3, a tracing component 4 and a mandibular movement component 5. The face bow component is the main body of the digital jaw position analyzer, and is connected to the infraorbital point component, the condylar axis component, the tracing component and the mandibular movement component. The right side is connected to the infraorbital point component, the tracing component is located at the rear side of the infraorbital point component, the condylar axis component is located at the right side of the tracing component, and the mandibular movement component is located at the lower end of the face bow component.

[0045] like Figure 2 As shown, the face bow assembly includes: a fixed body 101, a left horizontal rod 102, a right horizontal rod 103, a universal joint fixing hole 104, a bow portion 107, an ear ball 109, a condylar axis pointer 301 and a nose pad portion 600. The left and right horizontal rods are located on the left and right sides of the fixed body, are parallel to each other and have a length adjustment component 106. The two ends of the left and right bow portions are respectively connected to the ear balls and the left and right horizontal rods. The nose pad portion is located at the upper end of the fixed body. The distance between the center points of the bilateral ear balls corresponds to the value indicated on the condylar width scale 105.

[0046] like Figure 3 As shown, the nose pad part 600 includes: a nose pad 601, a nose pad slide bar 602, a vertical slider 603, a horizontal adjustment screw 604, a horizontal slider 605, a U-shaped groove 606, and a vertical adjustment screw 607. The nose pad part is a detachable component, which works in conjunction with the face bow assembly. The sliding directions of the vertical slider, the horizontal slider and the nose pad slide bar of the nose pad part are perpendicular to each other.

[0047] Furthermore, the length adjustment component can also be fixed without adjustment, that is, a conventional face bow. The length of the horizontal rods on the left and right sides of the face bow can be shortened by the length adjustment component to facilitate children to use the face bow.

[0048] like Figure 1 As shown, the ear ball adjustment screw 108 on the ear ball can adjust the depth of the ear ball entering the external auditory canal. When the adjustment screw is fully tightened, the distance between the center points of the bilateral ear balls is consistent with the condylar width scale value of the fixed body. When the adjustment screw is retracted in the reverse direction, the ear ball can be detached from the external auditory canal to prevent the ear ball from being hit during condylar axis tracing, resulting in condylar axis tracing deviation.

[0049] like Figure 4As shown, the infraorbital point assembly includes: an infraorbital point pointer 201 and a pointer slider 203. The head of the pointer slider convex groove 204 is embedded in the U-shaped hole 202 of the pointer and slides along the U-shaped gap. The infraorbital point pointer cooperates with the pointer slider to achieve mutually perpendicular forward and backward and horizontal sliding. Such sliding ensures that the scale value of the infraorbital point can be accurately read at any time, which is convenient for inputting into the software for analysis and calculation.

[0050] Illustratively, the plane formed by the vertex of the infraorbital point pointer on the infraorbital point assembly and the center points of the ear balls on both sides is parallel to the plane formed by the left and right horizontal rods. The two planes are parallel to each other, ensuring that the movement on the mechanical structure can be converted into numerical values, and the scale values ​​can be read and entered into the software.

[0051] Furthermore, the plane formed by the vertex of the infraorbital point pointer on the infraorbital point assembly and the center points of the ear balls on both sides may not be parallel to the plane formed by the left and right horizontal rods. The advantage of parallelism is that it is convenient for calculation. If it is not parallel, the read parameters need to be input into the supporting software and calculated after spatial coordinate conversion, which increases the complexity.

[0052] like Figure 5 As shown, the condylar axis assembly includes: a condylar axis pointer 301, a condylar axis slide bar 302 and a condylar axis slider 303. The condylar axis slide bar slides in the front-to-back direction, and the condylar axis slider slides in the vertical direction. The condylar axis pointer slides left-right in the condylar axis slide bar, ensuring that the movement on the mechanical structure can be converted into a numerical value. The scale value can be read and input into the software. There are scale values ​​on the condylar axis pointer, the condylar axis slide bar and the condylar axis slider.

[0053] like Fig.10 As shown in the figure, the scale values ​​indicated by the condylar axis pointer, condylar axis slide bar and condylar axis slider are the spatial coordinates of the condylar axis surface points. The line ab connects the left condylar axis surface point a and the right condylar axis surface point b. The intersection point A of the straight line ab and the sagittal plane passing through the center point c of the left ear ball is the center point of the left condyle. The intersection point B of the straight line ab and the sagittal plane passing through the center point d of the right ear ball is the center point of the right condyle.

[0054] like Figure 6 As shown, the tracing assembly includes: a T-shaped tracing board 401, a tracing slider 404, a scale plate 405, a scale paper 406 and strap mounting holes, the strap mounting holes include a strap mounting hole 407 at the back of the head and a strap mounting hole 408 at the top of the head, which are used to fix the digital jaw position analyzer and the tightness of the patient's head. The T-shaped tracing board has a vertical plate 402 and a horizontal plate 403. The horizontal plate of the T-shaped tracing board has a U-shaped groove that matches the convex groove of the tracing slider. The tracing board slides in the front and back and left and right directions. When the left and right tracing boards slide inward, they can clamp the head to provide stability for the analyzer.

[0055] like Figure 7As shown, a new digital jaw position analyzer installs the condylar axis pointer 301 and the condylar axis slide bar 302 in the original condylar axis assembly into the tracing slider 404. Different from the original movement mode, the condylar axis pointer can move in a direction parallel or perpendicular to the long axis of the left and right horizontal rods.

[0056] like Figure 8 and Fig. 9 As shown, the mandibular movement assembly includes: a movement rod 501, a movement rod adjustment seat 502, a closure fork 503, a silicone gasket 504, a rubber band 505, a tracing pen 506 and a tracing pen adjustment block 508. The jaw occludes the mandible to drive the mandibular movement assembly to move. There is a groove 507 at the tail of the tracing pen. The tracing slider is equipped with a tracing pen adjustment screw 510, which can control the tightness of the tracing pen to cooperate with the movement of the mandibular movement assembly for tracing.

[0057] Furthermore, a new digital jaw position analyzer has a moving part whose moving direction is parallel to or perpendicular to the long axis of the left and right horizontal rods.

[0058] Exemplary, a conventional use step of a digital jaw position analyzer:

[0059] Step 1: Adjust the left 102 and right horizontal rods 103 to put the ear ball into the external auditory canal, adjust the ear ball adjustment screw 108 on the ear ball so that the ear ball fits the external auditory canal, fix the nose pad 601, adjust the horizontal adjustment screw 604 and the vertical fixing screw 607 and tighten them;

[0060] Step 2: Move the vertical plate 402 to fit the temples and clamp them, pass the straps through the strap mounting holes 408 at the back of the head 407 and the top of the head, and tie the straps so that the facebow assembly 1 does not shake;

[0061] Step 3: Adjust the infraorbital point pointer 201 so that its head is aligned with the infraorbital point;

[0062] Step 4: Retract the ear ball adjustment screw to make the ear ball 109 withdraw 2-10 mm, so that the condyle will not collide with the ear ball when moving, install the mandibular movement component 5, perform condylar axis tracing and condylar movement curve tracing, and read the condylar axis point scale value;

[0063] Step 5: Remove the mandibular motion assembly, tighten the ear ball adjustment screw, place silicone rubber impression material on the occlusal fork 503, fix the occlusal fork on the maxillary teeth, and install and fix the universal joint 509;

[0064] Step 6: After the silicone rubber impression material solidifies, loosen the fixing screws of the left and right horizontal rods of the face bow assembly, remove the fork and universal joint, and remove the face bow assembly;

[0065] Step 7: After scanning the occlusal fork and face bow, obtain the spatial relationship between the maxillary teeth and the ear ball, input the infraorbital point scale value and the condylar axis point scale value into the software, and the jaw position analysis can be completed.

[0066] Exemplary, another use step of a digital jaw position analyzer:

[0067] Step 1: Align the mandibular dental model with the occlusal fork on the mandibular motion assembly without installing the facebow assembly;

[0068] Step 2: Stick a piece of white paper on the pretragus area of ​​the head, and after the condylar axis is traced, the condylar axis surface points are on the white paper;

[0069] Step 3: Without installing the vertical plate, use the condylar axis pointer to point to the condylar axis surface point just traced, and read the condylar axis point scale value;

[0070] Step 4: Read the condylar axis point scale value and input it into the software for digital analysis.

[0071] The present invention discloses a digital jaw position analyzer including: a face bow component, an infraorbital point component, a condylar axis component, a tracing component and a mandibular movement component. The face bow can be used as a conventional face bow, and the condylar axis and the mandibular movement trajectory can be traced to directly obtain the spatial coordinates of each key point, obtain the condylar axis coordinates into the same coordinate system of the face bow, and input the above scale value into the software, so as to realize digital analysis, and no complex mandibular movement recorder is required, and the jaw position analysis can be completed more quickly. The multi-function is integrated, and the doctor does not need to purchase two sets of devices, and the mandibular position is accurately analyzed, which is used to check whether the mandibular position of orthodontic patients is abnormal, and to find patients with more serious mandibular position abnormalities, and to assist orthodontists in better program design, prevent possible temporomandibular joint problems, make the correction results more stable, save costs, and greatly simplify clinical work.

[0072] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0073] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A digital jaw position analyzer, characterized in that: include: Face bow assembly, used for face bow installation and width adjustment; Infraorbital point component, used to measure the spatial coordinates of the infraorbital point; Condylar axis component, used to measure the spatial coordinates of the condylar axis; A recording component for recording the condylar axis and condylar motion; The mandibular motion component is used to provide the power for opening and closing the mandible during condylar axis tracing and condylar motion tracing.

2. The digital jaw position analyzer according to claim 1, characterized in that: The face bow assembly includes: a fixed body, a left horizontal rod, a right horizontal rod, a universal joint fixing hole, a bow part, an ear ball, a condyle axis pointer and a nose pad part. The left and right horizontal rods are located on the left and right sides of the fixed body, are parallel to each other and have a length adjustment component. The two ends of the left and right bow parts are respectively connected to the ear balls and the left and right horizontal rods. The nose pad part is located at the upper end of the fixed body, and the distance between the center points of the bilateral ear balls corresponds to the value indicated on the condyle width scale.

3. The digital jaw position analyzer according to claim 2, characterized in that: The length adjustment components of the left and right horizontal rods of the face bow assembly have scale values, and the scale values ​​correspond to the telescopic lengths of the left and right horizontal rods.

4. The digital jaw position analyzer according to claim 2, characterized in that: The ear ball of the face bow assembly has an adjustment screw, which is used to adjust the depth of the ear ball entering the external auditory canal. When the ear ball adjustment screw is completely tightened, the distance between the center points of the bilateral ear balls is consistent with the condyle width scale value of the fixed body, and the sliding directions of the vertical slider, horizontal slider and nose pad slide bar of the nose pad are perpendicular to each other.

5. The digital jaw position analyzer according to claim 1, characterized in that: The infraorbital point assembly comprises an infraorbital point pointer and a pointer slider. The convex groove head of the pointer slider is embedded in the U-shaped hole of the infraorbital point pointer. The infraorbital point pointer and the pointer slider cooperate to realize mutually perpendicular forward and backward and horizontal sliding.

6. The digital jaw position analyzer according to claim 1, characterized in that: The plane formed by the vertex of the infraorbital point pointer in the infraorbital point assembly and the center points of the ear balls on both sides is parallel to the plane formed by the left and right horizontal rods.

7. The digital jaw position analyzer according to claim 1, characterized in that: The condylar axis assembly comprises: a condylar axis pointer, a condylar axis slide bar and a condylar axis slider. The condylar axis slide bar slides in the front-back direction, the condylar axis slider slides in the vertical direction, and the condylar axis pointer slides in the left-right direction in the condylar axis slide bar.

8. The digital jaw position analyzer according to claim 1, characterized in that: The tracing assembly comprises: a T-shaped tracing board, a tracing slider, a scale plate and scale paper. The horizontal plate of the T-shaped tracing board has a U-shaped groove which matches the convex groove of the tracing slider. The tracing board slides in front and back and left and right directions.

9. The digital jaw position analyzer according to claim 1, characterized in that: The mandibular movement group comprises: a tracing pen, a tracing pen adjusting block, a silicone gasket, a rubber band, a movement rod, a movement rod adjusting seat and a closing fork, and the tail of the tracing pen is provided with a groove.

10. The digital jaw position analyzer according to claim 2, characterized in that: The movement directions of the face bow component, the infraorbital point component, the condylar axis component, the tracing component and the mandibular movement component, as well as the components on the five components, are parallel to or perpendicular to the long axes of the left and right horizontal rods.

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