KR101816497B1 - Dental Articulator That Copying Median Atlanto-axial Joint Movement - Google Patents

Abstract

The articulator according to the present invention is capable of simulating a medial condylar motion, comprising: a mandibular mount on which a mandible is mounted; A maxilla fixture on which a maxilla model is mounted; A connecting assembly rotatably connecting the maxillary fixing barrel to the mandrel fixing barrel so as to be spaced apart from the mandrel fixing barrel; A fixing assembly for fixing the pivot shaft; And a cutter bar installed between the maxillary fixing bar and the mandibular fixing bar to maintain a distance between the maxillary fixing bar and the mandibular fixing bar.

Description

{Dental Articulator That Copying Median Atlanto-axial Joint Movement}

The present invention relates to an articulator capable of easily performing an easy detachment of an operation model and an occlusion adjustment in an oral cavity model, in which the maxillary bone is simulated as a motion of the maxillary right atrophy joint.

The dental articulating articulator is a tool used for dental prosthodontists to make dental prosthesis by putting the dental prosthesis made by the dentist into a tooth model. That is, at the time of manufacturing the dental prosthesis, the manufactured dental prosthesis is inserted into a tooth model, the tooth model is mounted on the articulator, and the movement of the mandible is simulated to confirm whether or not the other tooth of the patient is occluded with the prosthesis. Therefore, the articulator is designed to move the tooth model up, down, left and right, and back and forth so that the mandibular movement can be simulated.

However, conventional articulators have been constructed so that a member to which a tooth model is coupled can be moved up and down, left and right and back and forth through adjusting means such as an adjusting screw and the like. Therefore, during the occlusal test of the dental prosthesis, the worker must simulate the motion of the upper and lower mandibles while manipulating the control means of the articulator. Therefore, the work is inconvenient and takes a lot of time.

In addition, the mandibular body of the actual human body has a complex combination of up and down, right and left and forward and backward movements. In the conventional articulator, the tooth model described above often fails to produce a complex movement.

In order to solve this problem, Korean Patent No. 10-0920892 'Dental Articulator' is easy to simulate the motion of the upper and lower mandible, and it is possible to confirm whether or not the dental prosthesis is occluded in a similar or identical condition to the human body, The present invention relates to a tooth articulator of a new structure capable of manufacturing a tooth prosthesis that is accurately engaged with a tooth of a tooth.

Such a tooth articulator is disadvantageous in that it is difficult to fix it again after the motion is simulated because a separate fastener is used for the left and right movements based on the axis that rotates up and down.

As another prior art, a Korean Registered Utility Model No. 20-0220278 'Dental Orthopedic Articulator' relates to an articulator capable of easily detachably fixing a dental office work model to an articulator and easily implementing an occlusal adjustment.

In this articulator, the ball joint is used to simulate the movement of the mandible. However, since the position of the ball joint is close to the tooth model and is difficult to fix, there is a disadvantage that it is difficult to utilize it properly.

The present invention has been devised to overcome the problems of the above-described technique, and provides an articulator capable of fixing the mandibular model and the maxilla model, and connecting the two via a pivotal axis to perform a median circular joint motion simulation.

Further, the present invention provides a configuration in which the upper and lower mandibles can be rotated to a desired position and then the rotated shape can be maintained.

In addition, even when the rotary shaft is divided into two axes, the spacing between the rotary shafts is minimized, thereby providing a configuration that allows the robot to move closer to the real one.

In addition, there is provided a configuration for controlling the rotation of the rotary shaft so as to limit the movement of the mandibular motion.

In order to achieve the above object, the present invention provides an articulator capable of simulating medial rectus articulation, comprising: a mandibular fixture on which a mandible model is mounted; A maxilla fixture on which a maxilla model is mounted; A connecting assembly rotatably connecting the maxillary fixing barrel to the mandrel fixing barrel so as to be spaced apart from the mandrel fixing barrel; A fixing assembly for fixing the pivot shaft; And a cutter bar installed between the maxillary fixing bar and the mandibular fixing bar to maintain a distance between the maxillary fixing bar and the mandibular fixing bar.

In addition, the maxillary fixation band and the mandibular fixation band may include a base plate for fixing the maxillary bone model and the mandibular bone model, a main groove formed on the central portion of the base plate, and a plurality of sub- And a grooved groove.

In addition, the incising rod and the connecting assembly may further include a reference groove having a circumferential surface that meets a virtual extension line extending horizontally from the boundary between the mandible model and the maxillary bone model.

In addition, the incisal rod may extend vertically across the maxillary fixation band and the mandibular fixation band, and a portion where the imaginary extension line extending horizontally from the boundary between the mandibular model and the maxillary bone model intersects the extension line And an arc-shaped portion protruding in a vertical direction and bent in an arcuate shape to form an arcuate shape.

The present invention provides an articulator capable of simulating medial joint motion,

1) The rotation axis is used to connect the mandibular fixation to the maxillary fixation band so that the motion of the condylar joint can be reproduced,

2) It is possible to provide a structure in which each fixed base can be rotated to a desired position and then the rotated shape can be maintained,

3) Separate the pivot shaft by two axes. By fixing the pivot position through the sub shaft by placing the sub shaft between the pivot shafts, it is possible to fix the position without forming the long pivot shaft unnecessarily or without widening the pivot shafts. It is possible to provide a configuration capable of performing a median circular joint motion simulation closer to the actual one,

4) A configuration is provided for controlling the rotation of the mandible through the pivoting shaft to limit the movement of the mandible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a basic structure of an articulator capable of simulating the median circular joint motion of the present invention. FIG.
FIG. 2 is a side view showing a basic structure of an articulator capable of simulating the median condylar motion of the present invention. FIG.
FIG. 3 is a front view showing an embodiment of an incising rod in an articulator capable of simulating the medial rectus articulation of the present invention. FIG.
FIG. 4 is a perspective view showing a detailed configuration of an upper and lower jaws of an articulator capable of simulating the medial joint of the present invention. FIG.
FIG. 5 is a perspective view showing the configuration of the rotation axis of the articulator of the present invention capable of simulating the medial joint motion.
FIG. 6 is a perspective view illustrating an embodiment of a sub-axis of an articulator capable of simulating the medial joint motion of the present invention. FIG.
FIG. 7 is a conceptual diagram showing an embodiment in which a bevel gear for rotation control is applied in an articulator capable of simulating the medial joint motion of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale and wherein like reference numerals in the various drawings refer to like elements.

FIG. 1 is a perspective view showing the basic structure of an articulator capable of simulating the medial joint of the present invention, FIG. 2 is a side view showing a basic structure of an articulator capable of simulating medial joint motion of the present invention, FIG. 4 is a front view showing an embodiment of the incising rod 500 in an articulator capable of simulating the median circular articulation motion of the invention. FIG. 4 is a front view of the incising rod 500, 200 shown in Fig.

The articulator is a configuration for testing the implant so that it can judge whether the implant is suitable for the user before mounting the implant to the patient by simulating the motion of the upper / lower mandible by mounting the mandibular and maxilla models . Referring to FIGS. 1 and 2, the articulator includes an upper mandible 100 on which a mandible model is mounted; The upper assembly 200 is mounted on the upper jaw 200 and the upper jaw 200 is mounted on the lower jaw 100. The upper jaw 200 and the lower jaw 100 are spaced apart from each other, (300); A fixing assembly 400 for fixing the rotary shaft 310; And an incising rod 500 additionally provided between the upper and lower jaws 200 and 100 to maintain an interval adjusted by the connection assembly 300. [

That is, referring to the drawings, it is important that the mandibular fixture 100 and the maxillary fixture 200 have a sufficient area so that at least the mandibular model and the maxillary bone model can be respectively mounted. At this time, Since the model has a certain level of height, it is of course necessary that the spacing between the two fixtures is spaced by the height of each model. Thus, the configuration of the connection assembly 300 is further included to separate the two. Although the connection assembly 300 will be described in more detail in the following description, the gap between the region protruding from the mandibular fixture 100 and the region projected from the maxillary fixture 200 is spaced apart, So that the movement of the upper and lower mandibles moving up and down is simulated in the human body.

However, the adjustment of the rotary shaft 310 is advantageous in that it can be freely adjusted up and down. The limit / fixed configuration will be described in more detail later. However, since it is difficult to fix the position after the rotation, it is possible to limit the range of rotation by hand, The assembly 400 should be essentially included. Further, the present invention further includes a configuration of the incising bar 500 that is provided between the upper fixture 200 and the lower fixture 100 to maintain a gap therebetween as a fixing means for assisting the fixation assembly 400. The cutter bar 500 is preferably a rod and is preferably inserted between the upper fixture 200 and the lower fixture 100 or a groove or the like for fitting the cutter bar 500 into the upper fixture 200 separately And a mounting portion for mounting the incisal rod 500 separately to the mandibular fixture 100 may be further provided to assist fixing of the mounting portion. It goes without saying that a stopper structure may be formed by attaching a screw or the like to the cutter bar 500.

Here, the more detailed structure and additions of the basic configuration are as follows.

First, the maxillary fixation band 200 and the mandibular fixation band 100 are described as being mounted on the maxilla and mandible, respectively. However, when the shape of the maxilla and mandible of the human body is examined, it can be seen that if the model is placed on the upper fixture 200 or the lower fixture 100 having a flat surface, which is not flat and has many bends, . Therefore, it would be great if the model is fixed on each fixing plate at all, but since the oral structure of all persons is different, it is very wasteful to have another fixing plate in order to mount another model. Therefore, it is preferable to further include a separate model support 110 to which the model is fixed so that the maxillary bone model or the mandible model can be attached to each fixing base, and the attached portion can be easily replaced. The model base 110 has a base plate 111 as a base and has a main groove 112 formed in the center of the base plate 111 and spaced apart from the main groove 112 , And a plurality of sub-grooves (113) arranged radially with respect to the main grooves (112) are further formed.

Here, the main groove 112 is preferably provided with a magnet or a weight to form a maxillary bone model or mandibular bone model or a model base on which a model is placed. In this case, since no additional magnet or weight is additionally inserted into the sub-grooves 113 in addition to the main grooves 112, a part of the model or a part of the model base flows into the sub-grooves 113 and hardens, So that it is fixed so as not to fall out. In the case of the sub-grooves 113, it is preferable that two or more grooves are formed, but it is preferable that at least three or four grooves are arranged at equal intervals.

Further, in addition to such a fixed configuration, it is possible to further include a configuration that allows easy identification of the horizontal or vertical of the model mounted on the articulator.

That is, the incisal rod 500 and the connection assembly 300 may further include reference grooves 510, which surround the surface of the mandibular model and the maxillary bone, which meet a virtual extension extending horizontally from the boundary. As can be seen from the oral structure, the mandible and the maxilla are separated based on the boundary line between the teeth. This boundary is a necessary configuration to balance for correct correction of the tooth implant, and thus a separate marker, such as the reference groove 510 for balancing the articulator, can be used in a variety of situations where rapid adjustment is required. Of course.

Referring to FIG. 3, the incisal rod 500 is disposed in a direction opposite to the connecting assembly from the mandibular model and the maxillary bone model as shown in FIG. 3 (a) The problem is that, regardless of whether it is installed at any position, the cutter bar 500 may cover part of the model. Therefore, since it is difficult to configure the incisal rod 500 so as not to block the model, it is possible to prevent the incisal rod 500 from touching an important part of the model to be screened (for example, Etc.) are not covered. This configuration can be configured such that the incising bar 500 is not obstructed forcibly by a physical method such as bending the incising bar 500 without forming the incising bar 500 vertically. 3 (b), the most suitable method is to protrude a portion of the incisal rod 500 that meets the imaginary extension line extending horizontally from the boundary between the mandibular model and the maxillary bone model in a direction perpendicular to the extension line, And a curved portion 520 bent in an arcuate shape such that the protruded portions form an arcuate shape. In other words, the shape of the incisal rod 500 is shaped like omega (Omega) by the arc 520 so that an important part can be exposed through the rounded part.

Returning back to the connecting assembly 300, the pivoting configuration will now be described in more detail with reference to FIG.

As described above, the detailed structure of the connection assembly 300 is a bending extension extending from the peripheral side to the upper side of the mandibular fixture 100, and includes a fixed holder 330 on which the pivot 310 is mounted, An occlusal extension plate 320 which is bent and extended from the circumferential side to the lower side of the fixed base 200 and has a pivotal ring 340 fitted to the pivotal axis 310 at an end thereof, And is connected rotatably through the ring 340 coupling. In the case of the fixed cradle 330, the cradle extension plate 320 is extended at a predetermined height (most preferably equal to or higher than the height of the mandible model) Most preferably a height equal to or higher than the height of the maxilla model). That is, it can be said that the gap between the upper and lower jaws 200 and 100 is increased by the height corresponding to the height of the maxilla model and the mandible model through these two configurations.

FIG. 5 is a perspective view showing the configuration of the periphery of the rotary shaft 310 of the articulator capable of performing the median circular joint motion simulation according to the present invention.

The first pivot 311 and the second pivot 312 may be spaced apart from each other by a gap between the pivot 310 and the pivot 340, The first rotating ring 341 and the second rotating ring 342 fitted to the first coaxial shaft 311 and the second rotating shaft 312 are respectively disposed on the left and right sides of the sub clearance . In this case, the narrower the gap is, the more important it is that the articulation of the medial joint motion can be made more important by the structures described later, and since most of the articulators are formed with a gap of about 2 to 5 cm in this configuration, There is a problem in that the simulation of the medial joint motion during medial rotation including the left and right directions is inaccurate. Therefore, it is important that the interval is set within 10 mm, in order to improve the accuracy of such a motion simulation. The gap can be configured to be less than 10 mm, so that it is possible to provide a very advantageous structure for the motion simulation.

Here, the fixed holder 330 may further include a sub-axis 350 having a curved surface extending in a predetermined length from the gap toward the bottom surface and extending inwardly convexly. The sub axis 350 is formed between the two pivot shafts 310 as shown in the drawing and extends roundly toward the bottom surface or when the pivot shafts 310 are divided into two parts, It is needless to say that the present invention is applicable to a method of forming the support shaft 310 on a separate supporting member which is lifted up to a certain height or a method of forming the support shaft 310 on a separate supporting member when the rotating shaft 310 is not divided.

The pivoting axis 310 and the subaxis 350 are configured such that the pivoting movement is performed through the pivoting axis 310 and the fixed movement is via the subaxis 350 so that both the pivoting axis 310 and the pivoting axis 310 can be rotated No area or length is required. More specifically, the first rotating shaft 311 and the second rotating shaft 312, which are generally formed with a gap, are constructed so as to be capable of simple rotation, and are separately provided through a sub shaft 350 located therebetween The distance between the two pivot shafts 311 and 312 does not need to be widened, so that it is advantageous in simulating the medial joint motion, Even when it is rotated, the rotation can be simulated in a manner similar to the actual one by such an excessively unfolded configuration.

In addition, the occlusal extension plate 320 further includes a fixing portion 360 formed at a position spaced apart from the sub-gap toward the front of the position of the maxillary bone model and having a fixing groove 361 passing through the inside thereof in the forward and backward directions The fixing bar 400 is inserted into the fixing groove 361 by a length longer than the length of the fixing groove 361 and the fixing bar 410 is wound around the fixing bar 410 The fixing assembly 400 includes the fixing and stretching means 420 for supporting the fixing bar 410 in the forward and backward directions within the fixing groove 361 so that the fixing assembly 400 is fixed And is fixed by being continuously brought into contact with the curved surface of the sub-shaft (350) through the elasticity of the expanding and contracting means (420). It will be appreciated that the fixing groove 361 of the fixing part 360 and the fixing bar 410 of the fixing assembly 400 may be threaded to be coupled through threading.

FIG. 6 is a perspective view illustrating an embodiment of a sub-axis 350 of an articulator capable of performing median cycloplegic exercise simulation of the present invention.

At this time, as a configuration utilizing the sub-axis 350, an inner groove 351 penetrating back and forth from the surface of the curved surface in the sub-axis 350 toward a vertical surface located on the opposite side of the curved surface from the sub- And a plurality of columns 366 having vertical sections of the same height and width are sequentially stacked on the inner groove 351. An extension of each column 366 is formed in the inner groove 351, And a pushing head 363 having a longitudinal section having the same height and width as the protruding body 362 and a pushing head 362 having the same height and width as the protruding body 362, And a hook portion 620 including a head stretchable member 365 for providing an elastic force to the head 363 and assisting the up and down movement of the pushing head 363.

That is, the sub-shaft 350 is formed with a kind of engagement protrusion corresponding to the fixed assembly 400, and the fixed assembly 400 can be rotated up and down only to a desired position through the engagement protrusions. The range of rotation is limited. That is, as shown in the drawing, a plurality of columns 366 are stacked, and the substantial length of each column 366 is reduced as the height increases, so that the cross section of the sub-axis 350 has a length (width) And the length is changed corresponding to the change. At this time, it is most preferable that the columns 366 of the projecting body 362 do not protrude outward from the inner groove 351 in the initial state as shown in the figure. The pushing head 363 and the pushing head 363 are moved upward and downward in this space by a slight space at the opposite side (the outside of the articulator) The pushing head 363 can be further provided with a head stretchable member 365 which can be restored to its original position when the guide member 361 is rotated by the pushing member 362. [ When the pushing head 363 is moved to a desired position in the latching portion 620, the width of the pushing head 363 may be set to a predetermined value, The fixing bar 410 is protruded from the curved surface so that when the fixing assembly 400 is rotated in contact with the curved surface, the fixing bar 410 is brought into contact with the column 366 of the protruding body 362 protruding from the curved surface So that it is no longer possible to rotate upward or downward, thereby making it possible to limit the rotation range.

Of course, in this configuration, the sub shaft 350 needs to further include a structure that allows the pushing head 363 to be fixed at a predetermined position after being pivoted up and down. Accordingly, And may further include a handle fixing groove 352 which is additionally embedded in the side (either left or right or left and right) at regular intervals along the height direction so that the pushing head 363 The handle 364 may further include a handle 364 that is extended from the side surface side to the outside so as to be fitted in the handle fixing groove 352 and fix the position of the pushing head 363, It is possible to apply a change such as giving a curved shape to the outer shape of the handle fixing groove 352,

Furthermore, in order to accurately simulate the medial condylar motion, it is necessary to construct not only the vertical movement but also the left and right movement in a certain radius. In general, in an articulator, only the upper and lower rotations are concentrated in consideration of only the mouth shape and the open shape. In addition, the articulator is constructed so that the left and right rotations can be additionally performed so as to simulate the joint motion through the near realistic three-dimensional motion.

7 is a conceptual diagram showing an embodiment in which a bevel gear 600 for rotation control is applied in an articulator capable of simulating the medial condylar joint motion of the present invention.

The rotary shaft 310 is mounted on the end surface of the fixed holder 330 and is rotatable about a shaft axis in which one of the first rotary shaft 311 and the second rotary shaft 312 is rotatably inserted. The apparatus according to any one of the preceding claims, further comprising a mounting portion (610), wherein the gap side end portion of any one of the first pivotal axis (311) and the second pivotal axis (312) The bevel gear 600 is further mounted on the sub-gap side end of the fixed bar 410 so that any one of the shafts and the fixed bar 410 can be rotated while being rotated.

The fixing portion 360 may include a first rotating shaft 311 on which the bevel gear 600 is mounted and a second rotating shaft 312 on which the bevel gear 600 is mounted so that a pair of the bevel gears 600 can be rotated and engaged with each other, 312 in a direction perpendicular to the direction of the arrow.

According to such a configuration, when the first rotation shaft 311 or the second rotation shaft 312 is rotated as a more convenient vertical rotation method, this rotation is transmitted to the fixing bar 410 by the bevel gear 600 The fixing bar 410 is rotated. At this time, since the fixing bar 410 is in close contact with the curved surface of the sub shaft 350, the fixing bar 410 can be moved upward or downward by the rotation. This movement can be applied differently according to the eccentric position of the fixing bar 410, and consequently, it can be applied to various modifications depending on the type of the constitution.

Furthermore, the shaft holder 610 can be rotatably mounted on the fixed holder 330 via the first ball joint 321. Here, the term " ball joint " does not mean only a simple ball, but means a ball that includes both a top plate and a bottom plate (not shown) in which a ball, which is a base structure capable of rotating three- Means an assembly of meaning. The occlusal extension plate 320 is rotated by the rotation of the hook plate portion 322 including the rotation ring 340 and the rotation plate portion 323 including the fixing portion 360 to another second ball joint 611 So as to control the rotation of the upper fixture 200. That is, if the conventional pivoting shaft 310 can be pivoted only in the upper and lower directions, it can be pivoted in the left and right direction, so that the pivoting member 310 can be pivoted similarly to the actual oral cavity structure. Of course, even in such a rotation, the position can be still fixed after the final rotation by the fixing assembly 400, and the rotation conversion by the bevel gear 600 is still effective, so that the first rotating shaft 311 When the pivot shaft 310 mounted on the shaft mounting portion 610 of the second coaxial shaft 312 is turned, it is possible to more easily control the up-and-down and pivotal movement.

As described above, the articulator capable of simulating the medial joint motion according to the present invention has been described in the above description and drawings, but it is to be understood that the spirit of the present invention is not limited to the above description and drawings, Various changes and modifications may be made without departing from the technical idea of the present invention.

100: lower mandrel 110:
111: base plate 112: main groove
113: Sub-groove 200:
300: connection assembly 310:
311: first coaxial shaft 312: second coaxial shaft
320: occlusal extension plate 321: first ball joint
322: hook plate portion 323:
330: Fixing stand 340: Rotating ring
341: 1st turning ring 342: 2nd turning ring
350: sub shaft 351: inner groove
352: handle fixing groove 360:
361: Fixing groove 362: Projection body
363: pushing head 364: handle
365: Head stretching piece 366: Column
400: stationary assembly 410: stationary bar
420: Fixed stretching means 500:
510: Reference groove 520:
600: Bevel gear 610: Axial mounting part
611: second ball joint 620:

Claims (11)

An articulator capable of simulating medial joint motion,
Mandibular fixture with mandibular fixation;
A maxilla fixture on which a maxilla model is mounted;
A fixed cradle extending from the circumferential side of the mandibular fixture toward the upper side and having the pivot shaft mounted on an end thereof, A connecting assembly including a bending extension plate that is bent and extended from a peripheral side to a lower side of the body and has a pivotal ring fitted to the end of the pivotal shaft;
A fixing assembly for fixing the pivot shaft to the connection assembly;
And an incising bar provided between the maxillary fixing bar and the mandible fixing bar to maintain a gap between the maxillary fixing bar and the mandible fixing bar,
Wherein the pivot shaft is spaced apart with a first pivot axis and a second pivot axis spaced apart from each other by a gap,
Wherein the first and second pivotal rings are respectively disposed on the left and right sides of the first pivotal shaft and the second pivotal shaft,
Wherein the fixed cradle includes a sub axis having a curved surface extending in a predetermined length from the gap toward the bottom surface and extending convexly inwardly,
Wherein the occlusal extension plate includes a fixing part spaced forward from a position where the maxillary bone model is located from the sub clearance and having a fixing groove penetrating the inside of the maxillary bone forward and backward,
The fixing assembly includes:
And a fixing and expanding and contracting means for supporting an anteroposterior rotation of the fixing bar in the fixing groove by providing an elastic force by being wound on the fixing bar, the fixing bar being inserted into the fixing groove by a length longer than the length of the fixing groove, Articulator capable of simulating medial joint motion. The method according to claim 1,
Wherein the upper and lower mandibles are fixed,
A base plate for fixing the maxilla and the mandible,
A main groove formed on the central portion of the base plate,
The articulator according to claim 1, further comprising a plurality of sub-grooves radially disposed around the main groove. The method according to claim 1,
Wherein the incising rods and the connection assembly are formed of a metal plate,
Further comprising a reference groove in which a portion extending horizontally from a boundary between the mandible model and the maxillary bone model is inserted into the reference groove. The method of claim 3,
The cutting-
And an arcuate portion formed by bending the circumferential portion formed with the reference groove into an arcuate shape is further formed. delete delete delete The method according to claim 1,
In the sub-axis,
An inner groove penetrating back and forth from a surface of the curved surface toward a vertical surface located on the opposite side of the curved surface,
A protruding body in which a plurality of columns are sequentially laminated on the inner groove and whose extended length of each column decreases in proportion to a height stacked in the inner groove; and a vertical section having the same height and width as the protruding body The articulator according to claim 1, further comprising a latching part including a pushing head and a head stretching piece for assisting an up-and-down rotation of the pushing head by applying an elastic force to the pushing head. 9. The method of claim 8,
On the side surface of the pushing head,
A handle is protruded,
The sub-
Further comprising a handle fixing groove formed at an entrance of the inner groove located on the vertical surface, the handle fixing groove being further inserted laterally at regular intervals along a height direction, and the handle fixing groove for locking the handle. The method according to claim 1,
The above-
Further comprising a shaft holder mounted on an end surface of the fixed holder and in which one of the first and second shafts is rotatably inserted,
Wherein one of the first rotating shaft and the second rotating shaft and an end portion of the fixing bar are provided with:
And a bevel gear is further mounted on the bevel gear so as to be pivoted through the bevel gear. 11. The method of claim 10,
Wherein the shaft-
A first ball joint rotatably mounted on the fixed mount via a first ball joint,
The occlusal extension plate includes:
A hook plate portion including the pivot ring,
And the rotation plate portion including the fixing portion is rotatably connected via the second ball joint to control the rotation of the maxillary fixing frame.

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