JP3244445B2 - Auxiliary tool for articulator and method of mounting tooth model on articulator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary tool used for mounting a dental model in an articulator and a method of mounting the dental model on an articulator. In particular, the present invention relates to an auxiliary tool for an articulator and a method of mounting a tooth model suitable for creating a tooth positioner used in the final stage of orthodontic treatment and the like.

[0002]

2. Description of the Related Art In the orthodontic clinic, in order to achieve closer occlusion (occlusal) in the final stage of orthodontic treatment,
Tooth Positio is a device used for slight tooth movement such as cases that have returned after a short time after treatment.
ner). The tooth positioner divides the tooth model, which is created based on the impressions of the patient's upper and lower jaws, as necessary, cuts out the teeth, and newly rearranges (sets up) the model with ideal tooth alignment and occlusion. )
It is created based on the patient's setup model.

[0003] The tooth positioner has a structure similar to a mouthpiece (used in sports such as boxing), and is made of a material having elasticity and original restoring force such as rubber or silicon. The dentition is engraved. When the tooth positioner is worn on the patient's mouth, the tooth positioner is first deformed due to the difference between the actual dentition and the dentition of the set-up model engraved on the tooth positioner. After that, the original restoring force of the tooth positioner applies a continuous weak force to the dentition during the mounting period, and finally moves the teeth to the ideal position indicated by the setup model. The use of this device has the advantage of eliminating the need for using a complicated device in the final stage of the orthodontic treatment or shortening the installation period of the complicated device. In recent years, such utility has been reviewed, and tooth positioners tend to be used relatively frequently.

FIG. 1 is a perspective view showing an example of a tooth positioner, and FIG. 2 schematically shows the tooth positioner mounted on a patient's mouth. As described above, the tooth row 2 on the setup model is engraved on the tooth positioner 1. Usually, the upper dentition 2 and the lower dentition not shown are engraved. When the appliance 1 is worn on the mouth, the teeth 2 engraved on the appliance 1 and the actual patient's teeth T _{U and} T _D are engaged with each other.
First, the tooth positioner 1 is deformed, and a subsequent weak force is applied to the actual tooth rows T _{U and} T _D by the restoring force of the original shape. This applied force is illustrated by + and-in FIG.

However tooth positioner 1, its structure, because the meshing surface of the upper dental T _U and the lower jaw dentition T _D (face the upper and lower teeth meshes) also covered with the material, the upper and lower teeth T _U,
The device 1 is interposed between T _D (the portion indicated by 3 in FIG. 2). That is, when the tooth positioner 1 is mounted, the upper jaw and the lower jaw are opened. Actually, since the upper jaw is fixed to the head, the lower jaw opens downward and backward about the temporomandibular joint.

[0006] By the way, a setup model of a patient is made in a state where the upper and lower dentitions are engaged.
This is because the meshing surface, the tooth size, and the tooth morphology vary from patient to patient, and an ideal tooth arrangement in the meshing state cannot be predicted. On the other hand, the tooth positioner was created by opening the setup model created in the meshed state by an appropriate amount, that is, the upper and lower jaws were opened by the thickness of the instrument that would be interposed between the upper and lower dentition, and in that state, Created.

[0007] Therefore, the setting of the movement state of the jaw at the time of opening must be compatible with the anatomical and physiological functions of the patient's temporomandibular joint. Otherwise, even if the upper dentition and the lower dentition are each properly corrected by using the tooth positioner, if the device is removed and the upper and lower dentitions are actually engaged, the teeth are not properly engaged, or However, they will be engaged with the wrong upper and lower jaw relationship. As a result, the tooth row may be displaced immediately after the treatment, or an unreasonable load may be imposed on the temporomandibular joint which corrects the dislocation between the upper and lower jaws every time the tooth is chewed. In any case, wearing a device with an improperly set relationship between the upper and lower jaws distorts the position of the lower jaw and puts a burden on the temporomandibular joint.

Therefore, in order to eliminate such adverse effects, articulators and lateral radiographs have conventionally been used when setting the amount of opening between the upper and lower jaws. The articulator is
It is a device created to connect the upper jaw, the lower jaw, and the dental model, and reproduce the movement of the human temporomandibular joint. However, this device is only a device for confirming the state where the dentition is engaged, and the movement of the jaw joint is
It's just a reproduction of some average movement. In other words, the articulator has not been able to correctly reproduce the movement of the temporomandibular joint that is suitable for each patient.

Therefore, it cannot be said that it is impossible to faithfully reproduce the degree of opening between the upper and lower jaws of an individual patient simply by using an articulator. The method using the lateral radiograph is to trace the upper dentition and the lower dentition on the radiograph of the face taken from the side, and open the lower dentition with the temporomandibular joint as the axis, This method sets the movement of the temporomandibular joint with reference to the distance between the upper and lower jaw teeth (gap). However, this method has a problem that it is almost impossible to take the right and left temporomandibular joints neatly when taking the radiograph. In addition, even if a photograph can be taken neatly, it is not accurate enough because the three-dimensional movement of the upper and lower jaws of the patient is two-dimensionally represented by a radiograph taken from the side. There is a disadvantage that it cannot be said.

In consideration of the above, in order to know the relationship between the upper and lower jaws, it is necessary to consider the state in which the patient actually bites and the state in which the jaw is opened by the thickness of the tooth positioner in the actual patient's mouth. It would be best to record and reproduce the two on the articulator. This is because, if a skilled dentist sets the correct occlusion and opening position of the patient in the patient's mouth, and records the relationship between the upper and lower jaw (hereinafter referred to as "bite"), It is not difficult. In order to take a bite, a silicon-based material excellent in operability and reproducibility can be easily obtained.

[0011]

However, the use of two tools taken from a patient to reproduce two types of upper-lower jaw relations at the time of occlusion and opening on an articulator is based on the following reasons. Could not be realized. At present, when mounting the tooth model on the articulator, a method of directly fixing the model of the maxillary dentition and the lower dentition with the plaster directly to the part corresponding to the upper and lower jaws of the articulator, and, if necessary, the tooth model There is a method in which the tooth model is fixed to the articulator using a magnet or a screw so as to be detachable from the articulator. In the latter method, a magnet-type or screw-type mounting plate or a so-called split cast is usually used. When making a tooth positioner, the latter method, in which the tooth model can be removed from the articulator, is suitable for technical operations.

Therefore, using two kinds of bites collected in the oral cavity of the patient, there are two types: a state in which the upper and lower jaw teeth are meshed, and a state in which the teeth are opened by the thickness of the tooth positioner.
Consider reproducing the relationship between the upper and lower jaw of the state on an articulator. When reproducing these two states on the articulator, it is conceivable to mount the upper dental model by the following two methods while keeping the mounting position of the lower dental model.

(1) Only two upper teeth models are prepared and the two states are respectively mounted on the upper jaw of an articulator using a bite taken in an engaged state and a bite taken in an open state. I do. At this time, as shown in FIGS. 3A and 3B, there are two types of upper jaw blocks including the maxillary dentition model 4 of A and B (the block of A reproduces the occlusal state, and the block of B is The opening state is reproduced.) Therefore, by replacing these two blocks A and B with the articulator 100, two types of relationship between the upper and lower jaws can be reproduced.

However, even if the tooth of the tooth model in the occlusal state shown in FIG. 3 (A) is cut off and newly rearranged to create a setup model, the setup model is shown in FIG. 3 (B). That is, it cannot be opened. Conversely, a setup model cannot be created from the open tooth model shown in FIG. 3 (B). This is because, as described above, since the tooth morphology varies from patient to patient, it is not possible to predict the tooth arrangement in the occlusal state from the open state, and it is not possible to set up a tooth model that is not engaged.

(2) Then, as another method, a method of reproducing two kinds of upper-lower relationship using a pair of upper and lower tooth models without using two upper tooth models is considered. In this case, as shown in FIG.
It is obtained in the same manner as in (A). However, when trying to reproduce the state at the time of opening, as shown in FIG.
It is necessary to open the upper jaw 5 of the articulator 100 itself.

As described above, the articulator 100 reproduces the motion of the human temporomandibular joint approximately or averagely, but does not faithfully reproduce the motion of the temporomandibular joint of each patient. For this reason, in the state shown in FIG. 4B, the cutting tool 6 is sandwiched between the lower dentition model and the upper dentition model, and A
Even if the mounting position of the block is to be finely adjusted, it cannot be adjusted so that the upper dentition model 4 is adapted to the cutting tool 6.

If adjustment is to be made, FIG.
As shown in (1), it is necessary to further fix a B block for correction on the A block. In this case, even if the relationship between the upper and lower jaws at the time of opening can be reproduced, since the B block for correction is fixed to the A block, in this A + B block, the upper jaw 5 of the articulator 100 is lowered. However, even if it is closed, the meshing state shown in FIG. 4A cannot be reproduced.

As is apparent from the above discussion, the currently used method cannot reproduce the two types of relation between the upper and lower jaws necessary for creating a tooth positioner on an articulator. Therefore, one object of the present invention is to use two kinds of cutting tools taken in the oral cavity of a patient to determine the two types of upper-lower jaw relations at the time of occlusal and opening required to create a tooth positioner. The purpose is to provide an auxiliary tool for reproduction on a vessel.

Another object of the present invention is to reproduce a plurality of upper-lower jaw relations of a patient on an articulator by using a bite having a different upper-lower relation between jaws taken in the oral cavity of the patient. It is an object of the present invention to provide a method of using an articulator that can be used and necessary assistive devices therefor. Another object of the present invention is to
An object of the present invention is to provide a method of mounting a dental model on an articulator, which can reproduce a plurality of types of relations between the upper and lower jaws of a patient on the articulator.

[0020]

According to the first aspect of the present invention,
A mounting aid used when mounting a tooth model on an articulator, comprising a main plate fixed to the tooth model, and a main plate positioned and attached to the main plate .
And can be removed from the main plate.
Attach the tooth model fixed to the in-plate to the mesher
A sub-plate for an auxiliary tool for the articulator, characterized in including it.

[0021]

According to a second aspect of the present invention, the main plate or the sub-plate includes a magnetic force generator, and the sub-plate or the main plate includes a member to be attracted by magnetic force. the sub plate is an auxiliary tool according to claim 1, wherein a connected state by the magnetic force is maintained.

The invention 請 Motomeko 3 described is a aid for mounting to be used when mounting the tooth form model into the articulator,
A first plate having a mounting surface for fixing to a tooth model with gypsum and a first connection surface on the opposite side, and a second connection surface capable of being connected to the first connection surface and an installation on which gypsum is mounted on the opposite side An auxiliary tool for an articulator, comprising: a second plate having a surface; and positioning means for positioning a connection relationship between the first plate and the second plate in a predetermined state.

According to a fourth aspect of the present invention, the positioning means comprises:
The auxiliary tool according to claim 3 , further comprising a fitting portion provided on the first plate and a fitted portion provided on the second plate and fitted with the fitting portion. The invention according to claim 5 is a mounting method for mounting a pair of upper and lower tooth models on an articulator, wherein one of the upper and lower tooth models is mounted on a predetermined mounting portion of an articulator. A mounting plate that is detachable with respect to the mounting portion is attached to a mounting portion of an articulator to which the other one of the pair of upper and lower tooth models is mounted. , The intermediate plate is fixed with gypsum, and the other tooth model is held in mesh with the one tooth model mounted on the articulator, and is engaged with the mounting plate mounted on the mounting portion of the articulator. Plaster is put between the intermediate plate fixed to the other tooth model held in a state, and a spacer member integrally fixed to the mounting plate and detachable from the intermediate plate is formed. And it is characterized in and.

According to a sixth aspect of the present invention, the intermediate plate includes a main plate attached to the other tooth model with gypsum, and an iron plate magnetically attracted to the main plate. 6. The mounting method according to claim 5 , wherein the iron plate is fixed integrally with the gypsum when the spacer member is formed by adding the metal plates. According to a seventh aspect of the present invention, in the mounting method according to the fifth or sixth aspect ,
Instead of holding either one of the tooth models in an engaged state with one of the tooth models, in the patient's mouth, the tooth rows of the upper and lower jaws were sampled with a predetermined open state. The present invention is characterized in that a pair of upper and lower tooth models are maintained in a predetermined opening state reproduced by the cutting tool using a cutting tool, and a spacer member in that state is formed.

According to the auxiliary tool of the present invention, when one of the other tooth models is mounted on the articulator, the spacer is mounted between the tooth model and the articulator with a predetermined thickness interposed therebetween. can do. Sub-plate (or second plate)
Having a sub-plate (or
The spacer member integrated with the two plates is detachable from a main plate (or a first plate) fixed to the tooth model. Also, the spacer member ,
Bu plate or 2nd plate is main plate or
When connected to the first plate, the positional relationship of Jo Tokoro
Mounting et al is. Therefore, the spacer member is always connected to the tooth model at a fixed position, and there is no fear that the position of the tooth model is shifted by using the spacer member.

A main plate (or a first plate)
The sub plates (or the second plates) are connected by, for example, a magnetic force or a mechanical connection mechanism. When a magnetic force is used, the connection between the tooth model and the spacer member is very simple, and the removal is easy. Even in the case of a mechanical coupling mechanism, the tooth model and the spacer member can be easily attached and detached by slightly rotating the tooth model and the spacer member.

According to the auxiliary tool according to the present invention or the mounting method according to the present invention, in the articulator,
The patient's tooth model can be reproduced in an engaged state and a predetermined open state. That is, by using the spacer member at the time of opening, the tooth model can be reproduced in a predetermined opening state. Further, if the spacer member is replaced with a spacer member at the time of engagement, the tooth model is reproduced in an engaged state.

Therefore, the teeth of the tooth model are cut off in the meshing state, and the teeth are re-arranged to prepare a setup model. The created setup model can be reproduced in a predetermined opening state. Therefore, a tooth positioner can be created based on the setup model reproduced in the open state.

[0030]

An embodiment of the present invention will be described below in detail with reference to the drawings. FIG.
(A) and (B) illustrate a method of mounting a tooth model on an articulator using an auxiliary tool according to an embodiment of the present invention.

First, the lower dentition model 7 is mounted on the lower jaw 8 of the articulator 100. After the mounting, the mounting position of the lower dentition model 7 is not changed, and the upper dentition model 4 is
Will be mounted. In the mounting of the upper dentition model 4, first, a D plate 9 (Dual Mounting Plate: a specific configuration of the D plate will be described later) is attached to the upper dentition model 4 with, for example, gypsum. A block in which the upper dentition model 4 and the D plate 9 are integrated with gypsum will be referred to as a C block hereinafter.

Next, using the bite at the time of occlusion (not shown; the bite can be reproduced without the bite) taken at the time of biting in the mouth of the patient, the articulator 1 is used.
Mount the C block at 00. For mounting, the mounting plate 11 is connected to the upper jaw 5 of the articulator.
To the lower jaw dentition model 7
Is performed by positioning the C block at a predetermined position, and filling gypsum between the positioned C block and the mounting plate 11, more specifically, between the D plate 9 and the mounting plate 11.
When the gypsum solidifies, the mounting plate 11 becomes integral with the gypsum. This integrated block,
It will be referred to as an S1 block. It can be said that the S1 block functions as a spacer attached between the D plate 9 and the upper jaw 5 of the articulator when the lower dental arch model 7 is in the occlusal state.

When the D plate is used, the S1 block above the D plate can be removed from the D plate. Next, from the reproduction state of the relationship between the upper and lower jaws at the time of the engagement created as described above (the state of FIG. 5A),
Remove C block and S1 block. As described above, the C block including the D plate 9 is removable from the S1 block. The S1 plate including the mounting plate 11 is detachable from the upper jaw 5 of the articulator 100.

The reproduction at the time of opening will be described below. The C block is mounted on the same articulator 100 using the opening bit 6 taken at the time of opening in the patient's mouth. Specifically, a mounting plate 12 is attached to the upper jaw 5 of the articulator 100 (this mounting plate 12
This is another plate (the same model) as the mounting plate 11 used in (A). ) Is mounted, the upper dental model 4, that is, the C block is positioned at a predetermined position with respect to the lower dental model 7 by using the opening bite 6,
Block D plate 9 and mounting plate 12
Placing plaster between them to make an S2 block. The S2 block is integrated with the mounting plate 12,
It is detachable from the D plate 9. The S2 block is
When the lower dentition model 7 is in the open state, it can be said that it functions as a spacer attached between the D plate 9 and the upper jaw 5 of the articulator 100.

As described above, the C block, the S1 block, and the S2 block are created. The C block is used for two types of mounting: at the time of occlusion and at the time of opening.
Since the S1 block and the S2 block are the same, by replacing the S1 block and the S2 block, the pair of upper and lower jaw tooth models 4, 7 on the articulator 100 in the same or the same state (setting) are set.
Thus, two types of relationship between the upper and lower jaws can be reproduced.

When setting up, the C block is combined with the S1 block and mounted on the articulator 100 to reproduce the relation between the upper and lower jaws during occlusion. And after the setup is completed,
The set-up C block can now be combined with the S2 block and attached to the articulator 100 to create a tooth positioner.

Next, the D plate will be described. FIG. 6 is a perspective view showing an example of the D plate, in which an upper dentition model 4 and an S block (S1 block or S2 block) are shown by dashed lines for reference. The D plate is a main plate 2 fixed to the maxillary dentition model 4.
1 and an auxiliary plate 22 fixed to the S block. The main plate 21 is provided with a thin plate on a disk formed of, for example, resin, and the upper dental model 4 is fixed to the lower surface thereof. Upper surface 2 of main plate 21
A projection 24 for positioning is formed on 3. In addition, a magnet piece 25 is disposed, for example, at a substantially central portion of the upper surface 23. In this embodiment, the enclosure 2 surrounding the magnet piece 25
6 are formed on the upper surface 23, and projections 24
Is overhanging.

The projection 24 is a projection for positioning, and is a gypsum (S) placed on the upper surface 23 of the main plate 21.
The outer surface of the projection 24 is a smooth convex curved surface so that the gypsum forming the block does not come off the projection 24. Further, the upper surface 23 of the main plate 21
Also, when plastered to form the S block,
To prevent the plaster from coming off the top surface 23,
Its surface is finished to a smooth surface.

The auxiliary plate 22 includes a contact surface 31 and four small buried pieces 32 protruding from the contact surface 31 in all directions. (Stainless steel plate). Auxiliary plate 22 fixed to the S block and becoming a part of the S block
The lower surface of the contact surface 31 is exposed so as to be in contact with the upper surfaces of the magnet piece 25 and the enclosure 26, but the embedded piece 32
It will be buried in the plaster of the block.

FIG. 7 is a sectional view of the main plate 21 and the auxiliary plate 22 along the line AA in FIG. FIG. 7 shows a state in which the auxiliary plate 22 is in contact with the main plate 21. Lower surface 27 of main plate 21
Are formed with a plurality of holes 28 so that the plaster firmly adheres to the main plate 21 when the upper dental arch model is fixed with plaster. Hole 28 is preferably an undercut hole. Instead of forming the hole 28, the surface of the lower surface 27 may be roughened, or a projection may be formed on the surface of the lower surface 27 so that the gypsum can be easily fixed.

Inside the enclosure 26, a metal dish 29, for example, made of a cylinder, is arranged along the inner peripheral surface of the enclosure 26, and the magnet piece 25 is installed in the metal body 29. The metal body 29 and the magnet piece 25 are bonded to each other with, for example, an adhesive, and the metal body 29 is bonded to the main plate 21. The auxiliary plate 22 has a size such that the contact surface 31 covers at least the periphery of the magnet piece 25, that is, the upper edge of the metal body 29. By doing so, even if the gap 30 exists on the upper surface of the magnet piece 25, it is possible to prevent the gypsum from entering the gap 30 when the gypsum is piled up for forming the S block.

The main plate 21 may be formed of ceramic or metal instead of resin. 8A, 8B, and 8C show a configuration example of a D plate according to another embodiment. The D plate shown in FIG. 8 is formed thinner. The advantage of thinning is that it can be used well regardless of the type of articulator.

The D plate is a main plate 41
And a magnet piece 45 detachable from the main plate 41 and a metal plate 42 acting as an auxiliary plate. Referring to FIG. 8A, a main plate 41 and a plurality of (for example, four) positioning projections 44 projecting from upper surface 43 of main plate 41 are provided on D plate.
And a magnet piece burying hole 46 of a magnet piece 45 formed substantially at the center of the main plate 41. The burial hole 4
A metal plate 47 is disposed on the bottom surface of 6. Further, a hook 48 used for attaching a tooth model is protruded from an outer peripheral edge of the main plate 41.

Referring to FIGS. 8B and 8C, undercut 47 is preferably provided on lower surface 47 of main plate 41 so that gypsum is firmly fixed when plaster is adhered to lower surface 49. A plurality of holes 50 (four in this embodiment) are formed. The lower surface of the metal plate 47 is flush with the lower surface 49 of the main plate 41. Also in this main plate 41, it is preferable that the lower surface 47 is rough finished and the upper surface 43 is smooth finished.

Metal plate 42 functioning as auxiliary plate
Has a size that completely covers the magnet piece burying hole 46. Therefore, when plaster is piled on the upper surface 43 of the main plate 41, plaster does not enter the holes 46. Also,
At the four corners of the metal piece 42, engaging pieces 42 embedded in gypsum
1 is formed. When using such a D plate,
The magnet piece 45 is removable and can be used repeatedly. That is, only the main plate 41 and the metal piece 42 need to be made disposable, and the configuration can be made at a low cost.

FIG. 9 shows a configuration example of a D plate according to still another embodiment of the present invention. The D plate shown in FIG. 9 employs a configuration in which the main plate and the auxiliary plate are not mechanically attached to each other but are fitted mechanically. That is, the main plate 51 is a disk-shaped thin plate made of, for example, resin, ceramic, metal, or the like, and has engagement recesses 52 projecting from four sides from the periphery thereof. In this embodiment, the positioning protrusion is not formed on the upper surface 53 of the main plate 51, but is a flat surface.

The auxiliary plate 54 is a disk-shaped thin plate made of, for example, resin, ceramic, or metal, and its planar shape substantially matches the main plate 51. On the periphery of the auxiliary plate 54, engagement protrusions 55 are provided at positions corresponding to the engagement recesses 52 formed on the periphery of the main plate 51.
Are formed. The lower surface of the auxiliary plate 54 is a flat surface so as to be in close contact with the upper surface 53 of the main plate 51.

The upper plate 53 of the main plate 51 and the auxiliary plate 54
The engaging projections 55 enter the engaging recesses 52 and are fixed in position by bringing the lower surfaces of the engaging members into contact with each other and twisting the positions thereof relatively in that state. The engagement recesses 52 and the projections 55 project outward from the lower surface of the main plate 51 on which the gypsum is piled and the upper surface 56 of the auxiliary plate 54. Convex part 55
However, there is no need to worry about being buried with plaster.

The lower surface of the main plate 51 and the upper surface 56 of the auxiliary plate 54 are preferably roughened, formed with holes, or formed with projections in order to improve the adhesion of the plaster to be laid. In this embodiment, an example is shown in which four pairs of the engagement recesses 52 and the engagement protrusions 55 are provided, but the main plate 51 and the auxiliary plate 5
It suffices if the number of pairs required for engagement of the four, that is, at least two pairs or more.

The engaging recess 52 may have a continuous shape extending along the periphery of the main plate 51. The point is that the main plate 51 and the auxiliary plate 54
The main plate 51 and the auxiliary plate 54 need only be provided with a fitting pair that is positioned and fixed when they are brought into contact with each other.

FIG. 10 shows a configuration example of a D plate according to still another embodiment of the present invention. The D plate shown in FIG. 10 has a main plate 61 and an auxiliary plate 62 formed of, for example, resin, ceramic or metal, as in FIG. The main plate 61 and the auxiliary plate 62 have substantially the same planar shape.
The upper surface of the main plate 61 and the lower surface of the auxiliary plate 62 are in close contact with each other. Further, when they are in close contact with each other, a projection 63 is formed on the opposing surface of one plate and a recess 64 is formed on the opposing surface of the other plate in order to determine the relative positional relationship between the main plate 61 and the auxiliary plate 62. ing.

Main plate 61 and auxiliary plate 6
A pair of fixing protruding pieces 65 and 66 are provided on the periphery of the second protruding part. The protruding piece 65 and the protruding piece 66 are provided at positions corresponding to each other, and the two come into contact with each other. In this embodiment, the projecting pieces 65, 66
Is provided. The main plate 61 and the auxiliary plate 62 are attached by sandwiching the pair of projecting pieces 65 and 66 with the clip 67.

In this embodiment, the lower surface 68 of the main plate 61 may be provided with a projection 69 or a hole 70 for firmly fixing the plaster plaster.
Similarly, projections 72 and holes 73 for firmly attaching gypsum may be formed on the upper surface 71 of the auxiliary plate 62. As described above, some embodiments of the D plate have been specifically described. However, the D plate according to the present invention is not limited to each of the above embodiments, and is specified by the configuration of the scope of the claims. Various modifications are possible.

Also, the method of use according to the present invention is limited only to the contents described in the claims, and is not limited to the contents described in the embodiments.

[0055]

According to the present invention, the relationship between the upper and lower jaws of a patient can be faithfully reproduced on an articulator, and this contributes to the creation of a tooth positioner that is well suited to the mouth of a patient. Further, according to the present invention, a plurality of upper and lower jaw relations of a patient can be reproduced on an articulator by a pair of upper and lower tooth models, and an assisting tool for an articulator useful for dental clinic is provided. be able to.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of a known tooth positioner.

FIG. 2 is an illustrative view showing a state where the tooth positioner is attached to a mouth of a patient.

FIG. 3 is a diagram showing a state in which two identical models of the upper dentition are prepared and mounted in a state in which they are engaged with an articulator and in an open state.

FIG. 4 is a diagram for explaining a method of reproducing two types of upper-lower relations using a pair of upper and lower dentition models.

FIG. 5 is a diagram for explaining a method of mounting a dental model on an articulator using an auxiliary tool according to an embodiment of the present invention.

FIG. 6 is a perspective view showing an example of a D plate according to one embodiment of the present invention.

FIG. 7 is a sectional view taken along the line AA of FIG. 6;

FIG. 8 is a diagram showing a configuration example of a D plate according to another embodiment of the present invention.

FIG. 9 is a diagram showing a configuration example of a D plate according to still another embodiment of the present invention.

FIG. 10 is a diagram showing a configuration example of a D plate according to still another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 4 Upper dental model 5 Upper jaw of articulator 6 Opening bit 7 Lower jaw dental model 8 Lower jaw of articulator 9 D plate 10 Occlusion bit 11 Mounting plate 12 Upper mounting plate 21, 41, 51, 61 Main plate 22 , 54, 62 Auxiliary plates 23, 43 Upper surface 24 Positioning protrusions 25 Magnet piece 28 Hole 31 Contact surface 42 Metal plate (auxiliary plate) 44 Positioning protrusion 45 Magnet piece 47 Metal plate 52 Engagement recess 55 Engagement protrusion 63 Projection 64 Recess 65, 66 Protrusion 67 Clip

Claims (7)

(57) [Claims] 1. A mounting aid used when mounting a tooth model on an articulator, comprising: a main plate fixed to the tooth model; and a positioning and mounting method with respect to the main plate . Or
Can be removed from the main plate.
Aid for the articulator and <br/> sub-plate for mounting a tooth-type model, which is secured to the rate the meshing device, characterized in including it. 2. The main plate or the sub-plate includes a magnetic force generator, and the sub-plate or the main plate includes a member to be attracted by a magnetic force. aid according to claim 1, characterized in that the coupling state is maintained in. 3. A mounting aid used for mounting a tooth model on an articulator, comprising a mounting surface for fixing to the tooth model with gypsum and a first connecting surface on the opposite side. A first plate having a second connection surface that can be connected to the first connection surface and a second plate having a mounting surface on which gypsum is placed on the opposite side; and a predetermined connection relationship between the first plate and the second plate. Positioning means for positioning in the state. Wherein the positioning means includes a fitting portion provided in the first plate, provided in the second plate, according to claim 3, characterized in that it comprises a fitted portion to be fitted to the fitting portion The described aid. 5. A mounting method in which a pair of upper and lower tooth models are mounted on an articulator, wherein one of the upper and lower tooth models is mounted on a predetermined mounting portion of the articulator. A mounting plate detachable with respect to the mounting portion of the articulator for mounting any one of the pair of upper and lower tooth model models, and an intermediate plate mounted on one of the other tooth model models; Is fixed with gypsum, and the other tooth model is held in mesh with the one tooth model mounted on the articulator, and held in a state meshed with the mounting plate mounted on the mounting portion of the articulator. Placing gypsum between the intermediate plate fixed to the other tooth model and forming a spacer member integrally fixed to the mounting plate and detachable from the intermediate plate. How to wear 6. The intermediate plate includes a main plate attached to the other tooth model with gypsum, and an iron plate attracted to the main plate by magnetic force. 6. The method according to claim 5 , wherein the iron plate is fixed integrally with the gypsum when forming. 7. A mounting method according to claim 5 or 6, wherein, instead of the other one of the tooth-type model to hold the state engagement against one of the teeth-type model, in the patient's mouth A pair of upper and lower tooth models are kept in a predetermined opening state reproduced by the cutting tool by using a bite taken with the teeth of the upper and lower jaws in a predetermined opening state, and the spacer member in that state is maintained. Forming a method.