WO2016152864A1

WO2016152864A1 - Dental articulator

Info

Publication number: WO2016152864A1
Application number: PCT/JP2016/059014
Authority: WO
Inventors: 尚之玉利
Original assignee: 幸和商事株式会社
Priority date: 2015-03-26
Filing date: 2016-03-22
Publication date: 2016-09-29
Also published as: JP2016182285A; JP6407782B2

Abstract

An articulator comprising: a mandible model attachment base 1; lower support arms 2 provided at left and right ends of a rear portion of the attachment base; a pivot rod 5 provided perpendicular to the mandible model attachment base, to the rear of the lower support arms 2 and in a central position in the left-right direction; a fixed surface plate 4 provided suspended between the lower support arms 2; a pivoting plate 6 placed on the upper surface of the fixed surface plate and capable of pivoting around an axial center line 5c of the pivot rod 5; upper support arms 7 installed vertically at left and right ends of the pivoting plate; and a maxilla model attachment frame 8 attached between the upper ends of the left and right upper support arms 7.

Description

Dental articulator

The present invention relates to an articulator used for the production and restoration of dentures for dental treatment.

It is said that the ideal occlusal height of human beings will be completed around the age of 24 to 26, when permanent teeth have grown since childhood. As seen in Figure 15, this on the extension of the occlusal surfaces of the upper and lower teeth in an ideal occlusion, median ring axis joint at the top of the spine (articulatio atlantoaxialis mediana) is adapted to have M _S.
However, after that age, the teeth wear over time due to meals, bruxism, squeezing, tooth extraction, etc., and the medial atlantoaxial joint (axial dentate and ring vertebrae below or above the extension of the occlusal surface of the teeth) a joint) M _S so that comes in between. In other words, a state where extended surface comes occlusal above or below the median ring axis joint M _S. When this happens, the closing muscles of the masticatory muscles become shorter in the vertical direction. This is called `` low occlusion ''. If this lower occlusion is used, undefined complaints and poor posture such as cat back and poor posture, cervical spondylosis, myelopathy, glaucoma, upper limb numbness, shoulder stiffness, headache, hypertension Diabetes, diabetes, asthma, temporomandibular joint pain, periodontal disease, snoring and otolaryngopathy are said to have been induced. This “low bite” should be treated, but there has been little treatment to improve “low bite”.

A conventional articulator includes a lower jaw model mounting base for mounting a lower jaw model with a lower denture attached to the center upper side, as known in Patent Document 1, and an upper jaw model mounting frame for mounting an upper jaw model with an upper denture attached to the lower center. Have The upper jaw model mounting frame is disposed above the lower jaw model mounting base, and the upper jaw model mounting frame is pivotally supported around a horizontal axis at the base of the frame. The shaft support portion is supported by the tops of a pair of left and right columns that are erected at the rear of the lower jaw model mounting base. With this rotation around the shaft support, the dentures of the lower jaw model and the upper jaw model open and close and simultaneously engage. Further, the front end side of the upper jaw model mounting frame is supported. A vertical incisal pin is attached to the distal end portion of the upper jaw model mounting frame, and the incisal pin is fixed at a predetermined height with a fixing screw attached to the distal end portion. As a result, the upper jaw model mounting frame can be held substantially horizontally.

This conventional articulator for the production and restoration of dentures is based on a mandibular model in which the human lower jaw moves around the temporomandibular joint, and the upper jaw model is relatively around the pivot axis corresponding to the temporomandibular joint. Rotate. This simulates the structure of opening and closing of a human mouth and biting of teeth. The art of this conventional articulator is disclosed in

Patent Documents

1 and 2.

The present inventor considers that the upper and lower occlusions of the teeth use the muscular strength of the jaw to bring the lower jaw (lower denture) closer to the upper jaw and cause the lower denture to occlude the upper upper denture. Furthermore, in the articulator, it is considered that making the upper jaw freely rotatable (raising and lowering) about a support shaft of a horizontal shaft corresponding to the temporomandibular joint reproduces human bite. However, the left-right direction of the bite combined (lateral movement) of the lower jaw, not the jaw joint M _G around shown in FIG. 15, but which is around the human median ring axis joint M _S. Therefore, in the conventional articulator, the biting of the left and right slides of the lower jaw has not been the production / restoration of a denture considering human biting.

On the other hand, setting the occlusal plane P of the tooth to the median ring axis joint M _S center, the structure of the articulator to and pivot is contoured around a horizontal pivot shaft with the upper jaw model articulator to the surface level of the occlusal surface , Cited document 3. The present invention references 3 is a structure in which the movement of the left and right horizontal swing with rotation of the upper and lower around the median ring axis joint M _S.
However, (when chewing adding things) the upper and lower bite mating of the upper and lower teeth is rotated about temporomandibular joint M _G powerful jaws strength mandible (closed), biting combined with bite combined force of the teeth (occlusal force ) Is the human structure. Upper and lower occlusal combined upper and lower teeth and set above and below the bite median ring axis joint M _S around to fit the tooth becomes that unlike human structure, which is assumed to not be combined bite correct denture.

The present inventor said that the mouth closing movement when biting food with teeth is the movement of the lower jaw around the temporomandibular joint, and then the opening movement and lateral movement of the mouth (movement that moves the lower jaw in the horizontal and lateral directions). , Understand that it moves around the midline annulus joint. Therefore, the articulator can be moved around two axes whose rotation direction is different from the two rotation center positions of the rotation around the jaw joint of the closed bite, the opening around the midline annulus joint, and the left-right rotation movement. The inventors have reached the knowledge that the movement around the two axes is closer to a human bite model, and the present invention has been achieved.

JP 2004-113398 A Japanese Patent No. 3579793 Special table 2013-521097 gazette

The problem to be solved by the present invention is to solve the problem in the articulator which can be raised and lowered around a conventional spindle corresponding to the temporomandibular joint, and to move the lower teeth of the lower jaw to the left and right (side movement) It is an object of the present invention to provide an articulator capable of accurately performing occlusion of teeth and treating teeth of low-order occlusion at the height of the center of the center axis of the median axis.

In the conventional articulator, the present inventor is able to determine the occlusal position (maxillary teeth) of the person's current occlusion (proper occlusion), whether it is a pathological state (low occlusion) or a healthy occlusion. The mandibular condylar movement in the temporomandibular joint was analyzed as much as possible without changing the vertical distance of the mandibular occlusion. This attempted to reflect these movements on the chewing occlusal surface.
The articulator according to the present invention first raises the occlusal position in a pathological state (bite raising, bite reconstruction, bite raising), and leads to a state that is as healthy as possible systemically.・ Movement of maxilla can be reproduced on articulator. In addition, it is not raised in the case of a healthy state in general, but it may be raised preventively.
In addition, the mandibular movement was applied to the upper jaw in addition to the viewpoint of the temporomandibular joint, and the cervical vertebra was also pointed out so that the articulator could be operated while standing on the whole body. In other words, the aim is to be able to perform treatment based on systemic medicine that takes into account posture control of motor nerves by stretching reflex of the masticatory muscles of the oral cavity and establishment of physiological homeostasis of autonomic nerves.

The configuration of the present invention that solves this problem is as follows.
(1) A mandibular model mounting base on which a lower jaw model to which a lower denture is attached is mounted on the center upper side;
An upper jaw model mounting frame to which an upper jaw model to which an upper denture is attached is attached to the center lower side, and an upper jaw model mounting frame in which the upper jaw model mounting frame is disposed above the lower jaw model mounting base;
It is a horizontal axis that can be rotated so as to undulate the entire frame back and forth at the rear position of the upper jaw model mounting frame, and the horizontal axis is provided on the upper part of the support arm that is erected at the rear position of the lower jaw model mounting base. A horizontal axis,
By rotating the upper jaw model mounting frame around the horizontal axis, a dental articulator that can open and close the dentition of the lower denture and the dentition of the upper denture,
The upper jaw model mounting frame can be swiveled at a position behind the horizontal axis position where the upper jaw model frame rotates, and around an axis that is in the center of the left and right sides of the upper jaw model frame and perpendicular to the installation surface of the lower jaw model mounting base. A dental articulator characterized by that.
(2) The dental articulator according to (1), wherein the length of the support arm is adjustable, and the height of the upper jaw model mounting frame can be corrected.
(3) The dental articulator according to (1),
A mandibular model mounting base in which a model mounting disk and a model fixing screw for mounting a mandibular model to which a denture dentition is mounted on the center upper side are provided at the center and a setting surface is defined by a plurality of legs;
A model mounting disk and a model fixing screw for mounting the upper jaw model, which is arranged above the lower jaw model mounting base and mounted with an upper denture dentition, on the lower side of the center, are provided at the center, and at the rear position thereof. An upper jaw model mounting frame provided with a horizontal axis that allows the entire frame to be swung back and forth, and
A pair of left and right lower support arms that are erected on the lower jaw model mounting base so as to extend upward on the left and right sides of the rear end, and
A swiveling rod that is erected so as to be perpendicular to the installation surface of the lower jaw model mounting base at a position between the left and right of the rear end of the lower jaw model mounting base and further rearward of the lower support arm;
A fixed face plate constructed between upper ends of the pair of left and right lower support arms and having an upper surface parallel to an installation surface of the lower jaw model mounting base;
A swivel plate having a lower surface in surface contact with the upper surface of the fixed face plate and having a fitting hole into which the swivel shaft rod is inserted and rotating around the swivel axis rod while being in surface contact with the upper surface of the fixed face plate;
A pair of left and right upper support arms erected so as to extend upward to the left and right of both ends of the swivel plate, which are a predetermined distance ahead of the vertical axis of the swivel rod;
A pivotal support for pivotally supporting a horizontal axis provided at the rear end of the upper jaw model mounting frame at the upper ends of the left and right upper support arms;
A dental articulator comprising an incisal pin with a fixing screw at a front end portion of the upper jaw model mounting frame.
(4) The dental articulator according to (3), wherein the height of the shaft support portion that supports the rotating horizontal shaft of the upper jaw model mounting frame is adjustable.
(5) A hard transparent plastic plate with a small thickness is detachably sandwiched between the fixed face plate and the swivel plate so that the front end face is supported in the middle of an incisal pin with a fixed screw. The dental articulator according to (3) or (4), wherein the occlusal surface can be clearly indicated by a plate.
(6) A spacer fixed to any one of the plates is detachably mounted between the fixed face plate and the swivel plate, and the swivel plate has a facing surface between the spacer and the fixed face plate or swivel plate facing the spacer as a sliding surface. The dental articulator according to any one of (3) to (5), wherein the left and right can be turned horizontally.
(7) Two upper and lower spacers fixed to the plate above and below the swivel plate are detachably attached to the plate so that the opposing surfaces of the upper and lower spacers can be swung horizontally from side to side. The dental articulator according to any one of (3) to (5).
(8) A facing surface between the plate and the spacer is used as a sliding surface, and a thin transparent plastic plate with a small thickness is detachably sandwiched between the facing surfaces, and the front end surface is an incisal with a fixing screw. The dental articulator according to (6), which is supported in the middle of the pin.
(9) The opposing surfaces of the two upper and lower spacers are made to be sliding surfaces, and a thin transparent transparent plastic plate is detachably sandwiched between the opposing surfaces, and the front end surface of the incisal pin with a fixing screw is inserted. The dental articulator according to (7), which is supported in the middle.

According to the present invention, as shown in FIGS. 1, 7, 8, and 11, the upper jaw model mounting frame rotates around a horizontal axis disposed at a high position behind the occlusal surface and undulates in the front-rear direction. The mouth can be closed (biting with the upper and lower dentures). Since this horizontal axis serves as a temporomandibular joint, the upper and lower teeth can be bitten by rotation at the temporomandibular joint, so that the vertical bite of the teeth is relatively the same as the movement of the human lower jaw. Therefore, according to the present invention, a natural denture with a natural upper and lower bite can be manufactured and restored.

As shown in FIGS. 5 and 10, in the present invention, the upper jaw model mounting frame can rotate the occlusal surface in the horizontal left and right directions around the vertical swivel axis bar at a position lower than the horizontal axis and behind. it can. Since the upper tooth (maxillary) model can be swung horizontally to the left and right along the occlusal surface by ± 8 °, the left and right occlusion of the upper and lower teeth can be adjusted. This rotation about the pivot axis can be approximated to the horizontal left-right rotation of the jaw near the human midline annulus joint.

Therefore, according to the present invention, as shown in FIGS. 1 and 11, a vertical rotation that undulates in the front-rear direction in the vicinity of the horizontal axis corresponding to the temporomandibular joint, The upper jaw model can be rotated up and down and left and right by moving around two rotation axes that are composed of two horizontal rotation directions and different front and rear positions of the shaft. As a result, in addition to the meshing of the upper and lower teeth, the adjustment operation of the meshing of the left and right swinging teeth can be performed accurately. In addition, the left and right rotations in the ideal occlusal position can be adjusted so that the upper and lower occlusion of the dentures on the occlusal surface can be adjusted so that the correct occlusal denture closer to the human teeth and jaw structure can be obtained. Made possible to make and repair.

In the present invention, if the height (length) of the upper and lower support arms can be adjusted as shown in FIG. 12, the upper and lower jaw models can be attached, and the vertical height and occlusal positions of the jaw models can be adjusted. Even if there are manufacturing errors and mounting errors, they can be eliminated considerably and can be made easy to use. Furthermore, by adjusting the height, it is possible to manufacture and restore dentures by reproducing the meshing in the normal position (up and down position of non-compression) of the compressed state (cervical vertebra compression) of the medial atlantoaxial joint To.

¡According to the feature that a thin transparent plastic plate is detachably sandwiched between the fixed face plate and the swivel plate, the occlusal surface can be accurately recognized, so that the jaw model can be quickly mounted at the correct height. In addition, the occlusal state of the dentition and teeth can be seen well, and accurate production and restoration of a denture can be facilitated. Here, the thin thickness of the transparent plastic plate means a thickness of at least 2 mm. The thickness is preferably 1 mm or less.

FIG. 1 is a side view showing a dental articulator according to an embodiment. FIG. 2 is a front view of the embodiment. FIG. 3 is a rear view of the embodiment. FIG. 4 is a plan view of the embodiment. FIG. 5 is an explanatory view showing left and right turning of the upper jaw model mounting frame of the embodiment. FIG. 6 is a side view showing a state where the occlusal surface transparent plate of the embodiment is attached. FIG. 7 is a side view showing a state where the upper jaw model mounting frame of the embodiment is lifted upward. FIG. 8 is an explanatory view showing the biting direction with respect to the lower jaw model of the upper jaw model. FIG. 9 is a plan view showing the occlusal surface transparent plate. FIG. 10 is an explanatory diagram showing a turning state of the upper jaw model along the upper surface of the occlusal surface transparent plate. FIG. 11 is a side view showing a state where the upper and lower jaw models of the embodiment are attached. FIG. 12 is an explanatory diagram showing a structural example in which the height of the upper support arm can be adjusted. It is explanatory drawing which shows the example which adjusts height using a spacer. It is explanatory drawing which shows the example which adjusts height using a spacer. It is explanatory drawing which shows the example which adjusts height using a spacer. FIG. 14 is a perspective view of the spacer. Figure 15 is an explanatory view showing a position of human temporomandibular joint M _G and median ring axis joint M _S.

The distance L in the front-rear direction between the jaw opening / closing axis that is the center of undulation of the upper jaw model of the present invention and the turning center axis corresponds to the distance in the front-rear direction of the human temporomandibular joint and the mid-axis joint. Although this distance varies between men's age and gender, a practical interval of about 5 to 8 mm is preferable. Further, the height difference H of the jaw opening / closing axis from the turning surface corresponds to the height difference of the human temporomandibular joint and the mid-annular joint, and is preferably about 20 to 24 mm.

Rotation of the upper jaw model mounting frame of the present invention is not limited to a structure in which the fixed face plate and the turning plate are brought into surface contact and the turning plate can be turned freely as in the embodiment. It is also possible to adopt a structure in which a vertical axis is erected on the installation surface of the lower jaw model mounting base, and an upper jaw model mounting frame is mounted on the vertical axis so as to be horizontally rotatable parallel to the installation surface.

The height of the occlusal surface can be adjusted in units of 1 or 0.5 mm if the spacer of the present invention has a thickness of 1 mm to 10 mm on the sliding surface.

Hereinafter, embodiments of the present invention will be described with reference to the drawings of FIGS. In this embodiment, a fixed face plate is provided above the rear part of the lower jaw model mounting base. A swivel plate is provided which is surface-contacted on the face plate and is pivotably mounted around a vertical swivel shaft provided behind. The upper jaw model mounting frame is provided to be rotatable up and down so that the upper jaw model mounting frame undulates above the swivel plate. A horizontal axis (jaw opening / closing axis) for raising and lowering the upper jaw model mounting frame is disposed in front of a distance L (6.5 mm) from the axis of the pivot shaft. The height H of this axis (jaw opening / closing axis) is about 22.5 mm above the occlusal surface of the upper teeth of the upper jaw model and the lower teeth of the lower jaw model. The jaw opening / closing axis of the present embodiment corresponds to a human temporomandibular joint, and the position of the occlusal surface height of the rear pivot axis rod corresponds to the human midline annulus.

In the figure, G is the dental articulator of the embodiment,
1 is a metal lower jaw model mounting base,
1a is a leg that holds the lower jaw model mounting base parallel to the surface of the mounting table of the dental articulator G;
Lower jaw model mounting disk to attach the lower jaw model M ₁ is 1b,
1c is a model fixing screw for fixing the lower jaw model M ₁ on the upper surface of the lower jaw model mounting disc 1b,
2 is a lower support arm extending upward and provided on each of the left and right ends of the rear part of the lower jaw model mounting base 1;
3 is a lower swivel shaft holding part provided so as to protrude horizontally from the rear edge of the lower jaw model mounting base 1 toward the rear,
4 is a fixed face plate provided on the upper edge of the lower support arm 2 so as to protrude horizontally rearward;
5 is a swivel axis bar vertically installed between the upper and lower sides of the lower swivel axis bar holding part 3 and the fixed face plate 4 and at the left and right intermediate positions;
5a is a fitting hole for fitting and fixing the lower part of the pivot shaft 5 to the lower pivot shaft holder 3;
5b is an insertion hole provided in the fixed face plate 4 that penetrates the upper part of the pivot shaft 5 upward;
Reference numeral 5 c denotes a vertical axis of the swivel shaft 5.

6 is mounted on the upper surface of the fixed face plate 4 and is a slender swivel that is elongated to the left and right in the same plane as the revolving plate 6 that revolves around the axis 5c of the revolving shaft rod 5 along the upper surface.
Reference numeral 6a denotes a fitting hole for inserting the swivel shaft bar 5 provided in the swivel plate 6, and has a play of a hole in which the inner diameter is slightly larger than the outer diameter of the swivel shaft bar 5 and the swivel plate 6 is slightly tilted back and forth.
7 is an upper support arm extending upward provided on each of the left and right sides of the revolving plate 6;
7a is a jaw opening / closing axis extending horizontally in the left-right direction provided on the upper inner side of the support arm 7;
7b is a shaft end sphere provided at the tip of the same jaw opening and closing shaft 7a;
8 upper jaw model mounting frame the upper jaw model mounting disc 8c attaching the upper jaw model M ₂ is attached to the lower center,
8a is a frame base of the upper jaw model mounting frame,
8b is a sphere seat for receiving the shaft end sphere 7b of the jaw opening / closing shaft 7a provided on each of the left and right sides of the frame base,
8c is the upper jaw model mounting disk,
8d is model fixing screw for fixing the upper jaw model M ₂ in the upper jaw model mounting disc 8c,
8e is an incisal pin insertion hole to be attached to the front end of the upper jaw model mounting frame 8,
8f is an incisal pin fixing screw for fixing the incisal pin 9 inserted into the insertion hole.

9 is the insisal pin,
9a is a support ring capable of adjusting the vertical height of the front end portion of the occlusal surface transparent plate 11 fixed to the position of the occlusal surface height of the insisal pin;
10 is an incisal table for receiving the lower end of the incisal pin 9 at the front end of the lower jaw model mounting base 1;
11 is an occlusal surface transparent plate which is a hard plastic plate having a thickness of about 1 mm for indicating the occlusal surface of the tooth,
11a is a swiveling shaft rod insertion groove for insertion into the swiveling shaft rod 5 provided in the center of the rear part of the occlusal surface transparent plate 11.
11b is an arc-shaped incisal pin insertion groove provided to be inserted into the incisal pin 9 provided in the front portion of the occlusal surface transparent plate.

The lower support arm 12x can adjust the height of the lower support arm 2 shown in FIG.
12x ₁ fixing screw shaft which is erected on the rear of the lower jaw model mounting base 1,
12x ₂ fixed screw shaft is and screw direction on the same axis of the fixing screw shaft 12x ₁ was vertically at the bottom of the lower support arm 12x and conversely,
Turnbuckle 12x ₃ is capable of rotating screwed with the upper and lower opposing fixing screw shaft _12x 1, _12x _2,
12x ₄ is rotating control panel which is fixed to the turn buckle,
12x ₅ is the height scale plate to measure the height.
M ₁ is a lower jaw model, M ₁ a is a lower denture, M ₂ is an upper jaw model, and M ₂ a is an upper denture.

In this embodiment, a physician-technician conventionally are measured with take-toothed patient, to produce a lower jaw model M ₁ and the upper jaw model M ₂ having a faithful dentition of the patient. It is transferred to the articulator G in a state of bite raising using an anterior jig in the oral cavity. At this time, the mandibular condyle is moving forward and downward in the temporomandibular joint. The opened state is transferred to the articulator G. While taking normal mandibular condylar movement over time, check that the condylar head moves to the left and right evenly while occlusal guidance.
Next, the lower jaw model M ₁ manufactured so as to fit the pins projecting on the lower jaw model mounting disc 1b, placing and positioning. The model fixing screw 1c below is turned and fixed. Similarly the upper jaw model M _2, and positioned pins fitted into the upper jaw model mounting disc 8c of the upper jaw model mounting frame 8, attached to, and is fixed by turning the model fixing screw 8d thereabove.

Next, the incisal pin 9 is inserted into the incisal pin insertion hole 8e at the front end portion of the upper jaw model mounting frame 8, the tip of the incisal pin 9 is applied to the lower incisal table 10, and a predetermined pin length is obtained. In position, the insisal pin fixing screw 8f is turned and fixed.
At this time, the lower jaw model M ₁ , M so that the surface connecting the support ring 9a attached in the middle of the incisal pin 9 and the upper surface of the swivel plate 6 becomes the occlusal surface P of the upper and lower dentures M ₁ a, M ₂ a. adjusting the dimensions and the fixed position of the upper jaw model M _2. It is preferable that the support ring 9 a can be held at an arbitrary position in the middle position of the insisal pin 9. As a method of holding at an arbitrary height position, the support ring 9a is made of rubber and is pressed against the insisal pin 9 to hold the position. When a strong force is applied in the axial direction, the holding height can be changed. Alternatively, a fixing screw may be attached to the support ring 9a.

Thus, when fixing the lower jaw model M ₁ and the upper jaw model M _2, the upper jaw model M ₂ is vertically moved to rotate about a horizontal jaw control shaft 7a. The rotation of the jaw opening / closing shaft 7a is performed by supporting the shaft end sphere 7b (FIG. 3) provided at the tip of the horizontal jaw opening / closing shaft 7a by the sphere seat 8b of the frame base 8a so that the upper jaw model mounting frame 8 can be raised and lowered. Rotate to. Since the jaw opening and closing shaft 7a corresponds to the jaw joint, it is possible to rotate the upper jaw model M ₂ around the temporomandibular joint, the human mandible corresponds to moving around the jaw joint, the bite combined state of the upper and lower human teeth Become. Therefore, the dentures M ₁ a and M ₂ a are processed and adjusted so that the bite is good.

When the upper jaw model mounting frame 7 is rotated around the pivot shaft 5 located behind the jaw opening / closing shaft 7a so that the lower surface of the pivot plate 6 slides on the upper surface of the fixed face plate 4, as shown in FIG. M ₂ is swung from side to side by ± 8 ° along the horizontal plane. As a result, the occlusal state of the left and right horizontal swing between the upper denture M ₂ a and the lower denture M ₁ a can be clearly understood, and the dentures M ₁ a and M ₂ a can be favorably left and right horizontally swung. The dentures M ₁ a and M ₂ a can be processed and corrected easily and quickly.

Next, the occlusal surface transparent plate 11 will be described. The occlusal transparent plate 11 is sandwiched between the fixed face plate 4 and the swivel plate 6. The swivel shaft rod is inserted into the swivel shaft rod insertion groove 11 a so as to be inserted into the swivel shaft rod 5. The occlusal surface transparent plate 11 is rotated at a position where the pivot shaft 5 is inserted to the depth of the pivot shaft insertion groove 11a. The vertical incisal pin 9 is inserted into the incisal pin insertion groove 11b provided at the distal end portion of the occlusal surface transparent plate 11, and the insertion is stopped at the far end. At this position, the occlusal surface transparent plate 11 is held parallel to the installation surface locked on the support ring 9a. Since the occlusal surface transparent plate 11 is transparent, the state of the lower denture M ₁ a of the lower jaw model M ₁ can be understood, and the occlusal state with the upper jaw model M ₂ can be easily understood through the occlusal surface transparent plate 11. This makes it easy to adjust the fixed position and height. Occlusion can be performed as usual without using the occlusal surface transparent plate 11.

The procedure for mounting the impression model (upper and lower dentition abutments) on the articulator accurately will be described.
Confirm that the systemic symptoms have improved in a temporary crown that has been raised over a period of time. Thereafter, it is further confirmed by a track marked on the temporary teeth that the temporary lower jaw dentition rotates left and right evenly with respect to the temporary upper dentition, and the bite is mounted on the articulator accurately. The procedure is not to change the occlusal position of the provisional tooth that is in good condition, and to prevent further fine movement from side to side, the situation is marked on the dental precision bite material, and the model is occluded with the bite material. Copy and mount on a container.

Supplementary about the occlusal surface transparent plate 11. The occlusal surface transparent plate 11 is used as a reference device when the lower jaw impression model is precisely mounted on the articulator when the final prosthesis is manufactured from the temporary teeth in the final stage of the prosthesis. This plate is also used when the occlusal surface is crowned by wax-up on an abutment tooth. In particular, if the occlusal surface is not provided with a Spie curve or a Monson curve, or if it is provided with an ideal occlusion, an accurate occlusal surface can be produced by using this plate.

Thus, since the height of the occlusal surface P of the dentures M ₁ a and M ₂ a and the height of the medial annulus is the lower surface of the swivel plate 6, the occlusal surface P of the dentures M ₁ a and M ₂ a is used as the swivel plate 6. If the lower jaw model M ₁ and the upper jaw model M ₂ are attached so as to be the lower surface of the lower jaw, it is possible to bite without lowering the bite. Therefore, it is possible to treat “low bite”.

If the left and right occlusal positions are different, the fixed left and right lower support arms 2 in the embodiment of FIGS. 1 to 11 may be structured as a lower support arm 12x whose height can be adjusted by a turnbuckle connecting mechanism or the like as shown in FIG. The vertical height adjustment is easy. Fixing screw shaft 12x ₂ at the bottom of the lower support arm 12x is vertically. Fixing screw shaft 12x ₁ so that the opposite direction of the screw in the lower jaw model rear end fixing screw of the mounting base 1 axis 12x ₂ and coaxially is erected. Turnbuckle 12x ₃ is screwed between the fixed screw shaft _12x 1, _12x _2. If rotating the rotary operation panel 12x ₄ which is fixed to the turnbuckle 12x _3, the lower supporting arm 2, to the lower jaw model mounting base 1, height vertically adjustable. Vertical height is adapted to be measured by the scale 12x ₅ erected in the rear of the rotational operation panel 12x _4. This makes it possible to change the position of the occlusal surface P by raising and lowering the height of the fixed face plate 4 attached to the upper end of the lower support arm 2. In accordance with this, the height of the mounting position of the support ring 9a of the insisal pin 9 is also adjusted.

Thus, the fixed screw shaft 12x ₂ in which the lower support arms 2 on the left and right in the embodiment of FIGS. 1 to 11 are suspended from the lower support arm 2 with the structure of the turnbuckle 12x ₃ as shown in FIG. 12, and the lower jaw model coupling the fixing screw shaft 12x ₁ provided upright on the mounting base 1 in the turnbuckle 12x _3. Thereby, the height of the upper jaw model mounting frame 8 can be adjusted from the installation surface of the lower jaw model mounting base 1. Easily and quickly adjust so that the upper surface of the fixed face plate 4 corresponding to the height of the midline annulus joint is on the occlusal surface P of the upper and lower dentures M ₁ a and M ₂ a of the upper jaw model M ₂ and the lower jaw model M ₁ it can.

In this embodiment, as shown in FIGS. 13 and 14, the method of attaching the spacer 14 to either or both of the fixed face plate 4 and the swivel plate 6 with the front and rear end occlusion claws 14 a is also possible. It is also possible to adjust the height of the occlusal surface. For example, if a plastic spacer having a thickness of about 1.0 mm, 2.0 mm, 3.0 mm, 4.0 mm, or 5.0 mm is prepared, an occlusal surface can be obtained by using a spacer having an appropriate thickness. The height can be modified to the required height.

FIG. 13A shows an example in which a spacer 14 having a thickness of 2.0 mm is detachably attached to the lower fixed face plate 4 by a fitting claw 14a. As a result, the occlusal surface P and the upper jaw model mounting frame 8 are positioned 2 mm above.
FIG. 13B shows an example in which a spacer 14 having a thickness of 3.0 mm is detachably attached to the upper turning plate 6 by a fitting claw 14a. As a result, the position of the occlusal surface P is not changed, but the upper jaw model mounting frame 8 is lifted upward by 3.0 mm.
FIG. 13C shows an example in which two spacers 14 having a thickness of 2.0 mm are detachably attached to the lower fixed surface plate 4 and the upper swivel plate 6 respectively, and the occlusal surface is 2.0 mm upward and the upper jaw model. The mounting frame 8 is an example that is lifted upward by 4.0 mm.
The lifting dimensions can be adjusted upward by 1 mm by selecting the spacers 14 having different thicknesses. Furthermore, the height of the occlusal surface P can also be adjusted.

The occlusal surface transparent plate 11 can be inserted between the spacer 14 and the upper revolving plate 6 or between the spacer 14 fixed below the spacer 14. In this case, when the spacer 14 is used, the position of the support ring 9a of the insisal pin 9 is also adjusted so as to be horizontal.

Note that the front and rear ends of the spacer 14 in the longitudinal direction are provided with fitting claws 14a downward or upward. The spacer 14 a is fixed to the fixed face plate 4 or the swivel plate 6 by the fitting claws 14 a being applied to the front and rear side walls of the lower fixed face plate 4 or the upper swivel plate 6. As a result, the upper revolving plate 6 is prevented from coming off due to the revolving.

The present invention can be used not only for the production / restoration of every denture, but also for the production / restoration of a plurality of partial dentures and all dentures.

1 Lower jaw model mounting base 1a Leg 1b Lower jaw model mounting disk 1c Model fixing screw 2 Lower support arm 12x Lower support arm 12x ₁ Fixed screw shaft 12x ₂ Fixed screw shaft 12x ₃ Turn buckle 12x ₄ Rotating operation panel 12x ₅ Height scale Plate 3 Lower revolving shaft rod holding portion 4 Fixed face plate 4a Fitting hole 5 Revolving shaft rod

5a Fitting hole

5b Fitting hole 5c Axle 6 Rotating plate 6a Fitting hole 7 Upper support arm 7a Horizontal shaft (jaw opening / closing shaft)
7b Shaft support (shaft end sphere)
8 Maxillary model mounting frame

8a Frame base

8b Sphere seat 8c Maxillary model mounting disk 8d Model fixing screw 8e Incisal pin insertion hole 8f Incisal pin fixing screw 9 Incisal pin 9a Support ring 10 Incisal table 11 Occlusal surface transparent plate 11a pivot rod fitting groove 11b incisal pin inserting groove 14 spacer 14a fitting claw 14b insertion hole G example articulator M ₁ the lower jaw model M ₁ on a lower denture M ₂ maxillary model M ₂ a denture M of _G human temporomandibular joint M _S human median ring axis joint P occlusal surface

Claims

A lower jaw model with a lower denture attached to the upper center of the lower jaw model mounting base,
An upper jaw model mounting frame to which an upper jaw model to which an upper denture is attached is attached to the center lower side, and an upper jaw model mounting frame in which the upper jaw model mounting frame is disposed above the lower jaw model mounting base;
It is a horizontal axis that can be rotated so as to undulate the entire frame back and forth at the rear position of the upper jaw model mounting frame, and the horizontal axis is provided on the upper part of the support arm that is erected at the rear position of the lower jaw model mounting base. A horizontal axis,
By rotating the upper jaw model mounting frame around the horizontal axis, a dental articulator that can open and close the dentition of the lower denture and the dentition of the upper denture,
The upper jaw model mounting frame can be swiveled at a position behind the horizontal axis position where the upper jaw model frame rotates, and around an axis that is in the center of the left and right sides of the upper jaw model frame and perpendicular to the installation surface of the lower jaw model mounting base. A dental articulator characterized by that.
The dental articulator according to claim 1, wherein the length of the support arm is adjustable and the height of the upper model mounting frame can be corrected.
The dental articulator according to claim 1,
A mandibular model mounting base in which a model mounting disk and a model fixing screw for mounting a mandibular model to which a denture dentition is mounted on the center upper side are provided at the center and a setting surface is defined by a plurality of legs;
A model mounting disk and a model fixing screw for mounting the upper jaw model, which is arranged above the lower jaw model mounting base and mounted with an upper denture dentition, on the lower side of the center, are provided at the center, and at the rear position thereof. An upper jaw model mounting frame provided with a horizontal axis that allows the entire frame to be swung back and forth, and
A pair of left and right lower support arms that are erected on the lower jaw model mounting base so as to extend upward on the left and right sides of the rear end, and
A swiveling rod that is erected so as to be perpendicular to the installation surface of the lower jaw model mounting base at a position between the left and right of the rear end of the lower jaw model mounting base and further rearward of the lower support arm;
A fixed face plate constructed between upper ends of the pair of left and right lower support arms and having an upper surface parallel to an installation surface of the lower jaw model mounting base;
A swivel plate having a lower surface in surface contact with the upper surface of the fixed face plate and having a fitting hole into which the swivel shaft rod is inserted and rotating around the swivel axis rod while being in surface contact with the upper surface of the fixed face plate;
A pair of left and right upper support arms erected so as to extend upward to the left and right of both ends of the swivel plate, which are a predetermined distance ahead of the vertical axis of the swivel rod;
A pivotal support for pivotally supporting a horizontal axis provided at the rear end of the upper jaw model mounting frame at the upper ends of the left and right upper support arms;
A dental articulator comprising an incisal pin with a fixing screw at a front end portion of the upper jaw model mounting frame.
The dental articulator according to claim 3, wherein the height of the shaft support portion that supports the rotating horizontal shaft of the upper jaw model mounting frame is adjustable.
A thin transparent plastic plate with a thin thickness is detachably sandwiched between the fixed face plate and the swivel plate so that the front end face is supported in the middle of the incisal pin with a fixed screw, and is engaged with the transparent plastic plate. The dental articulator according to claim 3 or 4, wherein a surface can be clearly indicated.
A spacer that is fixed to any of the plates is detachably mounted between the fixed face plate and the swivel plate, and the swivel plate is horizontally horizontal with the facing surface of the spacer and the fixed face plate or swivel plate facing the spacer as a sliding surface. The dental articulator according to any one of claims 3 to 5, characterized in that the dental articulator can be swiveled to a right angle.
Two upper and lower spacers fixed to the plate above the fixed face plate and below the swivel plate are detachably attached to the plate so that the opposing surfaces of the upper and lower spacers can be swiveled horizontally left and right. The dental articulator according to any one of claims 3 to 5.
The opposing surface between the plate and the spacer is a sliding surface, and a thin transparent plastic plate with a thin thickness is detachably sandwiched between the opposing surfaces, and the front end surface is an intermediate between the fixed screw-incisal pin. The dental articulator according to claim 6, wherein the dental articulator is supported by.
The opposing surfaces of the two upper and lower spacers are made to be sliding surfaces, and a thin transparent plastic plate with a thin thickness is detachably sandwiched between the opposing surfaces, and the front end surface is supported in the middle of the fixed screw-incisal pin. The dental articulator according to claim 7, wherein the dental articulator is made.