JP2002209915A - Articulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve clinical reliability in an articulator for chewing motion. SOLUTION: A lower jaw magnet ring 3 is mounted onto the upper surface of a lower jaw frame 2, and a pair of columns 5 and 6 are stood on the lower jaw frame 2. The columns 5 and 6 support an upper jaw frame 9 facing to the upper part of the lower jaw frame 2 via an upper jaw linking mechanism 7 so as to keep its horizontal position. An upper jaw magnet ring 14 is mounted onto the lower surface of the upper jaw frame 9, and the upper jaw frame 9 is provided with an incisal pole 15 so as to butt its lower end on the lower jaw frame 2. Thus, the lower end of the upper jaw frame 9 is held at a predetermined horizontal position, and determination of the horizontal positions of the upper and lower jaws is provided stably. The incisal pole 15 can keep a high diameter of occlusion constant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an articulator for masticatory movement.

[0002]

2. Description of the Related Art Conventionally, a pulsator articulator has been used as this kind of articulator.

[0003]

However, this has the following drawbacks, and thus has the disadvantage of lacking clinical reliability.

[0004] First, the occlusal height cannot be fixed.

Second, since the lower jaw is designed to move freely by the coil spring, the horizontal position of the upper and lower jaws tends to be unstable.

In view of such circumstances, the present invention provides a clinically reliable articulator which can maintain a constant occlusal height and can stably determine the horizontal position of the upper and lower jaws. The purpose is to do.

[0007]

First, the invention according to claim 1 of the present invention has a lower jaw frame (2), and a lower jaw magnet ring (3) is mounted on the upper surface of the lower jaw frame. A pair of columns (5, 6) are erected on the upper column, and an upper jaw coupling mechanism (7) is mounted on these columns so that an upper frame (9) facing above the lower frame is maintained in a horizontal position. Rotatably supported via
The upper jaw magnet ring (1
4) is attached, and an incisal pole (15) is provided on the upper jaw frame so that the lower end thereof can contact the lower jaw frame. Here, representative examples of the maxillary coupling mechanism include a pair of centric holders (10), a pair of centric bars (11), and a pair of tapered springs (1).
2) and those comprising a condyl bar (13).

According to a second aspect of the present invention, the upper jaw frame (9) is supported at the rear end thereof so as to be vertically movable independently of left and right. Here, as a representative example of the maxillary joint mechanism, a pair of condyl shafts (2
0), a centric pin (21), a pair of brackets (22), a pair of vertical shafts (23), a pair of springs (24), a pair of fixing screws (25), a pair of vertical shafts (2
6), a pair of springs (27), a pair of fixing screws (2
8) and a pair of fixing screws (29).

Note that the reference numerals in parentheses are for convenience showing the corresponding elements in the drawings, and therefore, the present invention is not limited to the description on the drawings. The same applies to the column of “Claims”.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

<First Embodiment> FIGS. 1A and 1B show a first embodiment of an articulator according to the present invention, wherein FIG. 1A is a front view, FIG. c) is a right side view thereof, (d) is a plan view thereof, (e) is a bottom view thereof, and (f).
FIG.

The articulator 1 has a lower jaw frame 2 as shown in FIG. 1, and a lower jaw magnet ring 3 is fixed to an upper surface of the lower jaw frame 2. Further, a lower jaw model (not shown) is detachably attached to the upper side of the lower jaw magnet ring 3 by magnetic force. here,
Since four protrusions 3a are formed on the upper surface of the lower jaw magnet ring 3 at intervals of 90 ° on the circumference, if recesses corresponding to these protrusions 3a are formed in the lower jaw model, this lower jaw is formed. The model can be rotated at a pitch of 90 ° on the lower jaw magnet ring 3 and fixed at a desired position. Also,
On the lower jaw frame 2, a pair of columns 5, 6 are erected in parallel with each other. Arrow M about the axis CT1 through the upper jaw coupling mechanism 7 including a pair of centric bars 11, a pair of tapered springs 12, a condyl bar 13, and the like.
It is supported rotatably in the N direction.

That is, a centric holder 10 is mounted on the upper end of each of the columns 5 and 6, and a centric bar 11 is slid on each centric holder 10 in the horizontal direction (the directions of arrows A and B). It is movably inserted and has a tapered spring 12 mounted inward. On the other hand, a condyl bar 13 is horizontally inserted at the rear end of the upper jaw frame 9, and both ends of the condil bar 13 are engaged with the tapered springs 12 and are horizontally supported. In the state where each centric bar 11 protrudes in the direction of arrow A, FIG.
As shown in FIG. 1, the condyl bar 13 is not engaged with each centric bar 11, but when each centric bar 11 is retracted in the direction of arrow B, as shown in FIG. Since the condyle bar 13 is engaged with both ends, the condyle bar 13 and the rear end of the upper jaw frame 9 are held at a predetermined horizontal position.

An upper jaw magnet ring 14 is fixed to the lower surface of the upper jaw frame 9, and an upper jaw model (not shown) is detachably attached to the lower side of the upper jaw magnet ring 14 by magnetic force. Here, since four protrusions 14a are formed on the lower surface of the upper jaw magnet ring 14 at intervals of 90 ° on the circumference, these protrusions 14a are formed.
Is formed in the upper jaw model, the upper jaw model can be rotated at 90 ° pitch on the upper jaw magnet ring 14 and fixed at a desired position. further,
At the front end of the upper jaw frame 9, an incisal pole 15
Is vertically inserted with its lower end abutting on the upper surface of the lower jaw frame 2, and is engaged with a pole screw 16 for fixing the incisal pole 15 to the upper jaw frame 9. .

Since the articulator 1 has the above-described structure, it has clinically high reliability unlike the conventional pulsator articulator. That is, this articulator 1
Since the rear end of the upper jaw frame 9 is held at a predetermined horizontal position by the retreating operation of each centric bar 11, the horizontal position of the upper and lower jaws can be determined stably, and at the same time, the front end is Since the incisal pole 15 is provided, the occlusal height can be kept constant.
It should be noted that since the upper jaw model and the lower jaw model are both magnet detachable types, it is needless to mention that model exchange is easy.

<Second Embodiment> FIGS. 2A and 2B show a second embodiment of an articulator according to the present invention, wherein FIG. 2A is a front view, FIG. c) is a plan view thereof,
(D) is a bottom view thereof, and (e) is a cross-sectional view taken along line EE of (d).

As shown in FIG. 1, the articulator 1 has a lower jaw frame 2 which is composed of a frame body 2a and two fixing screws 2c attached to the frame body 2a.
And the table 2b fixed by the above. A lower jaw magnet ring 3 is fixed to the upper surface of the frame body 2a of the lower jaw frame 2. Here, on the upper surface of the frame body 2a of the lower jaw frame 2, four stainless steel balls 31 urged upward by a spring 32 are arranged at 90 ° intervals around the circumference. Is formed on the lower surface of the lower jaw magnet ring 3, so that the lower jaw magnet ring 3 is connected to the lower jaw frame 2 by tightening the fixing screw 30.
Can be rotated at a 90 ° pitch on the frame main body 2a to be fixed at a desired position. Further, a lower jaw model (not shown) is detachably attached to the upper side of the lower jaw magnet ring 3 by magnetic force. Here, four protrusions 3a are formed on the upper surface of the lower jaw magnet ring 3 on the circumference of 9 circles.
Since it is formed at intervals of 0 °, if concave portions corresponding to these convex portions 3a are formed in the lower jaw model, the lower jaw model is rotated at a 90 ° pitch on the lower jaw magnet ring 3 at a desired position. Can be fixed.

On the lower jaw frame 2, a pair of flexible columns 5, 6 are erected in parallel with each other, and these columns 5, 6 are provided on the upper jaw facing above the lower jaw frame 2. The frame 9 includes a pair of condyl shafts 20, a centric pin 21, a pair of brackets 22, and a pair of upper and lower shafts 2.
3, centering on the axis CT1 via the upper jaw coupling mechanism 7 including a pair of springs 24, a pair of fixing screws 25, a pair of vertical shafts 26, a pair of springs 27, a pair of fixing screws 28, a pair of fixing screws 29, and the like. Are supported so as to be rotatable in the directions of arrows M and N, and to be able to ascend and descend by a predetermined stroke separately at right and left at a rear end portion.

That is, a conjugate shaft 20 is mounted on the upper end of each of the columns 5 and 6, and a centric pin 21 is inserted in the form of connecting these conjugate shafts 20 in the horizontal direction. On the other hand, a pair of brackets 22 are fixed to the rear end of the upper jaw frame 9, and each bracket 22 has an elongated hole 22 a. An upper and lower shaft 23 is urged downward by a spring 24 at an upper portion of each bracket 22, and an upper and lower shaft 26 is urged upward by a spring 27 at a lower portion of each bracket 22. It is attached in the state where it was done. Here, by tightening the fixing screw 25, the vertical shaft 23 can be fixed at an arbitrary height within a predetermined stroke (for example, 5 mm), and by tightening the fixing screw 28, the vertical shaft 2 can be fixed.
6 can be fixed at an arbitrary height within a predetermined stroke (for example, 10 mm). The condyl shaft 20 is positioned between the upper and lower shafts 23 and 26, and a fixing screw 29 for fixing the bracket 22 to the condyl shaft 20 is screwed to the condyl shaft 20. Therefore, the upper jaw frame 9 is rotatable around the axis CT1 in the directions of the arrows M and N, and has a predetermined stroke (for example, 10
mm, 5 mm downward).

An upper jaw magnet ring 14 is fixed to the lower surface of the upper jaw frame 9, and an upper jaw model (not shown) is detachably attached to the lower side of the upper jaw magnet ring 14 by magnetic force. Here, since four protrusions 14a are formed on the lower surface of the upper jaw magnet ring 14 at intervals of 90 ° on the circumference, these protrusions 14a are formed.
Is formed in the upper jaw model, the upper jaw model can be rotated at 90 ° pitch on the upper jaw magnet ring 14 and fixed at a desired position. further,
At the front end of the upper jaw frame 9, an incisal pole 15
Is vertically inserted with its lower end in contact with the upper surface of the table 2 b of the lower jaw frame 2, and a pawl screw 16 for fixing the incisal pole 15 to the upper jaw frame 9 is screwed together. are doing.

Since the articulator 1 has the above-described structure, it has high clinical reliability unlike the conventional pulsator articulator. That is, this articulator 1
The upper jaw frame 9 has a centric pin 2 at its rear end.
1, the horizontal position of the upper and lower jaws can be determined stably, and the incisal pole 15 is provided at the front end thereof.
It is possible to keep the occlusal height constant. In addition, since the rear end of the upper jaw frame 9 of the articulator 1 is supported on the left and right independently so as to be able to move up and down, various operations (for example, face bow transfer, etc.) can be performed.
It should be noted that since the upper jaw model and the lower jaw model are both magnet detachable types, it is needless to mention that model exchange is easy.

[0022]

As described above, according to the first aspect of the present invention, since the rear end of the upper jaw frame is held at a predetermined horizontal position, the horizontal position of the upper and lower jaws is determined. Can be obtained stably, and at the same time, the occlusal height can be kept constant by the incisal pole, so that the clinical reliability of the articulator can be improved.

According to the second aspect of the present invention, since the rear end of the upper jaw frame is held at a predetermined horizontal position, the horizontal position of the upper and lower jaws can be determined stably. At the same time, since the occlusal height can be kept constant by the incisal pole, clinical reliability of the articulator can be improved. Moreover, since the rear end of the upper jaw frame can be moved up and down independently for left and right,
Various operations such as face bow transfer can also be performed.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of an articulator according to the present invention, wherein (a) is a front view, (b) is a left side view, (c) is a right side view, d) is a plan view thereof,
(E) is a bottom view thereof, and (f) is a use state diagram thereof.

FIG. 2 is a view showing a second embodiment of the articulator according to the present invention, wherein (a) is a front view, (b) is a right side view, (c) is a plan view, and (d). ) Is its bottom view, (e)
FIG. 4D is a cross-sectional view taken along line EE of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Articulator 2 ... Lower jaw frame 3 ... Lower jaw magnet ring 5, 6 ... Prop 7 ... Upper jaw coupling mechanism 9 ... Upper jaw frame 14 ... Upper jaw magnet ring 15 ... Incisal pole

Claims (2)

[Claims] 1. A lower jaw frame (2) having a lower jaw magnet ring (3) on an upper surface of the lower jaw frame.
A pair of struts (5, 6) are erected on the lower jaw frame, and the upper jaw frame (9) opposed to the upper side of the lower jaw frame is held on these posts so that the horizontal position thereof is maintained. It is rotatably supported via an upper jaw coupling mechanism (7), and an upper jaw magnet ring (1
4) The articulator, wherein an incisal pole (15) is provided on the upper jaw frame so that a lower end thereof can contact the lower jaw frame. 2. The articulator according to claim 1, wherein the upper jaw frame (9) is supported at the rear end thereof so as to be able to move up and down independently of right and left.