JPH0633926Y2 - Maxillary anterior traction device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an anterior maxillary bone traction device for malorbital orthodontic treatment, and in particular, eliminates obstacles in the visual field of the patient to eliminate pressure and improve the usability. The present invention relates to an epoch-making maxillary bone anterior traction device capable of improving and adjusting the position of the hook portion by plastically deforming it according to the patient and obtaining a high correction effect.

2. Description of the Related Art There are two methods for correcting malocclusion: a method of pushing the mandible back to the back and a method of pulling the maxilla forward, but the latter method has a better therapeutic effect. However, the conventional anterior maxillary bone traction device 1 is shown in FIG. 9 and FIG.
A frame 3 formed by bending a wire-shaped material such as stainless steel or aluminum according to the contour of the patient's face 2 has a resin genital pad 4 fixed to the lower end 3a, and a resin frontal pad to the upper end 3b. 5 is rotatably arranged. A hook member 3c made of the same material as that of the frame 3 for hanging the cord-like elastic body 10 was fixed at a position slightly lower than the central portion of the frame 3 in the vertical direction.

For treatment of malocclusion, place the mental pad 4 on the jaw 2a.
The frontal pad 5 is attached to the forehead 2b in contact with the forehead 2b, but in the conventional maxillary anterior traction device 1, since the hook member 3c is mounted at a considerably high position, the front lower visual field (arrow B) of the face 2 is indicated. There is a drawback that the hook member 3c gets inside and gives a patient a feeling of pressure and discomfort.

Further, since the hook member 3c is made of a long wire-like material necessary for connecting the left and right ends 3d of the frame 3, it is necessary to use a wire having a large diameter from the viewpoint of strength. There is a drawback in that the position of the member 3c cannot be adjusted by plastically deforming it, and therefore, the optimum correction cannot be performed according to the individual patient.

The present invention has been made in order to eliminate the above-mentioned drawbacks of the prior art. The purpose of the present invention is to hang one end of a string-like elastic body in a maxillary anterior traction device for malorbital orthodontic treatment. By attaching a pair of hook members to the upper part of the mental pad in a direction substantially perpendicular to the frame, the hook members are positioned outside the visual field range of the patient undergoing orthodontic treatment to give the patient a feeling of pressure or discomfort. It is also necessary to make the appearance of the maxillary bone anterior traction device more natural when attached, so as not to make a third person feel uncomfortable.

Another object is to form the hook member with a wire-like elastic body that can be plastically deformed by the force of the fingers so that the position of the hook part can be plastically deformed and adjusted according to the patient, and fine adjustment can be made. And to obtain the best corrective effect.

Configuration In summary, the present invention is a wire-shaped frame formed to match the contour of the face, a chin pad fixed to the lower part of the frame so as to be in close contact with the chin, and one end of the maxilla or an integral part thereof. In a maxillary bone anterior traction device comprising: a hook member for angling the other end of the hung string-like elastic body to anteriorly draw the maxilla, wherein the hook member is the frame above the mental pad. A pair of hairpin-shaped bent portions that are attached in a substantially right angle direction with respect to each other, and are installed in the mental pad, and a pair of hairpin-shaped bent portions that are continuously formed in a horizontal direction on the basic part,
The hairpin-shaped bent portion is continuously formed in a vertical direction and has a hook portion opened downward.

The present invention will be described below based on the embodiments shown in the drawings. First
In the figure, a maxillary bone anterior traction device 1 according to the present invention includes a frame 3, a mental pad 4, and a hook member 6.

Referring to FIG. 1 to FIG. 8, the frame 3 is for holding the mental pad 4 and the frontal pad 5 in place, and is made of, for example, a lightweight metal material such as wire-like aluminum having a diameter of 3 mmψ. 2 is formed so as to conform to the contour of the chin 2, and a chin pad 4 made of resin is fixed to the lower end 3a thereof in conformity with the shape of the jaw 2a. Also the upper end 3b
The frontal pad 5 to be mounted in contact with the forehead 2b is arranged so that the frame 3 penetrates a pair of projecting pieces 5a formed on the frontal pad 5. The frontal pad 5 can rotate about the upper end portion 3b of the frame 3 as a center of rotation against a proper rotation resistance. When the maxillary anterior traction device 1 is attached, the frontal pad 5 of the patient's face 2 can be rotated. It is configured so that it can be rotated to the position most suitable for the shape and a comfortable wearing feeling can be obtained.

The genital pad 4 is adapted to be brought into contact with the patient's jaw 2a and to be fitted with the maxillary anterior traction device 1 so as to set the position of the hook member 6 to a predetermined position. It is made of the formed resin. Since the shape of the patient's chin 2a is slightly different for each individual, the shape of the chin pad 4 does not necessarily have to be a shape that fits the entire chin 2a, but has a larger radius of curvature in the left-right direction and more room in the left-right direction. It is better to make the chin pad 4 contact the corners of the jaw 2a, and in consideration of the fact that a good feeling of use can be obtained by this, the chin pad 4 of the present application moves the face 2 during use. However, the anterior maxilla traction device 1 is formed in a special shape so as not to come off the jaw 2a. That is, the mental pad 4 is shaped to fit the skeleton of a Japanese person, and the inner surface 4a of the mental pad 4 is formed to have a rough surface so as not to cause discomfort when the jaw 2a is brought into contact therewith. As a result, the frictional resistance is increased to prevent the jaw 2a from slipping off.

The hook member 6 has one end attached to the maxilla 8 or the tooth 9 integral therewith.
It is for hanging the other end 10a of the string-like elastic body 10 on which 10b is hung, and is plastically deformable by the force of a finger, for example, formed by bending a wire-like elastic material having a diameter of 1 mmψ or less, and A pair of main parts 6a are planted on the upper part 4b of the genital pad 4. Since the pair of hook members 6 have the same shape, one hook member 6 will be described.
A pair of hairpin-shaped bent portions 6b is formed continuously in the horizontal direction, and a hook portion 6c that opens downward is formed vertically in a continuous manner from the hairpin-shaped bent portion 6b. Then, referring to FIG. 7, a fixing member 11 fixed by covering the pair of left and right teeth 9 with each other.
The hook member 6a of the hook member 6 and the end 1
It is configured so that one end 10b of the string-shaped elastic body 10 on which 0a is hung is hung and the maxilla 8 is pulled forward.

Operation The present invention is configured as described above, and its operation will be described below. In FIG. 7 and FIG. 8, the chin pad 2a of the patient undergoing the correction treatment of malocclusion with the mental pad 4
Then, the frontal pad 5 is brought into contact with the forehead 2b. Then, one end 10 of the string-like elastic body 10 hung on the hook portion 6c of the hook member 6
The b is hung on the hook part 11a of the fixing member 11 with the pair of left and right teeth 9 on the upper side, and the maxillary bone 8 is pulled forward to correct malocclusion, but the shape of the face 2 and the size of the mouth 2c are large. The direction in which the maxillary bone 8 should be pulled varies widely depending on the patient, and the hook member 6 is plastically deformed with fingers to pull in the optimal direction with the force of the optimal magnitude for each patient. Let me put it on.

In the mounted state, the elastic force of the string-like elastic body 10 constantly urges the maxillary bone anterior traction device 1 toward the face 2, so that the maxilla anterior traction device 1 is held by the jaw 2a and the forehead 2b. And never falls from face 2. Further, since the hook member 6 is attached to the upper portion 4b of the mental pad 4 in a direction substantially perpendicular to the frame 3, the hook member is not only in the upper visual field (direction of arrow A) but also in the lower visual field (direction of arrow B) of the patient. Since 6 is not entered, the patient does not feel any pressure. Also, the glasses can be used without any trouble.

Advantageous Effects of the Invention According to the present invention, in the anterior maxillary bone traction device for treating malocclusion as described above, a pair of hook members for hanging one end of the cord-like elastic body are attached to the upper part of the chin pad in a direction substantially perpendicular to the frame. Therefore, there is an effect that the hook member can be positioned outside the visual field range of the patient undergoing orthodontic treatment, and the patient is not given a feeling of pressure or discomfort. Further, since the hook member is formed of the wire-like elastic body which can be plastically deformed by the force of the fingers, the position of the hook portion can be plastically deformed and adjusted according to the patient, and as a result, the magnitude of the force to be corrected and There is an effect that the direction of action can be adjusted to make a fine adjustment, and the best correction effect can be obtained.

Further, since the hook member is downsized, the appearance when attached is more natural, and the discomfort given to a third party can be greatly reduced compared to the conventional product.

[Brief description of drawings]

1 to 8 relate to an embodiment of the present invention. FIG. 1 is an overall perspective view of the anterior maxillary bone traction device, FIG. 2 is the same front view, FIG. 3 is the same rear view, and FIG. Also the left side view,
Fig. 5 is a plan view of the same, Fig. 6 is a vertical cross-sectional view taken along the line VI-VI of Fig. 2, Fig. 7 is a partially cutaway perspective view showing the usage state of the maxillary anterior traction device, and Fig. 8 is a side view of the same. Figures, 9 and
FIG. 10 is related to a conventional example, FIG. 9 is a front view of the maxilla front traction device, and FIG. 10 is a side view showing the usage state of the maxilla front traction device. 1 is an anterior maxillary traction device, 2 is a face, 2a is a jaw, 3 is a frame, 4 is a mental pad, 6 is a hook member, 6a is a trunk, 6b is a hairpin bend, 6c is a hook, and 8 is a maxilla. ,
10 is a string-like elastic body.

Claims (2)

[Scope of utility model registration request] 1. A wire-like frame formed in conformity with the contour of a face, a mental pad fixed to the lower part of the frame so as to be in close contact with the jaw, and one end of which is hooked on the maxilla or an integral part thereof. In the anterior maxillary bone traction device including a hook member for pulling the maxilla forward by hanging the other end of the string-shaped elastic body, the hook member is provided on the frame above the genital pad. And a pair of hairpin-shaped bent portions which are attached to the mussels pad in a pair at a substantially right angle to each other, and a pair of hairpin-shaped bent portions which are continuously formed in the trunk portion in the horizontal direction, and the hairpin. Anterior maxillary bone traction device, characterized in that it comprises a hook portion that is formed in a vertical direction and that is continuous with the curved portion and that opens downward. 2. The anterior maxillary bone traction device according to claim 1, wherein the hook member is formed of a wire-like elastic body that can be plastically deformed by the force of a finger.