JPH0644408Y2 - Orthodontic bracket - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an orthodontic bracket suitable for application when performing orthodontic treatment.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view showing an example of a conventional orthodontic bracket.

As a conventional orthodontic bracket 1,
For example, as shown in FIG. 6, a metal one in which a slot 8a having a rectangular cross section (for example, .018 × .025 or .022 × .028) is formed on the upper surface of a substantially rectangular parallelepiped main body 8 is widely used. There is. The orthodontic bracket 1 in which the slot 8a is provided with the inclination angle θ is mainly used so that the anatomical tooth axis can be improved for one tooth.

[0004]

However, in this case, since the inclination angle θ is provided to the slot 8a itself, it is not necessary to give an angle or a twist to the arch wire (not shown) having a rectangular cross section, but one tooth is required. Since the inclination angle θ has to be set for each of them, many kinds of orthodontic brackets 1 have to be prepared, and the manufacturing unit price of the orthodontic bracket 1 inevitably increases.

Further, when the angle is changed according to the treatment stage of the orthodontic treatment, it is necessary to replace the orthodontic bracket 1 or to give the archwire an angle. There was an inconvenience that it took time and effort.

Further, in the state where the orthodontic bracket 1 is bonded to the surface of the tooth, since the material is metal,
There was no choice but to give an impression of being inorganic and chilly, and there was a risk of causing discomfort to the people around during conversation or eating.

[0007] In view of the above circumstances, the present invention is capable of keeping the manufacturing unit price low, the angle can be easily changed during orthodontic treatment, and the tooth is not conspicuous even if it is adhered to the tooth. An object is to provide a bracket for orthodontics.

[0008]

That is, an orthodontic bracket (1) according to the present invention has a bracket body (2), and a slot member engaging groove (3) having a rectangular cross section is formed in the bracket body. Then, a slot member (6) in which a slot (6c) having a rectangular cross section is formed to be inclined by a predetermined inclination angle (θ) is detachably fitted in the slot member engaging groove, and the slot member A restraint mechanism (4 and 6b, 9) for restraining horizontal movement with respect to the bracket body.
And 6e) are provided.

The bracket body (2) is made of plastic or ceramic, and the slot member (6) is made of metal.

Numbers in parentheses are for convenience of showing corresponding elements in the drawings, and the present invention is not limited to the description in the drawings. The same applies to the "utility model registration request range" and "action" columns.

[0011]

With the above-described structure, the present invention is designed to change the angle of the tooth (1) when the angle is changed according to the treatment stage of the orthodontic treatment.
It is not necessary to replace the bracket body (2) adhered to 0) or to give an angle to the arch wire (12), and it works by simply replacing the slot member (6) appropriately.

[0012]

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

FIG. 1 is a front view showing an embodiment of an orthodontic bracket according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a bracket main body of the orthodontic bracket shown in FIG. FIG. 4 is a side view showing a state of being adhered to the surface, FIG. 4 is a front view showing another embodiment of the orthodontic bracket according to the present invention,
FIG. 5 is a front view showing another embodiment of the orthodontic bracket according to the present invention.

The orthodontic bracket 1 according to the present invention comprises:
As shown in FIG. 1, it has a bracket main body 2 made of transparent or milk brown plastic or ceramic formed in a substantially rectangular parallelepiped shape, and a slot member engaging groove 3 having a rectangular cross section is provided on the upper surface of the bracket main body 2. Has been formed. As shown in FIGS. 1 and 2, four tie wings 5 are formed on the upper end of the side portion of the bracket body 2, and four round holes 4 are formed on the top surface of the bottom portion of the bracket body 2. Is recessed, and the tooth bonding surface 2a is formed on the lower surface thereof.

A slot member 6 made of metal such as stainless steel is detachably fitted in the slot member engaging groove 3, and the slot member 6 has a slot body 6a of a substantially rectangular parallelepiped shape. . A slot 6c having a rectangular cross section is formed on the upper surface of the slot body 6a in a shape inclined by a predetermined inclination angle θ (for example, 3 °, 12 °, 15 °, 20 °, etc.). Further, four protrusions 6b are formed on the lower surface of the slot body 6a, and each protrusion 6b can be fitted into and engaged with each round hole 4 of the bracket body 2 respectively.

Since the orthodontic bracket 1 according to the present invention has the above-described structure, when performing orthodontic treatment using the orthodontic bracket 1, as shown in FIG. The bracket body 2 is bonded to the surface of the tooth 10 to be bonded via the tooth bonding surface 2a, and the slot member 6 is inserted into the slot member engaging groove 3 of the bracket body 2 as shown in FIG. It is fitted so that it faces upward in FIG. Then, the protrusions 6b of the slot member 6 are fitted into and engaged with the round holes 4 of the bracket body 2, respectively. In this state, the arch wire 12 having a rectangular cross section is inserted into the slot 6c of the slot member 6, and a ligature wire (not shown) is hooked on the tie wing 5 to perform orthodontic treatment.

At this time, since the slot member 6 is sandwiched between the bracket body 2 and the arch wire 12, the slot member 6 is removed from the slot member engaging groove 3 of the bracket body 2 during orthodontic treatment. It does not come off. Further, since the projection 6b of the slot member 6 is fitted and engaged with the round hole 4 of the bracket body 2, the slot member 6 moves in the horizontal direction (direction perpendicular to the plane of FIG. 1) with respect to the bracket body 2. Nothing. Furthermore, since the bracket main body 2 that occupies most of the orthodontic bracket 1 is made of plastic or ceramic rather than metal, even if the orthodontic bracket 1 is bonded to teeth, it is not conspicuous and aesthetic. Excel. Needless to say, the bracket body 2 may be made of metal when the aesthetics of the orthodontic bracket 1 is not a concern.

By the way, there are cases where the angle must be changed depending on the treatment stage of the orthodontic treatment. In that case, the slot member 6 need only be replaced as appropriate, and the bracket adhered to the tooth 10 is required. Since it is not necessary to replace the main body 2 or give an angle to the archwire 12, it is possible to easily change the angle according to the treatment stage.

In the above embodiment, the slot body 6
To prevent a from moving horizontally with respect to the bracket body 2, four round holes 4 are provided on the upper surface of the bottom portion of the bracket body 2, and teeth provided with four protruding portions 6b on the lower surface of the slot body 6a. Although the row correction bracket 1 has been described, it is needless to say that the number of the round holes 4 and the protrusions 6b is not limited to four and may be any number. In addition, various restraint mechanisms for restraining the horizontal movement of the slot body 6a with respect to the bracket body 2 can be considered. For example, the bracket body 2 may be provided with a projection and the slot body 6a may be provided with a round hole, or, as shown in FIG. 4, a vertical groove 9 may be formed on the inner peripheral surface of the side portion of the bracket body 2. It is also possible to form the protrusion 6e on the outer peripheral surface of the slot body 6a while forming the protrusion.

Further, in the above embodiment, the orthodontic bracket 1 in which the slot member 6 is detachably fitted in the slot member engaging groove 3 of the bracket main body 2 so that the slot 6c faces upward in FIG. However, in the present invention, as shown in FIG. 5, the slot member engaging groove 3 is provided.
Alternatively, the slot member 6 may be removably fitted so that the slot 6c faces downward. In this case, in order to prevent the slot member 6 from being disengaged from the slot member engaging groove 3 of the bracket main body 2 in the upper direction of FIG. 5 during the orthodontic treatment, as shown in FIG. It is necessary to provide the slot member 6 so as to penetrate horizontally.

Further, in the above embodiment, the orthodontic bracket 1 having the tie wings 5 formed on the upper ends of the side portions of the bracket body 2 has been described. However, when it is not necessary to hook the ligature wire, it goes without saying. However, the tie wing 5 is unnecessary. As shown in FIG. 5, when the tie wings 5 are not provided, the wall thickness of the side portion of the bracket body 2 can be increased to improve the durability.

[0022]

As described above, according to the present invention,
The slot member 6 has a bracket main body 2, a slot member engaging groove 3 having a rectangular cross section is formed in the bracket main body 2, and a slot member 6 formed by inclining a slot 6c having a rectangular cross section by a predetermined inclination angle θ is used as the slot. A restraint mechanism such as a round hole 4 and a protrusion 6b, a vertical groove 9 and a protrusion 6e, which is detachably fitted in the member engagement groove 3 and restrains the horizontal movement of the slot member 6 with respect to the bracket body 2, is provided. Since the structure is provided, it is not necessary to replace the bracket body 2 adhered to the tooth 10 or give an angle to the archwire 12 when changing the angle according to the treatment stage of the orthodontic treatment, and the slot member is provided. Since 6 need only be replaced as appropriate, the angle can be easily changed during the orthodontic treatment. Further, since the bracket main body 2 can be shared, the manufacturing unit cost of the orthodontic bracket 1 can be kept low.

When the bracket body 2 is made of plastic or ceramic and the slot member 6 is made of metal, the bracket body 2 occupying most of the orthodontic bracket 1 is made of plastic or ceramic. Therefore, even if the orthodontic bracket 1 is adhered to the teeth, it is not conspicuous and is excellent in aesthetics, and it is possible to prevent the discomfort of surrounding people during conversation or meal. Becomes

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an orthodontic bracket according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side view showing a state in which the bracket body of the orthodontic bracket shown in FIG. 1 is bonded to the surface of a tooth.

FIG. 4 is a front view showing another embodiment of the orthodontic bracket according to the present invention.

FIG. 5 is a front view showing another embodiment of the orthodontic bracket according to the present invention.

FIG. 6 is a perspective view showing an example of a conventional orthodontic bracket.

[Explanation of symbols]

 1 ... Orthodontic bracket 2 ... Bracket body 3 ... Slot member engaging groove 4 ... Restraint mechanism (round hole) 6 ... Slot member 6b ... Restraint mechanism (protrusion) 6c ... Slot 6e ... … Restraint mechanism (projection) 9 …… Restraint mechanism (vertical groove) θ …… Inclination angle

Claims (2)

[Scope of utility model registration request] 1. A bracket body (2), wherein a slot member engagement groove (3) having a rectangular cross section is formed in the bracket body, and the rectangular cross section slot (6c) has a predetermined inclination angle (θ).
A restraint mechanism (4 and 6b, which slidably fits a slot member (6) formed in a slanted shape into the slot member engaging groove to restrain the horizontal movement of the slot member with respect to the bracket body. 9 and 6
An orthodontic bracket configured by providing e). 2. The orthodontic bracket according to claim 1, wherein the bracket body (2) is made of plastic or ceramic, and the slot member (6) is made of metal.