WO2023090754A1

WO2023090754A1 - Rotary roller-type self-ligating orthodontic bracket assembly

Info

Publication number: WO2023090754A1
Application number: PCT/KR2022/017603
Authority: WO
Inventors: 김덕수
Original assignee: 주식회사 지앤드아이
Priority date: 2021-11-16
Filing date: 2022-11-10
Publication date: 2023-05-25
Also published as: TW202333633A; KR102455440B1

Abstract

A rotary roller-type self-ligating orthodontic bracket assembly is disclosed. The disclosed rotary roller-type self-ligating orthodontic bracket assembly comprises: a base part (100) attached to the surface of the teeth; a body part (300) including a pair of ring parts (320, 320) integrally connected to the upper surface of the base part (100) by means of a connecting part (200), and arranged in parallel at the front and rear so as to form a rotation guide path therebetween, the pair of ring parts (320, 320) having a pair of shafft holes (322, 322) with the same center axial line and a pair of cut grooves (324, 324) through which the upper sides of the pair of shaft holes (322, 322) are open; a roller (400) which has a slot (420) into which a wire (W) is inserted, and which is rotatably inserted into the pair of shaft holes (322, 322); and a rod part (500) protruding from the outer peripheral surface of the roller (400) so as to rotate along the rotation guide path while the roller (400) rotates.

Description

Rotating roller type self-ligating orthodontic bracket assembly

The present invention relates to an orthodontic bracket assembly, and more particularly, to a rotating roller type self-ligating orthodontic bracket assembly having a simple and compact structure in which wire insertion and removal is easy.

Malocclusion is a condition in which the teeth of the lower and upper jaws are not aligned or do not mesh normally. In the case of malocclusion, not only does the appearance look bad, but functionally it also interferes with good chewing of food and adversely affects pronunciation. Furthermore, if the malocclusion is left unattended, tooth decay or gum disease may occur, and various other diseases may be caused or aggravated by adversely affecting other parts of the body.

Orthodontic surgery is used to treat malocclusion as described above. Orthodontics refers to a correction method of correcting the arrangement of teeth by moving the teeth little by little to a desired position by applying continuous force to regularly arranged teeth using orthodontic braces. Orthodontic braces include brackets directly attached to surfaces of teeth, and arch wires coupled to the brackets to provide a predetermined pressure or tension to the teeth. For orthodontic treatment, the pressure and tension applied to the arch wire and its direction can be adjusted in various ways, and the target tooth can be gradually moved according to the pressure, tension and direction provided by the adjustment.

Figure 6 is a conceptual diagram for explaining a conventional orthodontic method, showing a tooth correction method as a whole. Referring to Figure 6, looking at the orthodontic method that is generally performed today is as follows.

First, the bracket 20 is attached to the surface of the target tooth 10 with the target tooth 10 as a center for orthodontic treatment.

The brackets 20 are connected by an arch wire 30, and an elastic part 32 is formed on the arch wire 30 or a rubber band 40 is used to give continuous tension to the target tooth 10. It is also used to provide the direction of tension.

In addition, the elastic part 32 may be formed by bending a part of the arch wire 30 in various shapes such as a U-shape, a P-shape, an R-shape, and the like, and a fixed point and a tooth 10 ) It is possible to move the position of the tooth 10 by forming a fine tension or torsion between them, and is used to change the posture of the tooth 10.

Meanwhile, during orthodontic treatment, the arch wire 30 is connected to a fixed point, and the bracket 20 and the tooth 10 are connected by the arch wire 30 providing predetermined pressure and tension. ) moves slightly.

At this time, the bone tissue of the bone surrounding the tooth 10 is gradually absorbed in the direction in which the tooth 10 moves, and new bone tissue is formed on the other side to fill the empty space.

In this way, the processes of disappearance and generation of bone cells are repeated, and in the process, as much as the target tooth 10 moves minutely, the teeth are gradually corrected.

Orthodontic correction performed in the above-described orthodontic manner is accompanied by biological treatment as described above, and therefore, the treatment period is generally long and is known to require approximately two years.

Meanwhile, an orthodontic bracket configured to insert a wire in the same lateral direction as the extension direction of the wire through a hole formed in a side surface of the bracket is conventionally known. However, although these orthodontic brackets have a simple and simple structure, there is a lot of inconvenience because the dentist has to insert the wire in a lateral direction.

In contrast, an orthodontic bracket (assembly) having a structure in which a groove is formed on the bracket and a wire is inserted into the groove in a vertical direction orthogonal to the extension direction of the wire has been developed and used. The prior art has the advantage that the insertion of the wire is easy and simple, so that the fixing and separation (or disassembly) of the wire can be performed quickly. However, the prior art has disadvantages in that the structure for self-ligating the wire is complicated and durability is poor.

On the other hand, in order to implement a simple self-ligation structure, a tube having a long incision groove and a slot corresponding to the incision groove are formed and a rotation body rotating in the tube is formed, and when the incision groove and the slot coincide, the slot Self-ligating bracket assemblies have been contemplated that are configured to open to allow insertion of wires and to have closed slots. However, in this technique, a grooved member into which a wire is inserted is formed in a cylindrical shape, the cylindrical member is rotatably installed in a tube, an incision groove coincident with the groove formed in the cylindrical member is formed in the tube, and the cylindrical member is When the groove and the cut groove coincide with each other by rotating with respect to the tube, the groove is opened to allow insertion of the wire, and when the groove and the cut groove do not coincide, the groove is closed to prevent the wire from escaping. However, since the angular section in which the closed state of the grooves is maintained is small and the closed state of the grooves depends only on the frictional force between the incision grooves or its own weight, practical use is difficult. In addition, the durability of the coupling structure between the cylindrical member and the base and the strength of the tube are inevitably weak, which also makes practical use difficult.

Therefore, the problem to be solved by the present invention is to provide a rotating roller type self-ligating orthodontic bracket assembly, which is easy to insert and remove wires, has a simple and compact structure, and can be reliably maintained in a closed state. is to provide

Rotating roller type self-ligating orthodontic bracket assembly according to one aspect of the present invention, the base portion 100 attached to the surface of the teeth; It is integrally connected to the upper surface of the base part 100 by the connection part 200, and includes a pair of

ring parts

320 and 320 arranged side by side in front and back to form a rotation guide path therebetween. The

ring portion

320, 320 has a pair of

shaft holes

322, 322 having the same central axis and a pair of

cutout grooves

324, 324 opening the upper sides of the pair of

shaft holes

322, 322 are formed. body portion 300; A slot 420 into which the wire W is inserted is formed, and a roller 400 rotatably inserted into the pair of

shaft holes

322 and 322; and a rod part 500 protruding from an outer circumferential surface of the roller 400 so as to rotate along the rotation guide path while the roller 400 rotates, and by rotation of the roller 400, the slot (420) is opened in accordance with the pair of

incisions

324 and 324 or closed in mismatch with the pair of

incisions

324 and 324, and the rotation guide path is the pair of incisions (324 and 324). 324, 324), it includes a first rotation guide path (A) on one side and a second rotation guide path (B) on the opposite side, and the rod part 500 is the first rotation guide path (A). When at the end, the roller 400 is in a fully open position in which the slot 420 is fully open, and when the rod portion 500 is at the end of the second pivot guide path B, the roller 400 ) is motion constrained in a state where the slot 420 is placed in a fully closed fully closed position.

According to one embodiment, in order to restrain the movement of the roller 400 in the fully closed position, the pair of

ring parts

320 and 320 are formed to face each other on the side of the second rotation guide path B. It includes a pair of

locking protrusions

326 and 326, and while moving from a position other than the fully closed position to the fully closed position by applying force to the rod part 500, the pair The gap between the

locking protrusions

326 and 326 is widened, allowing the rod part 500 to pass between the pair of

locking protrusions

326 and 326, and in the fully closed position, the pair of locking protrusions 500 (326, 326) restrains the movement of the rod part 500, maintaining the completely closed state.

According to one embodiment, the rod part 500 has a circular cross-sectional shape so that the pair of

locking protrusions

326 and 326 easily allow the rod part 500 to pass through, and the pair of

locking protrusions

326 and 326 have a circular shape. The shape of the surface facing the inside of the pair of

shaft holes

322 and 322 of 326 and 326 is a spherical shape.

The rotary roller type self-ligating orthodontic bracket assembly according to the present invention has advantages in that wire insertion and separation is easy, has a simple and compact structure, and can be reliably maintained in a closed state.

1 is a perspective view showing a rotating roller type self-ligating orthodontic bracket assembly according to an embodiment of the present invention in an open position;

2 is a perspective view showing a rotating roller type self-ligating orthodontic bracket assembly according to an embodiment of the present invention in a closed position;

3 is an exploded perspective view showing a rotating roller type self-ligating orthodontic bracket assembly according to an embodiment of the present invention;

4 is a perspective view showing a state in which rollers are assembled in a rotating roller type self-ligating orthodontic bracket assembly according to an embodiment of the present invention;

5a to 5f are side views for explaining the operation of the present invention,

6 is a conceptual diagram for explaining a conventional orthodontic method,

Hereinafter, the present invention will be described with reference to the accompanying drawings. Note that any structure, material, step or feature of any embodiment disclosed herein may constitute another embodiment along with any structure, material, step or other feature of any other embodiment that is part of the invention. do. Note that the detailed description and related drawings do not limit or define the protection scope of the present invention. The protection scope of the present invention is defined by the claims.

1 is a perspective view showing a rotating roller-type self-ligating orthodontic bracket assembly according to an embodiment of the present invention in an open position, and FIG. 2 is a rotating roller-type self-ligating orthodontic bracket assembly according to an embodiment of the present invention. A perspective view shown in a closed position, Figure 3 is an exploded view showing a rotating roller type self-ligating orthodontic bracket assembly according to an embodiment of the present invention, Figure 4 is a rotating roller type according to an embodiment of the present invention It is a perspective view showing a state in which rollers are assembled in a self-ligating orthodontic bracket assembly, and FIGS. 5A to 5F are side views for explaining the operation of the present invention.

As shown in Figures 1 to 4, the self-ligating orthodontic bracket assembly according to an embodiment of the present invention is attached to the tooth surface during orthodontic treatment so that the wire (W) can be selectively ligated or disconnected. As such, the base portion 100 having a curved bottom surface corresponding to the tooth surface and attached to the tooth surface by adhesive resin (or adhesive), and the base portion 100 by the connection portion 200 It is integrally connected to the upper surface of and includes a pair of

ring portions

320 and 320 disposed side by side in front and back, and the pair of

ring portions

320 and 320 have a pair of shaft holes 322 having the same central axis. 322) and a pair of

incision grooves

324 and 324 for opening the upper sides of the pair of

shaft holes

322 and 322, and the body portion 300 formed therein, and the pair of

shaft holes

322 and 322 are rotatable. installed, a wire (W) is inserted, and a roller 400 formed with a slot 420 that selectively matches the pair of

incision grooves

324 and 324 by rotation, and the roller 400 rotates It includes a rod part 500 protruding from the outer circumferential surface of the roller 400 so as to rotate along the pair of

ring parts

320 and 320 during operation. In addition, a spherical bundle portion 520 may be additionally formed at the front end of the rod portion 500 .

The roller 400 may slide and rotate with respect to the pair of

shaft holes

322 and 322 by holding the rod part 500 . By the rotation of the roller 400, the slot 420 coincides with the pair of

incision grooves

324 and 324 to an open position in which the slot 420 is opened and the slot 420 is in a pair of

incision grooves

324 and 324. The roller 400 may be positioned in one of the closed positions where the slot 420 is closed due to mismatch with the

grooves

324 and 324 . In the open position, the wire W having a circular cross-section may be inserted into the slot 420 through the pair of

cutout grooves

324 and 324 and seated therein. In this state, when the roller 400 is rotated, the slot 420 is closed as the slot 420 and the

incision grooves

324 and 324 do not match.

In this embodiment, it is preferable that the rotation guide path formed between the pair of

ring parts

320 and 320 to guide the rotation of the rod part 500 is in the range of about 180 degrees. Accordingly. The rotation angle from the fully closed position in which the roller 400 is fully rotated to one side to the fully open position in which the roller 400 is fully rotated to the opposite side is approximately 180 degrees.

Based on the pair of

incision grooves

324 and 324, the rotation guide path is a first side of one side.

A second rotation guide path (B) opposite to the rotation guide path (A) is included. When the rod part 500 is at the end of the first rotation guide path A, the roller 400 is in a fully open position, so that the slot 420 is open, and the rod part 500 When is at the end of the second pivoting guide path B, the roller 400 is in a fully closed position, so the slot 420 is closed. In the fully closed position, that is, the position of the final use state, the rod part 500 is parallel to the base part 100 attached to the surface of the tooth and does not protrude to the outside, so it is not bad in terms of aesthetics and the rod part 500 is worn. There is no problem of stabbing inside.

The pair of

ring parts

320 and 320 include a pair of locking

protrusions

326 and 326 formed to face each other on the side of the second rotation guide path B. The distance between the pair of locking

protrusions

326 and 326 is set smaller than the diameter of the rod part 500 . Therefore, by applying force to rotate the rod part 500, when the rod part 500 pushes the pair of locking

protrusions

326 and 326 outward, that is, in a direction away from each other, the pair of While the

ring parts

320 and 320 are widened, the rod part 500 passes between the pair of locking

protrusions

326 and 326 and is fixed in the second rotation guide path B. Unless an external force is applied to the extent that the pair of

ring parts

320 and 320 are expanded by opening the space between the pair of locking

protrusions

326 and 326, the rod part 500 is the pair of locking protrusions ( 326. Movement is restricted by being caught between 326, and thus, a closed state in which the slot 420 and the pair of

incisions

320 and 320 do not match at all can be maintained.

At this time, the cross-sectional shape of the rod part 500 is circular, and the distance between the pair of locking

protrusions

326 and 326 gradually increases along a direction allowing the movement of the rod part 500 to the fully closed position. configured to be narrow. This is possible by forming the shape of the pair of locking

protrusions

326 and 326 toward the inside of the pair of shaft holes 322 and 322 into a spherical shape, so that the rod part 500 is not in a completely closed position. While moving from the position to the fully closed position, the pair of locking

protrusions

326 and 326 easily allow the rod part 500 to pass through. Conversely, in the fully closed position, the rod part 500 does not easily cross between the pair of locking

protrusions

326 and 326. The shape of the surface on which the pair of locking

protrusions

326 and 326 face outward is preferably a flat surface or a shape close to a flat surface.

A state before the wire W is inserted into the slot 420 in the fully open position described above is shown in FIG. 5A. A self-ligating bracket assembly in a fully open position into which a wire W is inserted is shown in FIGS. 1 and 5B. The self-ligating bracket assembly in the fully closed position described above is best shown in FIGS. 2 and 5F. 5C shows a position where the roller 400 and the rod part 500 formed on the roller 400 are rotated 45 degrees from the fully open position. 5D shows a position where the roller 400 and the rod part 500 formed on the roller 400 are rotated 90 degrees from the fully opened position. In this position, it is also an assembling position in which the roller 400 can be inserted into the shaft holes 322 and 322 of the pair of

ring portions

320 and 320 therebetween. A state in which the roller 400 is inserted into the shaft holes formed in the pair of

ring parts

320 and 320 is well shown in FIG. 4 . 5E shows a position where the roller 400 and the rod part 500 formed on the roller 400 are rotated 135 degrees from the fully open position. At this position, the rod part 500 applies a force to open the pair of locking

protrusions

326 and 326, and at this time, the force causes an elastic deformation that opens the pair of

ring parts

320 and 320. . 2 and 5f show that the roller 400 and the rod part 500 formed on the roller 400 are rotated 180 degrees from the fully open position so that the rod part 500 goes beyond the pair of locking

protrusions

326 and 326. It is constrained by the pair of locking

protrusions

326 and 326. And, in this state, the elastically restored state is between the pair of

ring parts

320 and 320 that have been elastically deformed and opened.

At this time, the slot 420 is composed of a semicircular seating groove corresponding to the circular cross section of the wire W and a wire inlet formed to have a constant width equal to the diameter of the semicircular seating groove.

In addition, as described above, a spherical bundle portion 520 is formed at the front end of the rod portion 500 . The bunch part 520 can serve as a handle that can be held and handled when the rod part 500 is rotated, and furthermore, a string (not shown) such as a spring, a louver band, or a wire is used to (520). The bound tension line may be connected to a bundle portion or other structure provided in another neighboring self-ligating orthodontic assembly, and may participate in applying a force for moving the teeth in a required direction. The bundle portion 520 preferably has a spherical shape that does not damage the oral cavity of the patient.

Although specific embodiments of the present invention have been described in detail above, the present invention is not limited thereto, and various modifications can be made to the present invention by those skilled in the art, and these modifications is included in the scope of the present invention.

Claims

Base portion 100 attached to the surface of the tooth;

It is integrally connected to the upper surface of the base part 100 by the connection part 200, and includes a pair of ring parts 320 and 320 arranged side by side in front and back to form a rotation guide path therebetween. The ring portion 320, 320 has a pair of shaft holes 322, 322 having the same central axis and a pair of cutout grooves 324, 324 opening the upper sides of the pair of shaft holes 322, 322 are formed. body portion 300;

A slot 420 into which the wire W is inserted is formed, and a roller 400 rotatably inserted into the pair of shaft holes 322 and 322; and a rod part 500 protruding from an outer circumferential surface of the roller 400 so as to rotate along the rotation guide path while the roller 400 rotates, and by rotation of the roller 400, the slot 420 is opened in accordance with the pair of incisions 324 and 324 or closed inconsistent with the pair of incisions 324 and 324, and the rotation guide path is the pair of incisions (324 and 324). 324, 324), it includes a first rotation guide path (A) on one side and a second rotation guide path (B) on the opposite side, and the rod part 500 is the first rotation guide path (A). When at the end, the roller 400 is in a fully open position in which the slot 420 is fully open, and when the rod portion 500 is at the end of the second pivot guide path B, the roller 400 ) is a rotating roller-type self-ligating orthodontic bracket assembly, characterized in that the movement is restrained in a state in which the slot 420 is placed in a fully closed fully closed position.
The method according to claim 1, in order to restrict the movement of the roller 400 in the fully closed position, the pair of ring parts 320 and 320 are formed to face each other on the side of the second rotation guide path B. It includes locking protrusions 326 and 326, and while moving from a position other than the fully closed position to the fully closed position by applying force to the rod part 500, the pair of The gap between the locking protrusions 326 and 326 is widened, allowing the rod part 500 to pass between the pair of locking protrusions 326 and 326, and in the fully closed position, the pair of locking protrusions ( 326, 326 is a rotating roller type self-ligating orthodontic bracket assembly, characterized in that for maintaining the completely closed state by restraining the movement of the rod part 500.
The method according to claim 2, so that the pair of locking protrusions (326, 326) easily allow the rod portion 500 to pass, the rod portion 500 has a circular cross-sectional shape, and the pair of locking protrusions ( Rotating roller type self-ligating orthodontic bracket assembly, characterized in that the shape of the surface facing the inside of the pair of shaft holes (322, 322) of 326, 326 is a spherical shape.