WO2020246630A1

WO2020246630A1 - Self-ligating bracket for orthodontics

Info

Publication number: WO2020246630A1
Application number: PCT/KR2019/006747
Authority: WO
Inventors: 정성민; 서승범; 서승우; 김도형
Original assignee: 주식회사 덴티움
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-12-10

Abstract

The present invention provides a self-ligating bracket for orthodontics, comprising: a main body having an attachment surface formed to be attached to a surface of a tooth, and a seating groove formed on the opposite side of the attachment surface and formed to be concave so as to seat an arch wire therein; a slider slidably coupled to the main body so as to be moved between a closed position for closing the seating groove and an open position for opening the seating groove; and a restraining unit configured to elastically deflect the slider with respect to the main body, and restraining the slider in at least the closed position from among the closed position and the open position, wherein the restraining unit comprises: a limiting structure having a limiting jaw and formed on the slider; and a locking member having a mounting portion mounted on the main body and a catching portion arranged along a direction different from that of the mounting portion and caught by the limiting jaw, wherein the locking member comprises a connecting portion connecting the mounting portion and the catching portion and bent in a direction from the mounting portion toward the seating groove so as to elastically deflect the catching portion from the main body toward the limiting jaw.

Description

Self-ligating bracket for orthodontics

The present invention relates to a self-ligating bracket used in orthodontic treatment.

In general, orthodontic treatment is for correcting a condition in which tooth arrangement is irregular, such as malocclusion. A mechanical aid, a brace, is commonly used for gastric treatment.

Until recently, various types and types of orthodontic braces have been developed and used for orthodontic treatment, but fixed orthodontic braces are generally used to straighten while pulling or pushing an arch wire to the slot of the bracket attached to the tooth surface. Has become.

Conventional fixed orthodontic braces have advantages such as convenience of operation in that a bracket is installed on the smooth outer surface of a tooth. However, in order to fix the arch wire to the bracket, it is necessary to tie a fixing member such as an elastic O-ring, a bolt, or a clip to the bracket, so that not only a lot of time and effort is required for the procedure, but the patient can easily feel pain. There are also disadvantages.

In order to solve the shortcomings of the above fixed orthodontic braces, a self ligation bracket capable of fixing the wire by a so-called one-touch method without fixing members such as O-rings, bolts, or clips is widely used. .

In this way, the ligation slider for fixing the arch wire is sometimes removed from the main body during the operator's operation thereon. In that case, the inconvenience of removing the body bonded to the teeth and then bonding a new bracket to the teeth again or tying the O-rings to the body as before occurs.

An object of the present invention is to provide a self-ligating bracket for orthodontics having a self-ligation method capable of structurally preventing the slider from being removed from the main body in the process of operating the slider.

The self-ligating bracket for orthodontics according to an aspect of the present invention for realizing the above object is an attachment surface formed to be attached to a surface of a tooth, and a concave arch wire formed on the opposite side of the attachment surface to be seated. A main body having a formed seating groove; A slider slidably coupled to the main body and moved between a closed position for closing the seating groove and an open position for opening the seating groove; And a restraining unit configured to elastically deflect the slider with respect to the main body, and restraining the slider in at least the closed position of the closed position and the open position, wherein the restraining unit includes a limiting jaw. And a limiting structure formed on the slider; And a locking member having a mounting portion mounted on the main body and a locking portion arranged in a direction different from that of the mounting portion and engaging the limiting jaw, wherein the locking member connects the mounting portion and the locking portion, and the locking member It may include a connecting portion bent in a direction toward the seating groove to elastically bias the locking portion toward the limiting jaw in the body.

Here, the locking member may include a leaf spring in which the mounting portion, the connection portion, and the locking portion are formed as a single body.

Here, the main body may further include an installation groove which is concave on the side opposite to the attachment surface, and into which the mounting portion is inserted.

Here, the installation groove may be formed to extend along a vertical direction with respect to a sliding path in which the slider moves between the closed position and the open position.

Here, the main body may further include a suppression protrusion formed protruding in a region opposite to the seating groove with respect to the installation groove, and preventing the connection portion from bending in a direction opposite to the seating groove.

Here, the limiting jaw may include a first limiting jaw formed corresponding to the closed position; And a second limiting jaw formed corresponding to the open position.

Here, the first limiting jaw may be formed to protrude less than the second limiting jaw.

Here, the restriction structure includes: a first guide portion guiding the locking portion to the first restriction jaw; And a second guide portion for guiding the locking portion to the second limiting jaw, and the second guide portion may be formed to be longer than the first guide portion.

Here, the second guide portion may include: a compression protrusion allowing the locking portion to deform toward the main body while passing through the first limiting jaw; And a relaxation inclined portion configured to deform the locking portion past the compression protrusion toward the slider toward the second limiting jaw.

Here, the main body further includes a pair of guide channels formed along a sliding path between the closed position and the open position, and the slider includes: a base portion; And a pair of wing portions protruding from both ends of the base portion and slidably inserted into the guide channel, wherein the limiting structure is defined by the pair of wing portions of the base portion, and faces the body. It can be formed on the inside.

According to the self-ligating bracket for orthodontics according to the present invention configured as described above, the slider is slid between the closed position and the open position with respect to the main body, and the restraining unit constraining the slider to the position includes a limiting jaw formed on the slider and The locking member has a corresponding locking member, the locking member having a locking portion caught on the limiting jaw, a mounting portion mounted on the main body, and a connection portion which elastically deflects the locking portion toward the limiting jaw to arrange the locking portion in a bent direction with respect to the mounting portion. , A structure is formed in which the locking member cannot be bent in the opposite direction even while the slider is slid between the closed position and the open position, so that the slider does not come off the body.

1 is a perspective view of a self-ligating bracket 100 for orthodontics according to an embodiment of the present invention.

2 is a perspective view of the orthodontic self-ligation bracket 100 of FIG. 1 viewed from another direction.

3 is an exploded perspective view of the orthodontic self-ligation bracket 100 of FIG. 1.

4 is a cross-sectional view along a line (IV-IV) of the orthodontic self-ligation bracket 100 of FIG. 1.

5 is a cross-sectional view showing another state of the orthodontic self-ligation bracket 100 of FIG. 4.

Hereinafter, a self-ligating bracket for orthodontics according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present specification, the same/similar reference numerals are assigned to the same/similar configurations even in different embodiments, and the description is replaced with the first description.

1 is a perspective view of the orthodontic self-ligating bracket 100 according to an embodiment of the present invention, and FIG. 2 is a perspective view of the orthodontic self-ligating bracket 100 of FIG. 1 viewed from another direction.

Referring to the drawings, the orthodontic self-ligating bracket 100 may include a body 110 and a slider 130.

The body 110 is configured to be attached to the teeth. The main body 110 may be a ceramic material, specifically zirconia. By such a material, the main body 110 has no difference in color from the teeth, so that the visual sense of difference with the teeth can be minimized. As a part that is directly attached to the teeth, the body 110 has an attachment surface 111. Accordingly, the attachment surface 111 may have a shape corresponding to the outer surface of the tooth. A mounting groove 113 is formed on the opposite side of the attachment surface 111. The seating groove 113 is a groove formed concave so that an arch wire (not shown) is seated. The seating groove 113 may be formed continuously extending from one side of the main body 110 to the other side. A guide channel 115 may be formed in a region where the seating groove 113 is not formed. The guide channel 115 may be formed to extend along a moving direction M corresponding to the sliding path of the slider 130. Thereby, the guide channel 115 can be arranged along a direction generally perpendicular to the extending direction of the guide channel 115. The guide channels 115 may be provided in a pair corresponding to both sides of the slider 130. A tool groove 117 may be formed on the upper side of the seating groove 113. The tool groove 117 becomes a groove in which the operator inserts a tool in order to move the slider 130 along the moving direction M. The tool groove 117 is concave to accommodate the tool in a state in which the slider 130 has the seating groove 113 closed.

The slider 130 is configured to be slidably coupled to the main body 110. Like the main body 110, the slider 130 may be formed of a ceramic material, specifically, a zirconia material. Slider 130 is between the closed position (see Figs. 1, 2, and 4) to close the seating groove 113 by the operator's manipulation, and the open position (refer to Fig. 5) to open the seating groove 113 It is configured to be moved. The slider 130 may have a base portion 131 and a wing portion 135. The base portion 131 may have a substantially plate-like shape. The wing portions 135 may be provided as a pair protruding from both ends of the base portion 131. The wing portion 135 is slidably inserted into the guide channel 115.

According to this configuration, the slider 130 prevents the arch wire seated in the seating groove 113 from deviating from the seating groove 113 in the closed position.

The operator can access the arch wire by moving the slider 130 to the open position when adjustment or replacement of the arch wire is required. To this end, the operator may insert the tool into the tool groove 117 and push the slider 130 in a direction away from the tool groove 117 along the moving direction M.

The slider 130 does not fall apart from the main body 110 in the separation direction D by the sliding movement of the wing portion 135 thereof being inserted into the guide channel 115. Furthermore, while moving in the moving direction M, at least one of the closed position and the open position maintains a state constrained to the corresponding position. The slider 130 is not constrained in the open position, but only temporarily stops, and then is elastically moved to the closed position to be constrained in the closed position.

The restraining unit 150 (FIG. 3) for constraining the slider 130 will be described with reference to FIG. 3.

Referring to this drawing, a moving surface 119 positioned on the opposite side of the attachment surface 111 may be formed on the main body 110. The moving surface 119 is a surface facing the slider 130 when moving relative to the body 110. An installation groove 121 and a suppression protrusion 123 may be formed in one area of the moving surface 119. The installation groove 121 is formed concave in a direction generally perpendicular to the moving surface 119. The suppression protrusion 123 is formed to protrude from the area opposite to the seating groove 113 based on the installation groove 121.

In order to constrain the slider 130 to the open position and/or the closed position with respect to the main body 110, the constraining unit 150 is employed. The constraining unit 150 may be configured to elastically deflect the slider 130 with respect to the body 110. The restraining unit 150 provides an elastic force that the body 110 and the slider 130 do not have because the body 110 and the slider 130 are made of ceramic, so that their elastic self-binding is achieved.

The restraint unit 150 may include a limiting structure 151 and a locking member 161. While the limiting structure 151 is formed on the side of the slider 130, the locking member 161 may be installed on the side of the main body 110.

Specifically, the limiting structure 151 is formed on the inner surface of the base portion 131. Specifically, it may be formed in a region defined by a pair of wing portions 135 among the inner surfaces. The agent may have a limiting jaw and a guide.

The limiting jaw is a portion over which a portion of the locking member 161 is caught. The limiting jaw may include a first limiting jaw 152 and a second limiting jaw 153 so that the slider 130 is constrained in both the closed position and the open position. If the first limiting jaw 152 is configured to engage the locking member 161 corresponding to the closed position, the second limiting jaw 153 is configured to engage the locking member 161 corresponding to the open position. The first limiting jaw 152 may be formed to protrude less than the second limiting jaw 153.

The guide portion is configured to guide a portion of the locking member 161 that is caught by the limiting jaw to the limiting jaw. Specifically, a first guide part 155 may be formed corresponding to the first limiting jaw 152, and a second guide part 156 may be formed corresponding to the second limiting jaw 153. The first guide part 155 may be simply a semicircular curved surface. In contrast, the second guide portion 156 may be longer than the first guide portion 156 and may have a compression protrusion 156a and a relaxation inclined portion 156b. The compression protrusion 156a is a convexly protruding portion following the first limiting jaw 152. The locking member 161 may be deformed toward the moving surface 119 while passing through the compression protrusion 156a. The relaxation inclined portion 156b is an inclined region extending from the compression protruding portion 156a and allows the locking member 161 to deform in a direction away from the moving surface 119, that is, in a direction toward the second limiting jaw 153.

The locking member 161 is installed on the main body 110 and is a configuration that acts on the limiting structure 151. To this end, the locking member 161 may have a mounting portion 162, a locking portion 164, and a connection portion 166. The mounting portion 162 is a portion that allows the locking member 161 to be mounted and installed on the main body 110. The mounting portion 162 may be a portion inserted and installed in the installation groove 121 of the main body 110. The locking portion 164 is a portion that is arranged along a direction different from the extension direction of the mounting portion 162 and is caught by the limiting jaw. Thereby, the locking part 164 is arranged so as to contact the slider 130. The connecting portion 166 is configured to connect the mounting portion 162 and the locking portion 164, and the locking portion 164 is bent with respect to the mounting portion 162 to elastically deflect toward the limiting jaw. To this end, the connection part 166 may be formed of a metal material having elasticity. Further, the locking member 161 may be a leaf spring in which the mounting portion 162, the locking portion 164, and the connecting portion 166 are formed as a single body. In that case, the locking member 161 needs only to be made of a leaf spring, and there is no need to perform any special operation or processing on the locking member 161 in order to install it on the main body 110, and the installation is simply a mounting portion 162 ) There is an advantage made only by inserting into the installation groove (121).

The restraining protrusion 123 of the main body 110 allows the locking part 164 to maintain the original bent state more robustly even with the force to be bent in the opposite direction while the locking part 164 is bent toward the seating groove 113 .

The operation of the bracket 100 according to the above configuration will be described with reference to FIGS. 4 and 5.

Referring to this drawing, while the slider 130 is closing the seating groove 113, the locking portion 164 of the locking member 161 is caught by the first limiting jaw 152. Thereby, the slider 130 moves in a direction away from the tool groove 117 along the moving direction M (even if gravity acts in the corresponding direction while being installed on the tooth) and is not separated from the main body 110.

When it is necessary to open the seating groove 113, the operator can push the slider 130 in a direction away from the tool groove 117 while putting the tool in the tool groove 117. In this case, the locking portion 164 is moved along the second guide portion 156, specifically, the compression protrusion 156a and the relaxation inclined portion 156b. Thereby, while riding the compression protrusion 156a, the locking portion 164 is deformed in the direction toward the moving surface 119 while leaving the first limiting jaw 152, while moving along the relaxation inclined portion 156b It is deformed in a direction opposite to the previous one toward the second limiting jaw 153.

Referring to this drawing, the locking part 164 is finally caught on the second limiting jaw 153. Since the second limiting jaw 153 protrudes more than the first limiting jaw 152, it cannot be crossed over. Also in its shape, if the curved surface forming the compression protrusion 156a is connected to the first limiting jaw 152, the second limiting jaw 153 has a planar shape that fundamentally restricts the additional movement of the locking part 164 The walls of are connected.

In the state of being caught by the second limiting jaw 153, the locking member 161 has a more erected arrangement state in the drawing than that of the first limiting jaw 152. Even so, the locking portion 164 is bent at least 90° in the mounting portion 162 and arranged toward the mounting groove 113 side. Even if the slider 130 receives a greater force in the direction away from the tool groove 117, the slider 130 is in an open state within a range in which the locking member 161 is damaged or the slider 130 is not damaged. It cannot be separated from the body 110 beyond. Further, the locking member 161 cannot be bent to the left in the drawing while the locking part 164 is bent to the right in the drawing. This is the case due to the arrangement structure of the locking member 161 itself, and more so by the connection portion 166 of the locking member 161 supported by the restraining protrusion 123. As a result, the slider 130 is detached from the main body 110 so that the main body 110 must be removed from the teeth can be structurally prevented.

The self-ligating bracket for orthodontics as described above is not limited to the configuration and operation of the embodiments described above. The above embodiments may be configured so that all or a part of each of the embodiments may be selectively combined to make various modifications.

The present invention has industrial applicability in the field of manufacturing a self-ligating bracket for orthodontics.

Claims

A body having an attachment surface formed to be attached to the surface of the tooth, and a seating groove formed on the opposite side of the attachment surface and concave so that the arch wire is seated;

A slider slidably coupled to the main body and moved between a closed position for closing the seating groove and an open position for opening the seating groove; And

And a restraining unit configured to elastically deflect the slider with respect to the main body, and constraining the slider in at least the closed position of the closed position and the open position,

The restraint unit,

A limiting structure having a limiting jaw and formed on the slider; And

And a locking member having a mounting portion mounted on the main body and a locking portion arranged in a direction different from that of the mounting portion and engaging the limiting jaw,

The locking member,

A self-ligating bracket for orthodontics comprising a connecting portion connecting the mounting portion and the locking portion and bending the mounting portion in a direction toward the mounting groove so as to elastically deflect the locking portion from the main body toward the limiting jaw.
The method of claim 1,

The locking member,

The mounting portion, the connection portion, and the locking portion comprises a leaf spring formed as a single body, orthodontic self-ligation type bracket.
The method of claim 1,

The main body,

Concave formed on the side opposite to the attachment surface, further comprising an installation groove into which the mounting portion is installed, orthodontic self-ligation type bracket.
The method of claim 3,

The installation groove,

The slider is formed to extend along a vertical direction with respect to the sliding path moving between the closed position and the open position, orthodontic self-ligation type bracket.
The method of claim 3,

The main body,

Self-ligating bracket for orthodontics, further comprising a suppression protrusion formed protruding in a region opposite to the seating groove with respect to the installation groove, and suppressing bending of the connection portion in a direction opposite to the direction toward the seating groove
The method of claim 1,

The limiting jaw,

A first limiting jaw formed corresponding to the closed position; And

A self-ligating bracket for orthodontic including a second limiting jaw formed corresponding to the open position.
The method of claim 6,

The first limiting jaw,

Formed to protrude less than the second limiting jaw, orthodontic self-ligation bracket.
The method of claim 7,

The restriction structure,

A first guide part guiding the locking part to the first limiting jaw; And

Further comprising a second guide portion for guiding the locking portion to the second limit jaw,

The second guide unit,

Formed longer than the first guide, orthodontic self-ligation bracket.
The method of claim 8,

The second guide unit,

A compression protrusion allowing the locking part to deform toward the main body while passing through the first limiting jaw; And

A self-ligating bracket for orthodontics including a relaxation inclined portion that allows the locking portion past the compression protrusion to deform toward the slider toward the second limiting jaw.
The method of claim 1,

The main body,

Further comprising a pair of guide channels formed along the sliding path between the closed position and the open position,

The slider,

Base portion; And

Protruding from both ends of the base portion, including a pair of blades slidably inserted into the guide channel,

The restriction structure,

The base portion is defined by the pair of wing portions, formed on the inner surface facing the body, orthodontic self-ligation bracket.