Self-locking orthodontic bracket, correction device and system

Abstract

The present application discloses a self-locking orthodontic bracket, an orthodontic correction device, and a system. The self-locking orthodontic bracket includes a mesh base, and two fixing ears are provided on the top side of the mesh base. Each fixing ear and the mesh base are of an integral structure or a split-fixed structure; each fixing ear is respectively provided with an arch wire hole allowing an arch wire to pass through. The circumferential direction of the arch wire hole is a fully enclosed structure or partially provided with an open area. The arch wire holes on the two fixing ears are oppositely arranged to form an arch wire threading channel. The technical solution disclosed in the present application replaces the slot body in the traditional self-locking bracket through the design of the fixing ears, thereby avoiding the influence of complex structures on production manufacturing and daily use and cleaning; at the same time, the structure of the fixing ears can overcome the problem that the locking piece in the traditional technical solution is prone to failure, thereby bringing a stable and convenient use experience to patients.

Description

Technical Field

[0001] The present application relates to the field of dental orthodontics, and in particular to self-ligating orthodontic brackets, correction devices and systems. Background Art

[0002] The existing active self-ligating bracket structure basically adopts a SPEED form or a flip-cover form structure. The biggest advantage of this structure bracket is that it can achieve a passive ligation function when a thin round wire is used in the early treatment, and an active ligation function can be achieved when a thick wire is used. For example, a Chinese patent document with publication number CN209751255U discloses a self-ligating bracket for orthodontics, comprising an orthodontic bracket body, a sliding cover, a pin, an elastic component and a mesh bottom, wherein the orthodontic bracket body is provided with a groove capable of accommodating an orthodontic dental arch wire, and a first ligation wing and a second ligation wing are respectively provided on both sides of the groove, the first ligation wing is provided with a guide groove for the sliding cover to slide, the sliding cover is installed in the guide groove and the sliding direction is perpendicular to the direction of the groove, the bottom of the guide groove is provided with a hole for the pin to pass through, the bottom of the sliding cover is provided with a blind hole, the blind hole is in the shape of "只", the elastic component is embedded in the blind hole, the elastic component is a spring sheet or a spring pin, and the shape is "︺" or "V", the mesh bottom is provided on the back of the orthodontic bracket body, and the orthodontic dental arch wire is fixed in the groove on the orthodontic bracket body after the sliding cover is closed.

[0003] The inventors have found that the biggest problem with the above-mentioned self-ligating brackets with active ligation function is that the cover plates are easily damaged after being subjected to force in clinical practice; at the same time, due to their complex structures, it is difficult for patients to clean the self-ligating brackets during daily use, and there is room for improvement. Summary of the invention

[0004] In order to solve the above technical problems, the present application discloses a self-ligating orthodontic bracket, comprising a mesh base, wherein the top side of the mesh base has two fixing ears, and each fixing ear and the mesh base are an integral structure or a split fixing structure;

[0005] Each fixing ear is provided with an archwire hole for allowing the dental archwire to pass through. The archwire hole is a fully closed structure in the circumferential direction or has an open area in part. The archwire holes on the two fixing ears are arranged oppositely to form an archwire threading channel.

[0006] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0007] Optionally, the fixing ear is an elastic ring.

[0008] Optionally, each elastic ring includes a fixed side connected to the mesh bottom and an extended side extending away from the mesh bottom; the two elastic rings gradually move away from each other, extend equidistantly, or approach each other from the fixed side to the extended side.

[0009] Optionally, the arch wire hole includes:

[0010] A guiding portion, located on the side of the arch wire hole away from the mesh bottom and allowing relative movement of the arch wire;

[0011] An engaging portion, located on the side of the arch wire hole close to the mesh bottom and engaging with the arch wire.

[0012] Optionally, the bottom side width of the guiding portion gradually converges until it abuts against the engaging portion, and the engaging portion extends with a constant width and the width is adapted to the size of the arch wire.

[0013] Optionally, the axial directions of the two arch wire holes are arranged at an included angle.

[0014] Optionally, the middle part of the top side of the mesh bottom bulges and smoothly transitions from the middle to both sides to form two transition surfaces, and the two fixed ears are respectively arranged on the two transition surfaces; the axial direction of each arch wire hole is substantially parallel to the transition surface where it is located.

[0015] The present application also discloses an orthodontic device, including the self-locking orthodontic bracket according to the above technical solution and a ligature wire arranged on the self-locking orthodontic bracket;

[0016] A widened portion protruding relative to the bottom side is provided on the top side or the middle part of the fixed ear, the ligature wire hugs at least one fixed ear, and the ligature wire is pushed by the widened portion to drive the arch wire to abut against the top side of the mesh bottom.

[0017] Optionally, the ligature wire hugs the two fixed ears, and the sides of the two fixed ears away from the mesh bottom move away from each other to urge the ligature wire to move towards the mesh bottom direction.

[0018] The present application also discloses an orthodontic device system, including the self-locking orthodontic bracket according to the above technical solution, a ligature wire arranged on the self-locking orthodontic bracket, and an arch wire threaded through the self-locking orthodontic bracket; the arch wire applies a corrective force through the self-locking orthodontic bracket.

[0019] The technical solution disclosed in the present application replaces the slot body in the traditional self-locking bracket through the design of the fixed ear, thereby avoiding the influence of the complex structure on production manufacturing and daily use and cleaning; at the same time, the structure of the fixed ear can overcome the problem that the lock piece in the traditional technical solution is prone to failure, thereby bringing a stable and convenient use experience to the patient.

[0020] Specific beneficial technical effects will be further explained in combination with specific structures or steps in the specific implementation manner. Description of the Drawings

[0021] Figures 1a to 1d It is a schematic diagram of a self-locking orthodontic bracket in an embodiment;

[0022] Figure 2 It is a schematic diagram of a correction device in an embodiment;

[0023] Figure 3a and Figure 3b It is a schematic diagram of a correction device system in an embodiment.

[0024] The descriptions of the reference numerals in the drawings are as follows:

[0025] 1. Mesh bottom; 11. Transition surface;

[0026] 2. Fixed ear; 21. Arch wire hole; 211. Guide part; 212. Engaging part; 22. Arch wire threading channel; 23. Fixed side; 24. Extended side;

[0027] 3. Ligature wire;

[0028] 4. Arch wire. Detailed Description of the Embodiments

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0030] It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of the present application in this specification are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] Referring to Figures 1a to 1d , the present application discloses a self-locking orthodontic bracket, including a mesh bottom 1. Two fixed ears 2 are provided on the top side of the mesh bottom 1. Each fixed ear 2 and the mesh bottom 1 are of an integral structure or a split fixed structure;

[0033] Each fixing ear 2 is respectively provided with an arch wire hole 21 allowing the arch wire 4 to pass through. The circumferential direction of the arch wire hole 21 is a fully enclosed structure or partially has an open area. The arch wire holes 21 on the two fixing ears 2 are arranged oppositely to form an arch wire threading channel 22.

[0034] The fixing ear 2 plays the role of the slot body in the traditional self-locking bracket, which can restrain the arch wire 4 and transfer the acting force of the arch wire 4 to the teeth to achieve the orthodontic effect. The fixing ear 2 itself can realize the restraint of the arch wire 4, so there is no need to set a cover plate in the traditional self-locking bracket, avoiding the problem that the cover plate is prone to failure after multiple openings and closings, and improving the stability of the self-locking orthodontic bracket. Correspondingly, due to the change of the structure, the problem of the complex structure of the traditional self-locking bracket is avoided, which is convenient for cleaning and maintenance, and is easier to operate during the daily wearing process of the patient, improving the user experience.

[0035] In different treatment processes, in order to meet different orthodontic needs, the fixing ear 2 may have various deformations, such as changes in the extension direction, changes in the opening form, etc. Including in terms of materials, the fixing ear 2 can also be adjusted accordingly. Referring to an embodiment, the fixing ear 2 is an elastic ring. The fixing ear 2 can realize the function of the elastic ring through nickel-titanium material. The elastic ring can utilize its own elasticity to achieve more orthodontic effects. For example, it can generate a positive pressure on the appropriately thick arch wire 4, facilitating the torque transmission of the arch wire 4; for another example, it can realize the active self-locking of the arch wire 4, thus realizing the functions of the traditional self-locking bracket, etc.

[0036] In terms of the shape of the fixing ear 2, referring to an embodiment, each elastic ring includes a fixed side 23 connected to the mesh bottom 1 and an extended side 24 extending away from the mesh bottom 1; the two elastic rings gradually move away from each other, extend equidistantly, or approach each other from the fixed side 23 to the extended side 24.

[0037] The fixed side 23 is used to transfer the torque between the fixing ear 2 and the mesh bottom 1, and the extended side 24 can facilitate the installation and cooperation of components. Referring to the technical solution in the accompanying drawings, the elastic force of the elastic ring is realized through the deformation of the extended side 24 relative to the fixed side 23. In different treatment processes, the arrangement form between the two fixing ears 2 can change in various ways. For example, the two elastic rings shown in the accompanying drawings gradually move away from each other from the fixed side 23 to the extended side 24, or the two elastic rings extending equidistantly or approaching each other from the fixed side 23 to the extended side 24 not shown in the accompanying drawings can also be used.

[0038] The core purpose of different arrangements between the two fixing ears 2 is to better transfer the stress of the arch wire 4 to the mesh bottom 1. The part of the fixing ear 2 in direct contact with the arch wire 4 is the arch wire hole 21. In the setting of the arch wire hole 21, referring to an embodiment, the arch wire hole 21 includes:

[0039] The guiding portion 211 is located on the side of the arch wire hole 21 away from the mesh base 1 and allows the arch wire 4 to move relatively;

[0040] The engaging portion 212 is located on the side of the arch wire hole 21 close to the mesh base 1 and engages with the arch wire 4.

[0041] The function of the guiding portion 211 is to more conveniently thread the arch wire 4, facilitating the work of operators such as clinicians. The function of the engaging portion 212 is to bear the moments of the arch wire 4 in multiple directions to achieve the orthodontic process. To achieve the above functions, the shapes of both also need to be adjusted accordingly. Further, referring to an embodiment, the bottom width of the guiding portion 211 gradually converges until it docks with the engaging portion 212, and the engaging portion 212 extends with a constant width and the width is adapted to the size of the arch wire 4.

[0042] The internal shape and size of the guiding portion 211 are larger than the external shape and size of the arch wire 4, thus allowing the threading of the arch wire 4; the width dimension of the engaging portion 212 is adapted to the size of the arch wire 4 to bear the stresses in all directions. The guiding portion 211 and the engaging portion 212 are interconnected and smoothly transition, thus allowing the arch wire 4 to move between the two to meet the usage requirements in different states. In the illustrated scheme, the width dimension of the engaging portion 212 refers to the position shown as D1 in the figure, and the overall cross-sectional shape of the engaging portion 212 also presents a roughly rectangular shape, thus cooperating with the arch wire 4 of a suitable size.

[0043] In addition to the constraint of the shape of the arch wire hole 21 itself on the arch wire 4, the mutual relationship between the arch wire holes 21 on the two fixing ears 2 will also generate stress on the arch wire 4. Referring to an embodiment, the axial directions of the two arch wire holes 21 are set at an angle.

[0044] When the axial directions of the two arch wire holes 21 are set at an angle, the arch wire holes 21 can generate prestress on the arch wire 4, thus better transmitting the stress of the arch wire 4 to the mesh base 1. Combining with the attached drawings, the angle between the axial directions of the two arch wire holes 21 is shown as angle A. This angle can be achieved by the inclined setting of the arch wire holes 21 on the surface of the fixing ear 2, or by the self-inclination of the fixing ear 2. Specifically referring to an embodiment, the middle part of the top side of the mesh base 1 bulges and smoothly transitions from the middle to both sides to form two transition surfaces 11, and the two fixing ears 2 are respectively arranged on the two transition surfaces 11; the axial direction of each arch wire hole 21 is substantially parallel to the corresponding transition surface 11. The advantage of this embodiment is that the arch wire holes 21 are perpendicular to the surface of the fixing ear 2, which is easy to process, and the two fixing ears 2 form a certain angle with each other, thus being able to meet the usage requirements of other components.

[0045] Refer to Figure 2 This application also discloses an orthodontic device, including the self-locking orthodontic bracket according to the above technical solution and a ligature wire 3 arranged on the self-locking orthodontic bracket;

[0046] The top side or middle part of the fixing ear 2 is provided with a widened portion protruding relative to the bottom side, and the ligature wire 3 embraces at least one fixing ear 2. The ligature wire 3 is pushed by the widened portion to drive the dental arch wire 4 to abut against the top side of the mesh bottom 1.

[0047] The widened portion can be an independent component, or can be formed by extending the material of the fixing ear 2 itself, or can be widened in size of the fixing ear 2 itself as shown in the figure. The widened portion can drive the ligature wire 3, ensure its pressure on the dental arch wire 4, and realize the passive ligation function.

[0048] In addition to being driven by the widened portion, the ligature wire 3 can also be driven by the arrangement of the two fixing ears 2. Referring to an embodiment, the ligature wire 3 embraces the two fixing ears 2, and the two fixing ears 2 are away from the side of the net bottom 1 to move the ligature wire 3 toward the net bottom 1.

[0049] The two fixing ears 2 that are away from the side of the net bottom 1 move away from each other, which actually acts as the left and right of the widened part, thereby driving the ligature wire 3 to move toward the net bottom 1. Referring to the embodiment in the attached drawings, the ligature wire 3 actually receives two forces, one is the driving force generated by the two fixing ears 2 moving away from each other, and the other is the driving force of the widened part formed by the widening of the fixing ears 2 themselves.

[0050] In this embodiment, the two fixed ears 2 are away from each other on one side of the mesh bottom 1, which may cause inconvenience when installing the dental arch wire 4. Therefore, an annular bridge frame (not shown) can also be provided to assist in the installation of the dental arch wire 4. The annular bridge frame is installed from the gingival jaw side of the fixed ear 2, and can support the fixed ear 2 before the dental arch wire 4 enters the arch wire hole 21, so as to facilitate the installation of the dental arch wire 4. Before the dental arch wire 4 is inserted into the fixed ear 2, the fixed ear 2 is supported on the annular bridge frame. After the dental arch wire 4 is inserted into the fixed ear 2, a special tool is inserted into the fixed ear 2 and then rotated to open the fixed ear 2 and detach from the annular bridge frame, directly pressing on the dental arch wire 4, and the dental arch wire 4 is continuously and gently pressed into the clamping portion 212 by the elastic force of the fixed ear 2 itself. In a specific product, an inclined guide slope can also be provided on the fixed ear 2 to facilitate the dental arch wire 4 to enter the groove.

[0051] In actual use, combined with specific clinical data, the present application exemplarily gives a reference size. When the diameter of the dental arch wire 4 is ≤0.016", the fixing ear 2 will not form pressure on the dental arch wire 4. When the size of the dental arch wire 4 is greater than 0.020", the fixing ear 2 will generate pressure on the dental arch wire 4.

[0052] refer to Figures 3a to 3b, this application also discloses an orthodontic device system, including the self-locking orthodontic bracket in the above technical solution, a ligature wire 3 arranged on the self-locking orthodontic bracket, and an arch wire 4 threaded through the self-locking orthodontic bracket; the arch wire 4 applies a corrective force through the self-locking orthodontic bracket.

[0053] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification. When the technical features in different embodiments are embodied in the same drawing, it can be regarded that the drawing also discloses the combination examples of the various embodiments involved.

[0054] The above-described embodiments only represent several implementation manners of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application.

Claims

1. Self-locking orthodontic bracket, including a mesh base, Characterized in that, Two fixing ears are provided on the top side of the mesh base, and each fixing ear and the mesh base are of an integral structure or a split fixing structure; Each fixing ear is respectively provided with an arch wire hole allowing the arch wire to pass through. The circumferential direction of the arch wire hole is a fully enclosed structure or partially provided with an open area. The arch wire holes on the two fixing ears are oppositely arranged to form an arch wire threading channel; The arch wire hole includes: A guiding part, located on the side of the arch wire hole away from the mesh base and allowing relative movement of the arch wire; An engaging part, located on the side of the arch wire hole close to the mesh base and engaging with the arch wire; The guiding part and the engaging part are communicated with each other and smoothly transition.

2. The self-locking orthodontic bracket according to claim 1, Characterized in that, The fixing ear is an elastic ring.

3. The self-locking orthodontic bracket according to claim 2, Characterized in that, Each elastic ring includes a fixed side connected to the mesh base and an extended side extending away from the mesh base; The two elastic rings gradually move away from each other, extend at equal distances or approach each other from the fixed side to the extended side.

4. The self-locking orthodontic bracket according to claim 1, Characterized in that, The bottom side width of the guiding part gradually converges until it docks with the engaging part, and the engaging part extends with equal width and the width is adapted to the size of the arch wire.

5. The self-locking orthodontic bracket according to claim 1, Characterized in that, The axial directions of the two arch wire holes are arranged at an angle.

6. The self-locking orthodontic bracket according to claim 1, Characterized in that, The middle part of the top side of the mesh base bulges and smoothly transitions from the middle part to both sides to form two transition surfaces, and the two fixing ears are respectively arranged on the two transition surfaces; The axial direction of each arch wire hole is substantially parallel to the transition surface where it is located.

7. Correction device, Characterized in that, It includes the self-locking orthodontic bracket according to any one of claims 1 to 6 and a ligature wire arranged on the self-locking orthodontic bracket; A widened part protruding relative to the bottom side is provided on the top side or the middle part of the fixing ear. The ligature wire hugs at least one fixing ear, and the ligature wire is pushed by the widened part to drive the arch wire to abut against the top side of the mesh base.

8. The correction device according to claim 7, Characterized in that, The ligature wire hugs the two fixing ears, and the sides of the two fixing ears away from the mesh base move away from each other to tend to drive the ligature wire to move towards the mesh base direction.

9. Correction device system, Characterized in that, It includes the self-locking orthodontic bracket according to any one of claims 1 to 6, a ligature wire arranged on the self-locking orthodontic bracket, and an arch wire threaded through the self-locking orthodontic bracket; The arch wire applies a correction force through the self-locking orthodontic bracket.

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