Self-ligating brackets, double-wing adjustable brackets and dental braces

Abstract

The present invention provides a self-ligating bracket, a bracket with adjustable wing spacing, and a dental brace. The self-ligating bracket comprises: a bracket base plate; a first end of a first elastic bracket is connected to the bracket base plate; a bracket body is a hollow structure, a second end of the first elastic bracket is connected to the distal end of the bracket body, a gap is provided at the distal end of the bracket body, and the distal end of the bracket body is radially stretched open by the second end of the first elastic bracket; a limiting component is movably arranged along the axial direction of the bracket body, and the limiting component is sleeved on the outer side of the bracket body, and is used to overcome the elastic force provided by the first elastic bracket and make the bracket body contract radially. The self-ligating bracket, the bracket with adjustable wing spacing, and the dental brace of the present invention can realize that the critical clearance angle between the correction arch wire and the groove can be adjusted in both the labial and lingual directions and the gingival directions; the patient can manually adjust the clearance by himself, so as to meet the needs of different correction stages, reduce the number of follow-up visits for patients, and improve the correction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of dental orthodontics, and in particular to a self-ligating bracket, a bracket with adjustable double-wing spacing, and a dental orthodontic appliance. Background Art

[0002] At present, there are two types of orthodontic brackets on the domestic and foreign markets: ligature type and self-ligation type. Ligature type brackets use ligature wires or ligature rings to bind the correction arch wire in the bracket groove; while self-ligation brackets use slotted covers to restrict the arch wire in the groove, so there is usually a clearance between the arch wire and the cover. There are two designs of cover plates for self-ligation brackets. One is inelastic, and the cover plate will not actively exert pressure on the arch wire, which is called a passive self-ligation bracket; the other is elastic, and when the arch wire size exceeds the minimum limit allowed by the elastic cover plate, it will exert pressure on the arch wire, which is called an active self-ligation bracket. Whether it is a passive self-ligation bracket or an active self-ligation bracket, the clearance between the arch wire and the cover plate is larger than that of a ligature bracket. The larger the clearance, the larger the critical clearance angle for the deformation of the arch wire. Once the angle between the arch wire and the groove is greater than the critical clearance angle, the arch wire begins to deform elastically, and the friction resistance will further increase. Therefore, from a mechanical point of view, the friction of self-ligating brackets is lower than that of ligated brackets because of the large critical clearance angle. On the other hand, the large critical clearance angle means that the archwire will not be elastically deformed when the teeth are slightly misaligned, which means that the correction force on the teeth is small. Therefore, the control ability of self-ligating brackets over tooth position is weaker than that of ligated brackets. Self-ligating brackets are clinically used in the early stage of orthodontic treatment because of their low friction and faster crowding relief. However, in the later stage of orthodontic treatment when the teeth need to be completely aligned, the efficiency of accurate tooth alignment is reduced because of the large clearance between self-ligating brackets and the archwire. Therefore, the research results of modern evidence-based medicine do not support that self-ligating brackets can improve the efficiency of tooth correction.

[0003] Therefore, how to improve the correction efficiency at each stage of orthodontics is an urgent problem to be solved. Summary of the invention

[0004] The present invention provides a self-ligating bracket, a bracket with adjustable double-wing spacing, and a dental orthodontic appliance, which are used to solve the problem of how to improve the efficiency of dental orthodontic treatment in the prior art.

[0005] The present invention provides a self-ligating bracket, comprising:

[0006] Bracket base plate;

[0007] A first elastic bracket, wherein a first end of the first elastic bracket is connected to the bracket bottom plate;

[0008] A bracket body, wherein the bracket body is a hollow structure, the second end of the first elastic bracket is connected to the distal end of the bracket body, a gap is provided at the distal end of the bracket body, and the distal end of the bracket body is radially expanded by the second end of the first elastic bracket;

[0009] The limiting component is movably arranged along the axial direction of the bracket body, and the limiting component is sleeved on the outer side of the bracket body, and is used to overcome the elastic force provided by the first elastic support and make the bracket body contract radially.

[0010] According to a self-ligating bracket provided by the present invention, the bracket body includes a first platform and a second platform that are symmetrically arranged, the first platform and the second platform are correspondingly arranged and are supported by the first elastic bracket to form a truncated cone structure, and the gap is located between the first platform and the second platform.

[0011] According to a self-locking bracket provided by the present invention, the limiting component is a threaded member, the outer side of the bracket body is provided with an axial external thread, the threaded member is provided with an internal thread adapted to the external thread, and the threaded member is meshedly connected to the bracket body through the internal thread and the external thread.

[0012] A self-ligating bracket provided according to the present invention further includes a second elastic bracket, wherein a first end of the second elastic bracket is connected to the bracket bottom plate, and a second end of the second elastic bracket is supported on the proximal end of the bracket body and radially expands the first platform and the second platform at the proximal end to form a gap for inserting a corrective arch wire.

[0013] According to a self-ligating bracket provided by the present invention, the first elastic bracket is a cross structure, the first end of the second elastic bracket is an "eight"-shaped structure, and the second end of the second elastic bracket is a vertical structure.

[0014] According to a self-ligating bracket provided by the present invention, the cross-section of the hollow structure of the proximal end of the bracket body is circular, the cross-section of the hollow structure of the distal end of the bracket body is rectangular, and the hollow structure of the bracket body from the proximal end to the distal end gradually changes from circular to rectangular.

[0015] According to a self-ligating bracket provided by the present invention, a first scale mark is provided on the outer wall of the limiting component along the circumferential direction, and / or,

[0016] A second scale mark is axially arranged on the outer wall of the bracket body.

[0017] According to a self-ligating bracket provided by the present invention, the limiting component is a C-shaped structure, and the outer wall of the limiting component forms a rough surface and / or is provided with a hole for inserting a needle-shaped tool.

[0018] The present invention further provides a double-wing spacing adjustable bracket, comprising two self-ligating brackets of the present invention, wherein the self-ligating brackets are axially correspondingly arranged.

[0019] The present invention further provides a dental brace, comprising: a correction arch wire and a plurality of self-ligating brackets of the present invention or double-wing spacing adjustable brackets of the present invention, wherein the correction arch wire passes through the interior of adjacent bracket bodies in sequence.

[0020] The self-ligating bracket provided by the present invention uses a bracket bottom plate as a support, connects the bracket bottom plate and the bracket body through a first elastic bracket, and provides elastic force to the distal end of the bracket body to open a certain gap in the radial direction, and uses a limiting component to move along the axial direction of the bracket body, and allows the bracket body to overcome the elastic force provided by the first elastic bracket, so that the bracket body contracts in the radial direction. The self-ligating bracket provided by the present invention can realize the critical clearance angle between the labial and lingual groove and the arch wire by axial movement of the limiting component, and can realize the occlusal gingival size adjustment by adjusting the bracket body to open or contract radially through the limiting component and the first elastic bracket, so as to accurately adjust the clearance between the correction arch wire and the bracket body, and the adjustable clearance can be made larger when low friction is required, and smaller when precise control of tooth position is required; in addition, by using the self-ligating bracket of the present invention, the defect of frequently replacing the correction arch wire can be avoided. Under the guidance of a doctor, the patient can manually adjust the clearance by himself, so as to meet the needs of different correction stages, reduce the number of follow-up visits of patients, improve the correction efficiency, and improve the economy.

[0021] Furthermore, the present invention also provides a bracket with adjustable double-wing spacing, which adopts a bracket structure with adjustable double-wing spacing, and the critical clearance angle between the bracket groove and the archwire is adjustable in the labio-lingual direction and the occlusal-gingival direction, and the size of the friction force and the torsional force can be adjusted according to clinical needs, thereby reducing the number of follow-up visits and improving the correction efficiency.

[0022] Furthermore, the present invention also provides a dental brace, which includes the above-mentioned self-ligating bracket or double-wing adjustable spacing bracket, and therefore has the same advantages as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of the self-ligating bracket provided by the present invention;

[0025] Figure 2 is a schematic cross-sectional view of the distal end of the bracket base plate provided by the present invention;

[0026] Figure 3 is a schematic cross-sectional view of the proximal end of the bracket base plate provided by the present invention;

[0027] Figure 4 is a schematic cross-sectional view of a limiting component provided by the present invention;

[0028] Figure 5 is a top view schematic diagram of a double-wing spacing adjustable bracket provided by the present invention;

[0029] Figure 6 It is a structural schematic diagram of a double-wing spacing adjustable bracket provided by the present invention.

[0030] Reference numerals:

[0031] 1: bracket bottom plate; 2: first elastic bracket; 3: bracket body;

[0032] 301: distal end; 302: proximal end; 4: limiting component;

[0033] 5: second elastic bracket; 311: first platform; 312: second platform;

[0034] 401: Hole. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Combine the following Figure 1-Figure 4 The present invention describes a self-ligating bracket, which comprises a bracket base plate 1 , a first elastic bracket 2 , a second elastic bracket 5 , a bracket body 3 and a limiting component 4 .

[0037] The bracket base plate 1 serves as the bottom support of the entire self-ligating bracket, and the bracket base plate 1 is adhered to the teeth.

[0038] The first ends of the first elastic bracket 2 and the second elastic bracket 5 are welded to the bracket bottom plate 1, and the second ends are welded to the bracket body 3. The elastic bracket can be made of elastic materials such as thick nickel-titanium wire or plastic, which has a certain elasticity. The bracket supported by the elastic material can, on the one hand, open the gap between the bracket bodies 3 and cooperate with the limiting component 4 to adjust the groove size; on the other hand, when using a harder correction archwire such as a stainless steel thick archwire, the elastic bracket helps to buffer the excessive correction force and transfer part of the correction force to the elastic bracket, so that the correction process is gentle and continuous; on the third hand, when there is a large unexpected stress acting on the bracket body 3 (such as biting hard food), the elastic bracket can provide a certain buffering function to reduce the bracket shedding rate.

[0039] The bracket body 3 is a hollow structure. The second end of the second elastic bracket 5 is connected to the proximal end 302 of the bracket body 3. The bracket radially expands the proximal end 302 of the bracket body 3 to a groove gap of 0.018±0.004 inches. The size of the gap should be sufficient to allow the thickest correction arch wire to be inserted. The second end of the first elastic bracket 2 is connected to the distal end 301 of the bracket body 3. The distal end 301 of the bracket body 3 is provided with a gap and the distal end 301 of the bracket body 3 is radially expanded by the second end of the first elastic bracket 2. The expanded gap is larger than the gap at the proximal end. The correction arch wire can pass through the hollow structure of the bracket body 3 and is fixed by the inner wall of the bracket body 3. Generally, the proximal end 302 of the bracket body 3 is defined as the position close to the center of the tooth, and the distal end 301 of the bracket body 3 is defined as the position far from the center of the tooth. A gap is provided in the axial direction at the distal end 301 of the bracket body 3, so that the distal end 301 can be opened by the force provided by the first elastic support 2. It should be understood that, generally speaking, under the action of the first elastic support 2 and the second elastic support 5, the outer diameter of the proximal end 302 of the bracket body 3 should be smaller than the outer diameter of the distal end 301 of the bracket body 3, but the clearance exists between the inner wall of the bracket body 3 and the correction archwire, therefore, the wall thickness of the distal end 301 and the proximal end 302 can be appropriately adjusted, and it is ensured that the limiting component 4 has sufficient radial limiting effect on the outer wall of the proximal end 302 and the distal end 301.

[0040] The limiting component 4 is movably arranged along the axial direction of the bracket body 3, and the limiting component 4 is sleeved on the outer side of the bracket body 3, and is used to overcome the elastic force provided by the elastic support and make the bracket body 3 contract radially. The starting position of the limiting component 4 is located at the proximal end 302 of the bracket body 3, and the limiting component 4 is gradually moved toward the distal end 301. Under the influence of the action of the limiting component 4, the gap between the two semi-cylindrical bracket bodies is gradually reduced, thereby reducing the clearance between the correction arch wire and the bracket body 3. It should be understood that in this embodiment, the limiting component 4 is moved along the axial direction of the bracket body 3, and then the bracket body 3 is radially limited, and the clearance between the correction arch wire and the bracket body 3 is adjusted. Specifically, the limiting component 4 and the bracket body 3 can be connected by a threaded connection, and when the limiting component 4 is rotated, it can move along the axial direction of the bracket body 3.

[0041] The self-locking bracket provided by the present invention uses a bracket base plate 1 as a support, connects the bracket base plate 1 and the bracket body 3 through an elastic bracket, and provides elastic force to the bracket body to radially open a certain gap between the proximal end 302 and the distal end 301 (the gap at the distal end is larger than that at the proximal end), utilizes the limiting component 4 to move along the axial direction of the bracket body 3, and enables the bracket body 3 to overcome the elastic force provided by the elastic bracket, thereby causing the bracket body 3 to contract radially. The self-ligating bracket provided by the present invention can achieve adjustable critical clearance angle between the labiolingual groove and the arch wire by axial movement of the limiting component 4, and can achieve adjustable occlusal and gingival dimensions by adjusting the bracket body 3 to open or contract radially through the limiting component 4 and the elastic bracket, thereby accurately adjusting the clearance between the correction arch wire and the bracket body 3, and the adjustable clearance can be made larger when low friction is required, and smaller when precise control of tooth position is required; in addition, by using the self-ligating bracket of the present invention, the defect of frequent replacement of correction arch wires can be avoided. Under the guidance of a doctor, the patient can manually adjust the clearance by himself, thereby meeting the needs of different correction stages, reducing the number of follow-up visits for patients, improving correction efficiency, and improving economy.

[0042] In one embodiment of the present invention, the bracket body 3 is composed of a plurality of monomers, which are arranged circumferentially, and a gap is arranged between two adjacent monomers. For example, the bracket body 3 includes a first platform 311 and a second platform 312 which are symmetrically arranged, and the first platform 311 and the second platform 312 are arranged correspondingly and are supported by an elastic bracket to form a truncated cone structure, and the gap is located between the first platform 311 and the second platform 312. Figure 1As shown, in this embodiment, the first platform 311 and the second platform 312 are half structures, and when the two are separated, a truncated cone structure is formed in which the outer diameter of the proximal end 302 is smaller than the outer diameter of the distal end 301, wherein the initial position of the limiting component 4 is sleeved on the proximal end 302, and ensures that there is a labial gap between the first platform 311 and the second platform 312 of the proximal end 302 to allow the thickest corrective arch wire to be inserted. In this embodiment, the distal end 301 and the proximal end 302 can be designed with equal wall thickness, so when the limiting component 4 is away from the distal end 301, the outer diameter of the distal end 301 is greater than the outer diameter of the proximal end 302, which also means that the inner diameter of the distal end 301 is greater than the inner diameter of the proximal end 302. As the limiting component 4 approaches the distal end 301, the gap continues to shrink, the inner diameter of the distal end 301 continues to tighten, and the critical clearance angle between the correction archwire and the inner wall of the bracket body 3 is correspondingly reduced, and the control ability of the tooth position will become stronger and stronger; when the limiting component 4 moves to the distal end 301, the diameters of the distal end 301 and the proximal end 302 of the bracket body 3 are equal, and the bracket body 3 forms a cylindrical structure. The first platform 311 and the second platform 312 can be made of materials such as nickel titanium or plastic.

[0043] In one embodiment of the present invention, the limiting component 4 is a threaded member, the outer side of the bracket body 3 is provided with an external thread spirally arranged along the axial direction, the threaded member is provided with an internal thread adapted to the external thread, and the threaded member is connected to the bracket body 3 by meshing the internal thread and the external thread. In this embodiment, the limiting component 4 is connected to the bracket body 3 by internal and external threads, and when the limiting component 4 is rotated, it can move along the axial direction of the bracket body 3. It should be understood that there should be a certain resistance in the threaded connection between the limiting component 4 and the bracket body 3 to avoid the rotation of the limiting component 4 due to brushing or foreign objects touching the limiting component 4. Of course, the limiting component 4 and the bracket body 3 can also be connected by a plurality of snap-fit ​​components arranged along the axial direction of the bracket body 3, that is, the inner wall of the limiting component 4 is provided with a recess, and the outer wall of the bracket body 3 is provided with a protrusion, and the axial positioning of the limiting component 4 in the bracket body 3 is achieved by the clamping between the protrusion and the recess, and the limiting component 4 also has a radial limiting effect on the bracket body 3.

[0044] When a larger friction force is needed, the positive rotation limit component 4 moves it toward the distal end 301, the bracket body 3 is continuously tightened, and the critical clearance angle between the correction arch wire and the bracket body 3 is correspondingly reduced, and the control ability of the tooth position will become stronger and stronger. Generally, when a double-wing spacing adjustable bracket structure is adopted, when the limit component 4 moves toward the distal end 301, the distance between the two limit components 4 is also increased, and the critical clearance angle between the correction arch wire and the bracket body 3 can also be reduced, so that the angle between the correction arch wire and the bracket body 3 is more likely to exceed the critical clearance angle and elastically deform, thereby increasing the ability to align teeth. Conversely, when the friction force needs to be reduced, the reverse rotation limit component 4 moves it toward the proximal end 302, so that the distal end 301 opens under the action of the first elastic bracket 2, the size of the groove is increased, and the clearance between the correction arch wire and the bracket body 3 is increased. When both limit components 4 move toward the proximal end 302, the distance between the two limit components 4 can be reduced, and the critical clearance angle is increased.

[0045] In one embodiment of the present invention, the self-locking bracket further includes a second elastic bracket 5, the first end of the second elastic bracket 5 is connected to the bracket base plate 1, the second end of the second elastic bracket 5 is supported on the proximal end 302 of the bracket body 3, and the second elastic bracket 5 opens the first platform 311 and the second platform 312 at the proximal end 302 to allow the correction wire to be inserted. In this embodiment, the second elastic bracket 5 is connected between the bracket base plate 1 and the bracket body 3 by welding, and is mainly used to support the proximal end 302. It can also be made of elastic materials such as thick nickel-titanium wire. When the correction wire uses hard stainless steel wire, the first elastic bracket 2 and the second elastic bracket 5 help alleviate the problem of excessive correction force and transfer part of the correction performance of the correction wire to the elastic bracket. It should be understood that the bracket base plate 1, the first elastic bracket 2 and the second elastic bracket 5 can be manufactured as a whole or in the above-mentioned welding method, and the present invention is not limited to the connection relationship and manufacturing process of the three.

[0046] In one embodiment of the present invention, the cross-section of the hollow structure of the proximal end 302 of the bracket body 3 is a circle with a diameter of 0.025±0.003 inches, and the cross-section of the hollow structure of the distal end 301 of the bracket body 3 is a rectangle with a diameter of 0.018*0.025~0.022*0.028 inches, and the hollow structure of the bracket body 3 from the proximal end 302 to the distal end 301 gradually changes from a circle to a rectangle to accommodate the thick square wire commonly used in orthodontics. The design of the ramp gradient from the thick round tube at the proximal end 302 to the rectangular tube opening at the distal end 301 is that the hollow structure of the bracket body 3 gradually decreases from the proximal end 302 to the distal end 301, and finally becomes a rectangular tube opening. The above is an example of a double-wing spacing adjustable bracket structure. If a single-wing bracket structure is adopted, the cross-sections of the hollow structures at the proximal end and the distal end are both rectangular and have the same size.

[0047] In one embodiment of the present invention, a first scale mark is provided on the outer wall of the limiting component 4 along the circumferential direction, and / or a second scale mark is provided on the outer wall of the bracket body 3 along the axial direction. In this embodiment, in order to facilitate observation of the position of the limiting component 4, it can be characterized by the first scale mark and / or the second scale mark, thereby measuring the tightening degree of the bracket body 3. The doctor can guide the patient to achieve the effect of moving the teeth by appropriately adjusting the position of the limiting component 4 at different stages of correction.

[0048] In one embodiment of the present invention, Figure 4 As shown, the limiting component 4 is a C-shaped structure, and the outer wall of the limiting component 4 forms a rough surface and / or is provided with a hole 401 for inserting a needle-shaped tool. In this embodiment, the C-shaped structure is a circular ring structure with a notch formed on the upper part. When the limiting component 4 is installed to the proximal end 302, the notch of the C-shaped structure is positioned toward the lip, which, on the one hand, facilitates the insertion of the correction arch wire from the limiting component 4 into the hollow structure of the bracket body 3; on the other hand, the first elastic bracket 2 can be arranged as a cross structure (such as Figure 2 The first end of the second elastic bracket 5 is an "eight"-shaped structure, and the second end is a vertical structure, so that the "C"-shaped structure of the limiting component can be inserted from this end and assembled on the bracket body, (such as Figure 3 (As shown in the figure), the two branches of the second elastic bracket 5 are respectively connected to the first platform 311 and the second platform 312. When the limiting component 4 is set by the proximal end 302, the notch position of the C-shaped structure can pass through the vertical structure of the second elastic bracket 5, and when it moves to the distal end 301, it is blocked by the first elastic bracket 2 to prevent the limiting component 4 from being separated from the distal end 301. Of course, the first elastic bracket 2 can also be a non-cross structure, as long as it meets the function of blocking and limiting the limiting component 4. Moreover, the cross structure of the first elastic bracket 2 and the "eight"-shaped structure of the second elastic bracket 5 extend the bracket length and further increase the buffering performance. In order to facilitate the patient to adjust the limiting component 4 by himself, the outer wall of the limiting component 4 is provided with a rough surface such as stripes to increase friction, so as to operate and rotate. A special tool can also be used to insert it into the elongated hole 401 of the outer wall, operate the tool, and rotate the limiting component 4.

[0049] In addition, if Figure 2 and Figure 3 As shown, the bracket body 3 is configured with an arc-shaped portion at a position adjacent to the hollow structure so that the correction arch wire can enter the hollow structure.

[0050] like Figure 5 and Figure 6As shown, the present invention further provides a double-wing spacing adjustable bracket, comprising two self-ligating brackets provided according to the present invention, and the self-ligating brackets are axially correspondingly arranged on one tooth.

[0051] Specifically, the double-wing spacing adjustable bracket of the present embodiment is composed of two self-ligating brackets. During the adjustment process, the limiting components 4 of the two self-ligating brackets can be adjusted at the same time to form a double-wing spacing adjustable bracket structure, or the limiting component 4 of one of the self-ligating brackets can be fixed at the proximal end 302 position of the C-shaped opening facing the lip gap, and only the limiting component 4 of the other self-ligating bracket is adjusted to form a single-wing bracket structure.

[0052] It should be understood that the double-wing adjustable spacing bracket provided in the present embodiment is two self-ligating brackets fixed on one tooth to fix the corrective arch wire, and the self-ligating brackets of the above-mentioned embodiment can also be used alone (i.e., single-wing bracket), that is, one self-ligating bracket is fixed on one tooth to fix the corrective arch wire. One of the above-mentioned single-wing or double-wing adjustable spacing brackets can be selected for correction according to actual needs.

[0053] In addition, it should be understood that the "wing" in the "double-wing spacing adjustable bracket" of the present invention has been replaced by the "limiting component", and the "wing" in the present invention actually refers to the "wing" in the ligature-type dental braces which is equivalent to the ligature-type dental braces in terms of mechanical properties, but there is no physical structure of the "wing"; the present invention is intended to show that the spacing between the "wings" is adjustable, and the use of the term "wing" is also easier to be understood and expressed by those skilled in the art.

[0054] The invention provides a bracket with adjustable double-wing spacing, wherein the critical clearance angle between the bracket groove and the archwire is adjustable in the labiolingual direction and the occlusal-gingival direction, and the friction force and the torsional force can be adjusted accordingly, thereby reducing the number of follow-up visits and improving the correction efficiency.

[0055] The present invention also provides a dental brace, comprising: a correction arch wire and a plurality of self-ligating brackets provided according to the present invention or double-wing adjustable spacing brackets provided according to the present invention, wherein the correction arch wire passes through the interior of adjacent bracket bodies 3 in sequence.

[0056] Specifically, the dental braces of this embodiment have two arrangements:

[0057] Generally, a double-wing adjustable bracket structure is adopted, two self-locking brackets are fixed on each tooth, the correction arch wire passes through the adjacent bracket body 3, and the clearance angle is adjusted by the limiting component 4. If one of the limiting components 4 of the double-wing adjustable bracket structure is fixed, it can also be called a single-wing bracket structure. Among them, the clearance angle adjustment range of the double-wing adjustable bracket structure is more precise, and the correction arch wire fixation is more stable.

[0058] In addition, a single-wing bracket structure can also be used according to the actual situation of the patient, and a self-locking bracket is fixed on each tooth. The correction arch wire passes through the adjacent bracket body 3, and the clearance angle is adjusted by the limit component 4. When designed as a single-wing bracket, the inner diameter of the proximal port is changed to a rectangular groove with the same inner diameter as the distal end, and the unilateral bracket is suitable for narrow lower incisors. Depending on the correction stage, the correction arch wire can be round wire or square wire, or nickel-titanium wire or stainless steel wire.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-ligating bracket, characterized in that: include: Bracket base plate; A first elastic bracket, wherein a first end of the first elastic bracket is connected to the bracket bottom plate; A bracket body, wherein the bracket body is a hollow structure, the second end of the first elastic bracket is connected to the distal end of the bracket body, a gap is provided at the distal end of the bracket body, and the distal end of the bracket body is radially expanded by the second end of the first elastic bracket; A limiting component, which is movably arranged along the axial direction of the bracket body and sleeved on the outer side of the bracket body, and is used to overcome the elastic force provided by the first elastic support and make the bracket body contract radially; The bracket body comprises a first platform and a second platform which are symmetrically arranged, the first platform and the second platform are arranged correspondingly and are supported by the first elastic bracket to form a truncated cone structure, and the gap is located between the first platform and the second platform; The limiting component is a threaded member, the outer side of the bracket body is provided with an external thread along the axial direction, the threaded member is provided with an internal thread adapted to the external thread, and the threaded member is meshedly connected with the bracket body through the internal thread and the external thread; It also includes a second elastic bracket, wherein the first end of the second elastic bracket is connected to the bracket bottom plate, and the second end of the second elastic bracket is supported at the proximal end of the bracket body and radially expands the first platform and the second platform at the proximal end to form a gap for inserting a correction archwire; The first elastic bracket is a cross structure, the first end of the second elastic bracket is an "eight"-shaped structure, and the second end of the second elastic bracket is a vertical structure.

2. The self-ligating bracket according to claim 1, characterized in that: The cross section of the hollow structure at the proximal end of the bracket body is circular, the cross section of the hollow structure at the distal end of the bracket body is rectangular, and the hollow structure of the bracket body from the proximal end to the distal end gradually changes from circular to rectangular.

3. The self-ligating bracket according to claim 1, characterized in that: A first scale mark is provided on the outer wall of the limiting component along the circumferential direction, and / or, A second scale mark is axially arranged on the outer wall of the bracket body.

4. The self-ligating bracket according to claim 1, characterized in that: The limiting component is a C-shaped structure, and the outer wall of the limiting component forms a rough surface and / or is provided with a hole for inserting a needle-shaped tool.

5. A bracket with adjustable double-wing spacing, characterized in that: It comprises two self-ligating brackets according to any one of claims 1 to 4, wherein the self-ligating brackets are axially arranged correspondingly.

6. A dental brace, characterized in that: include: A correction arch wire and a plurality of self-ligating brackets according to any one of claims 1 to 4 or a bracket with adjustable wing spacing according to claim 5, wherein the correction arch wire passes through the interior of adjacent bracket bodies in sequence.

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