An orthodontic appliance

Abstract

The present invention discloses an orthodontic appliance and a manufacturing method thereof. The orthodontic appliance includes: a fixing member and an orthodontic wire; the fixing member is used to be fixed on the tooth surface, and the orthodontic wire has a plurality of curved structures for releasing orthodontic force. The orthodontic wire is an elastic member with elasticity, and the orthodontic wire and the fixing member are detachably buckled and connected. This appliance can accurately control the amount of tooth movement, precisely quantify the acting force applied to the local and overall teeth; greatly save the time of patients and doctors, significantly reduce the medical cost, and greatly improve the convenience of orthodontics; this manufacturing method has a short production time, high production efficiency, greatly saves the manufacturing process steps, and reduces the medical cost.

Description

Technical Field

[0001] The invention relates to orthodontic technology, and in particular to an orthodontic appliance and a method for manufacturing the orthodontic appliance. Background Art

[0002] Currently, the commonly used devices for correcting malocclusion are fixed appliances and removable appliances.

[0003] Fixed orthodontic appliances usually consist of two parts: brackets and archwires. Mass-produced brackets are usually manufactured using milling, wire cutting, stamping, powder metallurgy and other processes. Customized brackets are usually manufactured using 3D printed resin models and then lost wax casting. Archwires are usually produced using mold drawing. During correction, the brackets are fixed on the tooth surface, and the force between the grooves and the archwires is used to move the deformed teeth to achieve the purpose of correction. Fixed orthodontic technology has undergone more than a hundred years of development and accumulation, forming a mature mechanical correction system, which is currently the most commonly used orthodontic treatment method. However, fixed orthodontic technology also has certain defects. After the doctor bonds the brackets to the tooth surface, the patient usually needs to go to the hospital for a follow-up visit once every one to two months. The doctor adjusts the archwire, brackets or applies force based on the diagnosis. A patient with a case of medium difficulty needs to have a follow-up visit about a dozen times, which takes a long time of medical treatment. In addition, the brackets are usually bonded to the side of the lip, which greatly affects the appearance. There are also brackets bonded to the side of the tongue, which improves the aesthetics, but because the operating space in the mouth is narrow, the doctor's operation is more difficult, the comfort is relatively poor, the cost and fee are relatively high, and the popularity rate is not high.

[0004] The most commonly used removable braces are bracketless invisible braces, which use transparent elastic polymer materials to make a series of "braces" according to the expected trajectory of tooth movement. First, a series of tooth molds are made according to the trajectory, and then the transparent material is adsorbed on the tooth mold by heat adsorption to make transparent braces. Usually, a case requires about 50 pairs of braces, which are replaced every two weeks on average. The biggest advantage of this brace is that it uses transparent materials, has an invisible effect, and is highly aesthetic. At the same time, patients can take it off and put it on at any time, which provides a good experience. However, the elasticity of this transparent elastic polymer material can hardly meet the needs of correction, and its elastic force decays quickly, resulting in excessive force in the early stage of correction and too little force in the later stage when worn; and the current manufacturing methods are all thermal adsorption processes, which make it impossible to accurately quantify the force applied by the braces to the teeth. At the same time, the adsorption force between the braces and the teeth is insufficient. Under the influence of various factors, the teeth cannot move completely along the predetermined target position, and the expression rate is usually only about 50%, resulting in a narrow indication and cannot be applied to more complex malocclusions. Even in the correction process of cases of ordinary difficulty, it is often necessary to restart the design plan, which brings great trouble to the treatment and greatly increases the treatment cycle and cost.

[0005] In summary, the disadvantages of existing orthodontic techniques are as follows:

[0006] (1) Among fixed orthodontic appliances, labial appliances are not invisible and aesthetically pleasing; lingual appliances are costly and require high doctor skills. Both require matching arch wires to achieve the correction purpose and need to be replaced regularly. The transparent elastic polymer material of the bracketless invisible appliance has insufficient elasticity, applies too much force in the early stage of treatment and too little force in the later stage. The force applied to the teeth cannot be quantified and decays quickly. It is necessary to replace the appliance regularly, and dozens of pairs need to be replaced throughout the treatment cycle, which brings great trouble to the treatment and greatly increases the treatment cycle and cost.

[0007] (2) The existing manufacturing techniques of appliances generally have the problems of cumbersome manufacturing processes, long time-consuming, long production cycles, and high production costs. Summary of the Invention

[0008] To overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide an orthodontic appliance, which can solve the problems that current fixed appliances require frequent follow-up visits, occupy a long medical time, patients cannot operate independently, and the elastic polymer material of removable invisible appliances has insufficient elasticity and requires a large number of replacements, resulting in a long treatment cycle and high treatment costs. Another objective of the present invention is to provide a manufacturing method for an orthodontic appliance, which can solve the problems of cumbersome manufacturing processes, long production time, and high costs of current appliances; the appliance prepared by this method can continuously release the orthodontic force during the orthodontic process and can accurately quantify the force applied to the local and overall teeth.

[0009] The present invention adopts the following technical solutions to achieve:

[0010] An orthodontic appliance includes: a fixing member and an orthodontic wire; the fixing member is used to be fixed on the tooth surface, the orthodontic wire has a plurality of curved structures for releasing the orthodontic force, the orthodontic wire is an elastic member with elasticity, and the orthodontic wire and the fixing member are detachably snap-connected.

[0011] Further, the orthodontic wire is made of a shape memory metal material.

[0012] Further, the fixing member includes: a bottom plate for bonding to the tooth surface and a snap member for cooperating with the orthodontic wire; the snap member is fixed on the bottom plate, and the snap member is provided with a snap groove on its side portion that matches the cross-sectional shape of the orthodontic wire; the orthodontic wire has a concave structure in a curved shape, and the bending direction of the concave structure is adapted to surround the snap groove; the concave structure and the snap groove are snap-connected to each other.

[0013] Further, the fixing member includes: a bottom plate for bonding to the tooth surface and a plug-in member for matingly connecting with the orthodontic wire; the plug-in member is fixed on the bottom plate, and an insertion groove having a hollow structure is formed inside the plug-in member; the orthodontic wire has a concave structure in a curved shape, and a pin adapted to cooperate with the insertion groove is further provided along the inner side direction of the concave structure; the pin is inserted and fitted into the insertion groove.

[0014] Further, the fixing member includes: a first attachment and a second attachment, both the first attachment and the second attachment are bonded to the tooth surface; a receiving space is formed by the distance between the two first attachments, and a card slot is provided along the side of the second attachment; the orthodontic wire has a concave structure in a curved shape, and a connecting member and a locking member are provided on the concave structure, and both ends of the connecting member are respectively connected to the orthodontic wire and the locking member; the connecting member is snap-fitted into the receiving space between the two first attachments, and the shape of the locking member is adapted to snap-fit the card slot; the locking member is snap-fitted into the card slot.

[0015] Further, the fixing member includes: a bottom plate for bonding to the tooth surface and a engaging member for matingly connecting with the orthodontic wire, the engaging member is fixed on the bottom plate; the orthodontic wire has a concave structure in a curved shape, and a plurality of protruding structures are provided on the inner side of the concave structure; a protruding mating groove matching the protruding structure is provided on the side of the engaging member, and the number of the protruding mating grooves corresponds to the number of the protruding structures; the protruding structure is snap-fitted into the protruding mating groove.

[0016] Further, the fixing member includes: a bottom plate for bonding to the tooth surface and a plurality of boss structures fixed on the bottom plate; the width of the top of the boss structure is greater than the width of its side, and the orthodontic wire has a concave structure in a curved shape, and the side of the concave structure is closely abutted against the side of the boss.

[0017] Further, the fixing member includes: a bottom plate for bonding to the tooth surface and a mating member for matingly connecting with the orthodontic wire; a groove in the shape of a through groove is provided on the mating member, and a long strip portion matching the groove is provided on the orthodontic wire; the long strip portion is snap-fitted into the groove.

[0018] Further, one or more protruding structures are further provided on the concave structure of the orthodontic wire, and a protruding mating groove matching the protruding structure is further provided on the side of the pressing member, and the number of the protruding mating grooves corresponds to the number of the protruding structures; the protruding structure is snap-fitted into the protruding mating groove.

[0019] Further, a convex mating groove is respectively provided on the left side, right side and front side of the engaging part, and convex structures are provided at corresponding positions of the orthodontic wire; the three convex structures are respectively engaged in the three convex mating grooves.

[0020] Further, three boss structures are provided on the base plate, and the boss structures are distributed in a triangular shape; two ends of the undercut structure respectively abut against the inner sides of the two boss structures, and the middle part of the undercut structure abuts against the outer side of the other boss structure.

[0021] Further, snap rings are fixedly provided at both ends of the long strip part, the outer diameter of the snap ring is greater than the inner diameter of the groove, and the two snap rings respectively abut against both ends of the groove.

[0022] Further, the orthodontic wire includes an anterior tooth segment and a posterior tooth segment; a wrapping part extending outwards is provided on the side of the posterior tooth segment of the orthodontic wire opposite to the buckle part, and the shape of the wrapping part is adapted to cover and wrap the side part of the tooth.

[0023] Further, the curved structure includes: boot-shaped curve, vertical open curve, open vertical curve, closed vertical curve, looped open vertical curve, looped closed vertical curve, horizontal curve, looped horizontal curve, gate-shaped curve, omega curve, small loop curve.

[0024] Further, a plurality of single-curved structures are provided on the orthodontic wire segment between two adjacent fixing parts, or a combined double-curved structure including any two single-curved structures is provided, or a combined multi-curved structure including any multiple single-curved structures is provided.

[0025] Further, the orthodontic appliance further includes a transpalatal bar; both ends of the transpalatal bar are connected to the orthodontic wire, and the transpalatal bar and the orthodontic wire are fixedly connected or integrally formed.

[0026] Further, a hook or a traction hook interface is further provided on the transpalatal bar or the orthodontic wire.

[0027] Further, the orthodontic appliance further includes an arch expander; both ends of the arch expander are fixed to the orthodontic wire.

[0028] Further, the orthodontic appliance further includes a Nance arch; both ends of the Nance arch are fixed to the orthodontic wire.

[0029] Further, the orthodontic appliance further includes a tongue crib or a tongue stop; the tongue crib or the tongue stop is connected to the orthodontic wire.

[0030] Further, the orthodontic wire is of a double-rail structure, including: a lingual rail and a buccal rail; the end of the lingual rail is connected to the end of the buccal rail, the lingual rail is fixed on the lingual surfaces of some teeth or all teeth, and the buccal rail is fixed on the buccal surfaces of the posterior teeth part and the canine teeth part or the buccal surfaces of all teeth, so that the lingual rail and the buccal rail jointly wrap the tooth segment to be corrected.

[0031] Further, the orthodontic wire is any one of a titanium-based alloy, a nickel-based alloy, and a manganese-iron alloy.

[0032] Further, the cross-sectional shape of the orthodontic wire is any one of a circle, an ellipse, a horseshoe shape, a square, a polygon, and a triangle, or a combination of any two or more of them.

[0033] Further, the shape of the fixing member is any one of a sphere, an ellipse, a semi-heart shape, and a triangle, or a combination of any two or more of them.

[0034] A manufacturing method of an orthodontic appliance includes: a data acquisition step: obtaining three-dimensional data of the patient's dental crowns and tooth roots through three-dimensional scanning or oral CBCT, ultrasound; a tooth arrangement step: importing the acquired patient oral data into computer software, determining the movement trajectories of the teeth according to the patient's orthodontic plan; and decomposing the movement trajectories of the full set of teeth into several orthodontic steps according to the requirements of biomechanics; a fixing member and orthodontic wire design step: designing fixing members on the tooth surfaces according to the patient's specific tooth conditions and orthodontic needs; determining the shape of the detachable snap-connection section orthodontic wire that matches the fixing member according to the shape of the fixing member and the tooth surface morphology, and then designing the orthodontic wire at the corresponding positions in the adjacent tooth spaces, and connecting all the orthodontic wires of the sections cooperating with the fixing members and the orthodontic wires at the adjacent tooth spaces to form a complete orthodontic wire; each orthodontic step corresponds to a pair of orthodontic wires; a 3D printing step: inputting the computer model data of the orthodontic wire into a 3D printer for printing and forming to produce a physical orthodontic wire.

[0035] Further, the manufacturing method of the orthodontic appliance further includes: an orthodontic wire post-treatment step: performing heat treatment and shaping on the formed orthodontic wire to eliminate internal stress, and performing surface treatment on the orthodontic wire to reduce the surface roughness, and the surface treatment method is any one or more of mechanical grinding, polishing, electrolysis, and acid etching.

[0036] Further, in the fixing member and orthodontic wire design step: designing the types of bend structures of the orthodontic wire, the specific quantity and combination mode of the bend structures, the sizes of the orthodontic wires at different positions, and the shape of the orthodontic wire according to the patient's specific tooth conditions and orthodontic needs.

[0037] Further, in the steps of designing the fixing member and the orthodontic wire: According to the specific dental conditions and orthodontic requirements of the patient, design the shape, size, thickness and detachable fastening method of the fixing member.

[0038] Further, in the 3D printing step: The solid orthodontic wire can be any one of a shape memory metal material, a castable resin material, and a wax material.

[0039] Compared with the prior art, the beneficial effects that the present invention can achieve are:

[0040] The present invention combines the orthodontic concepts of the current fixed orthodontic technology and the removable orthodontic technology, and solves the existing problems of both;

[0041] ① Set a number of curved structures on the orthodontic wire that can continuously release orthodontic force. Through the cooperation of the orthodontic wire and the fixing member and the rebounding effect of the curved structure, the amount of tooth movement can be accurately controlled, and the force applied to the local and overall teeth can be accurately quantified, solving the problem that the current bracketless invisible orthodontic appliance applies too much force in the early stage of orthodontics and too little force in the later stage;

[0042] ② The fixing member can be fixed on the lingual tooth surface, solving the aesthetic problem brought by the current fixed orthodontic appliance fixed on the labial side;

[0043] ③ The fixing member and the orthodontic wire are connected by a detachable fastening structure. The patient can independently remove and wear the orthodontic wire. The doctor only needs to deliver several sets of prepared orthodontic wires to the patient. The patient can independently replace the corresponding orthodontic wires according to different orthodontic stages, and the operation difficulty is low. The patient only needs a simple fastening action to complete. The present invention fundamentally changes the current orthodontic diagnosis and treatment method. After obtaining the orthodontic wire, the patient can independently wear the orthodontic appliance and replace the orthodontic wire, greatly reducing the number of visits to the doctor. Compared with the current orthodontic technology in which patients need to frequently visit the hospital, the present invention greatly saves the time of patients and doctors, greatly saves medical costs, and greatly improves the convenience of orthodontics;

[0044] ④ According to the biomechanical requirements and the patient's personalized orthodontic needs, after collecting the patient's oral data, the orthodontic wire is quickly manufactured by 3D printing. Compared with the current fixed orthodontic appliance that requires cumbersome manufacturing processes such as milling, wire cutting, stamping, powder metallurgy, investment casting, and die drawing, the production of the present invention takes a short time, has high production efficiency, greatly saves the manufacturing process steps, reduces medical costs, and the processing accuracy is easier to control than machining. Description of the Drawings

[0045] Figure 1 The figure shows a schematic diagram of the wearing state of the orthodontic appliance in the first embodiment;

[0046] Figure 2The figure shows a schematic diagram of the orthodontic wire of the first embodiment;

[0047] Figure 3 The figure shows a partial schematic diagram of the orthodontic wire of the first embodiment;

[0048] Figure 4 The figure shows a schematic diagram of the fixing member of the first embodiment;

[0049] Figure 5 The figure shows a schematic diagram of the cooperation between the fixing member and the orthodontic wire of the first embodiment;

[0050] Figure 6 The figure shows a schematic diagram of the wearing state of the orthodontic appliance of the second embodiment;

[0051] Figure 7 The figure shows a schematic diagram of the orthodontic wire of the second embodiment;

[0052] Figure 8 The figure shows a schematic diagram of the cooperation between the fixing member and the orthodontic wire of the second embodiment;

[0053] Figure 9 The figure shows a partial schematic diagram of the orthodontic wire of the second embodiment;

[0054] Figure 10 The figure shows a schematic diagram of the fixing member of the second embodiment;

[0055] Figure 11 The figure shows a schematic diagram of the wearing state of the orthodontic appliance of the third embodiment;

[0056] Figure 12 The figure shows a schematic diagram of the orthodontic wire of the third embodiment;

[0057] Figure 13 The figure shows a schematic diagram of the cooperation between the fixing member and the orthodontic wire fixed on the tooth surface of the third embodiment;

[0058] Figure 14 The figure shows a schematic diagram of the cooperation between the fixing member and the orthodontic wire of the third embodiment;

[0059] Figure 15 The figure shows a partial schematic diagram of the orthodontic wire of the third embodiment;

[0060] Figure 16 The figure shows a schematic diagram of the fixing member of the third embodiment;

[0061] Figure 17 The figure shows a cross-sectional view of the second attachment of the third embodiment;

[0062] Figure 18 The figure shows a schematic diagram of the wearing state of the orthodontic appliance of the fourth embodiment;

[0063] Figure 19The figure shows a schematic diagram of the orthodontic wire of the fourth embodiment;

[0064] Figure 20 The figure shows a partial schematic diagram of the orthodontic wire of the fourth embodiment;

[0065] Figure 21 The figure shows a schematic diagram of the fixing member of the fourth embodiment;

[0066] Figure 22 The figure shows a schematic diagram of the cooperation between the fixing member and the orthodontic wire of the fourth embodiment;

[0067] Figure 23 The figure shows a partial schematic diagram of the orthodontic wire of the fifth embodiment;

[0068] Figure 24 The figure shows a schematic diagram of the fixing member of the fifth embodiment;

[0069] Figure 25 The figure shows a schematic diagram of the cooperation between the fixing member and the orthodontic wire of the fifth embodiment;

[0070] Figure 26 The figure shows a partial schematic diagram of the orthodontic wire of the sixth embodiment;

[0071] Figure 27 The figure shows a schematic diagram of the fixing member of the sixth embodiment;

[0072] Figure 28 The figure shows a schematic diagram of the cooperation between the fixing member and the orthodontic wire of the sixth embodiment;

[0073] Figure 29a The figure shows a structural schematic diagram of an open vertical loop;

[0074] Figure 29b The figure shows a structural schematic diagram of a closed vertical loop;

[0075] Figure 29c The figure shows a structural schematic diagram of a looped open vertical loop;

[0076] Figure 29d The figure shows a structural schematic diagram of a looped closed vertical loop;

[0077] Figure 29e The figure shows a structural schematic diagram of a horizontal loop;

[0078] Figure 29f The figure shows a structural schematic diagram of a looped horizontal loop;

[0079] Figure 29g The figure shows a structural schematic diagram of a gate loop;

[0080] Figure 29h The figure shows a structural schematic diagram of an omega loop;

[0081] Figure 29i The structural schematic diagram of the small circular curve is shown;

[0082] Figure 30a The first example diagram of the single - curve structure is shown;

[0083] Figure 30b The second schematic diagram of the single - curve structure is shown;

[0084] Figure 30c The third example diagram of the single - curve structure is shown;

[0085] Figure 30d The fourth example diagram of the single - curve structure is shown;

[0086] Figure 31a The first example diagram of the double - curve structure is shown;

[0087] Figure 31b The second example diagram of the double - curve structure is shown;

[0088] Figure 32 The schematic diagram of the orthodontic appliance with a transverse palatal bar is shown;

[0089] Figure 33 The schematic diagram of the arch wire with a transverse palatal bar is shown;

[0090] Figure 34 The schematic diagram of the structure of the preset traction hook on the transverse palatal bar is shown;

[0091] Figure 35 The schematic diagram of the structure of the preset traction hook on the arch wire is shown;

[0092] Figure 36 The schematic diagram of the orthodontic appliance with an expansion appliance is shown;

[0093] Figure 37 The schematic diagram of the arch wire with an expansion appliance is shown;

[0094] Figure 38 The schematic diagram of the wearing state of the buccolingual bilateral track arch wire is shown;

[0095] Figure 39 The schematic diagram of the buccolingual bilateral track arch wire is shown;

[0096] Figure 40 The schematic diagram of the structure of the preset protrusion on the arch wire in Example 1 is shown;

[0097] Figure 41 The schematic diagram of the preset protrusion mating groove on the clasp in Example 1 is shown;

[0098] Figure 42 The mating schematic diagram of the protrusion and the protrusion mating groove in Example 1 is shown;

[0099] Figure 43a Shown is a schematic diagram of the first cross-sectional shape of the orthodontic wire;

[0100] Figure 43b Shown is a schematic diagram of the second cross-sectional shape of the orthodontic wire;

[0101] Figure 43c Shown is a schematic diagram of the third cross-sectional shape of the orthodontic wire;

[0102] Figure 43d Shown is a schematic diagram of the fourth cross-sectional shape of the orthodontic wire;

[0103] Figure 43e Shown is a schematic diagram of the fifth cross-sectional shape of the orthodontic wire;

[0104] Figure 43f Shown is a schematic diagram of the sixth cross-sectional shape of the orthodontic wire;

[0105] Figure 43g Shown is a schematic diagram of the seventh cross-sectional shape of the orthodontic wire;

[0106] Figure 44a Shown is a schematic diagram of the orthodontic wire controlling the mesiodistal movement of teeth;

[0107] Figure 44b Shown is a schematic diagram of the orthodontic wire controlling the gingivolingual movement of teeth;

[0108] Figure 44c Shown is a schematic diagram of the orthodontic wire controlling the axial inclination movement of teeth;

[0109] Figure 44d Shown is a schematic diagram of the orthodontic wire controlling the sagittal movement of teeth;

[0110] Figure 44e Shown is a schematic diagram of the orthodontic wire controlling the torque movement of teeth;

[0111] Figure 44f Shown is a schematic diagram of the orthodontic wire controlling the torsional movement of teeth;

[0112] Figure 45 Shown is a schematic diagram of the manufacturing method process of the orthodontic appliance.

[0113] In the figure: 10, fixing member; 11, bottom plate; 12, engaging member; 121, engaging groove; 13, plugging member; 131, plugging groove; 14, first accessory; 15, second accessory; 151, clamping groove; 16, convex mating groove; 17, clamping member; 18, convex platform structure; 19, mating member; 191, groove; 20, orthodontic wire; 21, curved structure; 211, open vertical curve; 212, closed vertical curve; 213, looped open vertical curve; 214, looped closed vertical curve; 215, horizontal curve; 216, looped horizontal curve; 217, gate-shaped curve; 218, omega curve; 219, small loop curve; 22, undercut structure; 23, pin; 24, connecting member; 25, buckling member; 26, convex structure; 27, wrapping portion; 28, lingual rail; 29, buccal rail; 210, long strip portion; 2101, snap ring; 30, tooth; 40, transpalatal bar; 50, traction hook interface; 60, arch expander. Detailed implementation manners

[0114] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0115] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0116] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0117] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0118] Referring to Figure 1 、 Figure 6 、 Figure 11 , the present invention discloses an orthodontic appliance, including: a fixing member 10 and an orthodontic wire 20. Among them, the fixing member 10 is used to be fixed on the tooth surface, especially bonded to the lingual tooth surface, and is at least used for the orthodontics of two or more teeth 30; the orthodontic wire 20 has a plurality of curved structures 21 for releasing orthodontic forces. The curved structure 21 is a curved structure formed by bending on the orthodontic wire 20, and the orthodontic wire 20 is an elastic member with elasticity; the orthodontic wire 20 and the fixing member 10 are detachably snap-connected. When the orthodontic wire 20 is snap-connected to the fixing member 10, the fixing member 10 provides a fixing function. Since the curved structure 21 on the orthodontic wire 20 has a resilience characteristic and can continuously release orthodontic forces, the accurate movement between the teeth 30 can be controlled to achieve the orthodontic effect. The orthodontic wire 20 can include a series of multiple orthodontic wires 20, and each orthodontic wire 20 corresponds to a set of deformations in one step during the movement of the teeth 30.

[0119] Specifically, the orthodontic wire 20 can be selected from shape memory metal materials, including but not limited to titanium-based alloys, nickel-based alloys, and manganese-iron alloys. Of course, orthodontic wires 20 prepared from other known shape memory metal materials in the prior art should all be within the protection scope of the present invention. The orthodontic wire 20 made of shape memory metal material fits better with the shape of the patient's teeth 30 in the oral cavity. The memory shape that can provide the orthodontic force required by the teeth 30 can be activated by the human oral temperature, and it has good superelasticity; moreover, the shape memory metal material can continuously release the acting force, the force is easier to control and more fitting, and appropriate forces can be output at different stages of orthodontics, and it is not easy to have the problem that the elastic attenuation of the high molecular elastic material of the clear aligner is fast, thus avoiding the problems of excessive force application in the early stage and insufficient force application in the later stage of the clear aligner; at the same time, the present invention can meet the requirements of the entire orthodontic process with one orthodontic appliance. Of course, multiple orthodontic appliances can also be designed according to actual needs to meet the orthodontic requirements of patients at different stages. Compared with the clear aligner that requires dozens of pairs to complete the treatment, the present invention greatly reduces the medical cost and time cost of patients and improves the treatment experience of patients.

[0120] The following describes the principle of the orthodontic wire 20 interacting with the fixing member 10 through the curved structure 21 to control tooth movement: As Figure 44a - Figure 44f shown, the dotted line is the shape of the orthodontic wire 20 designed according to the orthodontic requirements, and the solid line is the shape of the orthodontic wire 20 during the actual orthodontic process. The arrow indicates the tooth movement direction. When orthodontic treatment begins, the orthodontic wire 20 is snapped into the fixing member 10. At this time, the orthodontic wire 20 is in the solid line position in the figure. Since the orthodontic wire 20 is an elastic material with good resilience, during the orthodontic process, the orthodontic wire 20 will rebound towards the pre-set shape of the orthodontic wire (i.e., the dotted line position in the figure). The orthodontic wire 20 transmits the orthodontic force to the fixing member, thereby acting on the tooth 30 to precisely control the mesial-distal, gingival-occlusal, sagittal, axial inclination, torque, and rotation movements of the tooth 30.

[0121] Among them, the meanings of the above various movement directions are: (1) Mesial-distal: Refer to Figure 44a , mesial refers to the direction closer to the midline of the face, and distal refers to the farther direction; the midline is an imaginary line that bisects the craniofacial region into two equal left and right parts, passing through between the two eyes, the tip of the nose, and between the two maxillary central incisors and the two mandibular central incisors; (2) Gingival-occlusal: Refer to Figure 44b , the surface that comes into contact when the upper and lower posterior teeth occlude is called the occlusal surface; (3) Axial inclination: Refer to Figure 44c , the angle formed by the long axis of the clinical crown of the tooth perpendicular to the occlusal plane; (4) Sagittal: Refer to Figure 44d , the direction in which the central ray of the X-ray enters from the front or rear of the subject's body and is parallel to the sagittal plane; (5) Torque: Refer to Figure 44e , which refers to the angle between the long axis of the clinical crown of the tooth and the perpendicular to the plane, reflecting the labial (buccal)-lingual inclination of the tooth. (6) Rotation: Refer to Figure 44f , from the perspective of the occlusal surface of the tooth, the rotation around the long axis of the tooth crown.

[0122] The present invention combines the orthodontic concepts of current fixed orthodontic technology and removable orthodontic technology, and solves the problems existing in both:

[0123] ① A number of curved structures 21 capable of continuously releasing orthodontic force are provided on the orthodontic wire 20. Through the cooperation of the orthodontic wire 20 and the fixing member 10 and the rebounding effect of the curved structure 21, the movement amount of the tooth 30 can be accurately controlled, and the force applied to the local and overall tooth 30 can be accurately quantified, solving the problem that the force applied by the current bracketless invisible orthodontic appliance is too large in the early stage of orthodontic treatment and too small in the later stage;

[0124] ② The fixing member 10 can be fixed on the lingual tooth surface, solving the aesthetic problem caused by the current fixed orthodontic appliance being fixed on the labial side;

[0125] ③ The fixing member 10 and the orthodontic wire 20 are connected by a detachable fastening structure. The patient can independently remove and wear the orthodontic wire 20. The doctor only needs to deliver several prepared pairs of orthodontic wires 20 to the patient. The patient can then independently replace the corresponding orthodontic wire 20 according to different orthodontic stages, and the operation difficulty is low. The patient only needs a simple fastening action to complete. The present invention fundamentally changes the current orthodontic diagnosis and treatment method. After obtaining the orthodontic wire 20, the patient can independently wear the orthodontic appliance and replace the orthodontic wire 20, greatly reducing the number of follow-up visits to the doctor. Compared with the current orthodontic technology where patients need to frequently visit the hospital for follow-up, the present invention greatly saves the time of patients and doctors, significantly saves medical costs, and greatly improves the convenience of orthodontics.

[0126] For the specific structures and connection methods of the fixing member 10 and the orthodontic wire 20, six embodiments are provided below.

[0127] Embodiment 1: Refer to Figure 1 - Figure 5 , the fixing member 10 includes a bottom plate 11 for bonding to the tooth surface and a snap member 12 for cooperating with the orthodontic wire 20 for connection. The snap member 12 is fixed on the bottom plate 11. The snap member 12 is provided with a snap groove 121 on its side portion that matches the cross-sectional shape of the orthodontic wire 20, such that the width of the side portion of the snap member 12 is smaller than the width of its upper surface. The orthodontic wire 20 has a concave structure 22 in a curved shape, and the bending direction of the concave structure 22 is adapted to surround the snap groove 121. The orthodontic wire 20 is snap-connected to the snap groove 121 of the fixing member 10 through the concave structure 22. Since the orthodontic wire 20 itself has elasticity, when the patient wears the orthodontic wire 20, the orthodontic wire 20 is placed in the oral cavity, the position of its concave structure 22 is aligned with the snap member 12, and then pressed inward, and the orthodontic wire 20 can be snapped into the fixing member 10; when removing or replacing the orthodontic wire 20, the orthodontic wire 20 is slightly pulled out in the opposite direction. This embodiment directly cooperates and connects the orthodontic wire 20 itself with the fixing member 10, and has the characteristics of convenient use, simple structure, and strong connection stability.

[0128] According to the orthodontic requirements, if it is necessary to further strengthen the orthodontic force, refer to Figure 40 - Figure 42 , one or more convex structures 26 can be added to the concave structure 22 of the orthodontic wire 20, and a convex mating groove 16 matching the convex structure 26 is provided on the side portion of the snap member 12, and the number of the convex structures 26 and the convex mating grooves 16 corresponds; the convex structure 26 is snap-connected into the convex mating groove 16 to enhance the orthodontic force of the orthodontic wire 20 in this direction, so as to achieve the movement of the three-dimensional square tooth 30.

[0129] Embodiment 2: Refer to Figure 6 - Figure 10, the fixing member 10 includes a bottom plate 11 for bonding to the tooth surface and a plug-in member 13 for mating and connecting with the orthodontic wire 20. The plug-in member 13 is fixed on the bottom plate 11, and an insertion groove 131 with a hollow structure is formed inside the plug-in member 13; the orthodontic wire 20 has a concave structure 22 in a curved shape, and a pin 23 adapted to cooperate with the insertion groove 131 is further provided on the inner side of the orthodontic wire 20 along the concave structure 22; the orthodontic wire 20 is inserted and connected into the insertion groove 131 of the fixing member 10 through the pin 23. When the patient wears the orthodontic wire 20, the orthodontic wire 20 is placed in the oral cavity, the pin 23 is aligned with the position above the insertion slot, and then buckled downward to position the orthodontic wire 20; when removing the orthodontic wire 20, it can be pulled upward.

[0130] Embodiment Three: Refer to Figure 11 - Figure 17 , the fixing member 10 includes a first attachment 14 and a second attachment 15. Both the first attachment 14 and the second attachment 15 are bonded to the tooth surface. The first attachment 14 is similar to the common attachment structure of a clear aligner and functions as a "handle"; the second attachment 15 has a special structure compared to the first attachment 14, and a circumferential slot 151 is formed along its side; the orthodontic wire 20 has a concave structure 22 in a curved shape, and a connecting member 24 and a buckle member 25 are provided on the concave structure 22. Both ends of the connecting member 24 are respectively connected to the orthodontic wire 20 and the buckle member 25. The connecting member 24 of the orthodontic wire 20 is snapped into the accommodation space between the two first attachments 14 to play a limiting role; and the shape of the buckle member 25 matches that of the slot 151, and the buckle member 25 is snapped into the slot 151. When wearing, the orthodontic wire 20 is worn downward from the incisal direction of the tooth 30, and the buckle member 25 of the orthodontic wire 20 is snapped into the slot 151 of the second attachment 15 to achieve positioning; with the interaction between the connecting member 24 and the first attachment 14, the movement of the tooth 30 can be accurately controlled. Different from Embodiment One, in Embodiment One, it is pressed and buckled in the horizontal direction, while in Embodiment Three, the buckle member 25 is vertically inserted into the slot 151, and through the elastic action of the orthodontic wire 20, the buckle member 25 can clamp the second attachment 15.

[0131] Preferably, refer to Figure 11 - Figure 12 , the orthodontic wire 20 can be divided into an anterior tooth segment and a posterior tooth segment. A wrapping portion 27 extending outward is provided on the other side of the posterior tooth segment of the orthodontic wire 20 relative to the buckle member 25. The structural shape of the wrapping portion 27 is adapted to cover and wrap the side of the tooth 30, which is a semi-wrapping design. Cooperating with the fixing member 10, the movement of the tooth 30 can be accurately controlled, such as torque, axial inclination, torsion, etc. Of course, the orthodontic wire 20 can also not be distinguished between the anterior tooth segment and the posterior tooth segment; in addition, the orthodontic wire 20 in Embodiment One and Embodiment Two can also be distinguished between the anterior tooth segment and the posterior tooth segment, that is, the posterior tooth segment of the orthodontic wire 20 in Embodiment One and Embodiment Two can also be provided with a corresponding wrapping portion 27, depending on the actual orthodontic requirements.

[0132] Example 4: Refer to Figure 18 - Figure 22 , the fixing member 10 includes a bottom plate 11 for bonding to the tooth surface and a engaging member 17 for mating and connecting with the orthodontic wire. The engaging member 17 is fixed on the bottom plate 11. The orthodontic wire 20 has a concave structure 22 in a bent shape, and a plurality of convex structures 26 are provided on the inner side of the concave structure 22; at the same time, a convex mating groove 16 matching the convex structure 26 is formed on the side of the engaging member 17, and the position and number of the convex mating grooves 16 correspond to those of the convex structure 26. The orthodontic wire 20 is engaged in the convex mating groove 16 through the convex structure 26. When wearing, the convex structure 26 of the orthodontic wire 20 is roughly placed above the convex mating groove 16 of the engaging member 17, and then the orthodontic wire 20 is pressed downward forcefully. Since the orthodontic wire 20 itself has elasticity, it can be engaged into the fixing member 10; when disassembling, it can be taken out in the reverse direction.

[0133] Specifically, the engaging member 17 is provided with a total of 3 convex mating grooves 16, and the orthodontic wire is provided with 3 convex structures 26. A convex mating groove 16 is respectively formed on the left side, right side and front side of the engaging member 17, and convex structures 26 are provided at the corresponding positions of the orthodontic wire 20. The three convex structures 26 are respectively engaged in the three convex mating grooves 16 to form a highly stable connection structure, so that the orthodontic wire 20 is not easily loosened.

[0134] Example 5: Refer to Figure 23 - Figure 25 , the fixing member 10 includes a bottom plate 11 for bonding to the tooth surface and a plurality of boss structures 18 fixed on the bottom plate 11. The top width of the boss structure 18 is greater than the side width, showing a structure with a wider top and a narrower bottom; the orthodontic wire 20 has a concave structure 22 in a bent shape, and the side of the concave structure 22 closely abuts against the side of the boss structure 18. When wearing, the orthodontic wire 20 is snapped into the side of the boss structure 18 from above. Since the boss structure 18 has a wider top and a narrower bottom, the orthodontic wire 20 will not be loosened in the vertical direction; at the same time, since the orthodontic wire 20 has elasticity, both ends of the concave structure 22 are pressed against the boss structure 18, so it can also maintain a clamped state in the horizontal direction.

[0135] Specifically, 3 boss structures 18 are provided on the bottom plate 11, which are distributed in a triangle; both ends of the concave structure 22 respectively abut against the inner sides of two boss structures 18, and the middle part of the concave structure 22 abuts against the outer side of another boss structure 18, so that the orthodontic wire 20 is pressed tightly; the cooperation between the 3 boss structures 18 and the orthodontic wire 20 forms a stable connection structure.

[0136] Example 6: Refer to Figure 26 - Figure 28, the fixing member 10 includes a bottom plate 11 for bonding to the tooth surface and a fitting member 19 for mating connection with the orthodontic wire. A groove 191 in the shape of a through groove is formed on the fitting member 19, and a long strip portion 210 matching the groove 191 is provided on the orthodontic wire 20. The long strip portion 210 is snapped into the groove 191. When wearing, align the long strip portion 210 with the groove 191 and press it into the groove 191; when disassembling, take it out in the reverse direction.

[0137] Preferably, snap rings 2101 are fixedly arranged at both ends of the long strip portion 210. The outer diameter of the snap rings 2101 is larger than the inner diameter of the groove 191. The two snap rings 2101 abut against both ends of the groove 191, so that the orthodontic wire 20 will not move and become loose along the axial direction of the long strip portion 210.

[0138] It should be noted that the above six embodiments are only illustrative. The cooperation modes of the fixing member 10 and the orthodontic wire 20 in the present invention include but are not limited to the above six forms. Any conventional snap connection structure that is easy to disassemble and assemble should be within the protection scope of the concept of the present invention.

[0139] In order to achieve different orthodontic purposes, referring to Figure 29a - Figure 29i , the curved structure 21 can be designed into various different structural forms, including but not limited to: boot-shaped curve, vertical open curve, open vertical curve 211, closed vertical curve 212, looped open vertical curve 213, looped closed vertical curve 214, horizontal curve 215, looped horizontal curve 216, gate-shaped curve 217, omega curve 218, small loop curve 219. Only some forms of the curved structure 21 are illustrated in the figure. All the curved structures 21 known in the orthodontic field should be within the protection scope of the present invention.

[0140] According to the actual orthodontic requirements, for the same orthodontic wire 20, in the orthodontic wire segment between two adjacent fixing members 10, several single-curved structures can be set, or several combined double-curved structures including any two of the above single-curved structures can be set, or several combined multi-curved structures including any multiple of the above single-curved structures can be set.

[0141] The functions of some curved structures 21 are illustrated below. Single-curved structure 21: (1) Referring to Figure 30a - Figure 30b , setting a single boot-shaped curve to achieve three-dimensional control of the tooth 30. The setting direction of the boot-shaped curve can be different to achieve different orthodontic functions, mainly manifested as the functions of depressing, elevating, and straightening the tooth 30. (2) Referring to Figure 30c , setting a single looped open vertical curve 213, which is mainly used to widen the dental arch space, especially suitable for the early orthodontic treatment of severe dental crowding cases to achieve the purposes of moving the tooth 30 labially, buccally, twisting, elongating, depressing, etc. (3) Referring to Figure 30d, a single closed vertical curve 212 is set, which can be used to close the gap between two teeth 30 or the gap of a group of teeth. The double-curve structure 21: (1) combination 1, two single-curve structures 21 are combined into a double-curve structure 21 in the positional relationship shown in Figure 31a to close the gap and control the force on the teeth 30 in three-dimensional directions at the same time; (2) combination 2, two single-curve structures 21 are combined into a double-curve structure 21 in the positional relationship shown in Figure 31b to strengthen the control of the vertical force on the teeth 30 while having the function of closing the gap between the teeth 30. For example, the control of the vertical force on the teeth 30 by a single-curve structure 21 or the orthodontic wire 20 is weak. By the superposition combination of multiple-curve structures 21 or the orthodontic wire 20 and the curve structure 21, the strengthening of the orthodontic force can be achieved.

[0142] According to the orthodontic needs of different patients, the orthodontic wire 20 can also be customized and various conventional orthodontic attachments can be added. ① Preferably, referring to Figure 32 - Figure 33 , the present invention further includes a transpalatal bar 40, and both ends of the transpalatal bar 40 are connected to the orthodontic wire 20. The transpalatal bar 40 and the orthodontic wire 20 can be fixedly connected or integrally formed; further preferably, referring to Figure 34 - Figure 35 , hooks or traction hook interfaces 50 are further provided on the transpalatal bar 40 or the orthodontic wire 20 for providing a traction position for bone screws and rubber bands. Preferably, referring to Figure 36 - Figure 37 , the present invention further includes an arch expander 60 for expanding the dental arch from the middle to both sides, and both ends of the arch expander 60 are fixed to the orthodontic wire 20. ② Preferably, the present invention further includes a Nance holding arch (not shown in the figure), which has a three-dimensional anchorage control function; both ends of the Nance holding arch are fixed to the orthodontic wire 20. ③ Preferably, the present invention can further include a tongue crib or a tongue bumper (not shown in the figure); both the tongue crib and the tongue bumper are connected to the orthodontic wire.

[0143] Preferably, the orthodontic wire 20 can be designed as a bilateral buccal and lingual track structure. Referring to Figure 38 - Figure 39 , the orthodontic wire 20 includes a lingual track 28 and a buccal track 29; the end of the lingual track 28 is connected to the end of the buccal track 29. The lingual track 28 is fixed on the lingual surface of some teeth 30 or all teeth 30 (full dental segment), and the buccal track 29 is fixed on the buccal surface of the posterior teeth part and the canine part or the buccal surface of all teeth 30, so that the lingual track 28 and the buccal track 29 jointly wrap the teeth part to be orthodontically treated, and the teeth part to be orthodontically treated is determined according to the orthodontic needs. In addition, the ends of the lingual track 28 and the buccal track 29 can be connected from the gap between the posterior teeth segment and the canine segment, or can be connected from the occlusal surface. In this way, the buccal and lingual sides apply orthodontic forces to the teeth 30 at the same time, more precisely control the movement of the teeth 30, and can achieve the purpose of assisting in aligning the buccal side or retracting with double tracks.

[0144] Preferably, referring to Figure 43a - Figure 43gThe cross-sectional shape of the orthodontic wire 20 is any one of circular, oval, horseshoe-shaped, square, polygonal, triangular, or a combination of any two or more thereof, depending on the actual orthodontic requirements. Of course, other conventional cross-sectional shapes are also within the scope of protection of the present invention.

[0145] Preferably, the shape of the fixing member 10 is any one of spherical, oval, semi-heart-shaped, triangular, or a combination of any two or more thereof. Of course, other conventional shapes of the fixing member 10 are also within the scope of protection of the present invention.

[0146] The present invention also discloses a manufacturing method for an orthodontic appliance, which can be used to manufacture the above-mentioned orthodontic appliance. Refer to Figure 45 , this manufacturing method at least includes the following steps:

[0147] Data acquisition step: Obtain the three-dimensional data of the patient's dental crown and tooth root by means of three-dimensional scanning or oral CBCT, ultrasound;

[0148] Tooth arrangement step: Import the collected patient oral data into computer software, determine the movement trajectory of the teeth 30 according to the patient's orthodontic requirements; and decompose the movement trajectory of the full set of teeth into several orthodontic steps according to the requirements of biomechanics;

[0149] Fixing member 10 and orthodontic wire 20 design step: Design the fixing member on the tooth surface according to the patient's specific dental conditions and orthodontic requirements; Determine the shape of the detachable snap-fit connecting section orthodontic wire that matches the fixing member according to the shape of the fixing member and the tooth surface morphology, and then design the orthodontic wire at this position in the adjacent tooth space, and connect all the orthodontic wires of the sections that cooperate with the fixing member and the orthodontic wires at the adjacent tooth spaces to form a complete orthodontic wire; Each orthodontic step corresponds to a pair of orthodontic wires;

[0150] In this step, preferably, the type of the curved structure 21 of the orthodontic wire 20, the specific quantity and combination mode of the curved structures, the dimensions of the orthodontic wire 20 at different positions, the shape of the orthodontic wire 20, etc. can be designed, so as to accurately control the movement of the teeth 30 to meet different orthodontic requirements, such as the torque, axial inclination, torsion of the teeth 30, or closing the gap between the teeth 30, depressing the teeth 30, etc.; The position of the orthodontic wire 20 corresponding to each tooth 30 can be designed locally or globally in a personalized manner, and the force of the movement of the teeth 30 can be quantified according to the biomechanical requirements of the movement of the teeth 30, so as to accurately control the movement amount of the teeth 30 and improve the orthodontic efficiency;

[0151] By designing the curved structure 21 of the orthodontic wire 20 between two teeth 30, including the size, placement direction, shape, etc. of the curve, to meet different orthodontic requirements, such as opening the gap between the teeth 30, closing the gap between the teeth 30, depressing, elevating, twisting the teeth 30, etc.;

[0152] In this step, preferably, according to the specific dental conditions and orthodontic requirements of the patient, the shape, size, thickness, and detachable fastening method of the fixing member 10 are designed. The fixing member 10 and the orthodontic wire 20 are detachably fastened and connected in a matching manner, so that the orthodontic wire 20 and the teeth 30 cooperate with each other to achieve the orthodontic purpose of accurately moving the teeth 30. The shape of the fixing member 10 can be spherical, oval, semi-heart-shaped, triangular, etc., but is not limited thereto. The shape of the fixing member 10 can be arbitrarily combined according to the orthodontic requirements. Different fixing members 10 cooperate with different orthodontic appliances to achieve different orthodontic requirements.

[0153] 3D printing step: Input the computer model data of the orthodontic wire 20 into a 3D printer for printing and forming to produce a solid orthodontic wire 20.

[0154] Preferably, it further includes a post-treatment step for the orthodontic wire 20: heat-treat and shape the formed orthodontic wire 20 to eliminate internal stress, and perform surface treatment on the orthodontic wire to reduce the surface roughness. The surface treatment method is any one or more of mechanical grinding, polishing, electrolysis, and acid etching.

[0155] Preferably, in the 3D printing step: the solid orthodontic wire can be any one of a shape memory metal material, a castable resin material, and a wax material.

[0156] According to the biomechanical requirements and the personalized orthodontic needs of the patient, after collecting the patient's oral data, the orthodontic wire 20 is rapidly manufactured by 3D printing. Compared with the current fixed orthodontic appliances that require cumbersome manufacturing processes such as milling, wire cutting, stamping, powder metallurgy, investment casting, and die wire drawing, the production of the present invention has a short production time, high production efficiency, greatly saves the manufacturing process steps, reduces the medical cost, and the processing accuracy is easier to control than machining. The orthodontic appliance prepared by this manufacturing method can continuously release orthodontic force during the orthodontic process, can accurately quantify the force applied to the local and overall teeth 30, has accurate correction, saves treatment costs, is simple to use, and comfortable to wear.

[0157] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. An orthodontic appliance, characterized in that, Comprising: A fixing member and an orthodontic wire; the fixing member is for fixing on the tooth surface, the orthodontic wire has a number of curved structures for releasing orthodontic force, the orthodontic wire is an elastic member with elasticity, and the orthodontic wire and the fixing member are detachably snap-connected; when the orthodontic wire is snap-connected to the fixing member, the orthodontic wire is clamped on the fixing member in the mesiodistal direction upwards, so that the orthodontic wire winds around the outside of the fixing member; The fixing member includes: a bottom plate for bonding to the tooth surface and a snap member for cooperating and connecting with the orthodontic wire; the snap member is fixed on the bottom plate, and the snap member is provided with a snap groove on its side portion that matches the cross-sectional shape of the orthodontic wire; the orthodontic wire has a concave structure in a bent shape, and the bending direction of the concave structure is suitable for surrounding the snap groove; the concave structure and the snap groove are snap-connected to each other.

2. The orthodontic appliance according to claim 1, characterized in that, The orthodontic wire is made of a shape memory metal material.

3. The orthodontic appliance according to claim 1, characterized in that, One or more convex structures are further provided on the concave structure of the orthodontic wire, and a convex mating groove that matches the convex structure is further provided on the side portion of the snap member, and the number of the convex mating grooves corresponds to the convex structures; the convex structures are clamped in the convex mating grooves.

4. The orthodontic appliance according to claim 1, characterized in that, The curved structure includes: a boot-shaped curve, a vertical open curve, an open vertical curve, a closed vertical curve, a looped open vertical curve, a looped closed vertical curve, a horizontal curve, a looped horizontal curve, a gate-shaped curve, an omega curve, a small loop curve.

5. The orthodontic appliance according to claim 1 or 4, characterized in that, Several single-curved structures are provided on the orthodontic wire segment between two adjacent fixing members, or several combined double-curved structures that simultaneously include any two single-curved structures are provided, or several combined multi-curved structures that simultaneously include any multiple single-curved structures are provided.

6. The orthodontic appliance according to claim 1, characterized in that, The orthodontic appliance further includes a transpalatal bar; both ends of the transpalatal bar are connected to the orthodontic wire, and the transpalatal bar and the orthodontic wire are fixedly connected or integrally formed.

7. The orthodontic appliance according to claim 6, characterized in that, A hook or a traction hook interface is further provided on the transpalatal bar or the orthodontic wire.

8. The orthodontic appliance according to claim 1, characterized in that, The orthodontic appliance further includes an arch expander; both ends of the arch expander are fixed to the orthodontic wire.

9. The orthodontic appliance according to claim 1, characterized in that, The orthodontic appliance further includes a Nance arch; both ends of the Nance arch are fixed to the orthodontic wire.

10. The orthodontic appliance according to claim 1, characterized in that, The orthodontic appliance further includes a lingual spur or a lingual shield; the lingual spur or the lingual shield is connected to the orthodontic wire.

11. The orthodontic appliance according to claim 1, characterized in that, The orthodontic wire is a double-rail structure, including: a lingual rail and a buccal rail; the end of the lingual rail and the end of the buccal rail are connected, the lingual rail is fixed on the lingual surfaces of some teeth or all teeth, and the buccal rail is fixed on the buccal surfaces of the posterior teeth part and the canine part or the buccal surfaces of all teeth, so that the lingual rail and the buccal rail jointly wrap the tooth segment to be orthodontically treated.

12. The orthodontic appliance according to claim 1, characterized in that, The orthodontic wire is any one of a titanium-based alloy, a nickel-based alloy, and a manganese-iron alloy.

13. The orthodontic appliance according to claim 1, characterized in that, The cross-sectional shape of the orthodontic wire is any one of a circle, an ellipse, a horseshoe shape, a square, a polygon, a triangle, or a combination of any two or more of them.

14. The orthodontic appliance according to claim 1, characterized in that, The shape of the fixing member is any one of a sphere, an ellipse, a semi-heart shape, a triangle, or a combination of any two or more of them.

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