Double-system double-main groove bracket

Abstract

The utility model discloses a bracket with double systems and double main grooves. The bracket comprises a bracket main body, a first groove and a second groove, a base is arranged at the bottom of the bracket main body and is suitable for being propped against teeth; the first groove is formed in the front surface of the bracket main body; the second groove is formed in the front surface of the bracket main body, the second groove and the first groove are arranged at an interval, and the first groove and the second groove are different in cavity. The different cavities are mainly different in shaft inclination and torque. According to the utility model, the differential power groove and the straight arch wire groove are combined together, the high torque, the middle torque and the low torque are set, the differential power technology or the straight arch wire technology or the two technologies can be selected or used at the same time according to the requirements of different treatment stages, and the advantages of the two technologies are effectively combined together in the treatment stage; the cover plate can be used for opening and locking the openings of the two grooves, so that the operation process of oral correction is simplified, the treatment course is shortened, and the correction efficiency and the treatment effect are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of dental orthodontic instruments, specifically to a dual-system dual-main-groove bracket. Background Technology

[0002] Currently, fixed orthodontic techniques mainly include two major systems: the straight wire system (also known as the square wire system) and the Begg system. When using the straight wire system (straight wire appliances) for orthodontic treatment, the main characteristic of tooth movement is overall movement (with a pre-set axis and torque). In contrast, when using the Begg system, the crowns first move freely by tilting (without a pre-set axis and torque), followed by root tilting (i.e., straightening the teeth), ultimately achieving overall movement.

[0003] Tip-Edge technology is an improvement upon Begg technology. The main characteristic of both Begg and Tip-Edge technologies is "differential force technology," and correspondingly, the brackets used are differential force brackets. The common feature of Tip-Edge and Begg brackets is that teeth can freely tilt and move under the action of differential force. Therefore, brackets that allow teeth to tilt and move freely after modification can be collectively called differential force brackets (also known as Begg brackets), their grooves are called differential force grooves, and the orthodontic technique using differential force is called differential force technology. The differential force grooves located on the front of the bracket have only the narrowest part (neck) in the middle area that is the same width as the grooves in a standard straight wire arch. From the neck to the sides, the grooves are wider than those in a standard straight wire arch, and the width increases with distance from the neck. The two ends of the groove resemble two trumpets. The differential force grooves located on the sides of the bracket have a bottom resembling a hillside, with the top located in the middle area, and the sides gradually decreasing in width.

[0004] Straight wire archwire and differential force orthodontic techniques each have their advantages and disadvantages. Straight wire archwire offers advantages such as high efficiency and precision in axial root control, simple and easy operation, fewer steps required for archwire bending, stable and long-lasting treatment results, and a low relapse rate. However, tooth movement and facial profile changes are slow, requiring higher anchorage conditions, usually necessitating the use of anchorage screws to enhance anchorage. This increases the complexity of treatment and patient discomfort to some extent. Furthermore, the orthodontic forces applied during treatment are relatively large, which may put pressure on periodontal tissues and tooth roots. If not performed properly, the risk of bone fenestration and root resorption increases significantly, posing a potential threat to the patient's oral health.

[0005] Differential force technology offers advantages such as rapid tooth movement, quick facial contouring, lighter orthodontic forces, reduced burden on periodontal tissues during treatment, and good anchorage control. However, it is more difficult to operate: the treatment process requires bending a large number of archwires, demanding a high level of skill and experience from the dentist; moreover, its axial root control efficiency is relatively low: compared to straight wire technology, it is less efficient in adjusting root position and overall tooth alignment.

[0006] The Damon series brackets (1998) categorize bracket torque into three types: high torque, medium torque, and low torque. High torque brackets: The bracket design provides a greater tilt angle to the labial (or buccal) side of the teeth, that is, applying a torque force to the teeth towards the labial (or buccal) side to prevent lingual tilting or increase labial protrusion.

[0007] Medium torque bracket: The torque value is moderate, balancing the labial and lingual inclination of the teeth, and is a neutral torque design suitable for most normal dental arch shapes.

[0008] Low-torque brackets: The bracket design gives the teeth a larger tilt angle on the lingual side, that is, it applies a torque force to the teeth on the lingual side to prevent the teeth from labial tilting or increase the lingual concavity.

[0009] Currently, in straight wire or Begg systems, regardless of whether the brackets are high-torque, medium-torque, or low-torque, the brackets are designed with a single groove concept and a single torque design. In actual orthodontic treatment, doctors often need to adjust the treatment mode according to the tooth morphology (e.g., overall movement or tilting movement). However, existing brackets only have one groove (straight wire groove or differential force groove), which cannot adjust the treatment mode in real time according to the needs of orthodontic treatment, thus limiting the practicality of the brackets. Moreover, the archwire must be bent according to different stages of treatment to compensate for the axial tilt and torque, resulting in low accuracy and precision. The process is also cumbersome, increases workload, and seriously reduces treatment compliance. Utility Model Content

[0010] The purpose of this invention is to provide a dual-system, dual-main-groove bracket that combines differential force brackets and straight wire brackets. It allows for the selection of differential force technology, straight wire technology, or both technologies simultaneously, depending on the needs of different treatment stages, effectively integrating the advantages of both techniques during treatment. The bracket is designed with straight wire grooves and differential force grooves according to actual needs. Different groove types can be designed as high-torque, medium-torque, and low-torque grooves, which can shorten the treatment time and improve treatment efficiency and effectiveness.

[0011] To achieve the above objectives, the present invention adopts the following technical solution:

[0012] A dual-system dual-main-groove bracket includes a bracket body, a first groove, and a second groove; the bottom of the bracket body is provided with a base, which is suitable for contacting with teeth; the first groove is formed on the front side of the bracket body; the second groove is formed on the front side of the off-cut end of the bracket body and is spaced apart from the first groove; the cavities of the first groove and the second groove are different.

[0013] In one alternative embodiment, the first groove is a straight wire bow groove or a differential power groove, and the second groove is a differential power groove or a straight wire bow groove, wherein the diameter of the groove opening of the differential power groove gradually increases from the middle to the two side ports.

[0014] In one optional embodiment, the first groove is a medium torque groove, a high torque groove, or a low torque groove, and the second groove is a high torque groove, a medium torque groove, or a low torque groove, wherein the groove torques of the first groove and the second groove are different.

[0015] In one optional embodiment, both the straight wire arch groove and the differential force groove are designed as square tubular structures, suitable for adhesion to the molar position to fix the orthodontic archwire. The square tubular structure corresponding to the differential force groove is designed mesial-gingivally, wherein the extension line of one side port forms an acute angle with the extension line of the same side port of the square tubular structure corresponding to the straight wire arch groove.

[0016] In one alternative embodiment, the bracket body is movably provided with at least one cover plate adapted to self-lock the first groove and / or the second groove.

[0017] In one alternative embodiment, the cover plate is configured as one, the cover plate is slidably connected to the bracket body and fixed by a locking assembly, the bracket body is provided with a fixing groove, the locking assembly is disposed in the fixing groove, and the cover plate is adapted to slide back and forth and be fixed by the locking assembly to alternately open or close the opening of the first groove or the second groove.

[0018] In one optional embodiment, two cover plates are provided, which slide on the bracket body respectively, and are fixed by a locking assembly. The bracket body is provided with a fixing groove, and the locking assembly is disposed in the fixing groove. The two cover plates are adapted to open or close the openings of the first groove and the second groove respectively, forming a double self-locking structure.

[0019] In one optional embodiment, the engaging assembly includes an arc-shaped elastic fastener, which is arranged in a gate shape. The elastic fastener is horizontally arranged in the fixing groove and its upper part protrudes above the fixing groove by a predetermined height. Two insertion holes are respectively opened at intervals at the bottom end of the fixing groove. The two ends of the elastic fastener are respectively embedded and fixed in the two insertion holes. An included angle is formed on both sides of the fixing groove, and the vertical columnar bodies on both sides of the elastic fastener are respectively locked in the included angle.

[0020] In one optional embodiment, the bracket body is provided with a gingival working wing, a central working wing and an incisional working wing respectively from the gingival end to the incisional end. The gingival working wing and the central working wing form a first groove or a second groove, and the central working wing and the incisional working wing form a second groove or a first groove. The cover plate is movably connected to the central working wing.

[0021] In an optional embodiment, an auxiliary groove is also provided on the gingival or incisional sidewall of the bracket body. The auxiliary groove is configured as a straight wire arch groove or a differential force groove, which is suitable for a certain stage of treatment and works synergistically with the first groove or the second groove.

[0022] The straight wire bow groove is a high torque groove, a medium torque groove, or a low torque groove, and the differential power groove is a high torque groove, a medium torque groove, or a low torque groove.

[0023] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0024] 1. Organic Integration of Two Technologies: The brackets employ an innovative dual-groove design, with one groove being the classic straight wire groove and the other a Tip-Edge groove (differential dynamic groove). This structure allows clinicians to flexibly choose between differential dynamic technology, straight wire technology, or a combination of both, depending on the needs of the treatment stage. This organic integration fully leverages the core advantages of both technologies, retaining the precise three-dimensional control of straight wire technology while showcasing the lightweight and efficient characteristics of differential dynamic technology, thus mechanistically avoiding the limitations of single-technology and single-groove bracket applications. By precisely matching the biomechanical needs of different treatment stages, it significantly improves treatment efficacy and effectively shortens the overall treatment cycle.

[0025] 2. Three-in-One Tray Design: This integrated torque control design breaks through the functional limitations of traditional single-groove trays, constructing a "three-in-one" tray design system: one tray integrates high, medium, and low torque control functions (e.g., the first groove is preset to medium torque, the second groove to high torque, and the auxiliary groove to low torque), replacing the traditional three sets of high, medium, and low torque trays. This integrated design not only significantly simplifies clinical operation procedures but also significantly reduces management costs and operational complexity by reducing the types and quantities of trays in stock.

[0026] 3. The highly efficient distalization mechanism of the entire dental arch utilizes a unique square tubular structure in the molar region. Clinically, only the archwire needs to be inserted, eliminating the need for cumbersome locking or ligation procedures. The square tubular structure of the differential force groove is offset mesially towards the gingiva, and its extension forms an acute angle with the straight wire groove, creating a completely new mechanical transmission path. When the archwire is inserted into the differential force groove, both anterior and posterior teeth can easily tilt and move distally, making it particularly suitable for cases of mild dental arch protrusion. This non-extraction orthodontic approach achieves overall posterior displacement of the entire dental arch, significantly improving the minimally invasive nature of the treatment.

[0027] 4. Dynamic Balance Orthodontic Technique: The modified differential dynamic groove retains the differential effect of mesiodistal tilting movement of teeth, and through a high-torque groove design, the square wire can achieve torque control. This design, which "controls" the torque while maintaining the "released" state of the axial tilt, allows the teeth to quickly complete mesiodistal tilting movement in a low-resistance mode within the cancellous bone, significantly improving the biomechanical precision of the orthodontic process and patient comfort.

[0028] 5. Dual-Wire Synergistic Protection System: Abandoning the mechanical drawbacks of traditional single-wire retraction methods, this innovative system employs a "dual-wire retraction" technique that combines the traction archwire and rocking archwire. The archwire near the gingival groove simultaneously retracts six anterior teeth, while the nickel-titanium rocking archwire near the incisal groove effectively "controls" torque, ensuring synchronized root and crown retraction. Because the point of application of the traction force is closer to the center of anterior tooth resistance, it effectively prevents torque reduction or loss during retraction, significantly reducing the risks of bone opening and root resorption, providing dual mechanical protection for orthodontic safety.

[0029] 6. Filling a technological gap: The world's first Tip-Edge self-ligating solution fills the gap in Tip-Edge brackets without self-ligating brackets, expanding the functionality and application scope of Tip-Edge orthodontic technology.

[0030] 7. Highly Efficient Dual Self-Locking Design: Achieves independent self-locking function in both grooves, significantly simplifying clinical procedures through an innovative locking structure. Compared to the cumbersome ligation steps of traditional brackets, the dual self-locking design significantly reduces operational difficulty and chairside time, improving treatment efficiency and creating an efficient and convenient treatment experience for both doctors and patients.

[0031] 8. Stable and Reliable Structure: Utilizing an innovative structure that combines arc-shaped (gate-shaped) elastic fasteners with fixing grooves, the system's tensile strength is significantly enhanced through optimized mechanical design. This structural design ensures stable sliding of the cover plate, effectively preventing dislocation and providing continuous and reliable mechanical performance throughout the entire orthodontic process, ensuring the stability and accuracy of orthodontic force transmission. Through multi-dimensional technological innovation, this bracket system achieves a comprehensive upgrade in biomechanical mechanisms, clinical operability, and treatment safety, providing an efficient and precise solution for modern orthodontic treatment.

[0032] 9. This utility model utilizes the functions of the first protrusion, the second protrusion, and the third protrusion. The gap between the first and second protrusions allows the elastic fastener to be engaged within it, thus limiting and fixing the cover plate when it slides backward to open the opening of the straight wire bow groove and lock the opening of the differential power groove. The gap between the second and third protrusions allows the elastic fastener to be engaged within it, thus limiting and fixing the cover plate when it slides forward to lock the opening of the straight wire bow groove and open the opening of the differential power groove. This design offers high flexibility, a simple structure, and convenient use. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the dual-system dual-main-groove support provided by this utility model;

[0034] Figure 2 A schematic diagram of the structure of the dual-system dual-main-groove bracket provided by this utility model when it contains a cover plate (when the bracket body and the cover plate are separated);

[0035] Figure 3 This is a schematic diagram of the bottom of the cover plate when the bracket body and the cover plate are separated in an embodiment of this utility model;

[0036] Figure 4 This is a schematic diagram of the structure of a single cover plate locking one of the grooves in an embodiment of this utility model;

[0037] Figure 5 This is a schematic diagram of the structure when a single cover plate locks another groove in an embodiment of this utility model;

[0038] Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure along line AA;

[0039] Figure 7 for Figure 5 Schematic diagram of the cross-sectional structure of the middle BB line;

[0040] Figure 8 This is a schematic diagram of the structure of different torque grooves in the embodiments of this utility model (excluding the cover plate);

[0041] Figure 9This is a front view structural diagram of different torque grooves in embodiments of this utility model (excluding the cover plate);

[0042] Figure 10 A schematic diagram of the structure when the double cover plates lock the grooves respectively, as designed for an embodiment of this utility model;

[0043] Figure 11 A schematic diagram of the structure of one of the double cover plates designed for an embodiment of this utility model when one of the cover plates locks one of the grooves;

[0044] Figure 12 A schematic diagram of the structure when one of the double cover plates in the embodiment of this utility model locks the other groove;

[0045] Figure 13 for Figure 10 Schematic diagram of the cross-sectional structure of the middle CC line;

[0046] Figure 14 for Figure 11 Schematic diagram of the cross-sectional structure of the middle DD line;

[0047] Figure 15 for Figure 12 Schematic diagram of the cross-sectional structure of the middle EE line;

[0048] Figure 16 A schematic diagram of the dual-system dual-main-groove support provided by this utility model in use (with one cover);

[0049] The attached figures are labeled as follows:

[0050] 1. Support body; 101. First groove; 102. Second groove; 103. Auxiliary groove;

[0051] 2. Gingival working wing; 21. Unlocking groove; 22. Cross-section; 3. Central working wing; 31. Slide groove; 32. Fixing groove; 33. Elastic fastener; 34. Slide rail; 4. Cutting end working wing;

[0052] 5. Cover plate; 51. Slider; 52. First protrusion; 53. Second protrusion; 54. Third protrusion. Detailed Implementation

[0053] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0054] In the entire process of orthodontic treatment, differential force technology is usually used in the first and second stages of treatment, and straight wire arch technology is used in the third stage. This hybrid application can combine the advantages of both and eliminate their disadvantages.

[0055] In the dental industry, based on the orientation of the teeth, the portion closer to the cusp is generally defined as the incisal edge (occlusal edge), and the portion closer to the gingiva is defined as the gingival edge. Similarly, in the orthodontic industry, after attachments are bonded to the tooth surface, the portion closer to the cusp is called the incisal edge, and the portion closer to the gingiva is called the gingival edge.

[0056] Shaft tilt: refers to the degree of lateral tilt; torque: refers to the degree of longitudinal tilt.

[0057] The following is combined with Figures 1 to 16 The following describes embodiments of the present invention.

[0058] Please see Figure 1 This embodiment discloses a dual-system dual-main-groove bracket, including a bracket body 1, a first groove 101, and a second groove 102; the bottom of the bracket body 1 is provided with a base, which is suitable for contacting the teeth; the first groove 101 is formed on the front surface of the bracket body 1 near the gingival end; the second groove 102 is formed on the front surface of the off-cut end of the bracket body 1 and is arranged side by side and spaced apart from the first groove 101, and the cavities of the first groove 101 and the second groove 102 are different.

[0059] In the above embodiments, the base at the bottom of the bracket body 1 is used to apply enamel adhesive before the bracket body 1 is pressed onto the tooth surface. The first groove 101 can be designed as a straight wire groove, a differential power groove, or other grooves as needed. Similarly, the second groove 102 can be designed as a differential power groove, a straight wire groove, or other grooves. The diameter of the groove opening of the differential power groove gradually increases from the middle to the two side ports. The first groove and the second groove can also be designed as the same type of groove, such as both being designed as straight wire grooves or both being designed as differential power grooves. When the two grooves are designed as the same type of groove, their torques are different. For example, one straight wire groove is a high torque groove, and the other straight wire groove is designed as a medium torque or low torque groove. Similarly, the differential power groove is also designed with grooves of different torques. No limitation is made here, and the design is based on the usage requirements or scenario.

[0060] In the design of this utility model, the first groove 101 is designed as a straight wire bow groove, and the second groove 102 is designed as a differential power groove. The openings of the straight wire bow groove and the differential power groove are parallel to each other, and the two grooves are opened to the same depth.

[0061] It should be noted that the differential power groove is similar to the Tip-Edge system groove, but the torque can be varied. Only the groove neck (the middle position of the groove) in the middle area is the same width as the ordinary groove (straight wire bow groove). From the groove neck to both sides (from the middle position of the groove to the two side ports), the groove opening is wider than the standard groove opening, and the width increases with distance from the groove neck. The two ports of the groove are like two trumpets (the shape of the groove opening diameter from the middle of the groove to the two side ports).

[0062] In the above embodiments, straight wire grooves and differential force grooves are set without significantly changing the original bracket volume, so that a bracket body has two grooves at the same time: differential force groove and straight wire groove. Differential force technology or straight wire technology or both technologies can be selected according to the needs of different treatment stages. During the treatment stage, the advantages of these two technologies are effectively combined, and the treatment effect is improved through biwire orthodontics.

[0063] In practical use, the bracket body 1 is bonded to the tooth surface, with one bracket body 1 bonded to each tooth. When using a straight wire archwire groove alone, the archwire is placed in the groove and secured by ligation. The archwire exerts force on the tooth through the groove data (including axial tilt angle, torque angle, etc.), thus correcting the tooth under the action of force. Similarly, when using a differential force groove alone, the archwire is placed in the groove and secured by ligation. The archwire exerts force on the tooth through the bracket, thus correcting the tooth under the action of force. When it is necessary to combine the straight wire archwire groove and the differential force groove, the archwire is inserted into both grooves and secured by ligation.

[0064] It should be noted that the straight wire archway and the differential force archway of this invention can be used independently. When using the straight wire archway, it applies to the straight wire technique, allowing the teeth to move as a whole after the entire archwire is fully inserted into the slot during correction. When using the differential force archway, it applies differential force technology, causing the teeth to move at an angle along the archwire. Furthermore, during tooth movement, the archwire and the raised bottom of the differential force archway make point contact, reducing friction.

[0065] The straight wire arch groove and differential power groove of this invention are often used in combination, that is, a combination of straight wire arch technology and differential power technology. When the differential power technology component is used more extensively, it can be called "differential power straight wire arch technology" (e.g., differential power technology is used for the first and second stages of treatment, and straight wire arch technology is used for the third stage). When the straight wire arch technology component is used more extensively, it can be called "straight wire arch differential power technology" (e.g., differential power technology is used for the first stage of treatment, and straight wire arch technology is used for the second and third stages).

[0066] Operating steps for "Differential Dynamic Straight Wire Bow Technology":

[0067] In the first stage of orthodontic treatment, which involves aligning teeth and opening the bite, and in the second stage, which involves closing gaps and adjusting molar relationships, differential force techniques are primarily used. In the third stage, which involves adjusting the tooth axis and torque, straight wire techniques are employed. In the first stage, brackets are not bonded to the upper and lower premolars. A 0.016-inch Australian wire is bent at approximately 2mm mesial to the buccal canal of the upper bilateral first molars, creating a 35° backward tilt. A stop bend is also made mesial to the buccal canal of the lower bilateral first molars to maintain arch length and the 35° backward tilt. Class II intermaxillary traction is performed using 1 / 4-inch and 2.0-ounce rubber bands. The principle of fine-wire, light-force differential orthodontic technique is used to align the upper and lower teeth, open the bite, and simultaneously retract the upper anterior teeth. In the second stage, "Z" traction is used to close gaps. Later, brackets are bonded to the upper and lower premolars using nickel-titanium round wire to align the lower teeth. Subsequently, the archwire is gradually changed from thin to thick and from soft to hard, and straight wire techniques are used to adjust the tooth axis and torque.

[0068] Operating steps for "Straight Wire Bow Differential Dynamic Technology":

[0069] In the first stage of orthodontic treatment, which involves aligning teeth and opening the bite, differential force grooves and differential force techniques are used. In the second stage, which involves closing gaps and adjusting molar relationships, and in the third stage, which involves adjusting tooth axis and torque, straight wire techniques are used.

[0070] In one alternative implementation, please refer to Figure 8 and Figure 9 The first groove 101 is a medium torque groove, a high torque groove, or a low torque groove, and the second groove 102 is a high torque groove, a medium torque groove, or a low torque groove. The groove torques of the first groove 101 and the second groove 102 are different.

[0071] Specifically, the first groove 101 can be designed as a medium torque groove, while the second groove 102 can be designed as a high torque groove; similarly, the first groove 101 can also be designed as a high torque groove, while the second groove 102 can be designed as a medium torque groove. The two grooves can be designed as grooves with different torques according to the requirements, and no restrictions are made here.

[0072] In one optional embodiment, both the straight wire arch groove and the differential force groove are designed as square tubular structures, suitable for adhesion to the molar position to fix the orthodontic archwire. The square tubular structure corresponding to the differential force groove is designed mesial-gingivally, wherein the extension line of one side port forms an acute angle with the extension line of the same side port of the square tubular structure corresponding to the straight wire arch groove.

[0073] It should be noted that, as Figure 10As shown, in a set of multiple brackets, different tooth positions use corresponding brackets, and the structures of their straight wire arch grooves and differential force grooves can be different. For example, the brackets used on premolars and molars (corresponding to the two teeth on the left side of the figure respectively) can be designed as square tube structures for straight wire arch grooves and differential force grooves (i.e., the groove of the bracket body without a cover is a closed structure), which has the effect of reducing friction, similar to self-ligating brackets. Clinically, the orthodontic wire can be inserted without ligation. The brackets on the anterior teeth can be made into completely open straight wire arch grooves and differential force grooves with covers (the brackets with covers do not need to be ligated, while the brackets without covers need to be ligated). After the orthodontic archwire is inserted into the square tube structure bracket of the premolars and molars, it enters the groove horizontally at the anterior teeth, and finally the entire archwire is completely inserted into the groove. The design of the square tube corresponding to the differential force groove is designed to form an acute angle with the buccal tube corresponding to the straight wire groove, so that the anterior and posterior teeth can tilt and move distally (posteriorly) when the labial arch is in the differential force groove. This is used to treat mild dental arch protrusion (upper or lower dental arch) without tooth extraction, and can tilt and move all teeth posteriorly.

[0074] In one alternative implementation, please refer to Figure 2 , 4 5, 6, and 7: A cover plate is movably disposed on the bracket body 1 to self-lock the first groove 101 or the second groove 102. Through the action of the self-locking cover plate, the openings of the first groove 101 and the second groove 102 can be alternately opened or closed, providing high flexibility and achieving a dual-purpose locking function. This simplifies the orthodontic operation process and reduces the difficulty and workload of operation.

[0075] Specifically, the cover plate 5 is slidably connected to the bracket body 1 and fixed by a locking assembly. The bracket body 1 is provided with a fixing groove 32, and the locking assembly is disposed in the fixing groove 32. The cover plate 5 is adapted to slide back and forth and is fixed by the locking assembly to alternately open or close the opening of the first groove 101 or the second groove 102.

[0076] In one alternative implementation, please refer to Figure 10-15Two cover plates 5 are movably disposed on the bracket body 1 to self-lock the first groove 101 or the second groove 102. The two cover plates 5 slide on the bracket body and are fixed by a locking assembly. The bracket body 1 is provided with a fixing groove 32, and the locking assembly is disposed in the fixing groove 32. The two cover plates 5 are adapted to open or close the openings of the first groove 101 and the second groove 102 respectively, forming a double self-locking structure. Specifically, two cover plates 5 are each individually mounted on the bracket body 1 and can slide independently. The length of the two cover plates 5 when they are pressed together is the same as the length of a single cover plate 5. This effectively separates the single cover plate 5 in the previous embodiment into two parts. When the two parts of the cover plate 5 slide in opposite directions, they lock the adjacent groove openings respectively. Similarly, when one part of the cover plate 5 slides in a direction closer together, it opens the corresponding groove opening and simultaneously pushes the other part of the cover plate 5 to lock the opening of the other groove. In other words, when one part of the cover plate 5 opens one groove opening, it simultaneously pushes the other part of the cover plate 5 to lock the other groove opening. This allows for the individual closing (or selective closing / opening) of two grooves on the same bracket, offering greater flexibility and practicality compared to the structure with only one cover plate.

[0077] In one optional embodiment, a sliding groove 31 is formed on the end face between the first groove 101 and the second groove 102. Both ends of the sliding groove 31 are open structures. A cover plate 5 is disposed on the sliding groove 31 and is slidably connected to the sliding groove 31 by a sliding assembly. A fixing groove 32 is recessed on the end face of the sliding groove 31. There is one fixing groove 32 corresponding to one cover plate 5, and two fixing grooves 32 spaced apart corresponding to two cover plates 5. The fixing grooves 32 for one cover plate 5 and two cover plates 5 have the same structural shape. The engaging assembly is fixed in the fixing groove 32, and the cover plate 5 moves back and forth on the sliding groove 31 under the action of the sliding assembly.

[0078] In the bracket with only one cover plate 5, when one end of the cover plate 5 near the first groove 101 slides out of the slide groove 31 and abuts against the side wall of the first groove 101, it will close the opening of the first groove 101. When one end of the cover plate 5 near the second groove 102 slides out of the slide groove 31 and abuts against the side wall of the second groove 102, it will close the opening of the second groove 102. When the cover plate 5 locks or opens the opening of the first groove 101 or the second groove 102, the cover plate 5 will be fixedly engaged with the engaging assembly.

[0079] In the bracket with two cover plates 5, when one of the cover plates 5 near the first groove 101 slides out of the slide groove 31 and abuts against the side wall of the first groove 101, it will close the opening of the first groove 101. When the other cover plate 5 near the second groove 102 slides out of the slide groove 31 and abuts against the side wall of the second groove 102, it will close the opening of the second groove 102. When the two cover plates 5 lock the openings of the first groove 101 and the second groove 102 respectively, the two cover plates 5 will be fixedly engaged on the locking assembly. Similarly, when one of the cover plates 5 slides in its respective direction (towards each other), it will open the opening of one of the grooves (the first groove 101 or the second groove 102), resulting in a situation where the opening of one groove is locked while the opening of the other groove is open. That is, the openings of the two grooves can only be locked individually at the same time, and the openings of the two grooves cannot be opened at the same time. It is only possible to open one part of the cover 5 first, take out (put in) the bow wire to close the groove, and then open the other part of the cover 5.

[0080] In actual use, when a bracket with only one cover plate 5 is used, the bracket body 1 is first bonded to the tooth surface, with one bracket body 1 bonded to the tooth surface of each tooth. When the straight wire arch groove is used alone, the cover plate 5 is slid towards the differential force groove to open the straight wire arch groove, and the archwire is placed in the straight wire arch groove. Then, the cover plate 5 is slid up to the top of the straight wire arch groove to close the opening of the groove, so that the archwire is confined in the groove. The archwire exerts force on the tooth through the groove data (including axial tilt angle, torque angle, etc.), so that the tooth to be treated is corrected under the action of the force. Similarly, when choosing to use the differential power slot alone, slide the cover plate 5 towards the straight wire slot to open the differential power slot, place the archwire into the differential power slot, and then slide the cover plate 5 above the differential power slot to close the opening of the slot, so that the archwire is confined in the slot. The archwire exerts force on the teeth through the bracket, so that the teeth to be treated are corrected under the action of the force. When straight wire arch support grooves and differential force grooves need to be used in combination, the archwire is inserted into the two grooves respectively. The cover plates 5 alternately close the openings of the two grooves at intervals. Specifically, when the cover plate 5 of one bracket closes the opening of the straight wire arch support groove, the cover plates 5 of the brackets on the adjacent sides of the bracket close the openings of the differential force grooves respectively. For example, odd-numbered teeth lock the straight wire arch support grooves, and even-numbered teeth lock the differential force grooves. That is, between brackets in different positions, the openings of the differential force grooves (or straight wire arch support grooves) are opened (or closed) at intervals by the cover plates 5, so that the archwires in both grooves can be confined in the grooves at the same time, achieving a stable closure effect, thereby achieving a better orthodontic effect. The process is relatively simple and highly flexible.

[0081] In actual use, the bracket with two cover plates 5 operates similarly to the bracket with only one cover plate 5. The difference is that when a straight wire bow groove and a differential power groove are used simultaneously on one bracket, the bracket with two cover plates 5 can directly lock the bow wires in the straight wire bow groove and the differential power groove on one bracket at the same time, without having to lock the bow wires in the straight wire bow groove and the differential power groove separately through two adjacent brackets.

[0082] Preferably, the left and right sides of the fixing groove 32 are each composed of two inclined surfaces. The engaging assembly includes an arc-shaped elastic buckle 33. The elastic buckle 33 is horizontally arranged in the fixing groove 32 and its upper part protrudes above the fixing groove 32 by a predetermined height. The two ends of the elastic buckle 33 are respectively connected to the bottom end of the fixing groove 32, and the two sides of the elastic buckle 33 are respectively engaged in the included angle formed by the two inclined surfaces.

[0083] Furthermore, two embedding holes are respectively opened at the bottom end of the fixing groove 32, and the two ends of the elastic buckle 33 are respectively embedded and fixed in the embedding holes.

[0084] In the above embodiment, the elastic buckle 33 is designed in an arc shape, specifically in a door-shaped configuration. Both ends of the elastic buckle 33 are inserted into two embedding holes for fixation. The fixing groove 32 is opened at the center of the sliding groove 31. The horizontal width of the opening of the fixing groove 32 is slightly larger than the width between the two sides of the elastic buckle 33, so that the two ends of the elastic buckle 33 are clamped in the included angle between the two sides of the fixing groove 32. By designing the elastic buckle 33 into an arc shape and clamping the two sides of the elastic buckle 33 in the included angle between the two sides of the fixing groove 32, the overall tensile strength of the elastic buckle 33 can be improved, making the arc-shaped elastic buckle 33 more robust and durable. As a result, the cover plate 5 is more stable during sliding and is not easy to dislodge.

[0085] In one optional embodiment, the sliding assembly includes a straight slide rail 34 and a slider 51. The slide rail 34 is formed on the groove 31, and the slider 51 is connected to the two side walls of the cover plate 5. The slider 51 is adapted to the slide rail 34, allowing the cover plate 5 to slide back and forth on the groove 31 to open or close the openings of the straight wire bow groove and the differential force groove. By setting the slide rail 34 and the slider 51, the cover plate 5 can move smoothly and stably back and forth on the groove 31, and it is also convenient to assemble the cover plate 5 and the bracket body 1 into one piece.

[0086] In one optional embodiment, the bracket body 1 is provided with a gingival working wing 2, a central working wing 3, and an incisional working wing 4 respectively from the gingival end to the incisional end. A straight wire arch groove is formed between the gingival working wing 2 and the central working wing 3, and a differential force groove is formed between the central working wing 3 and the incisional working wing 4. Alternatively, the differential force groove can be formed between the gingival working wing 2 and the central working wing 3, and a straight wire arch groove can be formed between the central working wing 3 and the incisional working wing 4. The specific design depends on the requirements, and both grooves can be designed as straight wire arch grooves or differential force grooves.

[0087] The cover plate 5 (one cover plate or two cover plates) is slidably connected to the central working wing 3; the cutting end working wing 4 is coaxially arranged with the central working wing 3 and its width is less than the width of the central working wing 3. The middle part of the end face of the central working wing 3 near the cutting end working wing 4 protrudes in the direction of the cutting end working wing 4 to form two inclined surfaces that are inclined towards the two ends of the groove.

[0088] Furthermore, the gingival working wing 2 and the cutting end working wing 4 are both provided with an L-shaped cross section 22 on the side near the straight wire arch groove or the differential force groove, which is suitable for accommodating the front end or the rear end of the cover plate 5 to completely cover the opening of the straight wire arch groove and the differential force groove.

[0089] In the above embodiment, the gingival working wing 2 and the incisional working wing 4 are connected to the section 22 near the section 22 and have an opening groove 21. By using a clinical tool through the opening groove 21, an external force is applied to the cover plate 5 to push the cover plate 5 to slide, so that the groove opens. When the cover plate 5 closes or opens the groove of the straight wire arch groove or the differential force groove, one end of the cover plate 5 will abut against the section 22. In addition to completely closing the opening of the groove, it can also play a certain limiting role for the cover plate 5.

[0090] It should be noted that when the cover plate 5 (one cover plate or two cover plates) of this utility model is assembled onto the central working wing through the slide groove 31, the cover plate 5 is first assembled onto the slide groove 31, and then the cutting end working wing 4 is welded onto the support body 1.

[0091] Preferably, in a slot with only one cover plate 5, the end face of the cover plate 5 is arc-shaped. The length of the cover plate 5 is slightly greater than the distance between the front sidewall of the straight wire arch groove and the front sidewall of the differential force groove, as well as the distance between the rear sidewall of the straight wire arch groove 101 and the rear sidewall of the differential force groove. The arc of the end face of the cover plate 5 is the same as the arc of the two end faces of the slide groove 31 of the central working wing 3 and is located on the same arc surface, improving the comfort during use. When one end of the cover plate 5 is completely abutted against the sidewall of the section 22, the other end of the cover plate 5 will be exactly flush with the sidewall of the central working wing 3, both located in the same vertical plane, avoiding the cover plate 5 being too long and covering the top of another groove, making it inconvenient to put the archwire in or take it out when the groove needs to be used.

[0092] Please see Figure 8 In one optional embodiment, an auxiliary groove 103 is further provided on the side wall of the bracket body 1 located at the gingival or incisal edge. The auxiliary groove is configured as a straight wire groove or a differential force groove, which is suitable for a certain stage of treatment and works in conjunction with the first groove or the second groove. In this way, the tooth can be tilted and moved under the action of the archwire, which is more flexible and practical. The bottom of the auxiliary groove 103 is horizontal or the middle part of the groove bottom protrudes towards the groove opening and the two sides are inclined towards the two ends of the groove opening. The straight wire groove is a high torque groove, a medium torque groove, or a low torque groove, and the differential force groove is a high torque groove, a medium torque groove, or a low torque groove.

[0093] For details, please refer to Figure 9 The auxiliary groove 103 is designed as a low-torque groove, the first groove 101 is designed as a high-torque groove, and the second groove 102 is designed as a medium-torque groove. The different torque grooves facilitate the control of torque in clinical practice. The three types of torque grooves increase the performance of the grooves. Different torque grooves can be selected according to actual needs to improve the treatment effect and thus expand the applicability of the grooves.

[0094] In one alternative implementation, please refer to Figure 3 , 67, 13, 14, 15. The bottom end of the cover plate 5 is provided with a limiting component corresponding to the engaging component. The cover plate 5 is locked and fixed by the cooperation of the limiting component and the engaging component. The limiting component includes a first protrusion 52, a second protrusion 53, and a third protrusion 54. The first protrusion 52, the second protrusion 53, and the third protrusion 54 are arranged in a straight line at intervals from front to back in the middle of the cover plate 5. The gap between the first protrusion 52 and the second protrusion 53 is suitable for the cover plate 5 to slide backward to cover the Tip-Edge groove and then lock onto the engaging component to lock and fix the cover plate 5. The gap between the second protrusion 53 and the third protrusion 54 is suitable for the cover plate 5 to slide forward to cover the straight wire arch groove and then lock onto the engaging component to lock and fix the cover plate 5. Further, the convex surface of the second protrusion 53 is an arc-shaped surface, and the side of the first protrusion 52 and the third protrusion 54 near the second protrusion 53 are both vertical surfaces.

[0095] In the above embodiment, the second protrusion 53 with an arc-shaped surface facilitates the compression of the elastic buckle 33 when the cover plate 5 slides back and forth. The gap between the first protrusion 52 and the second protrusion 53 is slightly larger than the outer diameter of the elastic buckle 33, so that the elastic buckle 33 is just locked in the gap between the first protrusion 52 and the second protrusion 53. This avoids the gap between the first protrusion 52 and the second protrusion 53 being too large, so that after the elastic buckle 33 is locked in, there is still a certain space, which makes the cover plate 5 sway slightly back and forth when subjected to external force, resulting in poor stability.

[0096] In this embodiment, through the actions of the first protrusion 52, the second protrusion 53, and the third protrusion 54, the gap between the first protrusion 52 and the second protrusion 53 allows the elastic fastener 33 to be engaged within it, so that when the cover plate 5 slides backward to open the opening of the straight wire bow groove and lock the opening of the Tip-Edge groove, the cover plate 5 is limited and fixed. The gap between the second protrusion 53 and the third protrusion 54 allows the elastic fastener 33 to be engaged within it, so that when the cover plate 5 slides forward to lock the opening of the straight wire bow groove and the differential force groove, it is engaged with the engaging assembly to lock and fix the cover plate 5. The gap between the second protrusion 53 and the third protrusion 54 is suitable for the cover plate 5 to slide forward to cover the straight wire bow groove and be engaged with the engaging assembly to lock and fix the cover plate 5. Furthermore, the convex surface of the second protrusion 53 is an arc-shaped surface, and the side of the first protrusion 52 and the third protrusion 54 near the second protrusion 53 are both vertical surfaces.

[0097] In the above embodiment, the second protrusion 53 with an arc-shaped surface facilitates the compression of the elastic buckle 33 when the cover plate 5 slides back and forth. The gap between the first protrusion 52 and the second protrusion 53 is slightly larger than the outer diameter of the elastic buckle 33, so that the elastic buckle 33 is just locked in the gap between the first protrusion 52 and the second protrusion 53. This avoids the gap between the first protrusion 52 and the second protrusion 53 being too large, so that after the elastic buckle 33 is locked in, there is still a certain space, which makes the cover plate 5 sway slightly back and forth when subjected to external force, resulting in poor stability.

[0098] In this embodiment, through the action of the first protrusion 52, the second protrusion 53, and the third protrusion 54, the gap between the first protrusion 52 and the second protrusion 53 can engage the elastic fastener 33, so that when the cover plate 5 slides backward to open the opening of the straight wire bow groove and lock the opening of the differential power groove, the cover plate 5 is limited and fixed. The gap between the second protrusion 53 and the third protrusion 54 can engage the elastic fastener 33, so that when the cover plate 5 slides forward to lock the opening of the straight wire bow groove and open the opening of the differential power groove, the cover plate 5 is limited and fixed. It has high flexibility, a simple structure, and is convenient to use.

[0099] In actual use, when the cover plate 5 slides on the groove 31 towards the straight wire arch groove, the sloped surface at the front end of the second protrusion 53 will press down on the elastic fastener 33, causing the elastic fastener 33 to deform and concave downwards. When the cover plate 5 continues to slide forward until it just abuts against the side wall of the cross section 22 of the gingival working wing 2 to close the opening of the straight wire arch groove, the elastic fastener 33 will be simultaneously and just rightly locked in the gap between the second protrusion 53 and the third protrusion 54, thus locking and fixing the cover plate 5. When it is necessary to open the opening of the straight wire arch groove or to move towards the differential force... When the differential force groove is closed by sliding in the direction of the groove, an external force is applied to the cover plate 5 with the help of a clinical tool to slide the cover plate 5 toward the differential force groove. During the sliding process, the slope surface at the rear end of the second protrusion 58 will squeeze the elastic buckle 33, causing the elastic buckle 33 to deform and be concave downward. When the cover plate 5 continues to slide backward until it just abuts against the side wall of the cut end working wing 4 to close the opening of the differential force groove, the elastic buckle 33 will be just locked in the gap between the first protrusion 52 and the second protrusion 53 at the same time, thus locking and fixing the cover plate 5.

[0100] Although the present invention has been described using the above preferred embodiments, it is not intended to limit the scope of protection of the present invention. Any changes and modifications made by those skilled in the art to the above embodiments without departing from the spirit and scope of the present invention shall still fall within the scope of protection of the present invention.

Claims

1. A dual-system dual-main-groove support, characterized in that, include: The bracket body has a base at its bottom, which is suitable for contacting with the teeth; The first groove is formed on the front side of the bracket body; The second groove is formed on the front side of the off-cut end of the bracket body and is spaced apart from the first groove; The first groove and the second groove have different cavities.

2. The dual-system dual-main-groove support bracket according to claim 1, characterized in that, The first groove is a straight wire bow groove or a differential power groove, and the second groove is a differential power groove or a straight wire bow groove, wherein the diameter of the groove opening of the differential power groove gradually increases from the middle to the two side ports.

3. The dual-system dual-main-groove support bracket according to claim 1, characterized in that, The first groove is a medium torque groove, a high torque groove, or a low torque groove, and the second groove is a high torque groove, a medium torque groove, or a low torque groove. The groove torques of the first groove and the second groove are different.

4. A dual-system dual-main-groove support bracket according to claim 2, characterized in that, Both the straight wire arch groove and the differential force arch groove are designed as square tubular structures, suitable for adhesion to the molar position to fix the orthodontic archwire. The square tubular structure corresponding to the differential force arch groove is designed mesial-gingivally, and the extension line of one end of the differential force arch groove forms an acute angle with the extension line of the same end of the square tubular structure corresponding to the straight wire arch groove.

5. The dual-system dual-main-groove support bracket according to claim 1, characterized in that, The bracket body is movably provided with at least one cover plate suitable for self-locking the first groove and / or the second groove.

6. The dual-system dual-main-groove support bracket according to claim 5, characterized in that, The cover plate is configured as one, and the cover plate is slidably connected to the bracket body and fixed by a locking assembly. The bracket body is provided with a fixing groove, and the locking assembly is disposed in the fixing groove. The cover plate is adapted to slide back and forth and is fixed by the locking assembly to alternately open or close the opening of the first groove or the second groove.

7. A dual-system dual-main-groove support bracket according to claim 5, characterized in that, The cover plate is configured as two, and the two cover plates slide on the bracket body respectively. The two cover plates are fixed by a locking assembly. The bracket body is provided with a fixing groove, and the locking assembly is disposed in the fixing groove. The two cover plates are adapted to open or close the openings of the first groove and the second groove respectively, forming a double self-locking structure.

8. The dual-system dual-main-groove support bracket according to claim 6 or 7, characterized in that, The locking assembly includes an arc-shaped elastic buckle, which is arranged in a gate shape. The elastic buckle is horizontally arranged in the fixing groove and its upper part protrudes above the fixing groove by a predetermined height. Two insertion holes are respectively opened at intervals at the bottom end of the fixing groove. The two ends of the elastic buckle are respectively embedded and fixed in the two insertion holes. An included angle is formed on both sides of the fixing groove, and the vertical columnar bodies on both sides of the elastic buckle are respectively locked in the included angle.

9. A dual-system dual-main-groove support bracket according to claim 4, characterized in that, The bracket body is provided with a gingival working wing, a central working wing and an incisional working wing respectively from the gingival end to the incisional end. The gingival working wing and the central working wing form a first groove or a second groove, and the central working wing and the incisional working wing form a second groove or a first groove. The cover plate is movably connected to the central working wing.

10. A dual-system dual-main-groove support bracket according to claim 1, characterized in that, The bracket body is further provided with auxiliary grooves on the gingival or incisional sidewalls. The auxiliary grooves are set as straight wire arch grooves or differential force grooves, which are suitable for a certain stage of treatment and work synergistically with the first or second groove. The straight wire bow groove is a high torque groove, a medium torque groove, or a low torque groove, and the differential power groove is a high torque groove, a medium torque groove, or a low torque groove.

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