Double-arch-wire correction system capable of vertically entering groove in full-mouth mode

Abstract

The invention discloses a double-arch-wire orthodontic system capable of vertically entering a groove in a full-mouth mode. The double-arch-wire orthodontic system comprises a first arch wire, a second arch wire, a lock cover, a bracket, a pressing wing and an elastic pin shaft, a containing cavity extending from the gum side to the jaw side is formed in the bracket, the locking cover enters the containing cavity, and the pressing wing enters one side of the body part; the pressing wing comprises a pressing part and an ejection piece, and the pressing wing is rotationally connected to the body part through an elastic pin shaft; when the lock cover is inserted into the containing cavity, the ejection piece abuts against the bottom face of the lock cover, the elastic pin shaft drives the pressing wing to be tightly buckled on the lock cover, and therefore the lock cover is limited to be disengaged from the bracket in the gingival direction. According to the invention, the installation view is better, the operation sight is not shielded, the requirement on the manufacturing precision is greatly reduced, the effective control length of the main arch wire is obviously increased, and the lock cover is assembled tighter and tighter along with the chewing action and is not easy to fall off in the mouth.

Description

Technical Field

[0001] This invention relates to the field of orthodontics, specifically to a double archwire orthodontic system with full-mouth vertical entry. Background Technology

[0002] In the field of orthodontics, traditional fixed braces use a single archwire to control tooth movement. Single-archwire systems offer relatively weak control over teeth in three dimensions, such as torque, anchorage, and individual tooth movement, resulting in less than ideal control. This is particularly true in extraction-based orthodontic cases, where closing the extraction gaps after tooth alignment can easily lead to new malocclusions. For example, in cases involving mesiodistal movement of posterior teeth, while a single-archwire system can provide sufficient corrective force, the inability to precisely control the tooth movement trajectory can cause mesiodistal tilting of posterior teeth during mesiodistal movement, directly resulting in increased overbite, lingual tipping of the crowns, and other malocclusion problems.

[0003] To address the issue of weak control in single-archwire orthodontic appliances, the applicant has independently developed several double-archwire fixed orthodontic appliances and applied for related patents. For details, please refer to: Chinese Utility Model Patent No. CN219089715U – A Removable Orthodontic Appliance; Chinese Invention Patent Application No. CN202210393172.4 – A Removable Orthodontic Appliance and its Manufacturing Method; and Chinese Invention Patent Application No. CN202311637073.7. Patent applications—a double-wire self-ligating bracket, its usage and application; Chinese invention application CN202310254929.6—a double-archwire orthodontic appliance with precise control over tooth movement; Chinese invention application CN202511477271.0—a removable self-ligating double-archwire orthodontic system; and Chinese invention application CN202510415385.6—a double-archwire orthodontic system with high connection stability. All the above-mentioned patents are patent applications filed by the applicant (Guangzhou Ruitong Biotechnology Co., Ltd.), and the corresponding orthodontic appliances are all products independently developed by the applicant and have been put into clinical application, accumulating a large number of case treatment examples.

[0004] Currently, the orthodontic appliance corresponding to Chinese invention application CN202510415385.6 – a double archwire orthodontic system with high connection stability – has shown good orthodontic effects according to feedback. However, after multiple trials and clinical applications, the applicant discovered that this orthodontic appliance still has some defects and shortcomings, including the following aspects:

[0005] (1) Insufficient field of vision. When installing the bow wire, the operator needs to use their fingers to press and fasten the fitting (including the lock cover and two bow wires) from the tongue side to the cheek side (which is horizontal) into the bracket. Understandably, at this time, the operator observes the environment on the tongue side through the reflection of the mirror, that is, the field of vision is consistent with the installation direction. However, during the installation process, the lock cover is usually covered by the operator's fingers, resulting in poor installation field of vision for the operator. It is difficult to see the matching structure between the lock cover and the bracket, and it is often necessary to align it repeatedly to match it into the bracket.

[0006] (2) The manufacturing precision requirements are too high. Referring to paragraphs

[0045] and

[0046] of the specification of CN202510415385.6, the lock cover is engaged with the limiting protrusion in the bracket through the limiting groove, thereby preventing the lock cover from coming out of the bracket; or, the lock cover is engaged with the first inverted recess of the bracket through the first limiting wing and the second limiting wing, in order to prevent the lock cover from coming out of the bracket. However, the bracket and the lock cover themselves are already very small in size. For example, the common bracket specifications are groove sizes of 0.022*0.028 inches or 0.018*0.025 inches. Further processing more delicate structures such as long protrusions and limiting wings on such small brackets and lock covers requires very high manufacturing precision, and they are very prone to wear and failure later.

[0007] (3) Short effective control length of the main archwire. The size of the first archwire hole (main archwire hole) of the lock cover cannot be made to match the size of the groove of the bracket. This is determined by the assembly relationship between the lock cover and the bracket. Since the main archwire must pass over protruding structures such as limiting ridges or limiting wings during the insertion process to achieve locking, in order to avoid interference between the main archwire and the groove of the bracket during this obstacle-crossing process, the main archwire hole of the lock cover must be made smaller than the groove of the bracket (specifically, the size of the cross-sectional area). Therefore, the main archwire and the groove of the bracket are actually suspended and not fitted. The effective control length of the main archwire is only the length connected to the lock cover. The short effective control length leads to poor archwire expression, weak orthodontic control, and poor orthodontic effect.

[0008] (4) When the patient is chewing food, the food frequently comes into contact with and presses the pressure wing. When the pressure wing is loosened by pressure, it may rotate and push the lock cover out of the bracket. Since the lock cover is installed in the bracket along the cheek side, it is easy to fall out horizontally from the bracket after being pushed by the pressure wing, which will cause the archwire to fail. Summary of the Invention

[0009] To overcome the shortcomings of the existing technology, the purpose of this invention is to provide a double archwire orthodontic system with full-mouth vertical entry, which can solve the problems of poor field of vision, high manufacturing precision requirements, short effective control length of archwire, and easy dislodgement during eating in existing double archwire orthodontic systems.

[0010] This invention is achieved through the following technical solution:

[0011] A full-mouth vertical access double-archwire orthodontic system includes: a first archwire and a second archwire; a locking cap with a first archwire hole and a second archwire hole; the first archwire and the second archwire are respectively inserted into the first archwire hole and the second archwire hole of the locking cap along the mesiodistal direction to form a wearable device; the number and position of the locking caps correspond one-to-one with the brackets; the bracket includes a base plate and a body protruding from the bottom; the body has a receiving cavity extending from the gingival side to the occlusal side, the gingival side of the receiving cavity is an open top for the locking cap to enter, and the occlusal side has a supporting surface; the body has an archwire groove along the mesiodistal direction; The body has a side opening on the side opposite to the base plate for the pressing wing to enter the receiving cavity; the pressing wing includes a pressing part and an ejector; the pressing wing is rotatably connected to the body via a flexible pin, so that the ejector can enter or exit the receiving cavity; when the lock cover is inserted into the receiving cavity, the ejector abuts against the bottom surface of the lock cover, and the flexible pin drives the pressing wing to fasten to the lock cover, thereby preventing the lock cover from dislodging from the bracket towards the gum; when the pressing part is pressed and rotated, the flexible pin is compressed, and the ejector pushes the lock cover towards the gum, causing the lock cover to exit the bracket.

[0012] Furthermore, the lock cover is provided with a slot, and the pressing wing also includes a latch that matches the slot, the latch being positioned above the ejector; when the lock cover is inserted into the receiving cavity, the latch is fastened to the slot along the lip to prevent the lock cover from exiting the bracket towards the gum side; when the pressing part is pressed and rotated, the latch exits the slot, and at the same time the ejector pushes the lock cover out of the bracket.

[0013] Furthermore, the width of the first archwire hole is the same as the width of the archwire groove; when the lock cover is inserted into the accommodating cavity, the bottom surface of the first archwire hole and the bottom surface of the archwire groove are at the same horizontal level, so that the first archwire rests on the archwire groove.

[0014] Furthermore, a first protrusion is provided on the inner side of the pressing part, and a second protrusion is formed on one side of the supporting surface of the body part; when the pressing wing is pressed and rotated to unlock, the first protrusion passes over the second protrusion and is locked onto the second protrusion, so that the pressing wing is fixed to maintain its opening angle.

[0015] Furthermore, an arc-shaped guide surface is provided at the entrance position of the slot of the lock cover, and an arc-shaped mating surface is provided at the lower end of the latch of the pressing wing, so that the latch smoothly transitions into the slot when rotating.

[0016] Furthermore, the body has a U-shaped structure, one side of the body is connected to the bottom plate, and the other side has a side opening for the ejector and the latch to enter; the body forms a U-shaped accommodating cavity.

[0017] Furthermore, the two inner sides of the body are provided with arc-shaped groove guide surfaces at the top opening position relative to the accommodating cavity.

[0018] Furthermore, the side opening on one side of the body is a recessed structure; when the pressing wing locks the cover, the pressing wing is completely accommodated within the body in its thickness direction, and the outer surface of the pressing wing is flush with the outer surface of the body.

[0019] Furthermore, the pressing part is recessed with a pressing hole to facilitate the insertion of the tip of an orthodontic tool.

[0020] Furthermore, the first archwire is fixedly or slidably inserted into the first archwire hole, and the second archwire is fixedly inserted into the second archwire hole.

[0021] Compared with existing technologies, the beneficial effects achieved by this invention are as follows:

[0022] Before wearing the archwire, the first and second archwires are pre-assembled into the respective locking caps, forming a single integrated piece. When wearing or changing the archwire, the entire integrated piece is placed into the mouth, with the locking caps and brackets installed one by one. The locking cap is placed on the gingival side of the bracket and then inserted into the receiving cavity of the bracket along the lateral direction. The bottom of the locking cap is pressed against the ejector of the pressing wing. Simultaneously, the first archwire is placed into the archwire groove of the bracket. The elastic force of the elastic pin drives the pressing wing to fasten the locking cap, thus preventing the locking cap from slipping out of the top opening of the receiving cavity. After each locking cap is inserted into its corresponding bracket, the entire piece of the integrated piece is installed, which also completes the archwire installation.

[0023] When removing the bowwire, use your fingers or a tool to press and rotate the pressing wing. The pressing wing will disengage from the side opening of the bracket and release the locking action on the cover. At the same time, the ejector will push the cover upwards and towards the gum line, causing the cover to exit the receiving cavity of the bracket. After pressing each cover out of its slot, the entire accessory can be removed.

[0024] (1) The present invention provides a good field of vision during installation. During assembly, the locking cap is held by the fingers on both sides in the mesial and distal directions, and the locking cap is placed on the gingival side of the bracket and inserted into the bracket in the occlusal direction for installation. Since the operator's line of sight is usually from the lingual side to the buccal side, the installation direction and the line of sight do not interfere with each other. This allows the operator to clearly see the trajectory of the locking cap into the bracket and align the two corresponding matching structures. The locking cap can be installed or removed quickly in one go. Compared with the previous method where the field of vision was obstructed and the position needed to be repeatedly aligned, the present invention has a higher efficiency in insertion and removal.

[0025] (2) Reduced requirements for manufacturing precision. The lock cover enters the groove vertically and does not move horizontally during the process. It is always limited by the body in the horizontal direction. This means that only the lock cover and the main body of the bracket need to be formed during manufacturing. There is no need to add small and delicate structures such as protrusions or limiting wings to the main body to achieve the limiting. For the bracket and lock cover, which are already very small in size, the manufacturing precision and difficulty are greatly reduced. Moreover, failure due to wear is less likely to occur later.

[0026] (3) The effective control length of the main archwire is significantly increased. Since the locking cap is inserted vertically throughout the entire process and does not require passing over protruding structures such as limiting strips or limiting wings to achieve locking, there is no horizontal movement during the vertical insertion process. This means that the main archwire will not interfere with the bracket during insertion. Therefore, the first archwire hole of the locking cap can be designed to be the same horizontal height and width as the archwire groove after insertion. After the locking cap is inserted, the main archwire can rest on the archwire groove of the bracket, with the bottom of the main archwire adhering to the bottom of the archwire groove. Previously, the main archwire and the archwire groove were suspended and not adhering. Thus, the effective control length of this invention is significantly increased, enhancing the expression effect of the archwire and strengthening both the corrective force and control effect.

[0027] (4) When the patient chews, the food at the incisal edge of the teeth acts on the occlusal side of the bracket, causing the bracket to move towards the gingival side and press against the locking cap. That is, with each chew, the bracket becomes increasingly tighter against the locking cap, making the locking cap fit more securely and less likely to fall off. This significantly enhances the connection stability between the locking cap and the archwire. Previously, the locking cap tended to loosen with chewing; in this invention, it tends to tighten. Therefore, the stability of the archwire in the mouth is significantly enhanced, which has positive clinical significance. Attached Figure Description

[0028] Figure 1 The figure shown is a schematic diagram of the overall wearing process of the present invention;

[0029] Figure 2 The diagram shows an assembly diagram of multiple brackets;

[0030] Figure 3 The image shown is a front view of multiple brackets;

[0031] Figure 4 The diagram shown is an exploded view of multiple brackets;

[0032] Figure 5 The diagram shown is an assembly schematic of a single bracket;

[0033] Figure 6 The image shown is a side view of a single bracket;

[0034] Figure 7 The diagram shown is an exploded view of a single bracket;

[0035] Figure 8 As shown Figure 7 Side view;

[0036] Figure 9 As shown Figure 8 A sectional view;

[0037] Figure 10 As shown Figure 9 A three-dimensional image;

[0038] Figure 11 The diagram shown is a schematic of the bracket structure;

[0039] Figure 12 The image shown is a side view of the bracket;

[0040] Figure 13 The diagram shown is a schematic of the press wing structure;

[0041] Figure 14 The diagram shows the structure of the lock cover, the first archwire, and the second archwire.

[0042] Figure 15 The image shown is a cross-sectional view of a single bracket structure in the prior art.

[0043] Figure 16 The image shown is a cross-sectional view of a single bracket structure in the prior art.

[0044] Figure 17 The image shown is a perspective view of a single bracket in the prior art.

[0045] Figure 18 The image shown is a side view of prior art.

[0046] In the diagram: 100, Wearing piece; 10, First bowwire; 20, Second bowwire; 30, Lock cover; 31, First bowwire hole; 32, Second bowwire hole; 33, Slot; 331, Arc-shaped guide surface; 40, Support slot; 41, Base plate; 42, Body; 421, Second protrusion; 422, Insertion guide surface; 43, Accommodating cavity; 44, Bowwire groove; 45, Side opening; 50, Pressing wing; 51, Pressing part; 511, First protrusion; 52, Ejector; 53, Lock; 54, Pressing hole; 60, Elastic pin; 70, Teeth; 80, Limiting protrusion; 90, Limiting wing. Detailed Implementation

[0047] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0048] In the description of this invention, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] This invention discloses a full-mouth vertical entry double archwire orthodontic system, which is applied in fixed orthodontic techniques. To facilitate understanding of the beneficial effects of this invention, the meanings of the various directions mentioned below are first clarified, including the three directions of tooth 70 movement: ① Gingioocclusal direction, specifically referring to the movement from the root apex of tooth 70 (i.e., the part of tooth 70 embedded in the alveolar bone) to the incisal edge of tooth 70 (i.e., the front end of the occlusal surface of tooth 70); ② Labiolingual or buccal-lingual direction, referring to the direction of tooth 70 from the lip side to the tongue side; ③ Mesiodistal direction, referring to the movement of tooth 70 from the side closer to the midline to the side farther from the midline.

[0052] See Figures 1-4 The present invention includes: a first archwire 10, a second archwire 20, a locking cover 30, a bracket 40, a pressing wing 50, and a resilient pin 60. (See reference...) Figure 4 , Figure 14 The number of locking caps 30 corresponds one-to-one with the brackets 40 and teeth 70. Each locking cap 30 has a first archwire hole 31 and a second archwire hole 32 along the mesial-distal direction. A first archwire 10 and a second archwire 20 are simultaneously threaded onto each locking cap 30, thus the first archwire 10, the second archwire 20, and the locking cap 30 together form an integrated fitting 100. Of course, for the locking cap 30 located at the last molar position, the ends of the first archwire 10 and the second archwire 20 are accommodated inside the locking cap 30 and do not protrude from the locking cap 30, to avoid the archwire tips scratching the oral mucosa. Those skilled in the art will know that multiple archwires need to be replaced during a complete orthodontic cycle; and in this orthodontic system, multiple fittings 100 as described above need to be replaced.

[0053] The first archwire 10 and the second archwire 20 together form a double archwire for correction. The working principle of the double archwire is as follows: (See reference) Figure 3The first archwire 10 acts as the main archwire, typically using a thicker, straight archwire with a smooth, arched shape. However, slight bends, such as mushroom bends, can be made at certain specific points as needed. The first archwire 10 is either slidably connected or fixedly connected to the locking cap 30. Sliding connection is more efficient for aligning teeth 70. The first archwire 10 provides a sliding rail-like support for the movement of teeth 70. The second archwire 20 acts as the auxiliary archwire, employing a multi-curved structure. This means that multiple curved structures are bent into the archwire to release orthodontic forces. These curved structures are formed by bending the orthodontic wire. Since the archwire itself is elastic, the elastic deformation of the curved structures continuously releases orthodontic forces, providing the primary control force for the movement of teeth 70. The curve structure can be any one or any combination of the following structural forms: boot-shaped curve, vertically open curve, open vertical curve, closed vertical curve, open vertical curve with loop, closed vertical curve with loop, horizontal curve, horizontal curve with loop, gate-shaped curve, omega curve, small loop curve, and other curve structure forms known in the field.

[0054] During orthodontic treatment, the second archwire 20 is fixedly locked to the locking cap 30. The orthodontic force released by the second archwire 20 through the curved structure acts sequentially on the locking cap 30 and the bracket 40, providing the main force for the movement of tooth 70. The first archwire 10 and the locking cap 30 can be relatively fixed or relatively sliding. For example, during the retraction of the extraction space, the locking cap 30 on one tooth position is relatively fixed to the first archwire 10, while the locking cap 30 on the other adjacent tooth position is relatively sliding. Thus, the first archwire 10 acts like a slide rail. When the relatively sliding locking cap 30 moves, it will synchronously pull the bracket 40 and the corresponding tooth position to move. In this way, when tooth 70 moves mesiodistally, the first archwire 10 provides support and guidance, preventing tooth 70 from tilting mesiodistally, avoiding problems such as deepening of anterior overbite and lingual tipping of the crown, and enhancing the control of torque, tilt, and torsion of tooth 70.

[0055] In particular, see Figures 11-12 , Figures 5-8 The bracket 40 includes a base plate 41 and a body 42 protruding from the base plate 41. The base plate 41 is tightly bonded to the patient's tooth surface. The body 42 refers to the protruding structure on the base plate 41. The body 42 has a U-shaped structure and an accommodating cavity 43 extending from the gingival side to the occlusal side. Specifically, the accommodating cavity 43 has a top opening on the gingival side for the locking cap 30 to enter, and its occlusal side has a support surface for supporting the locking cap 30. The body 42 also has an archwire groove 44 extending mesiodistally upward. After the locking cap 30 enters the body 42 of the bracket 40, the first archwire 10 is accommodated in the archwire groove 44; it can be understood that the archwire groove 44 is connected to the accommodating cavity 43. See also Figures 11-12One side of the body 42 is connected to the base plate 41, and the other side, that is, the side away from the base plate 41, has a side opening 45. Part of the structure of the pressing wing 50 can enter into or exit the receiving cavity 43 through the side opening 45.

[0056] See Figure 13 The pressing wing 50 includes a pressing part 51, an ejector part 52, and a locking latch 53. (See also...) Figures 5-10 The pressing part 51 is rotatably connected to the body part 42 via a flexible pin 60, which is specifically located below the accommodating cavity 43. The pressing part 51 protrudes vertically from the bottom of the body part 42. When the pressing part 51 is pressed, it rotates, causing the ejector 52 and the latch 53 to enter or exit the accommodating cavity 43. The lock cover 30 also has a groove 33 that matches the latch 53. Figure 7 .

[0057] The process for wearing and removing this orthodontic system is as follows:

[0058] See Figure 4 Before inserting the bowwire, the first bowwire 10 and the second bowwire 20 are pre-assembled into the respective locking covers 30, forming a single wearing piece 100. When inserting the bowwire, this single wearing piece 100 is placed into the patient's mouth. The locking covers 30 and the brackets 40 are installed in a one-to-one correspondence. For details, please refer to... Figures 5-10 The operator pinches the locking cap 30 on both sides in the mesial and distal directions, places the locking cap 30 on the gingival side of the bracket 40, and vertically inserts the locking cap 30 into the receiving cavity 43 of the bracket 40 along the occlusal direction. The bottom of the locking cap 30 presses down the ejector 52 of the pressing wing 50, causing the pressing wing 50 to rotate. The locking buckle 53 enters the receiving space through the side opening 45 of the body 42 and is engaged in the slot 33 of the locking cap 30 along the labial and lingual direction. At the same time, the force of the elastic pin 60 drives the locking buckle 53 to lock the slot 33, preventing the locking cap 30 from falling out in the gingival direction, thereby firmly locking the locking cap 30 in the bracket 40. Figure 2 and Figure 5 .

[0059] When removing, refer to Figures 9-10 Use your fingers or orthodontic tools to press and rotate the pressing wing 50. The locking 53 of the pressing wing 50 will exit from the side opening into the receiving cavity 43, releasing the lock on the slot 33. At the same time, the ejector 52 will rotate and push the locking cover 30 upward, causing the locking cover 30 to push towards the gum line, so that the locking cover 30 exits into the receiving cavity 43 of the bracket 40. After pressing each locking cover 30 out of the slot one by one, the entire wearer 100 can be removed, completing the removal of the archwire.

[0060] This invention has the following advantages:

[0061] (1) The present invention offers a good field of vision during installation. (See also...) Figure 4 and Figure 7 During assembly, the operator pinches the locking cap 30 on both sides in the mesial and distal directions with their fingers, places the locking cap 30 on the gingival side of the bracket 40, and inserts it into the bracket 40 in the occlusal direction for installation. Since the operator's line of sight is usually from the lingual side to the buccal side, the installation direction and the line of sight do not interfere with each other. This allows the operator to clearly see the vertical movement trajectory of the locking cap 30 into the bracket and align the two corresponding matching structures, enabling the locking cap 30 to be installed or removed quickly in one go. Compared to previous installation methods where the field of vision was obstructed and repeated alignment was required (see Chinese Invention Application No. CN202510415385.6 - A Double Archwire Orthodontic System with High Connection Stability), the present invention provides a better field of vision and higher efficiency in insertion and removal.

[0062] (2) The requirements for manufacturing precision have been reduced. See also Figures 8-10 The lock cover 30 enters the groove vertically and does not move horizontally upwards during the process, always being limited by the body 42 in the horizontal direction. This means that during manufacturing, only the main body of the lock cover 30 and the bracket 40 needs to be formed, without the need to add additional components such as the limiting protrusion 80 or the limiting wing 90 to the main body (see prior art for details). Figures 15-18 The use of such tiny and delicate structures to achieve positioning significantly reduces the manufacturing precision and difficulty for the already small bracket 40 and locking cover 30, and also makes it less prone to failure due to wear in the later stages.

[0063] (3) The effective control length of the main archwire is significantly increased. It should be noted that, in the past (e.g., Chinese invention application CN202510415385.6 – A dual archwire orthodontic system with high connection stability), prior art references... Figures 15-18 Because the lock cover 30 needs to be secured by a structure such as the limiting protrusion 80 or the limiting wing 90 after entering the groove, the lock cover 30 needs to pass over the arc-shaped protrusion on the limiting protrusion 80 or the limiting wing 90 during the assembly process, resulting in a movement trajectory that actually includes horizontal movement. To avoid the possibility of the archwire interfering with the archwire groove 44 of the bracket 40 during this arc-shaped movement, thus causing deformation, the cross-sectional dimension of the first archwire hole 31 of the lock cover 30 needs to be made smaller than the archwire groove 44 of the bracket 40. This allows for sufficient space for the main archwire to make the aforementioned arc-shaped movement within the groove. Therefore, after the lock cover 30 enters the groove, the first archwire 10 is suspended and not in contact with the archwire groove 44 of the bracket 40. Figure 18(As clearly shown); this results in the effective control length of the first bowwire 10 being only the length of its insertion into the lock cover 30, and the short control length leads to a relatively weak control force of the main bowwire.

[0064] The difference is that within this correctional system, see [reference] Figure 6 Because the locking cover 30 is inserted vertically into the groove throughout the entire process, it does not need to pass over protruding structures such as the limiting ridge 80 or limiting wing 90 as in the past to achieve locking. The entire insertion process is vertical, without any horizontal movement. This means that the main archwire will not interfere with the archwire groove 44 of the bracket 40 during vertical insertion. Thus, the first archwire hole 31 of the locking cover 30 can be designed to have the same width and height as the archwire groove 44. After the locking cover 30 is inserted into the groove, the bottom of the first archwire hole 31 and the bottom of the archwire groove 44 can be on the same horizontal plane. This means that the first archwire 10 can be placed on the archwire groove 44 of the bracket 40, with the bottom of the first archwire 10 fitting against the bottom of the archwire groove 44. It is understandable that since the length of the archwire groove 44 is larger than the first archwire hole 31 of the lock cover 30, the contact length between the first archwire 10 laid on the archwire groove 44 and the bracket 40 is increased, which significantly increases the effective control length of the main archwire, thereby enhancing the expressive effect of the archwire and strengthening both the corrective force and control effect.

[0065] (4) See Figure 4 and Figure 7 When the patient chews, food positioned at the incisal edge of tooth 70 acts on the occlusal side of bracket 40, causing bracket 40 to move towards the gingival side and simultaneously pressing against the locking cap 30. That is, with each chew, the locking cap 30 becomes increasingly pressed into bracket 40, making the fit of the locking cap 30 increasingly tight and less prone to dislodgement. This significantly enhances the connection stability between the locking cap 30 and the archwire. Previously, because the locking cap 30 was inserted into the bracket lingually (see...), Figures 15-18 As chewing continues, if the wing 50 is pressed, the locking cover 30 will tend to loosen; see [link / reference]. Figure 6 and Figure 9 In this invention, the effect of "the more you bite, the tighter it becomes" is achieved with eating, thus significantly enhancing the stability of the archwire in the mouth, which has positive clinical significance.

[0066] Preferably, see Figure 6 The width of the first archwire hole 31 of the lock cover 30 is the same as the width of the archwire groove 44. When the lock cover 30 is inserted into the accommodating cavity 43, the bottom surface of the first archwire hole 31 and the bottom surface of the archwire groove 44 are at the same horizontal level, so that the first archwire 10 is laid on the archwire groove 44 and the bottom of the first archwire 10 is attached to the bottom of the archwire groove 44, achieving a longer effective control length.

[0067] Preferably, see Figures 9-10 A first protrusion 511 is provided inside the pressing part 51 of the pressing wing 50, and correspondingly, a second protrusion 421 is formed on the supporting surface side of the body part 42. When the pressing wing 50 is pressed and rotated to unlock, the first protrusion 511 passes over the second protrusion 421 (the elastic pin 60 can produce tilting and bending deformation) and is locked onto the second protrusion 421, so that the pressing wing 50 can be fixed at a certain tilt angle after unlocking, maintaining an open posture, and opening the receiving cavity 43 of the bracket 40, making it easy to insert the lock cover 30. After the lock cover 30 is inserted, the lock cover 30 presses down the ejector 52 of the pressing wing 50, thereby overcoming the friction between the first protrusion 511 and the second protrusion 421, the pressing wing 50 returns to its original position, and then the force of the elastic pin 60 drives the pressing wing 50 to fasten the lock cover 30 in the bracket 40.

[0068] To allow the locking cover 30 to be locked more smoothly by pressing the wing 50, preferably, see [reference needed]. Figure 14 An arc-shaped guide surface 331 is provided at the entrance position of the slot 33 of the lock cover 30. Accordingly, see [reference needed]. Figure 13 The lower end of the latch 53 of the pressing wing 50 is provided with an arc-shaped mating surface, so that the latch 53 can smoothly transition into the slot 33 when rotating and locking.

[0069] Specifically, see Figures 11-12 The body 42 adopts a U-shaped structure. One side of the body 42 is connected to the base plate 41, and the other side has a side opening 45 for the ejector 52 and the latch 53 to enter the receiving cavity 43. A U-shaped receiving cavity 43 is formed inside the body 42.

[0070] To allow the locking cover 30 to enter the slot more smoothly and easily, and to reduce the difficulty of inserting the locking cover 30 into the slot, preferably, refer to Figures 11-12 The two inner sides of the body 42 are provided with arc-shaped groove guide surfaces 422 at the top opening position relative to the accommodating cavity 43.

[0071] Preferably, see Figure 11 The side opening 45 of the body 42 is a recessed structure; when the pressing wing 50 locks the cover 30, the pressing wing 50 is completely accommodated in the body 42 in its thickness direction, and the outer side of the pressing wing 50 is flush with the outer side of the body 42. This accommodating structural design ensures that the bracket 40 has a thin overall thickness.

[0072] Preferably, see Figure 5 A pressing hole 54 is also recessed on the pressing part 51 to facilitate the insertion and pressing of the tip of the orthodontic tool.

[0073] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A full-mouth vertical entry double archwire orthodontic system, characterized in that, include: First bowwire and second bowwire; The lock cover has a first archwire hole and a second archwire hole; the first archwire and the second archwire are respectively inserted into the first archwire hole and the second archwire hole of the lock cover along the mesial-distal-medial direction to form a wearing piece; the number and position of the lock covers correspond one-to-one with the brackets; The bracket includes a base plate and a body protruding from the bottom; the body has a receiving cavity extending from the gingival side to the occlusal side, the gingival side of the receiving cavity is a top opening for the locking cap to enter, and the occlusal side has a supporting surface; the body has an archwire groove along the mesiodistal direction; the side of the body opposite to the base plate has a side opening for the pressing wing to enter the receiving cavity; The pressing wing includes a pressing part and an ejector; the pressing wing is rotatably connected to the body part by a flexible pin, so that the ejector can enter or exit the receiving cavity; When the lock cover is inserted into the receiving cavity, the ejector abuts against the bottom surface of the lock cover, and the elastic pin drives the pressing wing to fasten to the lock cover, thereby preventing the lock cover from dislodging from the bracket towards the gum line; when the pressing part is pressed and rotated, the elastic pin is compressed, and the ejector pushes the lock cover towards the gum line, causing the lock cover to exit the bracket.

2. The full-mouth vertical entry double-archwire orthodontic system as described in claim 1, characterized in that, The lock cover is also provided with a slot, and the pressing wing also includes a latch that matches the slot, and the latch is located above the ejector. When the lock cover is inserted into the receiving cavity, the latch is fastened to the slot along the lip to prevent the lock cover from exiting the slot towards the gum side; when the pressing part is pressed and rotated, the latch is disengaged from the slot, and at the same time the ejector pushes the lock cover out of the slot.

3. The full-mouth vertical entry double-archwire orthodontic system as described in claim 1, characterized in that, The width of the first archwire hole is the same as the width of the archwire groove; when the lock cover is inserted into the accommodating cavity, the bottom surface of the first archwire hole and the bottom surface of the archwire groove are at the same horizontal level, so that the first archwire rests on the archwire groove.

4. The full-mouth vertical entry double-archwire orthodontic system as described in claim 1, characterized in that, The inner side of the pressing part is also provided with a first protrusion, and a second protrusion is formed on one side of the supporting surface of the body part; when the pressing wing is pressed and rotated to unlock, the first protrusion passes over the second protrusion and is locked onto the second protrusion, so that the pressing wing is fixed to maintain its opening angle.

5. The full-mouth vertical entry double archwire orthodontic system as described in claim 2, characterized in that, An arc-shaped guide surface is provided at the entrance position of the slot of the lock cover, and an arc-shaped mating surface is provided at the lower end of the latch of the pressing wing, so that the latch can smoothly transition into the slot when rotating.

6. The full-mouth vertical entry double-archwire orthodontic system as described in claim 2, characterized in that, The body has a U-shaped structure, with one side connected to the base plate and the other side having a side opening for the ejector and the latch to enter; the body forms a U-shaped accommodating cavity.

7. The full-mouth vertical entry double-archwire orthodontic system as described in claim 6, characterized in that, The two inner sides of the body are provided with arc-shaped groove guide surfaces at the top opening position relative to the accommodating cavity.

8. The full-mouth vertical entry double-archwire orthodontic system as described in claim 6, characterized in that, The side opening on one side of the body is a recessed structure; when the pressing wing locks the cover, the pressing wing is completely accommodated in the body in its thickness direction, and the outer surface of the pressing wing is flush with the outer surface of the body.

9. The full-mouth vertical entry double-archwire orthodontic system as described in claim 1, characterized in that, The pressing part is recessed and has a pressing hole to facilitate the insertion of the tip of an orthodontic tool.

10. The full-mouth vertical entry double-archwire orthodontic system as described in claim 1, characterized in that, The first bowwire is fixedly or slidably inserted into the first bowwire hole, and the second bowwire is fixedly inserted into the second bowwire hole.

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