Multifunctional open orthodontic system based on Nand support, extraoral arch and invisible orthodontic appliance

Abstract

The invention provides a multifunctional open orthodontic system based on a Nand support, an extraoral arch and an invisible orthodontic appliance, comprising: a Nand support supporting module which is mounted on the palate of a patient, provides stable support for the palate, and enhances supporting resistance through a multi-fulcrum design to prevent bad movement of teeth caused by orthodontic force reaction and disperse traction force in the orthodontic process, so as to improve the orthodontic effect of the patient; the unexpected movement of the teeth is avoided; the extraoral arch module is used for applying an efficient external traction force to realize maxillary molar distalization and increase a gap required by dentition adjustment; the maxillary molar is moved to an ideal position through external traction force, and an extra gap is created for dentition adjustment; an extraoral arch combined head cap module which is worn on the head of the patient and suppresses excessive development of the maxillary bone through high traction force; and the invisible orthodontic appliance module is sleeved on the teeth of the patient and is used for adjusting the dentition position and aligning the teeth.

Description

Technical Field

[0001] The present invention relates to the field of oral orthodontic technology, in particular to a comprehensive correction technology for problems such as excessive maxillary development, crowded dentition and protrusion in children and adolescents; the present invention specifically relates to a multifunctional open correction system based on a Nance support, an extraoral bow and an invisible appliance, wherein an efficient and stable comprehensive treatment effect is achieved through an organic combination of palatal support, external traction and dentition adjustment technology. Background Art

[0002] Maxillary hyperplasia is a common dental deformity, characterized by maxillary protrusion, narrow dental arch, mandibular retraction and uneven teeth. This deformity not only affects the aesthetic appearance of the face, but may also lead to functional problems, such as chewing disorders, breathing problems and occlusion disorders. The correction needs for maxillary hyperplasia are mainly concentrated in the following points:

[0003] Maxillary molar distalization: For patients with maxillary protrusion or mild crowding, molar distalization can provide more space for dentition alignment in a non-extraction treatment plan. Distalization is best performed before the eruption of the second permanent molars, but even if the second permanent molars have erupted, distalization can still be achieved with supporting devices.

[0004] Inhibit the protrusion growth of the maxillary bone: Especially during the growth and development period of children and adolescents, changing the growth pattern of the maxillary suture through external traction (such as the extraoral arch of the head cap) can effectively reduce the forward and downward development of the maxilla and improve the facial shape and function.

[0005] Enhanced support: In cases of bimaxillary protrusion or severe crowding, it is necessary to enhance support to prevent the reaction force of correction from causing mesial movement of molars, thereby ensuring the stability of the correction process.

[0006] Controlling the vertical position of molars: During the treatment of Class III malocclusion, the correction of anterior crossbite may cause the molars to elongate, thus affecting the occlusal relationship. Such problems can be avoided by controlling the vertical position of molars through high-position traction.

[0007] At present, the correction methods for maxillary hyperplasia mainly include extraoral bow, tooth extraction and anchorage nail implantation, but these traditional methods have the following shortcomings:

[0008] Extraoral bow and headgear device: Traditional extraoral bow uses molars as anchor points to correct maxillary protrusion through external traction, but the reaction force can easily cause the molars to move mesially, such as Figure 1 Although headgear can provide additional stability, its aesthetics and comfort are poor, and patient compliance is low, which affects the treatment effect.

[0009] Tooth extraction and correction: Although creating space by tooth extraction can solve the problem of crowded dentition, it may cause iatrogenic problems, such as occlusal disorder and jaw plane deviation. In addition, tooth extraction and correction may have a negative impact on the patient's facial shape and should be implemented with caution.

[0010] Support nail implantation: Although support nails can significantly improve the support force, they are highly invasive, especially for adolescent patients. Due to active bone remodeling, support nails are easy to loosen, increasing the complexity of treatment and patient discomfort.

[0011] In recent years, some brands have tried to introduce anchorage pin-assisted traction technology into invisible braces, but the following problems still exist:

[0012] 1. Insufficient correction force

[0013] Invisible braces have limited intervention effects on complex skeletal problems, and relying solely on braces to push molars distally is often ineffective.

[0014] 2. Lack of ability to intervene in bone development

[0015] Current technologies lack a direct inhibitory effect on maxillary overgrowth and are unable to meet the bone growth needs of children and adolescents.

[0016] 3. Strong technical expertise

[0017] Most invisible orthodontic technologies are tied to brands and lack cross-brand compatibility, reducing flexibility and adaptability.

[0018] In recent years, invisible braces have gradually become the mainstream choice for orthodontic treatment due to their aesthetics and comfort, especially for children and adolescents. However, existing technologies are still inadequate in dealing with complex bone problems (such as maxillary overgrowth and molar distalization), as shown in the following points.

[0019] Single mechanical effect: Most existing invisible braces rely on teeth as anchor points, lack multi-point anchor design, and are difficult to meet the multi-directional mechanical requirements in complex corrections. This leads to problems such as insufficient anchorage and unstable tooth displacement during correction.

[0020] Insufficient correction force: Since the correction force provided by invisible braces is weak, it is difficult to achieve the expected effect when achieving high mechanical requirements such as molar distalization, especially when it is necessary to move molars over long distances or change bone growth patterns.

[0021] Compatibility limitations: Existing invisible braces are often tied to specific brands and lack an open design, which limits doctors’ flexibility in equipment selection and matching and also increases patients’ treatment costs. Summary of the invention

[0022] The technical problem to be solved by the present invention is to address the above-mentioned defects in the prior art and to provide a multifunctional open correction system based on a Nance tray, an extraoral bow and an invisible braces module. Through the multifunctional collaboration of the Nance tray support module, the extraoral bow combined with the head cap module and the invisible braces module, comprehensive correction of maxillary overdevelopment and malocclusion is achieved.

[0023] According to the present invention, a multifunctional open correction system based on Nance support, extraoral bow and invisible braces is provided, comprising:

[0024] Nance support module, which is installed on the patient's palate to provide stable support for the palate. The multi-point design enhances the support force to prevent the adverse movement of teeth caused by the reaction of the correction force, disperses the traction force during the correction process, and avoids unexpected movement of teeth;

[0025] The extraoral arch module applies efficient external traction to achieve distalization of the maxillary molars and increase the space required for dentition adjustment. Through external traction, the maxillary molars are distalized to the ideal position to create additional space for dentition adjustment.

[0026] The extraoral bow is combined with a headgear module, which is worn on the patient's head and inhibits the excessive development of the maxillary bone through high-position traction;

[0027] The invisible braces module is put on the patient's teeth to adjust the position of the dentition and align the teeth.

[0028] Preferably, the Nance support module is installed on the patient's palate and includes a palatal plate device and bilateral buccal tubes, wherein the palatal plate device fits tightly to the maxillary palate, and the bilateral buccal tubes are connected to the maxillary molar buccal tubes to form a multi-point support to disperse the correction force and prevent unexpected movement of teeth.

[0029] Preferably, the bilateral buccal tubes are connected to the buccal tubes of the maxillary first molars.

[0030] Preferably, the palatal plate device is custom designed to fit the patient's anatomy.

[0031] Preferably, the extraoral bow module comprises: a buccal bow and a buccal tube connector, the buccal tube connector is connected to the teeth, and the buccal bow is used to apply traction through the buccal tube to move the maxillary molars distally, thereby allowing the extraoral bow module to directly apply traction to the maxillary molars.

[0032] Preferably, the extraoral bow module further comprises an adjustable traction component for adjusting the direction and intensity of the traction force.

[0033] Preferably, the head cap module is worn on the patient's head and includes a top cap, a pillow strap and a chin strap, wherein the top cap is connected to the pillow strap, the chin strap is connected to the pillow strap, the top cap is worn on the head, and the chin strap is formed with a connecting hole connected to the buccal arch of the extraoral arch module.

[0034] Preferably, the invisible braces module is sleeved over the bilateral buccal tubes of the Nance support module and the outside of the buccal tube connectors of the extraoral arch module.

[0035] Preferably, the ends of the bilateral buccal tubes have a band ring that is sleeved on the teeth, and an open tube is formed on the band ring. The extraoral bow module includes an outer connecting line, and the open tube is connected to the outer connecting line of the extraoral bow module to make the Nance support module and the extraoral bow module relatively fixed.

[0036] Preferably, the invisible braces module is equipped with a traction hook for connecting the extraoral bow module to the extraoral bow, so as to assist in completing the distal movement of the molars and the mechanical distribution during the correction process.

[0037] The present invention achieves comprehensive correction of maxillary overdevelopment and malocclusion through the multifunctional collaboration of the Nance support module, the extraoral bow combined with the head cap module and the invisible brace module; the system adopts an open design and is compatible with multiple brands of invisible braces, and has the advantages of strong support force, high efficiency of molar distalization, and significant bone intervention effect; in addition, its modular and aesthetic and comfortable design improves patient compliance, and is an important innovation and supplement to existing correction technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] A more complete understanding of the present invention and its attendant advantages and features will be more readily appreciated by reference to the following detailed description taken in conjunction with the accompanying drawings, in which:

[0039] Figure 1 A schematic diagram of a conventional extraoral bow and headgear arrangement is shown.

[0040] Figure 2 The figure schematically shows a multifunctional open correction system based on a Nance tray, an extraoral bow and an invisible brace according to a preferred embodiment of the present invention.

[0041] Figure 3 Schematically showing some actual photos of a multifunctional open correction system based on a Nance tray, an extraoral bow and an invisible brace according to a preferred embodiment of the present invention.

[0042] Figure 4 and Figure 5 A real photo of a Nance tray used in a multifunctional open correction system based on a Nance tray, an extraoral bow and an invisible brace according to a preferred embodiment of the present invention is shown.

[0043] Figure 6 A partial schematic diagram of a multifunctional open correction system based on a Nance tray, an extraoral bow and an invisible brace according to a preferred embodiment of the present invention is schematically shown.

[0044] It should be noted that the drawings are used to illustrate the present invention, rather than to limit the present invention. Note that the drawings showing the structures may not be drawn to scale. In addition, in the drawings, the same or similar elements are marked with the same or similar reference numerals. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] In order to solve the above problems in the prior art, it is expected that the technology development will meet the following conditions:

[0050] Multi-point mechanical design: Introduce palatal support to disperse the correction force and improve treatment stability.

[0051] Combination of palatal expansion and traction: Achieve the synergistic effect of palatal expansion and external traction, taking into account both dentition adjustment and bone growth control.

[0052] Openness and compatibility: The correction system should break the brand-exclusive restrictions and be compatible with invisible braces from multiple brands.

[0053] Comfort and aesthetics: Improve patient compliance and make the correction process efficient and acceptable.

[0054] Therefore, the present invention proposes a comprehensive correction system and method for open molar distalization based on Nance tray and invisible braces. The system comprehensively utilizes the multifunctional synergy of the palatal Nance tray, the extraoral bow combined with the head cap device and the invisible braces module, and provides an effective correction solution especially for children and adolescents.

[0055] Figure 2 The schematic diagram of a multifunctional open correction system based on Nance support, extraoral arch and invisible braces according to a preferred embodiment of the present invention is schematically shown. The present invention innovatively integrates the functions of each module into one, forming an open design that is compatible with mainstream invisible braces brands, thereby improving the flexibility of doctors and the treatment compliance of patients.

[0056] Specifically, Figure 2 As shown, the multifunctional open correction system based on Nance support, extraoral bow and invisible braces according to the preferred embodiment of the present invention includes:

[0057] The Nance support module 10 is installed on the patient's palate to provide stable support for the palate. The multi-fulcrum design enhances the support force (enhances the support effect) to prevent adverse tooth movement due to the reaction of the correction force, disperses the traction force during the correction process, and avoids unexpected tooth movement. The mechanical dispersion design of the Nance support module 10 improves the overall treatment stability and efficiency, and prevents the negative impact of support loss on the correction effect.

[0058] The extraoral arch module 20 applies efficient external traction to achieve distalization of the maxillary molars and increase the gap required for dentition adjustment; through external traction, the maxillary molars are distalized to the ideal position to create additional gaps for dentition adjustment. The external traction design enhances the efficiency of distalization of molars and avoids the problem of insufficient correction force of traditional invisible braces in distalization of molars.

[0059] The extraoral bow is combined with a head cap module 30, which is worn on the patient's head. Through high-position traction, it inhibits the excessive development of the maxilla, promotes the normal growth of the mandible, and optimizes the jaw proportion. Through high-position traction, it inhibits the forward and downward development of the maxilla, promotes the normal growth of the mandible, and improves the facial shape and jaw proportion relationship. The flexible material provides a stable head cap traction force, which works in conjunction with the extraoral bow to form a synergistic mechanical effect. The high-position traction design can directly intervene in bone growth and development, meet the correction needs of children and adolescents, and reduce the invasiveness and compliance issues of traditional treatment methods.

[0060] The invisible braces module 40 is put on the patient's teeth to accurately adjust the position of the dentition, align the teeth, and improve the occlusion relationship, while being both aesthetically pleasing and comfortable. The invisible braces module 40 is linked with the extraoral bow and Nance support to provide multi-directional correction support. The invisible braces design is compatible with mainstream brands (such as Invisalign, Angelalign, etc.) and is equipped with traction hooks to assist in traction of molars and adjustment of dentition. The invisible braces achieve both aesthetics and comfort, with high patient compliance; the open design is compatible with multiple brands of braces, enhancing the flexibility of the device.

[0061] The Nance support module 10 is installed on the patient's palate and includes a palate plate device 11 and bilateral buccal tubes 12, wherein the palate plate device 11 fits tightly to the maxillary palate, and the bilateral buccal tubes 12 are connected to the maxillary molar buccal tubes to form a multi-point support to disperse the correction force and prevent unexpected tooth movement. Preferably, the bilateral buccal tubes 12 are connected to the buccal tubes of the maxillary first molars. Preferably, the palate plate device 11 is customized to adapt to the patient's anatomical structure. For example, as shown in FIG. Figure 4 As shown in the photos.

[0062] The extraoral bow module 20 includes: a buccal bow 21 and a buccal tube connector 22, wherein the buccal tube connector 22 is connected to the teeth, and the buccal bow 21 is used to apply traction through the buccal tube to move the maxillary molars distally. The extraoral bow module 20 directly applies traction to the maxillary molars. Preferably, the extraoral bow module 20 also includes an adjustable traction component for adjusting the direction and strength of the traction force, so as to allow the doctor to adjust the direction and strength of the traction force according to the patient's needs.

[0063] The head cap module 30 is worn on the patient's head and includes a top cap 31, a pillow strap 32 and a chin strap 33, wherein the top cap 31 is connected to the pillow strap 32, the chin strap 33 is connected to the pillow strap 32, the top cap 31 is worn on the head, and a connecting hole is formed on the chin strap 33 for connecting to the buccal arch 21 of the extraoral arch module 20.

[0064] The invisible braces module 40 is mounted on the patient's teeth, and preferably the invisible braces module 40 is mounted on the outside of the bilateral buccal tubes 12 of the Nance support module 10 and the buccal tube connector 22 of the extraoral arch module 20. Preferably, the invisible braces module 40 is provided with a traction hook for connecting the extraoral arch module 20 with the extraoral arch to assist in completing the distalization of the molars and the mechanical distribution during the correction process.

[0065] Figure 3 Schematically showing some actual photos of a multifunctional open correction system based on a Nance tray, an extraoral bow and an invisible brace according to a preferred embodiment of the present invention, wherein the Nance tray, the extraoral bow and the invisible brace are shown.

[0066] Preferably, if Figure 5 and Figure 6As shown, the ends of the bilateral buccal tubes 12 fixed to the posterior teeth have a band ring that is sleeved on the teeth, and an open tube is formed on the band ring. The extraoral bow module 20 includes an outer connecting line 23. The open tube is connected to the outer connecting line 23 of the extraoral bow module 20 so that the Nance support module 10 and the extraoral bow module 20 are relatively fixed.

[0067] <Change design plan>

[0068] Under the technical framework of the present invention, in order to adapt to the needs of different patients or improve technical flexibility, the following possible design changes can be considered:

[0069] Modular design for adaptability

[0070] Deformation of the palate support module

[0071] The palatal plate design of the Nance support was replaced with a modular support structure that can be adjusted in size to accommodate the different palatal anatomical features of the patient.

[0072] The use of removable or replaceable buccal tube components makes it easier to adjust the support position according to mechanical requirements during correction.

[0073] Dynamic traction design of extraoral bow

[0074] Add an elastic traction device to optimize the efficiency of molar distalization by adjusting the elastic strength.

[0075] Design a foldable or hidden extraoral arch structure to improve the aesthetics of the device and enhance patient compliance.

[0076] Mechanical optimization of invisible braces

[0077] A more powerful additional traction hook is designed to better cooperate with the extraoral arch to complete distal movement and adjustment tasks.

[0078] We offer a variety of invisible braces in different thicknesses and materials to meet the mechanical requirements of different treatment stages.

[0079] Alternatives to anchorage devices

[0080] Improved palatal support

[0081] Implantable anchorage pins are used instead of palatal Nance support to improve the anchorage strength in severe cases.

[0082] The introduction of a support system combined with a bone plate provides more stable support through a small bracket fixed to the skull.

[0083] Combined with buccal support device

[0084] A buccal support component is introduced between the extraoral arch and the molar buccal tube to further improve the stability of the traction force by strengthening the buccal support point.

[0085] Optimization of the overall system design

[0086] Integrated correction device

[0087] Integrate the Nance support, extraoral arch and invisible braces into an integrated device to reduce the complexity of wearing and improve comfort.

[0088] The modular system is designed to enable doctors to flexibly select and combine different functional modules to meet individual treatment needs.

[0089] Improved aesthetics and comfort of the device

[0090] The use of lightweight, transparent materials for the extraoral bow and headgear components improves aesthetics and wearing comfort.

[0091] Add flexible connection parts to reduce wearing pressure points and improve patient compliance.

[0092] Improvements in jaw intervention techniques

[0093] Multi-directional mechanical design

[0094] The addition of lateral expansion function enables the palatal device to provide both anterior and posterior support and lateral expansion of the dentition.

[0095] A mechanism is designed to dynamically adjust the direction of the traction force of the head cap, so as to flexibly control the direction of jaw growth according to the patient's development.

[0096] Growth and development monitoring system

[0097] Integrate real-time monitoring devices to collect data on the patient's jaw and teeth development, helping doctors adjust treatment plans.

[0098] Use AI algorithms to analyze patient treatment data, predict treatment outcomes, and provide optimization recommendations.

[0099] <Technical Effects>

[0100] Through the collaborative work of the above modules, the present invention achieves the following technical effects:

[0101] Enhanced support and anchorage: Nance supports provide multiple points of anchorage in the palate, disperse the traction force, and significantly improve the stability and efficiency during treatment. It solves the problem of insufficient anchorage of traditional invisible braces.

[0102] Molar distalization and space creation: The external traction force applied by the extraoral bow can achieve effective distalization of the maxillary molars (up to 5mm or more), creating the necessary space for dentition adjustment.

[0103] Intervention of jaw development: The high-position traction force of the head cap combined with the extraoral arch can effectively inhibit the excessive growth of the maxilla, while promoting the development of the mandible, improving the jaw proportions, and optimizing the patient's facial shape.

[0104] Precise adjustment of dentition: Invisible braces achieve precise alignment of dentition, optimize occlusion, and improve the overall effect of correction.

[0105] Treatment comfort and compliance: The invisible braces are designed to ensure aesthetic comfort and high patient compliance. The open design is compatible with multiple brands of devices, reducing patient treatment costs and increasing the flexibility of doctors' treatment options.

[0106] In summary, the technical advantages of the present invention compared with the prior art are shown in the following table:

[0107]

[0108]

[0109] In addition, it should be noted that, unless otherwise specified, the terms "first", "second", "third", etc. in the specification are only used to distinguish the various components, elements, steps, etc. in the specification, and are not used to indicate the logical relationship or sequential relationship between the various components, elements, steps, etc.

[0110] It is to be understood that, although the present invention has been disclosed as a preferred embodiment, the above embodiment is not intended to limit the present invention. For any person skilled in the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A multifunctional open correction system based on Nance support, extraoral bow and invisible braces, characterized in that include: Nance support module, which is installed on the patient's palate to provide stable support for the palate. The multi-point design enhances the support force to prevent the adverse movement of teeth caused by the reaction of the correction force, disperses the traction force during the correction process, and avoids unexpected movement of teeth; The extraoral arch module applies efficient external traction to achieve distalization of the maxillary molars and increase the space required for dentition adjustment. Through external traction, the maxillary molars are distalized to the ideal position to create additional space for dentition adjustment. The extraoral bow is combined with a headgear module, which is worn on the patient's head and inhibits the excessive development of the maxillary bone through high-position traction; The invisible braces module is put on the patient's teeth to adjust the position of the dentition and align the teeth.

2. The multifunctional open correction system based on Nance support, extraoral bow and invisible braces according to claim 1, characterized in that: The Nance support module is installed on the patient's palate and includes a palatal plate device and bilateral buccal tubes. The palatal plate device fits tightly to the maxillary palate, and the bilateral buccal tubes are connected to the maxillary molar buccal tubes to form a multi-point support to disperse the correction force and prevent unexpected tooth movement.

3. The multifunctional open correction system based on Nance support, extraoral bow and invisible braces according to claim 2 is characterized in that: The buccal tubes on both sides connect to the buccal tubes of the maxillary first molars.

4. The multifunctional open correction system based on Nance support, extraoral bow and invisible braces according to claim 2, characterized in that: The palatal plate appliance is custom designed to fit the patient's anatomy.

5. The multifunctional open correction system based on Nance support, extraoral bow and invisible braces according to claim 1 or 2, characterized in that: The extraoral bow module includes: a buccal bow and a buccal tube connector, the buccal tube connector is connected to the teeth, and the buccal bow is used to apply traction through the buccal tube to move the maxillary molars distally, thereby allowing the extraoral bow module to directly apply traction to the maxillary molars.

6. The multifunctional open correction system based on Nance support, extraoral bow and invisible braces according to claim 5, characterized in that: The extraoral bow module also includes an adjustable traction component for adjusting the direction and intensity of the traction force.

7. The multifunctional open correction system based on Nance support, extraoral bow and invisible braces according to claim 1 or 2, characterized in that: The head cap module is worn on the patient's head and includes a top cap, a pillow strap and a chin strap, wherein the top cap is connected to the pillow strap, the chin strap is connected to the pillow strap, the top cap is worn on the head, and the chin strap is formed with a connecting hole connected to the buccal arch of the extraoral arch module.

8. The multifunctional open correction system based on Nance support, extraoral bow and invisible braces according to claim 1 or 2, characterized in that: The invisible braces module is sleeved on the bilateral buccal tubes of the Nance support module and the outside of the buccal tube connector of the extraoral arch module.

9. The multifunctional open correction system based on Nance support, extraoral bow and invisible braces according to claim 1 or 2, characterized in that: The ends of the bilateral buccal tubes have bands that are sleeved on the teeth, and an open tube is formed on the band. The extraoral bow module includes an outer connecting line, and the open tube is connected to the outer connecting line of the extraoral bow module to make the Nance support module and the extraoral bow module relatively fixed.

10. The multifunctional open correction system based on Nance support, extraoral bow and invisible appliance according to claim 1 or 2, characterized in that: The invisible braces module is equipped with a traction hook for connecting the extraoral bow module to the extraoral bow, so as to assist in completing the distal movement of the molars and the mechanical distribution during the correction process.

Images