A mandibular anteriductor

Abstract

The utility model relates to a kind of mandibular front guide appliance, comprising: maxillary band loop bracket group, the maxillary band loop bracket group is adaptively set in maxillary dentition;Mandibular band loop bracket group, the mandibular band loop bracket group is adaptively set in mandibular dentition;Maxillary base, the maxillary base covers the occlusal surface of maxillary dentition by the maxillary band loop bracket group set, and the maxillary base with the maxillary band loop bracket group between is detachably connected;Mandibular base, the mandibular base covers the occlusal surface of mandibular dentition by the mandibular band loop bracket group set, and the mandibular base with the mandibular band loop bracket group between is detachably connected;Wherein, in occlusion state, the maxillary base with the mandibular base mutually contact and cooperate, to guide mandibular forward.The base of the utility model is detachably connected between band loop bracket group, and it is flexible to adjust, treatment, high in comfort, good in compliance, can be used twice, save cost.

Description

Technical Field

[0001] This utility model relates to the field of oral medicine technology, specifically to a mandibular pre-guided orthodontic appliance. Background Technology

[0002] Mandibular retrusion is a common jaw deformity in childhood and adolescence, which can easily lead to facial abnormalities, masticatory dysfunction, and sleep apnea. Its causes include genetic factors and childhood habits such as mouth breathing and thumb sucking. For patients in the growth and development stage, mandibular protrusion appliances (such as Twin-block, Activator, and Herbst appliances) are often used clinically for functional correction, stimulating growth by protruding and stabilizing the mandible.

[0003] However, existing mandibular pre-orthodontic appliances generally have the following drawbacks:

[0004] 1. Poor comfort and low patient compliance: Traditional orthodontic appliances are mostly monolithic designs that cover the entire dentition. They are bulky, have a strong foreign body sensation, and seriously affect the patient's pronunciation, chewing function and wearing comfort, resulting in poor patient compliance (especially children), which directly affects the treatment effect.

[0005] 2. Fixed structure and inability to be gradually adjusted: The orthodontic appliance is designed as a single unit, and its lead distance is fixed at the beginning of the manufacturing process. It cannot be adjusted according to the patient's response during treatment. If the initial lead distance is too large, it can easily lead to joint discomfort and difficulty in wearing. If adjustment is required, the entire device must be remade, which is a complicated and costly process.

[0006] 3. Single function and cannot be reused: This type of orthodontic appliance is a stage treatment tool. After it has completed its stage mission of mandibular prognathism, it is removed and discarded. It has no value for reuse. If patients need to carry out subsequent fine orthodontic treatment, they must have new brackets made and bonded to their teeth, which increases the overall treatment time and cost.

[0007] Therefore, there is an urgent need in this field for a mandibular prefrontal appliance that can combine patient comfort, treatment adjustability, and functional continuity. Utility Model Content

[0008] In view of the technical problems existing in the prior art, the purpose of this utility model is to provide a mandibular pre-guided orthodontic appliance to solve the technical problems of poor comfort, non-adjustability and non-reusability of the existing orthodontic appliances.

[0009] This invention utilizes a modular design, deconstructing the orthodontic appliance into two independent modules: a "base" and a "band bracket assembly," which are connected in a detachable manner. This fundamentally overturns the inherent structure of traditional one-piece orthodontic appliances. This design achieves a complete separation of physical structure and functional attributes: the detachable base serves as a functional component, supporting precise replacement and progressive adjustment during treatment according to clinical needs; while the band bracket assembly serves as a basic anchoring platform, and after the mandibular pre-orthodontic task is completed, it can continue to be used as brackets for lingual fixation, realizing the reuse of the device and thus effectively saving manufacturing costs and shortening the overall treatment cycle.

[0010] Meanwhile, the base and bracket set of this orthodontic appliance only cover a partial segment of the dentition. Compared with the traditional full dentition coverage design, this greatly reduces the volume of the appliance in the oral cavity, significantly reduces the feeling of a foreign body, thereby improving the patient's wearing comfort and treatment compliance, and providing an important guarantee for achieving the therapeutic effect.

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

[0012] A mandibular prefrontal appliance, comprising:

[0013] A maxillary band bracket assembly, wherein the maxillary band bracket assembly is adapted to fit the maxillary dentition;

[0014] Mandibular band bracket assembly, wherein the mandibular band bracket assembly is adapted to fit the mandibular dentition;

[0015] The maxillary base covers the occlusal surface of the maxillary dentition, which is fitted by the maxillary band bracket assembly, and the maxillary base and the maxillary band bracket assembly are detachably connected.

[0016] The mandibular base covers the occlusal surface of the mandibular dentition fitted by the mandibular band bracket assembly, and the mandibular base and the mandibular band bracket assembly are detachably connected.

[0017] In the occlusal state, the maxillary baseplate and the mandibular baseplate contact and cooperate with each other to guide the mandible forward.

[0018] As a preferred embodiment, the maxillary band bracket set is fitted onto a dental arch segment consisting of one or more maxillary teeth, and includes one or more maxillary band brackets corresponding to the number of teeth in the dental arch segment.

[0019] As a preferred embodiment, the mandibular band bracket set is fitted onto a dentition segment consisting of one or more mandibular teeth, and includes one or more mandibular band brackets corresponding to the number of teeth in the dentition segment.

[0020] As a preferred embodiment, the maxillary band bracket includes a maxillary band and a maxillary bracket, wherein the maxillary band is fitted onto the corresponding tooth in the maxillary dentition segment, and the maxillary bracket is fixedly connected to the lingual outer wall of the maxillary band.

[0021] The mandibular band bracket includes a mandibular band and a mandibular bracket. The mandibular band is fitted onto the corresponding tooth in the mandibular dentition segment, and the mandibular bracket is fixedly connected to the lingual outer wall of the mandibular band.

[0022] As a preferred embodiment, the maxillary base includes:

[0023] A maxillary pad that covers the occlusal surface of the maxillary dentition segment;

[0024] A retention arm, one end of which is fixed to the maxillary pad, and the other end of which extends distally to the maxillary dentition segment and is fixed to the terminal tooth.

[0025] The movable pin arm has one end fixed to the upper jaw pad and the other end bent to form a flexible locking arm.

[0026] The upper jaw bracket has an insertion hole, and the locking arm is detachably inserted into the insertion hole.

[0027] As a preferred embodiment, the mandibular base includes:

[0028] A mandibular pad that covers the occlusal surface of the mandibular dentition segment;

[0029] A retention arm, one end of which is fixed to the mandibular pad, and the other end of which extends distally to the mandibular dentition segment and is fixed to the terminal tooth;

[0030] The movable latch arm has one end fixed to the chin pad and the other end bent to form a flexible locking arm.

[0031] The chin support has an insertion hole, and the locking arm is detachably inserted into the insertion hole.

[0032] As a preferred embodiment, the bottom surface of the maxillary pad is provided with an arc-shaped surface that matches the occlusal surface of the maxillary dentition segment; the bottom surface of the mandibular pad is provided with an arc-shaped surface that matches the occlusal surface of the mandibular dentition segment.

[0033] As a preferred embodiment, the front end of the maxillary pad is provided with a maxillary guide surface, and the rear end of the mandibular pad is provided with a mandibular guide surface. Both the maxillary guide surface and the mandibular guide surface are smooth inclined surfaces and contact each other during occlusion.

[0034] As a preferred embodiment, the angle between the maxillary guide surface and the occlusal surface of the maxillary dentition segment is 30° to 80°, and the angle between the mandibular guide surface and the occlusal surface of the mandibular dentition segment is 30° to 80°.

[0035] As a preferred embodiment, the maxillary dentition is provided with the maxillary band bracket assembly and the matching maxillary base on both the left and right sides; the mandibular dentition is provided with the mandibular band bracket assembly and the matching mandibular base on both the left and right sides.

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] 1. High comfort and good compliance: By designing the base to cover only a partial segment of the dentition and using a movable connection, the volume of the appliance in the oral cavity is greatly reduced, the foreign body sensation is lessened, and the patient's wearing comfort and treatment compliance are significantly improved.

[0038] II. Adjustable and Flexible Treatment: The baseplate and the band bracket assembly are detachably connected. During treatment, doctors can design and replace the maxillary or mandibular baseplates with different lead-ahead amounts according to the patient's orthodontic progress, achieving progressive and personalized precision treatment without having to replace the entire orthodontic device.

[0039] Third, it can be reused and saves costs: The band bracket itself is the basic component of the fixed orthodontic appliance. After the mandibular pre-treatment stage is completed, the base can be removed and the band bracket can be retained for subsequent lingual fixed orthodontic treatment. This makes the device functionally continuous, avoids repeated manufacturing and bonding, effectively shortens the total treatment course, and reduces the overall treatment cost for patients. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the usage state of this utility model.

[0041] Figure 2 This is a schematic diagram of the structure of the mandibular band bracket assembly of this utility model used in conjunction with the mandibular base.

[0042] Figure 3 This is a schematic diagram of the mandibular band support groove of this utility model.

[0043] Figure 4 This is a schematic diagram of the mandibular base of this utility model.

[0044] Wherein: 1 is the maxillary dentition, 2 is the mandibular dentition, 3 is the maxillary band bracket group, 4 is the mandibular band bracket group, 41 is the mandibular band bracket, 411 is the mandibular band, 412 is the mandibular bracket, 413 is the insertion hole, 5 is the maxillary base, 6 is the mandibular base, 61 is the mandibular pad, 611 is the mandibular guide surface, 612 is the arc-shaped surface, 62 is the retention arm, 63 is the movable pin arm, and 631 is the locking arm. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0046] like Figures 1 to 4 As shown, a mandibular pre-orthodontic appliance includes a maxillary band bracket assembly 3, a mandibular band bracket assembly 4, a maxillary base 5, and a mandibular base 6. The maxillary band bracket assembly 3 is fitted onto the maxillary dentition 1, and the mandibular band bracket assembly 4 is fitted onto the mandibular dentition 2. The maxillary base 5 covers the occlusal surface of the maxillary dentition 1 fitted by the maxillary band bracket assembly 3, and the maxillary base 5 and the maxillary band bracket assembly 3 are detachably connected. The mandibular base 6 covers the occlusal surface of the mandibular dentition 2 fitted by the mandibular band bracket assembly 4, and the mandibular base 6 and the mandibular band bracket assembly 4 are detachably connected. In occlusal mode, the maxillary base 5 and the mandibular base 6 contact and cooperate with each other to guide the mandible forward.

[0047] By clearly dividing the orthodontic appliance into two main modules, namely the "band bracket set" and the "base", and combining them with "detachable connection", the traditional one-piece structure of orthodontic appliances has been fundamentally changed, realizing the separation of physical structure and function. The detachable base allows for precise replacement and progressive adjustment during treatment, while the fixed band bracket set can be directly reused after fulfilling its function of mandibular prognathism, seamlessly converting it into a lingual orthodontic base, thus realizing the entire process from jawbone orthodontics to orthodontic treatment.

[0048] like Figure 1 As shown, specifically, the maxillary band bracket set 3 is set on a dental arch segment consisting of one or more maxillary teeth, and includes one or more maxillary band brackets corresponding to the number of teeth in the dental arch segment.

[0049] In this embodiment, the maxillary band bracket group 3 is fitted onto the dental arch segment formed by the fifth and sixth maxillary teeth. That is, the maxillary band bracket group 3 includes two maxillary band brackets, which are respectively fitted onto the fifth maxillary tooth (second premolar) and the sixth maxillary tooth (first molar).

[0050] like Figure 1 As shown, specifically, the mandibular band bracket set 4 is fitted onto a dental arch segment consisting of one or more mandibular teeth, and includes one or more mandibular band brackets 41 corresponding to the number of teeth in the dental arch segment.

[0051] In this embodiment, the mandibular band bracket group 4 is fitted onto the dental arch segment formed by the fourth and fifth mandibular teeth. That is, the mandibular band bracket group 4 includes two mandibular band brackets 41, which are respectively fitted onto the fourth mandibular tooth (first premolar) and the fifth mandibular tooth (second premolar).

[0052] By targeting specific segments of the dentition consisting of posterior teeth with a banded bracket system, key and synergistic technical effects were achieved:

[0053] The selection of the maxillary second premolar, first molar, and mandibular first premolar, second premolar as anchoring units is based on biomechanical optimization considerations. These teeth (especially the first molar) have robust roots and good skeletal support, providing strong and stable anchorage for the mandibular premolars. This effectively resists the reaction force generated by orthodontic forces, prevents abnormal movement of the anchored teeth, and ensures that the orthodontic force is efficiently applied to the jawbone.

[0054] Compared to traditional designs that cover the entire dentition, this approach precisely positions the anchoring and force-applying structures on four key teeth, achieving ultimate localization and miniaturization of the appliance. This design minimizes the appliance's volume and coverage within the oral cavity, significantly reducing the feeling of a foreign body and minimizing its impact on tongue movement, speech, and swallowing function, thereby fundamentally improving patient comfort and treatment adherence.

[0055] The selected tooth positions not only allow space for the free movement of the mandible during the pre-orthodontic process, but more importantly, these concealed posterior brackets can effectively serve as stable posterior anchorage units when converted to lingual orthodontics. This provides a reliable mechanical basis for subsequent fine adjustments such as anterior tooth alignment and gap closing, ensuring a smooth transition and therapeutic effect from jawbone orthodontics to orthodontic treatment.

[0056] like Figure 2 and Figure 3 As shown, specifically, the maxillary band bracket includes a maxillary band and a maxillary bracket. The maxillary band is fitted onto the corresponding tooth in the maxillary dentition segment, and the maxillary bracket is fixedly connected to the lingual outer wall of the maxillary band. The mandibular band bracket 41 includes a mandibular band 411 and a mandibular bracket 412. The mandibular band 411 is fitted onto the corresponding tooth in the mandibular dentition segment, and the mandibular bracket 412 is fixedly connected to the lingual outer wall of the mandibular band 411.

[0057] By fixing the bracket to the lingual outer wall of the band, the "band bracket" becomes an independent, prefabricated functional unit. After the mandibular pre-treatment stage, the base is removed, and this unit can be used directly as a bracket for a lingual orthodontic appliance, achieving a seamless transition from jawbone orthodontics to dentistry and hardware reuse. The band is pre-positioned and precisely connected to the bracket, avoiding the errors of directly bonding brackets intraorally in clinical practice. This pre-built structure ensures the absolute accuracy and long-term stability of the bracket position, providing a guarantee for applying precise orthodontic forces. Placing the bracket on the lingual side allows the forces from the base and the archwire forces of subsequent lingual orthodontic treatment to be transmitted more directly close to the impedance center of the teeth, which is beneficial for achieving efficient and controllable tooth movement and jawbone orthodontics.

[0058] like Figure 2 and Figure 4 As shown, specifically, the maxillary base 5 includes a maxillary pad, a retention arm, and a movable locking arm. The maxillary pad covers the occlusal surface of the maxillary dentition segment. One end of the retention arm is fixed to the maxillary pad, and the other end extends to the distal end of the maxillary dentition segment and is fixed to the terminal tooth. One end of the movable locking arm is fixed to the maxillary pad, and the other end is bent to form a flexible locking arm. An insertion hole is provided on the maxillary bracket, and the locking arm is detachably inserted into the insertion hole.

[0059] In this embodiment, the maxillary pad covers the occlusal surface of the maxillary dentition segment (i.e., the fifth and sixth teeth), one end of the retention arm is fixed to the maxillary pad, and the other end extends distally and is fixed to the sixth tooth at the end of the segment; one end of the movable pin arm is fixed to the maxillary pad, and the other end bends distally to form an elastic locking arm.

[0060] The locking arm is detachably inserted into the corresponding slot's insertion hole. Its locking and unlocking mechanism is as follows: In the absence of external force, the locking arm opens outward by its own elasticity, applying a continuous radial preload to the inner wall of the insertion hole, thereby forming a stable locking state; during disassembly, by applying a pinching force to the locking arm, it generates a radially inward elastic displacement, and the preload is released, allowing the movable pin arm to be easily removed from the slot.

[0061] In this embodiment, two retention arms are preferably provided, which wrap around the terminal tooth from the buccal and lingual sides of the crown, respectively, to provide reliable anti-rotational stability; the locking arm of the movable pin arm is inserted into the bracket insertion hole of the fifth and sixth maxillary teeth.

[0062] like Figure 2 and Figure 4 As shown, specifically, the mandibular base 6 includes a mandibular pad 61, a retention arm 62, and a movable pin arm 63. The mandibular pad 61 covers the occlusal surface of the mandibular dentition segment. One end of the retention arm 62 is fixed to the mandibular pad 61, and the other end extends to the distal end of the mandibular dentition segment and is fixed to the terminal tooth. One end of the movable pin arm 63 is fixed to the mandibular pad 61, and the other end is bent to form a flexible locking arm 631. The mandibular bracket 412 has an insertion hole 413, and the locking arm 631 is detachably inserted into the insertion hole 413.

[0063] In this embodiment, the mandibular pad 61 covers the occlusal surface of the mandibular dentition segment (i.e., the fourth and fifth teeth), one end of the retention arm 62 is fixed to the mandibular pad 61, and the other end extends mesially and is fixed to the fourth tooth at the end of the segment; one end of the movable pin arm 63 is fixed to the mandibular pad 61, and the other end is bent mesially to form an elastic locking arm 631.

[0064] The locking arm 631 is detachably inserted into the corresponding slot's insertion hole 413. Its locking and unlocking mechanism is as follows: In the absence of external force, the locking arm 631 opens outward by its own elasticity, applying a continuous radial preload to the inner wall of the insertion hole 413, thereby forming a stable locking state; during disassembly, by applying a pinching force to the locking arm 631, it generates a radially inward elastic displacement, and the preload is released, so that the movable pin arm 63 can be smoothly removed from the slot.

[0065] In this embodiment, two retention arms 62 are preferably provided, which wrap around the terminal tooth from the buccal and lingual sides of the crown, respectively, to provide reliable anti-rotational stability; the locking arm 631 of the movable pin arm 63 is inserted into the bracket insertion hole 413 of the fourth and fifth mandibular teeth.

[0066] Through meticulous structural design of the upper and lower jaw bases, a synergistic technical effect was achieved:

[0067] Traditional orthodontic appliances cover the entire dentition or most of the palate, resulting in a bulky structure, a strong foreign body sensation, and severe interference with pronunciation and chewing. This is a major reason for low patient compliance, especially in children. This design changes this approach, drastically reducing the coverage of the maxillary and mandibular pads to only cover specific segments of the dentition consisting of two posterior teeth in each jaw. This significantly reduces the volume of the appliance in the oral cavity, freeing up tongue movement space, significantly reducing the foreign body sensation, and minimizing the impact on the patient's pronunciation and swallowing functions. This fundamentally improves patient comfort, enabling long-term, efficient appliance use.

[0068] The engagement of the movable pin arm and the bracket insertion hole forms a stable and repeatable snap-on connection mechanism. The design of the elastic locking arm and radial preload ensures the stability of the baseplate connection while worn, effectively bearing chewing and biting forces and preventing accidental loosening. This connection mechanism makes baseplate removal and installation quick, easy, and non-destructive, facilitating baseplate replacement as treatment progresses.

[0069] The baseplate, covered by chin pads, wrapped by retention arms, and locked by pin arms, forms a triple retention system combining surface-line-point with the ring bracket assembly. The chin pads provide large-area support and distribute stress; the bilateral retention arms effectively resist rotation and tilting of the baseplate; and the pin arms provide final rigid locking. This system works together to ensure extremely high stability of the appliance within the mouth, thereby guaranteeing that the mandibular pre-orthodontic force can be continuously and accurately transmitted to the jawbone, avoiding a decline in treatment efficacy due to appliance loosening.

[0070] like Figure 2 and Figure 4As shown, specifically, the bottom surface of the maxillary pad has an arc-shaped surface that matches the occlusal surface of the maxillary dentition segment; the bottom surface of the mandibular pad 61 has an arc-shaped surface 612 that matches the occlusal surface of the mandibular dentition segment.

[0071] The curved surface closely matches the anatomical shape of the occlusal surface of the teeth, creating a tight fit between surfaces. This significantly increases the contact area and friction between the denture base and the teeth, effectively resisting displacement and rotation of the denture base under oblique or horizontal orthodontic forces, ensuring the constant and precise direction of the orthodontic force. Compared to a flat denture base, the personalized curved surface evenly distributes the pressure generated during occlusion and treatment across the entire occlusal surface of the covered teeth. This avoids point-like stress concentrations that may occur in traditional designs, effectively preventing tooth sensitivity, dull pain, or periodontal tissue damage caused by stress concentration. Simultaneously, it provides stable support during chewing and biting, further enhancing wearing comfort.

[0072] like Figure 1 and Figure 2 As shown, specifically, the front end of the maxillary pad is provided with a maxillary guide surface, and the rear end of the mandibular pad 61 is provided with a mandibular guide surface 611. Both the maxillary guide surface and the mandibular guide surface 611 are smooth inclined surfaces and they contact and cooperate with each other during occlusion.

[0073] The smooth, inclined surfaces contact and slide against each other during occlusion, effectively converting the vertical occlusal force into a horizontal component that guides the mandible forward. This mechanism continuously and gently stimulates the mandibular condyle and glenoid fossa to undergo adaptive growth and remodeling, providing a direct and efficient biomechanical basis for mandibular protrusion and correction of mandibular retrusion deformities. The smooth, inclined guide surface design significantly reduces frictional resistance during occlusion, making mandibular protrusion smoother and more natural, conforming to physiological movement trajectories, thereby improving wearing comfort and reducing potential muscle and joint discomfort.

[0074] like Figure 1 As shown, specifically, the angle between the maxillary guide surface and the occlusal surface of the maxillary dentition segment is 30° to 80°, and the angle between the mandibular guide surface 611 and the occlusal surface of the mandibular dentition segment is 30° to 80°.

[0075] This angle range provides doctors with room to adjust treatment parameters. Doctors can select the most suitable guide angle within this range based on the severity of the patient's deformity, age, joint response, and treatment stage (e.g., a gentler 50° in the initial stage, and a steeper 65° in the later stage), to achieve truly personalized and progressive treatment.

[0076] In this embodiment, a guide angle of 50° is preferably set. This angle provides clear and effective guidance while being easily adapted to by the patient. During treatment, the doctor can use this angle as a basis to make fine adjustments at both ends of the range according to individual responses, in order to achieve the most precise treatment control.

[0077] Preferably, the left and right sides of the maxillary dentition 1 are provided with a maxillary band bracket group 3 and a matching maxillary base 5; the left and right sides of the mandibular dentition 2 are provided with a mandibular band bracket group 4 and a matching mandibular base 6.

[0078] By symmetrically placing identical structures on both sides of the upper and lower jaws, a balanced biomechanical system is constructed. This design ensures that the corrective forces on both sides of the mandible are balanced in magnitude and symmetrical in direction during forward guidance, effectively preventing secondary problems such as mandibular midline deviation and uneven joint stress, thus guaranteeing the correctness and safety of the treatment direction. The guide surfaces on both sides simultaneously contact the opposing jaw during occlusion, forming a dual guiding mechanism that enhances the reliability of the forward guiding effect. Through bilateral coordinated force application, the distribution of corrective forces is more in line with physiological conditions, thereby significantly improving the efficiency and stability of mandibular orthodontic treatment.

[0079] The process of using this mandibular prefrontal orthodontic appliance includes the following steps:

[0080] Data acquisition and personalized design: A digital dental model of the patient is obtained through intraoral 3D scanning, and a personalized bracket set and base are designed accordingly.

[0081] Device manufacturing: Components are manufactured using digital processes such as 3D printing.

[0082] Wearing a band bracket set: The upper and lower jaw band bracket sets are bonded and fixed to the pre-set anchor teeth.

[0083] Install the baseplate: Lock the maxillary and mandibular baseplates into the corresponding bracket holes using their movable pin arms.

[0084] Treatment adjustments: During treatment, progressive adjustments are achieved by removing and replacing baseplates with different lead parameters.

[0085] Functional conversion: After the jawbone orthodontic stage is completed, the base is removed, and the band bracket set is retained as an accessory for lingual orthodontic treatment.

[0086] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A mandibular prefrontal brace, characterized in that, include: A maxillary band bracket assembly, wherein the maxillary band bracket assembly is adapted to fit the maxillary dentition; Mandibular band bracket assembly, wherein the mandibular band bracket assembly is adapted to fit the mandibular dentition; The maxillary base covers the occlusal surface of the maxillary dentition, which is fitted by the maxillary band bracket assembly, and the maxillary base and the maxillary band bracket assembly are detachably connected. The mandibular base covers the occlusal surface of the mandibular dentition fitted by the mandibular band bracket assembly, and the mandibular base and the mandibular band bracket assembly are detachably connected. In the occlusal state, the maxillary baseplate and the mandibular baseplate contact and cooperate with each other to guide the mandible forward.

2. The mandibular pre-orthodontic appliance according to claim 1, characterized in that, The maxillary band bracket set is fitted onto a dental arch segment consisting of one or more maxillary teeth, and includes one or more maxillary band brackets corresponding to the number of teeth in the dental arch segment.

3. The mandibular pre-orthodontic appliance according to claim 2, characterized in that, The mandibular band bracket set is fitted onto a dental arch segment consisting of one or more mandibular teeth, and includes one or more mandibular band brackets corresponding to the number of teeth in the dental arch segment.

4. The mandibular pre-orthodontic appliance according to claim 3, characterized in that, The maxillary band bracket includes a maxillary band and a maxillary bracket. The maxillary band is fitted onto the corresponding tooth in the maxillary dentition segment, and the maxillary bracket is fixedly connected to the lingual outer wall of the maxillary band. The mandibular band bracket includes a mandibular band and a mandibular bracket. The mandibular band is fitted onto the corresponding tooth in the mandibular dentition segment, and the mandibular bracket is fixedly connected to the lingual outer wall of the mandibular band.

5. The mandibular pre-orthodontic appliance according to claim 4, characterized in that, The maxillary base includes: A maxillary pad that covers the occlusal surface of the maxillary dentition segment; A retention arm, one end of which is fixed to the maxillary pad, and the other end of which extends distally to the maxillary dentition segment and is fixed to the terminal tooth. The movable pin arm has one end fixed to the upper jaw pad and the other end bent to form a flexible locking arm. The upper jaw bracket has an insertion hole, and the locking arm is detachably inserted into the insertion hole.

6. The mandibular pre-orthodontic appliance according to claim 5, characterized in that, The mandibular base includes: A mandibular pad that covers the occlusal surface of the mandibular dentition segment; A retention arm, one end of which is fixed to the mandibular pad, and the other end of which extends distally to the mandibular dentition segment and is fixed to the terminal tooth; The movable latch arm has one end fixed to the chin pad and the other end bent to form a flexible locking arm. The chin support has an insertion hole, and the locking arm is detachably inserted into the insertion hole.

7. The mandibular pre-orthodontic appliance according to claim 6, characterized in that, The bottom surface of the maxillary pad is provided with an arc-shaped surface that matches the occlusal surface of the maxillary dentition segment; the bottom surface of the mandibular pad is provided with an arc-shaped surface that matches the occlusal surface of the mandibular dentition segment.

8. The mandibular pre-orthodontic appliance according to claim 6, characterized in that, The front end of the maxillary pad is provided with a maxillary guide surface, and the rear end of the mandibular pad is provided with a mandibular guide surface. Both the maxillary guide surface and the mandibular guide surface are smooth inclined surfaces and contact each other during occlusion.

9. The mandibular pre-orthodontic appliance according to claim 8, characterized in that, The angle between the maxillary guide surface and the occlusal surface of the maxillary dentition segment is 30° to 80°, and the angle between the mandibular guide surface and the occlusal surface of the mandibular dentition segment is 30° to 80°.

10. The mandibular pre-orthodontic appliance according to claim 1, characterized in that, The maxillary dentition is provided with the maxillary band bracket set and the matching maxillary base on both the left and right sides; the mandibular dentition is provided with the mandibular band bracket set and the matching mandibular base on both the left and right sides.

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