CN216167946U

CN216167946U - Hard plate-closing invisible appliance and correcting system thereof

Info

Publication number: CN216167946U
Application number: CN202122313380.2U
Authority: CN
Inventors: 刘倩; 郭涛
Original assignee: Individual
Current assignee: Air Force Medical University of PLA
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-05
Anticipated expiration: 2031-09-23

Abstract

The application discloses ware is rescued in stealthy of stereoplasm plywood formula and correction system thereof, wherein the ware is rescued in the stealthy of plywood formula includes: the invisible orthodontic diaphragm is covered on the surface of the tooth and is used for applying orthodontic force to the tooth; the occlusion pad is of an integral structure with the invisible correcting diaphragm and is arranged on the occlusion surface of the invisible correcting diaphragm, and the occlusion pad is made of a hard material; the invisible orthodontic diaphragm comprises two molar areas positioned on two sides and an incisor area positioned in the middle, and the occlusion pad is at least provided with two molar areas corresponding to the molar areas respectively. The utility model discloses a technical scheme uses through the cooperation that the diaphragm was rescued to interlock pad and stealthy to realized the removal of patient's tooth in the plywood treatment, the pertinence has greatly reduced the time of rescuring to the key interlock disorder factor that causes the joint problem, promotes medical personnel's operation impression, improves patient's treatment experience and treatment, alleviates patient's facial muscle pain.

Description

Hard plate-closing invisible appliance and correcting system thereof

Technical Field

The application relates to the field of dental correction, in particular to a hard plate-combined invisible appliance and a correction system thereof.

Background

As orthodontic technology has further improved, more and more patients choose to achieve good tooth alignment, bite adjustment, and facial morphology change through correction; and more adult patients are joining the correction army. However, orthodontists in the clinic find that many patients experience temporomandibular joint and even maxillofacial pain prior to, or during, correction. Such as joint bounce, pain, difficulty in opening the mouth, and even oromaxillofacial pain. After examination, patients are found to have the joint disc displacement of the temporal mandibular joint, erosive change of bone tissues on the surface of the condyle, position change, severe abrasion of teeth and the like, and the patients are seriously required to relieve and treat joint problems before or during orthodontics.

The treatment mode commonly adopted at present is to put the patient on the shelf and then carry out plywood treatment. The time is usually about 6-24 months. In combination with recent reports, full dentition bite plates can be classified into rigid ones, soft ones and fluidic ones according to the material. The hard occlusal plate is made of polypropylene material, and the occlusal surface is not deformable, which is also the most commonly used one. There is no clear concept for "soft bite plates", but most studies have referred to "soft" or "elastic" bite plates, which are made of transparent film-pressed material and have a thickness of 1mm to 2 mm. Different types of occlusal plates are compared in the aspects of treating bruxism, Temporomandibular Disorders (TMD), oromandibular facial muscle pain and the like, wherein most results show that the hard occlusal plate has definite effect in treating bruxism and other oral muscle tension problems and can effectively reduce abnormal myoelectric activities of masticatory muscles.

The inventors have discovered that whatever the material of the bite plate, the patient's teeth are not aligned during the period of the plate treatment, which significantly increases the time for correction; and for most patients with posterior occlusal high points, pressing down individual cusp as soon as possible is helpful for rapidly solving joint problems, but a simple jaw pad only can play a role in separating occlusal joints and cannot simultaneously solve the problem of critical teeth, thereby causing troubles to patients and medical staff.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application discloses ware is rescued in stealthy of stereoplasm plywood formula includes:

the invisible orthodontic diaphragm is covered on the surface of the tooth and is used for applying orthodontic force to the tooth;

the occlusion pad and the invisible correcting diaphragm are of an integral structure and are arranged on the occlusion surface of the invisible correcting diaphragm;

the invisible orthodontic diaphragm comprises two molar areas positioned on two sides and an incisor area positioned in the middle, and the occlusion pad is at least provided with two molar areas corresponding to the molar areas respectively.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the entire bite pad has uniform mechanical properties.

Optionally, the bite pads are uniformly thick and have a thickness in the range of 2-6 mm.

Optionally, the occlusion pads are independently arranged and respectively correspond to the teeth grinding areas, and each occlusion pad extends from the occlusal surface to the side surface of the invisible orthodontic membrane.

Optionally, the width of the bite pad is matched with the width of the invisible orthodontic membrane.

Alternatively, the width of the bite pad is uniformly arranged or continuously varies in the extending direction thereof.

Optionally, the cross section of the occlusion pad is U-shaped, the invisible correction diaphragm is arranged in the opening of the U-shape and is fixedly connected with the bottom of the U-shape, and two ends of the U-shaped opening are attached to the side surfaces of the invisible correction diaphragm.

Optionally, the invisible orthodontic membrane and the bite pad are formed separately and fixedly connected.

Optionally, the invisible orthodontic membrane and the occlusal pad are fixedly connected in one or more of bonding, clamping and fusion.

The application also discloses ware is rescued in stealthy of fluid closes board-like, includes:

the occlusion pad and the invisible correcting diaphragm are of an integral structure and are arranged on the occlusion surface of the invisible correcting diaphragm, the surface of the occlusion pad facing the invisible correcting diaphragm is a connecting surface, the surface of the occlusion pad facing away from the invisible correcting diaphragm is an adaptive surface, and the adaptive surface can adjust the shape of the occlusion pad in response to the change of occlusion force;

Optionally, the bite pad comprises:

the adaptive shell is connected with the invisible correcting diaphragm and can deform under the action of occlusion force;

a fluid interlayer filled within the compliant shell and responsive to the bite force.

Optionally, the fluid interlayer is filled with physiological saline or water, and the fluid interlayer is closed by itself or by the adaptive shell.

Optionally, the width of the accommodating shell is matched with the width of the invisible orthodontic membrane.

Optionally, the width of the adaptive housing is uniformly arranged or continuously changes in the extending direction of the adaptive housing.

Optionally, the adaptation shell is of a double-layer structure, and at least one layer of the adaptation shell is fixedly connected with the invisible orthodontic diaphragm.

Optionally, the adaptation shell is of a single-layer structure, and is covered on the invisible orthodontic diaphragm to form a space for accommodating the fluid interlayer.

Optionally, the occlusion pad further comprises a communication pipeline passing around the incisor area, and the fluid interlayers between the occlusion pads are communicated with each other through the communication pipeline.

Optionally, each bite pad is further provided with a connecting portion, and the connecting portion extends from a buccal side surface of the molar region of the invisible orthodontic patch to a buccal side surface of the molar region on the other side of the invisible orthodontic patch after passing around a labial side surface of the incisor region of the invisible orthodontic patch.

Optionally, the connecting portion is a long strip-shaped structure, and the width of the connecting portion is less than or equal to the width of the invisible orthodontic membrane.

Optionally, a communication pipeline is arranged in the connecting portion, and the fluid interlayers between the occlusion pads are communicated with each other through the communication pipeline.

The application also discloses system is rescued in plywood formula stealthy, include:

the upper jaw invisible orthodontic diaphragm and the lower jaw invisible orthodontic diaphragm which are arranged in groups cover the upper jaw tooth surface and the lower jaw tooth surface respectively and exert orthodontic force on the teeth respectively;

the occlusion pad is arranged on the occlusal surface of the upper jaw invisible correcting diaphragm and/or the lower jaw invisible correcting diaphragm and is of an integral structure, and the occlusion pad is made of a hard material;

each stealthy diaphragm of correcting is all including two molar zones that are located both sides and the incisor district that is located the middle part, the bite-block is equipped with two at least and corresponds the molar zone on the stealthy diaphragm of correcting in place respectively.

According to the technical scheme, the occlusion pad and the invisible correcting diaphragm are matched for use, so that the teeth of a patient can move (such as simple alignment, arch expansion and the like) while the plywood is treated, the correcting time is greatly shortened, the operation feeling of medical workers is improved, the treatment experience and the treatment effect of the patient are improved, and the facial muscle pain of the patient is relieved;

secondly, the downward movement of the occlusal high point, which causes the joint problem, performs earlier intervention, which is beneficial to more quickly relieving and treating the joint problem caused by occlusion.

Specific advantageous technical effects will be further explained in conjunction with specific structures or steps in the detailed description.

Drawings

FIG. 1 is a schematic view of an invisible orthodontic patch;

FIG. 2 is a schematic view of a hard plate invisible appliance in one embodiment;

FIG. 3 is a cross-sectional view of the bite pad of FIG. 2;

FIG. 4 is a schematic view of another embodiment of a fluid plate-closing invisible appliance;

FIG. 5 is a schematic view of a communication circuit according to an embodiment;

FIG. 6 is a cross-sectional view of the bite pad of FIG. 4;

FIG. 7 is a schematic view of a fit relationship of a plywood type invisible orthodontic system in an embodiment;

FIG. 8 is a schematic view of the fitting relationship of a plywood invisible orthodontic system in another embodiment.

The reference numerals in the figures are illustrated as follows:

1. invisible correcting films; 11. grinding the teeth; 12. a tooth cutting area;

2. an occlusion pad; 21. a connecting surface; 22. adapting to the surface; 23. adapting the housing; 24. a fluid interlayer; 25. a communicating pipeline; 26. a connecting portion.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, the present application discloses a hard alloy plate type invisible appliance, comprising:

the invisible orthodontic diaphragm 1 is covered on the surface of the tooth and is used for applying orthodontic force to the tooth;

the occlusion pad 2 is of an integral structure with the invisible correcting diaphragm 1 and is arranged on the occlusion surface of the invisible correcting diaphragm 1, and the occlusion pad 2 is made of a hard material;

the invisible orthodontic diaphragm 1 comprises two molar areas 11 positioned on two sides and an incisor area 12 positioned in the middle, and the occlusion pad 2 is at least provided with two molar areas 11 corresponding to the occlusion pad.

The stealthy diaphragm 1 of correcting who indicates in this application specifically indicates can realize that the tooth arranges the stealthy ware of correcting. According to the specific technical scheme, the occlusion pad 2 and the invisible correcting diaphragm 1 are matched for use, so that the teeth of a patient can move (such as simple alignment, arch expansion and the like) while the plywood is treated, the correcting time is greatly shortened, the operation feeling of medical workers is improved, and the treatment experience and the treatment effect of the patient are improved; secondly, the downward movement of the occlusal high point, which causes the joint problem, performs earlier intervention, which is beneficial to more quickly relieving and treating the joint problem caused by occlusion. In an application scene, the technical scheme in the application is suitable for patients without obvious maxillofacial pain and joint problems, mainly without pain.

In this embodiment, bite pad 2 is a hard material. The solid plywood is definitely researched in the aspect of the effect of opening and occluding due to the benefit of the solid plywood. The retention mode is mostly in the form of snap ring or composite transparent pressed film holding material. In the embodiment, the occlusal pad 2 is formed by compounding a hard material on the occlusal surface of the lower jaw or the upper jaw of the invisible orthodontic diaphragm 1. The doctor can adjust and grind the bite pad 2 according to the wearing condition of the patient. Thereby realizing the synchronous proceeding of tooth arrangement and plywood treatment. The bite pad 2 has a thickness of 2-6mm in a particular dimension. The thickness of bite pad 2 can be adjusted to 3-5 mm in a specific product. The thickness of the bite pad 2 depends on the patient's resting clearance, and is typically 2-4mm, with the actual adjustment being within the range of the resting clearance. Compare in prior art 1mm to 2 mm's interlock pad, great initial thickness can realize great height in the opening of interlock vertical distance in this application, has avoided can only satisfy among the prior art that the normal laminating of back tooth covers normal patient's application scene defect.

It is noted that the invisible orthodontic patch 1 of the present application is different from the prior art anatomical biteplates with anatomical surface. The surface of the dissecting type occlusal plate in the prior art has dissecting shape and forms an occlusion relation of cusp locking with involutive natural teeth. The invisible orthodontic diaphragm 1 in the application can realize the movement of the teeth of the patient while realizing the positioning effect. After the patient brings the invisible appliance into the application, the correction of the tooth position can be realized while the abnormal condition between the muscle position and the tooth position is removed, and a proper functional occlusion relation is provided for the patient.

The occlusion pads 2 are independently arranged and respectively correspond to the tooth grinding areas, and each occlusion pad 2 extends to the side face of the invisible correcting diaphragm 1 from the combined face. The occlusion pad 2 integrally wraps the invisible orthodontic diaphragm 1 to a certain degree, so that the fixing effect is improved. In principle, the width of the bite pad 2 matches the width of the invisible orthodontic patch 1. In a specific product, the width of the occlusion pad 2 is close to that of the invisible orthodontic diaphragm 1, so that foreign body sensation is prevented from being generated in the oral cavity of a patient. In one embodiment, the bite pad 2 is uniformly wide. In another embodiment, bite pad 2 varies continuously in its direction of extension. In the latter embodiment, bite pads 2 can be provided that are wider at one end than the width of the invisible orthodontic patch 1 and narrower at the other end than the width of the invisible orthodontic patch 1 to provide a more comfortable orthodontic feel.

In the matching details of the two, the section of the occlusion pad 2 is U-shaped, the invisible correcting diaphragm 1 is arranged in the opening of the U-shaped and is fixedly connected with the bottom of the U-shaped, and two ends of the U-shaped opening are attached to the side surface of the invisible correcting diaphragm 1. In the connection form, the invisible orthodontic diaphragm 1 and the occlusal pad 2 are formed separately and fixedly connected. The invisible orthodontic membrane 1 and the occlusion pad 2 are fixedly connected in one or more of bonding, clamping and fusion. The specific welding method may include high temperature welding, ultrasonic welding, reinforcing welding with intermediate material, etc.

In addition to the rigid bite pad 2 arrangement, reference may also be made to the embodiments shown in fig. 4 to 6, which disclose a fluidic plate-type invisible appliance, comprising:

the occlusion pad 2 and the invisible correcting diaphragm 1 are of an integral structure and are arranged on the occlusion surface of the invisible correcting diaphragm 1, the surface, facing the invisible correcting diaphragm 1, of the occlusion pad 2 is a connecting surface 21, the surface, facing away from the invisible correcting diaphragm 1, of the occlusion pad 2 is an adaptive surface 22, and the adaptive surface 22 can adjust the shape of the occlusion pad in response to the change of occlusion force;

The connecting surface 21 is used for realizing the connection between the occlusal pad 2 and the invisible orthodontic diaphragm 1, and the adapting surface 22 can improve the occlusal feeling of the occlusal pad 2. The invisible orthodontic diaphragm 1 can be subjected to the reaction force of teeth while the teeth are arranged, so that the restraint is realized. Connect face 21 and realize both positions that can restraint interlock pad 2 through stealthy piece 1 of correcting when connecting to promote interlock pad 2's maintenance effect, avoid among the prior art soft elastic plywood's maintenance effect not good, interlock skew risk. Multiple clinical trials have demonstrated that fluid occlusive pads are similar to rigid occlusive pads in terms of efficacy, but are more comfortable in treating facial muscle tone and pain, and in treating TMD.

In particular, a rigid bite pad is advantageous for therapeutic efficiency, and a fluid bite pad is advantageous for overall relief of bite stress distribution and comfort.

In the aspect of occlusion stress distribution, according to the orthodontic RW theory and research results of other researchers, teeth and joints present a situation of 'enemy strength and weakness', namely, the tooth strength is easy to increase the risk of TMD, and the joint strength causes severe abrasion, cryptofissure and periodontal injury of the teeth. Therefore, for the hard occlusion pad, the medical staff needs to adjust and grind the occlusion pad, which is generally carried out once every 2-4 weeks, so that the occlusion stress is gradually equalized.

In comfort, the fluid occlusive pad has less impact on the life and work of the patient in addition to the physiological sensation of the patient. The fluid bite pad can reduce the impact of the treatment process, for example, when the patient needs to maintain accurate pronunciation capabilities during work and life (e.g., teacher, announcer, pilot, etc.).

In addition to a conventional bite pad 2 made of an elastic material, a fluid type bite pad 2 may be used. Referring to the embodiment shown in fig. 5-6, bite pad 2 includes:

the adaptive shell 23 is connected with the invisible orthodontic diaphragm 1 and can deform under the action of occlusion force;

a fluid interlayer 24 filled within the compliant shell 23 and responsive to the bite force.

Bite pads 2 having a fluid interlayer 24 are classified as fluid laminae and can be used to treat joint disorders, facial, neck and shoulder muscle tension or pain. The biomechanics principle is based on fluid dynamics, a flexible fluid layer is arranged on the occlusal layer of the plywood, and the occlusal force of the posterior teeth is balanced by separating the contact between the upper teeth and the lower teeth. The plywood is a unique liquid system, and the lower jaw can spontaneously find the position of the lower jaw relative to the balance after being brought into the plywood, so that the occlusion and the muscles of the body are relaxed and the positions are harmonious. It has been shown that fluid plates are a new application of the basic physical law known as pascal's law, which states that a closed fluid will exert an equalized fluid pressure, regardless of where such pressure is applied to the fluid. When the patient's dentition exerts occlusal force on the bite pad 2, the liquid with fluidity therein distributes the occlusal force evenly on the occlusal surface, reducing muscle pain and temporomandibular joint pressure.

In a specific implementation, the fluid layer 24 can be enclosed by the adaptive housing 23 as shown in the drawings, or a separate design can be adopted to realize the enclosure of the fluid layer 24 itself. In principle, the width of the accommodating shell 23 is matched to the width of the invisible orthodontic diaphragm 1. In one embodiment, the width of the accommodating case 23 is uniformly set. In another embodiment, the adaptive housing 23 varies continuously in its direction of extension. In the latter embodiment, the accommodating shell 23 can be provided with one end wider than the width of the invisible orthodontic patch 1 and the other end narrower than the width of the invisible orthodontic patch 1, thereby providing a more comfortable orthodontic feel. The conforming shell 23 effectively constrains the morphology of the fluid interlayer and thus determines the size of bite pad 2.

In a specific structure, the adaptive shell 23 can be set to be a double-layer structure, and at least one layer is fixedly connected with the invisible orthodontic diaphragm 1. The interior of the accommodating case 23 forms a space for accommodating the fluid jacket 24. In another embodiment, the adaptive shell 23 is a single layer structure, and the cover is disposed on the invisible orthodontic diaphragm 1 to form a space for accommodating the fluid interlayer 24.

In selecting the fluid, a plurality of fluids satisfying the use condition, such as gas and liquid, can be selected. Specifically, the fluid layer 24 is filled with physiological saline or water. The inventors have also found that it is easy to squeeze out the internal liquid for individual patients with excessive biting force or severe bruxism, in order to ensure the safety of the human body after the bite pad 2 is broken, which may occur later. The fluid compartment 24 may be filled with a taste alerting composition to alert the patient to the operating condition of the fluid compartment 24. Such as bittering agents and the like.

In the case of multiple bite pads 2, each bite pad 2 may be independently disposed, and in the embodiment shown in fig. 5, each bite pad 2 further includes a communication conduit 25 passing around the incisor area 12, and the fluid layers 24 between the bite pads 2 are communicated with each other through the communication conduit 25.

The communication pipeline 25 can improve the adaptability of each occlusion pad 2, and the independent occlusion pads 2 form a mutually feedback whole body, thereby improving the treatment effect.

Structurally, each occlusal pad 2 is further provided with a connecting portion 26, and the connecting portion 26 extends from the buccal side surface of the molar region 11 of the invisible orthodontic diaphragm 1 to the buccal side surface of the molar region 11 on the other side of the invisible orthodontic diaphragm 1 after passing around the labial side surface of the incisor region 12 of the invisible orthodontic diaphragm 1. The connecting portion 26 can further improve the retention effect of the bite pad 2, and reduce unnecessary displacement. From the size of the drawing, the connecting portion 26 is a long strip-shaped structure and has a width less than or equal to the width of the invisible orthodontic diaphragm 1. This arrangement can reduce the feeling of foreign matter caused by the provision of the connecting portion 26.

Meanwhile, the connection portion 26 and the communication pipe 25 can be fitted to each other. That is, the connecting portion 26 is provided with a communication pipe 25, and the fluid interlayers 24 between the bite pads 2 are communicated with each other through the communication pipe 25.

In the present application, the mechanical properties of the entire bite pad 2 are uniformly set regardless of whether it is a hard bite pad or a fluid bite pad. In particular, it should be understood that the mechanical properties of the bite pad 2 are consistent or close throughout. For example, in an embodiment, the bite pad 2 is made of a hard material, and the entire bite pad 2 is made of a hard material and can bear the biting force applied by the biting surface in terms of mechanical properties; for another example, in an embodiment, the engaging pad 2 is an elastic structure, and the engaging pad 2 is an elastic structure as a whole, so that the engaging force on the engaging surface can be adaptively adjusted to improve the comfort level.

Based on above-mentioned setting, it is not difficult to understand, this application still discloses ware is rescued in stealthy of plywood formula, include:

the occlusion pad 2 is integrated with the invisible correcting diaphragm 1 and is arranged on the occlusion surface of the invisible correcting diaphragm 1;

The occlusion pad 2 and the invisible correcting diaphragm 1 are matched for use, so that the teeth of a patient can move while the plywood is used for treatment, the correcting time is greatly shortened, the operation feeling of medical workers is improved, and the treatment experience and treatment effect of the patient are improved; secondly, the downward movement of the occlusal high point, which causes the joint problem, performs earlier intervention, which is beneficial to more quickly relieving and treating the joint problem caused by occlusion. In an application scene, the technical scheme in the application is suitable for patients without obvious maxillofacial pain and joint problems, mainly without pain.

On the same hand, this application still discloses the stealthy system of correcting of plywood formula, include:

the upper jaw invisible orthodontic film 1 and the lower jaw invisible orthodontic film 1 which are arranged in groups cover the surfaces of upper jaw teeth and lower jaw teeth respectively and exert orthodontic force on the teeth respectively;

the occlusion pad 2 is arranged on the occlusal surface of the upper jaw invisible correcting diaphragm 1 and/or the lower jaw invisible correcting diaphragm 1 and is of an integral structure;

each stealthy diaphragm 1 of correcting is all including two molar zone 11 that are located both sides and the incisor area 12 that is located the middle part, and bite block 2 is equipped with two at least and corresponds the molar zone 11 on the stealthy diaphragm 1 of correcting of place respectively.

According to different settings of the occlusion pad 2, the system can be divided into a hard plate type invisible correcting system and a fluid plate type invisible correcting system.

Referring to fig. 7 and 8, in different treatment scenarios, the treatment effect can be adjusted by setting different layers of the bite pad 2.

Overall, the system is rescued in stealthy of plywood formula can be through the stealthy diaphragm 1 of rescuring of upper jaw and the stealthy diaphragm 1 of rescuring of lower jaw realize lining up patient's dentition, reduces and improves the joint problem through interlock pad 2 when shortening treatment time, has greatly reduced the tooth and has moved the risk that aggravates to the joint problem.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims

1. Ware is rescued in stealthy of stereoplasm plate formula, its characterized in that includes:

the occlusion pad is of an integral structure with the invisible correcting diaphragm and is arranged on the occlusion surface of the invisible correcting diaphragm, and the occlusion pad is made of a hard material;

2. The hard alloy plate type invisible appliance according to claim 1, wherein the whole bite pad has uniform mechanical properties.

3. The hard alloy plate type invisible appliance of claim 1, wherein the bite pads are uniformly thick and have a thickness in the range of 2-6 mm.

4. The hard plate-closing type invisible orthodontic appliance of claim 1, wherein the bite pads are independently arranged and respectively correspond to the molar zones, and each bite pad extends from the bite surface to the side surface of the invisible orthodontic membrane.

5. The hard board invisible appliance of claim 4, wherein the width of the bite pad matches the width of the invisible appliance membrane.

6. The hard alloy plate type invisible appliance of claim 5, wherein the width of the occlusal pad is uniformly arranged or continuously changes in the self-extending direction.

7. The hard plate-closing type invisible orthodontic device of claim 5, wherein the cross section of the occlusal pad is U-shaped, the invisible orthodontic membrane is arranged in the opening of the U-shaped and is fixedly connected with the bottom of the U-shaped, and two ends of the U-shaped opening are attached to the side surfaces of the invisible orthodontic membrane.

8. The hard plywood type invisible appliance according to claim 5, wherein the invisible appliance membrane and the occlusal pad are formed separately and fixedly connected.

9. The hard plate-combining type invisible orthodontic device of claim 8, wherein the invisible orthodontic membrane and the occlusal pad are fixedly connected in one or more of bonding, clamping and fusion.

10. Stealthy system of correcting of plywood formula, its characterized in that includes: