CN209884371U

CN209884371U - Invisible appliance

Info

Publication number: CN209884371U
Application number: CN201821873853.6U
Authority: CN
Inventors: 窦宁
Original assignee: American Biotechnology (shanghai) Co Ltd
Current assignee: American Biotechnology (shanghai) Co Ltd
Priority date: 2018-11-14
Filing date: 2018-11-14
Publication date: 2020-01-03
Anticipated expiration: 2028-11-14

Abstract

The utility model discloses a ware is rescued in stealthy, the utility model discloses an acquire patient's malocclusion CBCT data, tooth jaw model data, carry out scheme design and remove the substep simulation in software, confirm the type that single tooth removed, the distribution of anchorage tooth, the local condition that produces the distortion carries out local or strengthens the design relatively to correcting to through compound hot briquetting, techniques such as 3D 4D prints, local spraying, the part is got rid of, increases additional mechanism, local additional strengthening is made to means such as annex. The utility model discloses a ware is rescued in local strenghthened type is stealthy can promote stealthy the control of rescuring the ware to special tooth moving means and anchorage control, promotes and rescues ware anti fracture, anti crack ability, effectively promotes the efficiency of stealthy rescue, extends the application scope of stealthy rescue, shortens the cycle of rescuring of stealthy rescue.

Description

Invisible appliance

Technical Field

The utility model relates to a field is rescued to the tooth deformity, concretely relates to ware is rescued in stealthy of local strenghthened type.

Background

In recent years, with the improvement of quality of life, people pay more and more attention to the beauty of teeth, and the orthodontic treatment technology is gradually accepted by people. The traditional orthodontic treatment adopts a fixed appliance which is formed by matching a nickel-titanium alloy arch wire and a metal bracket, and the appliance can well achieve the treatment effect but is not beautiful and comfortable. People hope that the appliance can not only correct teeth well, but also has good aesthetic effect, the bracket-free invisible appliance can be produced at the same time, and the phenomenon of iron teeth and steel teeth is avoided well.

The bracket-free invisible appliance is firstly introduced by American AlignTech company in 1998, is introduced into the domestic market by domestic capital medical university and Beijing times Angel company, and is popularized and used in China from 2006. Compared with the fixed appliance formed by matching the traditional nickel-titanium alloy arch wire with the metal bracket, the invisible appliance without the bracket is safer and more comfortable, and the oral tissue cannot be lacerated by the fixed bracket. Meanwhile, the bracket-free invisible appliance cannot influence the attractiveness of the oral cavity after being worn by a patient, and the patient can take the belt by himself, so that the wearing is convenient, the operation time beside a chair is short, and frequent re-diagnosis is not needed, so that the invisible appliance is popular among more and more patients and orthodontists.

The existing bracket-free invisible appliance manufacturing method comprises the steps of firstly obtaining a patient tooth jaw data model, aligning teeth in software to obtain a target model, generating a plurality of step-by-step appliance data models through software simulation, obtaining each solid target model in different stages in the appliance process through a three-dimensional printing or rapid forming technology, finally pressing an orthodontic diaphragm into the invisible appliance through the solid target model by a vacuum hot-pressing method, and delivering the invisible appliance to a patient for use after cutting and polishing.

In practice, the following problems exist with the conventional manufacturing method of the bracket-free invisible appliance:

1. because the moving modes of adjacent teeth are different, the components of the single-step movement in the three-dimensional direction are different, and different orthodontic control forces are required for the moving modes of different teeth; the existing bracket-free invisible appliance has the defects in the aspect of realizing personalized correction control force; in addition, due to insufficient control on the moving mode of the teeth, the fitting degree of the appliance is easy to reduce, the appliance cannot be worn in, or the appliance is worn in forcibly, so that the problem of local fracture is caused;

2. the existing film pressing technology and film material have uneven material thickness after film pressing, which easily causes the problem of poor or insufficient force application;

3. the problem of insufficient anchorage can also be caused by the large thickness deviation of the appliance.

SUMMERY OF THE UTILITY MODEL

The utility model provides a ware is rescued in stealthy of local strenghthened type can solve among the prior art stealthy ware application of force not good, have thickness deviation and a series of defects that lead to from this.

The technical scheme of the utility model as follows:

the utility model provides a ware is rescued in stealthy, be equipped with and be used for promoting the ware is rescued in stealthy control and/or anchorage control and/or promotion of specific tooth moving means the additional strengthening or the relative additional strengthening of anti ability of cracking of ware is rescued in stealthy, additional strengthening integrated into one piece in ware is rescued in stealthy or laminate in the part of ware is rescued in stealthy.

In one embodiment, the reinforcement structure is co-designed during the design process of the invisible appliance and is simultaneously formed and integrally formed during the manufacturing process, and the reinforcement structure is made of the same material as the rest of the invisible appliance.

In another embodiment, the invisible appliance and the reinforcing structure are integrally made using 3D printing technology.

In a preferred embodiment, before 3D printing the invisible appliance and the reinforcing structure, the structure of the invisible appliance to be 3D printed is digitally optimized as follows: the method comprises the steps of analyzing an orthodontic scheme and moving steps according to malocclusion data and dental model data of a patient, determining the moving mode of a single tooth, selecting an anchorage tooth position, determining teeth needing to be reinforced and the moving mode of the teeth according to clinical experience, and determining a local area needing to be reinforced of the invisible orthodontic appliance and a reinforcing structure needed by the local area by combining analysis of the thickness distribution condition and the anti-cracking capacity of the invisible orthodontic appliance.

In another embodiment, the reinforcing structure is arranged on the body of the invisible appliance after the body of the invisible appliance is manufactured and designed and manufactured according to the structural defects of the body of the invisible appliance and the analysis of the tooth condition of the patient.

Preferably, the 3D printing of the invisible appliance and the reinforcing structure is realized by adjusting the thickness of the local structure of the appliance model in software, or by adding local materials after the 3D printing of the model is completed.

In one embodiment, the reinforcing structure is a change in local thickness relative to the original invisible appliance product. In particular, the change in thickness may be an increase or decrease in thickness.

In a preferred embodiment, the reinforcing structure for anchorage control is a structure formed by one of the following methods: thickening of the anchorage region, increasing the elasticity of the non-anchorage region, using a material with a higher elastic modulus than other parts in the anchorage region, using a material with a higher rigidity than other parts in the anchorage region, or adding an additional mechanism or an accessory in the anchorage region.

The manufacturing method of the invisible orthodontic appliance can comprise the following steps:

(1) digitally designing an invisible appliance with a reinforcing structure locally, or digitally designing a reinforcing structure which can be connected to the local part of an invisible appliance body based on the existing invisible appliance body;

(2) the invisible appliance with the local reinforcing structure is directly manufactured in an integrated mode, or the manufactured reinforcing structure is arranged on the local part of the existing invisible appliance body, wherein the reinforcing structure is the local reinforcing structure or the relative reinforcing structure arranged on the invisible appliance.

Preferably, in step (1), the design of the local reinforcing structure includes: according to the malocclusion CBCT (Cone beam computed tomography) data and the dental model data of a patient, the moving mode of a single tooth and the position of an anchorage tooth are determined through the analysis of an orthodontic scheme and moving steps, the tooth and the moving mode which need to be reinforced and controlled are determined according to clinical experience, and meanwhile, the local area of the invisible appliance which needs to be reinforced and the reinforcing structure needed by the local area are determined by combining the analysis of the thickness distribution condition and the anti-cracking capacity of the invisible appliance.

Preferably, in the case that a reinforcing structure is manufactured in a local part of an existing invisible appliance body, the reinforcing structure is formed by changing the height or the thickness or adding an additional mechanism or an additional part, the shape of the added additional mechanism or the additional part is matched with the shape of the invisible appliance body, and after the reinforcing structure is manufactured, the reinforcing structure is integrally combined to the local part of the invisible appliance body.

Preferably, the method for determining the local area of the invisible appliance to be reinforced comprises the following steps: for a dental body, if the shape and position of the dental body in the jaw are difficult to control in clinic or during production process, or local stress concentration on the structure of the appliance is easy to cause, or the thickness distribution of the appliance is easy to cause, the dental body is within the selection range of the local area to be reinforced.

In particular, the misjaw malformation CBCT data and the dental model data may be obtained according to any method already existing in the field, for example, the dental model data are obtained by aligning teeth in software.

Specifically, the moving mode of the teeth is determined through the correction scheme and step-by-step analysis, the positions of the anchorage teeth are selected, the moving mode of the teeth needing to be reinforced and controlled is determined according to clinical experience, and the local reinforcing area and/or the anchorage reinforcing area of the invisible appliance are determined and the local reinforcing structure and/or the anchorage reinforcing structure are designed by combining the thickness distribution characteristics of the invisible appliance which is theoretically or produced by the existing process. More specifically, the method for moving the single tooth, the position of the anchorage tooth and the condition of local distortion are determined through the overall analysis of the treatment scheme and the analysis of the moving path of the single tooth; in addition, for the analysis of the thickness distribution of the invisible appliance, the method for obtaining the thickness distribution condition of the existing appliance aiming at the existing appliance can be a squeeze film test.

The local reinforcing structure and/or the anchorage reinforcing structure can be manufactured by means of composite hot press molding, 3D/4D printing and the like, and the local reinforced invisible appliance with the local reinforcing structure and/or the anchorage reinforcing structure can be manufactured by means of composite hot press molding, 3D/4D printing and the like.

In a preferred embodiment, the method of determining the local reinforcement area is: according to the clinical experience, the production process, the theory or the conclusion obtained after the three aspects of the thickness distribution of the formed invisible appliance are analyzed after the detection of the product of the invisible appliance are determined, for example:

if the thickness distribution of the invisible appliance body tends to decrease from the incisal end of the tooth to the gingival side of the tooth, it is obvious that for the area where torque control of the tooth is required, the invisible appliance body is not strong enough in the area of the gingival side, and therefore reinforcement of the local area is required;

as another example, the ease of tooth movement is judged based on clinical experience: problems such as the twisting of the cuspid, the distal movement of the molars, etc., require a material with a high modulus of elasticity to wrap the crown area to provide the corrective force; for another example, in torque control, the thickness distribution of the appliance at the incisal end and the gingival side needs to be as uniform as possible;

generally, the shape and position of a tooth in the jaw, which may be difficult to control, cause local stress concentration in the appliance, or cause thickness maldistribution of the appliance, are within the selection of local reinforcement regions in the clinic or during manufacturing.

In a preferred embodiment, the process for manufacturing the local reinforcing structure comprises one or more of the following: the region is strengthened in multiple modes such as changing the height of a base region of the region to be strengthened, adopting a region variable-thickness membrane, or carrying out strengthening treatment on the region to be strengthened in a mode of locally coating the same type of bonding curing agent provided by a membrane manufacturer.

It should be understood that local reinforcement is a relative reinforcement, and is not limited to thickening relative to other parts, and sometimes it is necessary to perform non-differentiation processing between areas, for example: for torque control of teeth, it is desirable that the buccal incisors and the lingual gingiva provide equal and opposite corrective forces, and thus may be achieved in a variety of forms, either by adding material or by reducing material.

Compared with the appliance process without the reinforcing structure, the processing process of the local reinforcing structure is used for manufacturing the local reinforcing structure by designing the factors of the change of the film pressing parameters, the change of the temperature, the pressure and the cooling time, the placement position of the model, the thickness distribution change of the adopted membrane material and the like, for example, the membrane material with the changed regional thickness can be adopted to realize the differentiation of the regional thickness.

In a preferred embodiment, the determination of the anchorage tooth in the utility model is obtained by analyzing on the basis of the design of the correction scheme, determining the anchorage tooth and the non-anchorage tooth in the correction scheme and simultaneously combining the tooth body information data, the process test and the performance test result of the corrector; for example, the selection may be based on a treatment plan, taking into account the surface area of the root, the thickness distribution of the appliance, and the release of the particular corrective force of the appliance.

In a preferred embodiment, the design principle of the anchorage reinforcement structure of the present invention is: the teeth which do not need to move are controlled to be kept still or the possibility of moving the teeth which do not need to move is reduced as much as possible by changing the local or integral orthodontic structure in the orthodontic process of the teeth.

The anchorage reinforcement structure is not necessarily thickened relative to other parts, and may be realized in various ways such as increasing the elasticity of the non-anchorage region, using a material with a large elastic modulus in the anchorage region, increasing the rigidity, or adding an auxiliary control accessory.

In particular, the differences in anchorage reinforcement structure design for different teeth are based on: the morphological structure of the tooth body itself and the positional relationship of the adjacent teeth, for example: the teeth are divided into a plurality of teeth, double teeth and single teeth, the shapes of the dental crowns comprise incisor flat shapes, cuspid cone shapes and the like, and the anchorage reinforcement structures are also different for different tooth root conditions of the teeth and different shapes of the dental crowns.

In one embodiment, whether the anchorage effect of an anchorage tooth is sufficient is determined by combining the surface area of the root of the reference anchorage with the surface area of the root of a non-anchorage tooth.

In one embodiment, the determining of the strengthened region includes: the difficulty degree of tooth movement is judged based on clinical experience, and for the torsion of cuspid and the far and middle movement of molars, a material with a large elastic modulus is required to wrap a crown region to provide correction force, so that a reinforcing region needs to be designed.

In one embodiment, the determining of the strengthened region includes: the thickness distribution of the appliances of the prior art tends to decrease from the incisal ends of the teeth to the gingival side of the teeth, in which case the appliances are not strong enough in the gingival side of the teeth for the area where the torque control of the teeth is required and need to be locally reinforced.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a ware is rescued in local strenghthened type stealthy can promote stealthy the ware is rescued to the control and the anchorage control of special tooth moving means, promotes and rescues ware anti fracture, anti crack ability, effectively promotes the efficiency of stealthy rescue.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

The present invention will be described in detail by referring to the following drawings. The present invention is illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements; all the figures are schematic and only generally show the parts necessary for illustrating the invention; for simplicity and clarity of illustration, elements shown in the figures discussed below are not necessarily drawn to scale; well-known structures and devices are shown in simplified form in order to avoid unnecessarily obscuring the present invention; other parts may be omitted or merely indirectly indicate:

fig. 1 is a schematic view of a method for manufacturing an invisible orthosis according to an embodiment of the present invention;

fig. 2 is a schematic view of an invisible orthosis body according to a first embodiment of the present invention;

fig. 3 is a schematic view of a local reinforcement structure according to a first embodiment of the present invention;

fig. 4 is a schematic view of the invisible orthosis body and the local reinforcing structure according to the first embodiment of the present invention;

fig. 5 is a schematic diagram of a local anchorage structure according to a second embodiment of the present invention;

fig. 6 is a schematic view of the invisible orthosis body and the local anchorage structure according to the second embodiment of the present invention;

fig. 7 is a schematic view of a local reinforcing structure for canine torsion according to a third embodiment of the present invention;

fig. 8 is a schematic view of the combination of the invisible appliance body and the local reinforcing structure for canine torsion according to the third embodiment of the present invention.

Detailed Description

The utility model discloses a ware is rescued in stealthy of local strenghthened type, the utility model discloses an acquire patient's wrong jaw deformity CBCT data, tooth jaw model data, carry out scheme design and removal substep simulation in software, confirm the type that single tooth removed, prop up the distribution of anti tooth, the local condition that produces the distortion, carry out local relative enhancement design to the rescue to through measures such as compound hot briquetting, 3D printing technique, local spraying, local removal, local additional strengthening is local relative additional strengthening, and with the ware body combination of rescuring local relative strenghthened type of integral type and rescure the ware. The utility model discloses a ware is rescued in local strenghthened type stealthy and preparation method thereof can promote stealthy the ware is rescued to the control and anchorage control of special tooth moving means, promotes the anti fracture of ware, anti crack ability of rescuring, effectively promotes the efficiency of stealthy rescue, extends the application scope of stealthy rescue, shortens the rescue cycle of stealthy rescue.

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It is apparent, however, to one skilled in the art that the invention may be practiced without these specific details or with an equivalent arrangement.

Numerical ranges disclosed herein, unless otherwise indicated, are continuous and include both the minimum and maximum values of the range as well as each value therebetween. Further, where multiple ranges are provided to describe a feature or characteristic, the ranges may be combined.

Examples

Referring to fig. 1, an exemplary partially reinforced invisible appliance and a method for manufacturing the same are provided, and the invisible appliance and the method for manufacturing the same mainly include the following steps:

1. obtaining original dental data by taking a model of the clinical dental jaw, and obtaining dental data of malocclusion CBCT (Cone beam computed tomogry) of a patient. The specific method of this step can be, obtain the patient's primitive dental jaw data with intraoral three-dimensional scanner; or obtaining an dentognathic gypsum prototype of the patient in advance, and scanning the dentognathic gypsum prototype by using a laser or a three-dimensional scanner to obtain the dentognathic gypsum prototype; or CT scans of specific cases to obtain jaw and tooth (including root) data of the patient. Scanning to obtain STL format files, wherein CT and CBCT are dicm format files;

2. and (4) model digitization processing, namely digitization processing of original dental data. Constructing a three-dimensional model of the original dental jaw of the patient through three-dimensional design software such as CAD (computer-aided design) and the like on the basis of the original dental jaw data so as to obtain dental jaw model data of the patient;

3. and (5) cutting teeth. Selecting a crown outline area through the mark points, selecting a crown outline, and determining the crown area of a single tooth; the marking points are marked in the gum line and the adjacent tooth dividing area, and the marking points are manually selected;

4. repairing adjacent facet and extracting tooth body. Wherein the content of the first and second substances,

repairing the temporary surface by adopting an industry conventional method;

the extraction of the tooth body is to establish a three-dimensional model of the whole jaw tooth body through CBCT data, and because connection and intersection areas exist among the models, the extraction of the tooth body is carried out in a mode of area selection;

5. the tooth crown and the tooth body are matched. Matching the model through a minimum distance algorithm by using tooth volume data extracted through CBCT data and crown data obtained through three-dimensional scanning, and then matching and fusing the model through a model expansion algorithm;

6. the target positions are aligned. Aligning the teeth of the patient in software to obtain the expected tooth positions after orthodontic treatment and generating images;

7. the teeth are moved in steps. Designing a correction scheme through a correction target of a patient and an original three-dimensional model of the jaw, then creating a corresponding jaw data model by using three-dimensional design software according to the correction targets of 5-80 stages (the number of the specific correction stages is determined according to the specific condition of the patient and the correction scheme made by a doctor for the patient) in the correction process, and designing the maximum displacement for each step of correction of teeth to be corrected, so as to ensure that the teeth are not loosened at the same time of correction, and the displacement of different teeth in each stage is also distinguished due to different correction amounts required by different teeth;

8. and analyzing the position of the mobile type anchorage tooth. Determining whether the anchorage of the anchorage tooth is enough or not according to the tooth moving steps or determining whether the anchorage meets the requirements or not by combining the surface area of the tooth root of the anchorage and the surface area of the tooth root of the non-anchorage tooth;

9. determining a reinforcing area and a structural design, and/or determining an anchorage area and a structural design.

The method for determining the reinforced area may be: analyzing the formed thickness distribution of the appliance according to clinical experience, production process and product detection, and determining;

for example, the ease of tooth movement is judged based on clinical experience: problems such as the torsion of the cuspid, the far and middle movement of the molars, etc., require a material with a large elastic modulus to wrap the crown region to provide the orthodontic force, and thus require the design of a reinforcing region;

in addition, in the case where the thickness distribution of the conventional appliances tends to decrease from the incisal ends of the teeth toward the gingival side of the teeth, it is obvious that the appliances are not strong enough in the gingival area in the area where the torque control of the teeth is required, and in general, the thickness distribution of the invisible appliances in the incisal ends and the gingival side is required to be as uniform as possible in the torque control, and therefore, the local reinforcement is required.

The structural design of the reinforced area can realize area reinforcement by changing the height of the base area of the area to be reinforced, or adopting various modes of area-variable thickness diaphragms and the like, or carrying out reinforcement treatment on the area to be reinforced by locally coating or spraying the same type of bonding curing agent provided by diaphragm manufacturers;

the anchorage reinforcement structure means that the control of teeth which do not need to move is realized by changing the local or overall structure of the orthodontic treatment in the orthodontic process of the teeth, namely, the teeth which do not need to move are kept still, or the possibility of the movement of the teeth is reduced as much as possible.

The utility model discloses in, the method that the regional adoption of definite anchorage is through the data and the technology test of tooth body information and the anchorage selection of product property test result after synthesizing and confirms the rule, for example: the selection can be carried out after comprehensive consideration is carried out by combining the surface area of the tooth root, the thickness distribution of the appliance and the release condition of the specific correction force of the appliance.

The structural design of the anchorage region may be thickened relative to other parts, or the elasticity of the non-anchorage region may be increased, or the anchorage region is realized in multiple ways of adopting a material with a large elastic modulus, enhancing the rigidity, adding an auxiliary control accessory and the like;

10. and manufacturing a hidden appliance body model. Specifically, solid target models of the invisible appliance body at different stages in the correction process are obtained through three-dimensional printing or rapid prototyping technology;

11. the invisible appliance body is processed, in particular to hot-press forming processing or similar technology. Wherein, the hot-press molding is, for example, to put a polymer transparent film on the model by using a vacuum film pressing machine to press the film, so as to generate the invisible appliance body;

12. and (3) processing a local reinforcing structure and/or an anchorage reinforcing structure.

The specific processing method can be as follows:

the adhesive provided by a material manufacturer is coated on the surface of the invisible appliance body for local rigidity increase, or,

pressing the membrane with uneven thickness by a hot press molding process; or the like, or, alternatively,

the balance of the symmetrical area is achieved by removing the local material of the appliance;

when the local reinforced structural part and/or the anchorage reinforced structural part is processed, the successful processing of the local reinforced structure and/or the anchorage reinforced structure is realized by designing the change of lamination parameters, such as the change of temperature, pressure and cooling time, the position of model placement, the change of thickness distribution of adopted membrane material and the like. For example: the difference in thickness of the appliance zones can be achieved using a membrane material of varying zone thickness.

The local reinforcement and/or anchorage reinforcement may be a separate part or a structure machined directly into the invisible appliance body.

After the manufacturing is finished, the local reinforcing structure and/or the anchorage reinforcing structure and the invisible appliance body are of an integrated structure.

The ware is rescued in the stealthy of accomplishing with the preparation and is clinically worn, if the clinical condition of wearing the appearance and not laminating or not wearing into, need redesign scheme, the ware is rescued in the processing.

Example one

Fig. 2 is a schematic view of an invisible orthodontic appliance body according to a first embodiment of the present invention, which is suitable for lateral incisor torsion.

Referring to fig. 3, a schematic view of the local reinforcing structure of the invisible appliance of the first embodiment is shown, the local reinforcing structure in this embodiment is a separate accessory, and the teeth of the local reinforcing structure are incisors, lateral incisors and cuspids, and the local reinforcing structure is used when the local reinforcing structure needs to be arranged according to the analysis method provided in the above method.

Fig. 4 is a schematic view of the invisible orthosis body and the local reinforcing structural member of the first embodiment after being combined into a whole; as can be seen in fig. 4, the shape of the local reinforcing structure conforms to the shape of the invisible appliance body; wherein, the mode that ware body is rescued in stealth and local reinforced structure spare combination can be following arbitrary: one-time hot press molding, two-time hot press molding, local coating of the binder, and 3D printing of the local reinforcing structural part and bonding of the local reinforcing structural part and the appliance through the binder.

Example two

Referring to fig. 5, a schematic view of a local anchorage structure according to a second embodiment of the present invention is shown, where the local anchorage structure is a separate accessory, and the position of the tooth corresponding to the local anchorage structure is defined as the region of the anchorage tooth, and the local anchorage structure is set when anchorage reinforcement is required.

Fig. 6 is a schematic view of the invisible orthosis according to the second embodiment of the present invention, which is combined with the local anchorage structure; as can be seen in fig. 6, the shape of the local anchorage structure conforms to the shape of the invisible appliance body; the combination mode of the two can be any one of the following modes: one-time hot press molding, two-time hot press molding, local coating of a binder, 3D printing of a local anchorage structural part and bonding of the local anchorage structural part and the orthodontic appliance through the binder.

Example three

Fig. 7 is a schematic view of a third embodiment of the present invention, showing a local reinforcing structure for canine tooth torsion, wherein the local reinforcing structure is a single accessory; the position of the tooth corresponding to the local reinforcing structure is a lateral incisor, a cuspid or a double cuspid area, and the local reinforcing structure is required to be arranged under the condition that the cuspid needs to be twisted.

Please refer to fig. 8, which is a schematic view of the combination of the invisible orthodontic appliance body and the local reinforcing structure for canine torsion according to the third embodiment of the present invention. As can be seen in fig. 8, the shape of the local reinforcing structure conforms to the shape of the invisible appliance body; the combination mode of the two can be any one of the following modes: one-time hot press molding, two-time hot press molding, local coating of the binder, and 3D printing of the local reinforcing structural part and bonding of the local reinforcing structural part and the appliance through the binder.

In addition, above-mentioned example one, example two, example three all are local additional strengthening spare or local anchorage structure spare and stealthy combination of correcting the ware body, and in addition, it is right the utility model discloses, can also be with stealthy combination of correcting the ware body simultaneously with local additional strengthening spare and local anchorage structure spare, set up local additional strengthening structure and local anchorage structure promptly simultaneously.

The utility model discloses a ware is rescued in local strenghthened type stealthy part that can realize stealthy ware of rescuring is strengthened, and some tooth moving means control is not enough when effectively reducing the ware is rescued in the adoption tradition stealthy, anchorage is not enough, rescues ware local fracture, crackle scheduling problem, effectively promotes and extends the indication range of stealthy ware of rescuring.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The invisible appliance is characterized by being provided with a reinforcing structure or a relative reinforcing structure for improving the control and/or anchorage control of the invisible appliance on a determined tooth moving mode and/or improving the crack resistance of the invisible appliance, wherein the reinforcing structure is integrally formed on the invisible appliance or is attached to the local part of the invisible appliance.

2. The invisible appliance of claim 1, wherein the reinforcing structure is co-designed and simultaneously formed and integrally formed during the design process of the invisible appliance, and the reinforcing structure is made of the same material as the rest of the invisible appliance.

3. The invisible appliance of claim 1 or 2, wherein the invisible appliance and the reinforcing structure are integrally manufactured using 3D/4D printing technology.

4. The invisible appliance of claim 1, wherein the reinforcing structure is arranged on the body of the invisible appliance after the body of the invisible appliance is manufactured and is designed and manufactured according to the structural defects of the body of the invisible appliance and the analysis of the tooth condition of the patient.

5. The invisible appliance of claim 3, wherein the 3D printing of the invisible appliance and the reinforcing structure is achieved by adjusting the thickness of the local structure of the appliance model in software, or by adding local materials after the 3D printing of the model is completed.

6. The invisible appliance of claim 4, wherein the 3D printing of the invisible appliance and the reinforcing structure is achieved by adjusting the thickness of the local structure of the appliance model in software, or by adding local materials after the 3D printing of the model is completed.

7. The invisible appliance of claim 1, wherein the reinforcing structure is a change in local thickness relative to an original invisible appliance product.

8. The invisible orthosis of claim 1, wherein the reinforcement structure provided in the part of the invisible orthosis is formed by coating or spraying a similar adhesive curing agent on the part of an existing invisible orthosis product.

9. The invisible appliance of claim 1, wherein the reinforcing structure for anchorage control is a structure formed by one of the following methods: thickening of the anchorage region, increasing the elasticity of the non-anchorage region, using a material with a higher elastic modulus than other parts in the anchorage region, using a material with a higher rigidity than other parts in the anchorage region, or adding an additional mechanism or an accessory in the anchorage region.