Shell-shaped dental aligner with a guide plate and shell-shaped dental aligner system with a guide plate

Abstract

The utility model discloses a kind of shell-shaped dental appliance provided with guide plate, it includes shell-shaped main body and guide plate, the shell-shaped main body is integrated shell, forms the cavity of accommodating patient maxillary dentition, the guide plate is protrusively arranged in the lingual side of the shell-shaped main body, in occlusion state, the guide plate labial side is in close proximity to the shell-shaped main body and the incisal end of the corresponding tooth of opposite jaw is abutted, the end of the guide plate and the lingual side of the opposite jaw tooth is abutted.

Description

Technical Field

[0001] This utility model generally relates to a shell-shaped orthodontic appliance with a guide plate and a shell-shaped orthodontic appliance system with a guide plate. Background Technology

[0002] Due to their advantages in aesthetics, convenience, and ease of cleaning, shell-shaped orthodontic appliances are becoming increasingly popular in the field of orthodontics.

[0003] A shell-shaped orthodontic appliance is a single, integrated shell that forms a cavity to accommodate the patient's dentition. After being worn, the shell-shaped appliance undergoes elastic deformation, using the elastic force generated by this deformation to reposition the teeth.

[0004] In some cases, it is necessary to intrude the patient's anterior teeth, such as in cases of deep overbite. Intrusion of the anterior teeth using only the geometry of the cavity in a shell-type orthodontic appliance is quite challenging. Therefore, a flat guide plate is usually used to assist in intrusion. However, because the working surface of the flat guide plate is planar, it is prone to slipping in the anteroposterior direction when in contact with the mandibular teeth, generating forces in directions other than the intrusion force, leading to side effects such as mandibular retrusion or labial tipping of the maxillary anterior teeth.

[0005] In view of the above, it is necessary to provide a new shell-shaped orthodontic appliance with a guide plate. Utility Model Content

[0006] One aspect of this utility model provides a shell-shaped orthodontic appliance with a guide plate, which includes a shell-shaped body and a guide plate. The shell-shaped body is an integral shell that forms a cavity to accommodate the patient's maxillary dentition. The guide plate is protrudingly disposed on the lingual side of the shell-shaped body. In the occlusal state, the labial side of the guide plate abuts against the incisal edge of the corresponding tooth of the opposing tooth near the shell-shaped body, and the end of the guide plate abuts against the lingual side of the opposing tooth.

[0007] In some embodiments, the guide plate is disposed in the anterior tooth region of the shell-shaped body. In the occlusal state, the labial side of the guide plate abuts against the incisal end of the corresponding anterior tooth of the opposing jaw near the shell-shaped body, opening the occlusion to a certain extent to convert the occlusal force into a depressing force on the corresponding anterior tooth of the opposing jaw. The end of the guide plate abuts against the lingual side of the opposing anterior tooth, providing a lingual force to the maxillary anterior tooth on which the guide plate is disposed.

[0008] In some embodiments, the shell-shaped orthodontic appliance has protruding wing supports on the lingual or buccal side of the posterior tooth region on both sides. In the occlusal state, the wing supports abut against the wing supports of the opposing shell-shaped orthodontic appliance to prevent the mandible from moving forward and / or retracting, and to lock the guide plate and the corresponding anterior teeth of the opposing jaw in the desired fit.

[0009] In some embodiments, the labial surface of the guide plate forms a gap with the opposing tooth in a section from the point where it abuts against the incisal end of the opposing tooth to the end of the guide plate.

[0010] In some embodiments, the lip surface of the guide plate is recessed.

[0011] In some embodiments, the lip surface of the guide plate is a smooth curved surface.

[0012] In some embodiments, the guide plate is disposed on the lingual side of the shell-like body in the region corresponding to a single tooth of the maxillary dentition.

[0013] In some embodiments, the guide plate is disposed on the lingual side of the shell-like body in the region corresponding to two or more adjacent teeth of the maxillary dentition.

[0014] Another aspect of this utility model provides a shell-shaped orthodontic appliance system with guide plates, comprising N successive shell-shaped orthodontic appliances, each corresponding to N successive orthodontic steps, for progressively repositioning the patient's teeth from a first tooth layout to a second tooth layout. One of the following parameters of the guide plates of the N successive shell-shaped orthodontic appliances varies with the target tooth layout of the N orthodontic steps: geometry, size, position, and any combination thereof, such that in each orthodontic step, the occlusion is opened to a predetermined degree.

[0015] In some implementations, the degree of occlusal opening is consistent across the N successive orthodontic steps.

[0016] In some implementations, during the N successive orthodontic steps, the distance between the incisal edge of the opposing anterior tooth and the point where the guide plate abuts against the incisal edge of the maxillary anterior tooth on which the guide plate is located gradually decreases.

[0017] In some implementations, during the N successive orthodontic steps, the distance from the end of the guide plate abutting against the lingual surface of the opposing anterior tooth to the incisal edge of the opposing anterior tooth gradually decreases.

[0018] Another aspect of this utility model provides a shell-shaped orthodontic appliance with a guide plate, which includes a shell-shaped body and a guide plate. The shell-shaped body is an integral shell that forms a cavity to accommodate the patient's maxillary dentition. The guide plate is convexly disposed on the lingual side of the shell-shaped body. The labial side of the guide plate near the shell-shaped body forms an abutment. The labial side of the guide plate forms a lingual indentation from the end of the guide plate to the abutment, and is located on the lingual side of the line connecting the end of the guide plate and the abutment.

[0019] In some embodiments, the guide plate is disposed on the lingual side of the anterior tooth region of the shell-shaped body, and the abutment is for the incisal edge of the corresponding mandibular anterior tooth to abut. Attached Figure Description

[0020] The above and other features of this application will be further described below with reference to the accompanying drawings and their detailed description. It should be understood that these drawings only illustrate several exemplary embodiments according to this application and should not be considered as limiting the scope of protection of this application. Unless otherwise specified, the drawings are not necessarily to scale, and similar reference numerals denote similar parts.

[0021] Figure 1 A shell-shaped orthodontic appliance with a guide plate is illustrated in one embodiment of this application.

[0022] Figure 2 Showing Figure 1 The guide plate in the middle;

[0023] Figure 3 The wearing was shown schematically. Figure 1 The diagram shows the fit between the guide plate and the mandibular anterior teeth when the patient's maxillary and mandibular dentitions are in occlusal position using the shell-shaped orthodontic appliance.

[0024] Figure 4 The guide plate in yet another embodiment of this application is illustrated schematically;

[0025] Figure 5 This illustration schematically demonstrates the interaction between the mandibular shell-shaped orthodontic appliance and the maxillary shell-shaped orthodontic appliance in one embodiment of this application;

[0026] Figure 6 A shell-shaped orthodontic appliance is schematically shown in yet another embodiment of this application;

[0027] Figure 7 A shell-shaped orthodontic appliance is schematically shown in yet another embodiment of this application;

[0028] Figure 8 A shell-shaped orthodontic appliance is schematically shown in yet another embodiment of this application;

[0029] Figure 9 This is a schematic flowchart illustrating a method for manufacturing a shell-shaped orthodontic appliance according to one embodiment of this application.

[0030] Figure 10A The diagram schematically illustrates the fit between the guide plate and the 31st tooth in the Mth step of the N successive orthodontic steps; and

[0031] Figure 10BThe diagram schematically illustrates the fit between the guide plate and the 31st tooth in the Pth orthodontic step out of the N successive orthodontic steps. Detailed Implementation

[0032] The following detailed description incorporates the accompanying drawings, which form part of this specification. The illustrative embodiments mentioned in the specification and drawings are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art will understand, based on the teachings of this application, that many other embodiments can be employed and various changes can be made to the described embodiments without departing from the spirit and scope of this application. It should be understood that the various aspects of this application illustrated herein can be arranged, substituted, combined, separated, and designed in many different configurations, all of which are within the scope of this application.

[0033] One aspect of this application provides a shell-shaped orthodontic appliance with a guide plate, comprising a shell-shaped body and a guide plate. The shell-shaped body is an integral shell forming a cavity for accommodating the patient's maxillary dentition. The guide plate is protrudingly disposed on the lingual surface of the anterior tooth region of the shell-shaped body. When the patient's maxillary and mandibular dentitions are in occlusion, the labial surface of the guide plate abuts against the incisal edge of the opposing anterior tooth near the shell-shaped body, providing indentation force to the opposing anterior tooth. The distal end of the guide plate abuts against the lingual surface of the opposing anterior tooth, providing a lingual force to the anterior tooth of the maxillary dentition on which the guide plate is disposed.

[0034] Please refer to Figure 1 The image schematically illustrates a shell-shaped orthodontic appliance 100 with a guide plate in one embodiment of this application.

[0035] The shell-shaped orthodontic appliance 100 includes a shell-shaped body 101 and guide plates 103. The shell-shaped body 101 is a single shell that forms a cavity to accommodate the patient's maxillary dentition. The shell-shaped body 101 has guide plates 103 on the lingual surfaces of the 11th and 21st teeth, which protrude lingually.

[0036] Please refer to Figure 2 It showed Figure 1 Guide plate 103 in the middle.

[0037] The guide plate 103 includes a bottom 1031 near the shell-like body 101 and an end 1033 away from it. The cross-section of the guide plate 103 gradually narrows from the bottom 1031 to the end 1033. The guide plate 103 forms a working surface 1035 on the side of the tooth crown that is concave inward toward the lingual side.

[0038] Please refer to Figure 3 This schematically illustrates the interaction between the guide plate 103 and the mandibular anterior teeth when the maxillary and mandibular dentitions of the patient wearing the shell-shaped orthodontic appliance 100 are in occlusal position.

[0039] The working surface 1035 of the guide plate 103 corresponding to tooth 11 abuts against the cutting edge of tooth 31 near its bottom 1031. Under the action of the biting force, the cutting edge of tooth 31 applies a force F1 to tooth 11 at the point of contact with the guide plate 103. This force includes a horizontal component F. 11 and the vertical component F 12 , of which F 11 It is a lingual-labial force that can cause the labial inclination of tooth 11, F. 12 The reaction force can press down tooth #31.

[0040] The end 1033 of the guide plate 103 corresponding to tooth 11 abuts against the lingual surface of tooth 31 to open the bite to the desired degree. Under the action of the occlusal force, the lingual surface of tooth 31 applies a force F2 to tooth 11 at the end 1033 of the guide plate 103, which includes a horizontal component F. 21 and the vertical component F 22 , of which F 21 It is a lip-and-tongue force that can at least partially counteract F. 11 To alleviate F 11 For the labial inclination effect of tooth #11, F 22 The reaction force can press down tooth #31.

[0041] The above-mentioned fit between guide plate 103 and tooth 31 can alleviate or even avoid the lip tilting effect on tooth 11 when tooth 31 is depressed using guide plate 103.

[0042] Since the guide plate 103 abuts against the lingual surface of tooth 31 with its end 1033, the abutment position of the end 1033 on the lingual surface of tooth 31 can be selected according to specific circumstances and needs. For example, by setting the position of the end 1033 on the guide plate 103, the end 1033 can abut against the lingual surface of tooth 31 near the root of tooth 31 to enhance anchorage.

[0043] A bevel 1037 is formed between the point where the guide plate 103 abuts against the incisal edge of tooth 31 and the incisal edge of the shell-shaped body 101. Under the action of occlusal force, the engagement between the bevel 1037 and the incisal edge of tooth 31 can generate a posterior force on the mandible. The end 1033 of the guide plate 103 abuts against the lingual surface of tooth 31, which can prevent mandibular retrusion. Under the action of occlusal force, the shell-shaped orthodontic appliance 100 can lock the relative position of the maxilla and mandible in the sagittal direction (i.e., the anterior-posterior direction) in the working position, that is, the bottom of the lingual surface of the guide plate 103 abuts against the incisal edge of tooth 31, and the end 1033 of the guide plate 103 abuts against the lingual surface of tooth 31.

[0044] The working surface 1035 of the guide plate 103 forms a gap between the end 1033 and the incisal end of the corresponding anterior tooth of the opposing tooth.

[0045] Based on the teachings of this application, it can be understood that the working surface of the guide plate can be any suitable geometric shape. For example, it can be a smooth curved surface, or it can be formed by splicing together multiple planes that form a certain angle with each other, or it can be formed by splicing together planes and curved surfaces.

[0046] Please refer to Figure 4 The diagram illustrates a guide plate 103a in another embodiment of this application, whose working surface 1035a is composed of three planes spliced ​​together at a certain angle to each other.

[0047] In one embodiment, mutually cooperating wings may also be provided on the lingual or buccal side of the posterior tooth region of the upper and lower jaw shell-shaped orthodontic appliance to ensure that the relative position between the upper and lower jaws is locked in the working position, and / or to ensure that the cooperation between the guide plate and the corresponding opposing anterior tooth applies the desired force on the anterior tooth on which the guide plate is provided.

[0048] Please refer to Figure 5 The diagram schematically illustrates the interaction between the mandibular shell-shaped orthodontic appliance 110b and the maxillary shell-shaped orthodontic appliance 120b.

[0049] The mandibular shell-shaped orthodontic appliance 110b has a protruding wing 115b on the buccal side of the posterior tooth region, and the maxillary shell-shaped orthodontic appliance 120b has a protruding wing 125b on the buccal side of the posterior tooth region. The wing 115b is located behind the wing 125b. In the occlusal state, the cooperation between the wing 115b and 125b can prevent mandibular retrusion, so as to ensure that the end of the guide plate of the maxillary shell-shaped orthodontic appliance 110b abuts against the lingual surface of the corresponding mandibular anterior tooth.

[0050] Based on the teachings of this application, it is understood that wing supports can be configured according to specific needs. For example, the lower wing support can be located in front of the upper wing support, or two wing supports can be provided on the upper jaw to sandwich the lower wing support in the middle, or two wing supports can be provided on the lower jaw to sandwich the upper wing support in the middle.

[0051] In one embodiment, the guide plate can be integrally formed with the shell-like body. For example, the guide plate and the shell-like body can be fabricated as a single unit using a hot-press molding process or 3D printing technology. In another embodiment, the guide plate can also be a separate component, fixedly installed to the shell-like body by means of bonding or welding.

[0052] In the above embodiments, each guide plate is disposed in the area corresponding to the shell-like body and the corresponding single anterior tooth. In another embodiment, a guide plate may also be disposed in the area corresponding to the shell-like body and two or more consecutive teeth.

[0053] Please refer to Figure 6 The image schematically illustrates a shell-shaped orthodontic appliance 100c according to another embodiment of this application.

[0054] The shell-shaped orthodontic appliance 100c has guide plates 103c on the lingual side of the area corresponding to teeth 11 and 12, and guide plates 103c on the lingual side of the area corresponding to teeth 21 and 22. The labial side of each guide plate 103c abuts against the incisal edges of the two corresponding opposing anterior teeth near its base, and its distal end abuts against the lingual surface of these two opposing anterior teeth.

[0055] Please refer to Figure 7 The image schematically illustrates a shell-shaped orthodontic appliance 100d according to another embodiment of this application.

[0056] The shell-shaped orthodontic appliance 100d has a guide plate 103d on the lingual side of the area corresponding to teeth 12, 11, 21 and 22. The labial side of the guide plate 103d abuts against the incisal edges of teeth 32, 31, 41 and 42 near the bottom, and the end abuts against the lingual side of these four mandibular anterior teeth.

[0057] Due to the position and irregular surface geometry of the teeth, the geometry of the labial side of the guide plate near the bottom and the geometry of the guide plate end can be determined according to the designed force application scheme. This ensures that, in occlusion, the labial side of the guide plate near the bottom abuts against the incisal edge of a pre-selected first set of opposing teeth, and the end of the guide plate abuts against the lingual surface of a pre-selected second set of opposing teeth. The first and second sets of opposing teeth can be the same or different.

[0058] Please refer to Figure 8 The image schematically illustrates a shell-shaped orthodontic appliance 100e in yet another embodiment of this application.

[0059] The shell-shaped orthodontic appliance 100e has a guide plate 103e on the lingual side of the area corresponding to tooth 11. The labial side of the guide plate 103e abuts only against the incisal edge of tooth 31 near the bottom, and its end forms a fork, abutting against the lingual sides of teeth 31 and 32 respectively. This arrangement can strengthen the resistance to prevent labial tipping of tooth 11.

[0060] Although the guide plates are all disposed on the maxillary anterior teeth in the above exemplary embodiments, it can be understood, under the guidance of this application, that the guide plates can also be disposed on the maxillary posterior teeth for correcting malocclusion or adjusting the torque of the posterior teeth.

[0061] Orthodontic treatment using shell-shaped appliances typically requires dozens of successive shell-shaped appliances, each corresponding to one treatment step. By wearing these appliances one by one, the patient's teeth are gradually repositioned from the initial tooth arrangement to the target tooth arrangement. During orthodontic treatment, the position of the anterior teeth with guide plates and / or the anterior teeth that mate with the guide plates may change. To ensure that the bite opens to the predetermined degree in multiple successive steps, one of the following parameters of the guide plates of the multiple successive shell-shaped appliances can be determined based on the relative positional relationship between the anterior teeth with guide plates and the corresponding opposing anterior teeth: geometry, size, position on the shell body (including position and posture / angle), and any combination thereof. That is to say, the above parameters of the guide plates of the multiple successive shell-shaped appliances can vary / be different.

[0062] In one embodiment, the guide plate ensures a consistent degree of occlusal opening across N orthodontic steps. In another embodiment, different degrees of occlusal opening can be preset for different orthodontic steps.

[0063] Another aspect of this application provides a method for manufacturing a shell-shaped orthodontic appliance.

[0064] Please refer to Figure 9 This is a schematic flowchart illustrating a method 200 for manufacturing a shell-shaped orthodontic appliance according to one embodiment of this application.

[0065] In 201, a three-dimensional digital model of the patient's upper and lower dentitions is obtained, representing N successive tooth layouts.

[0066] Each of the N successive tooth layouts is a target tooth layout for a corresponding orthodontic step.

[0067] In some cases, only a portion of the successive orthodontic steps may be needed to intrude the corresponding anterior teeth during the entire orthodontic treatment. Therefore, the N successive orthodontic steps can be a part of the entire orthodontic treatment. In other cases, the N successive orthodontic steps can be all the orthodontic steps in the entire orthodontic treatment.

[0068] In step 203, based on the relative positional relationship between the anterior teeth of the maxillary dentition with guide plates set in the N three-dimensional digital models and the anterior teeth of the opposing dentition that cooperate with the guide plates, the guide plate design scheme of the N shell-shaped orthodontic appliances of the first dentition corresponding one-to-one with the N orthodontic steps is determined.

[0069] The design scheme of the guide plate includes the geometry, size, and position of the guide plate on the shell-shaped body.

[0070] In step 205, N successive shell-shaped orthodontic appliances for the first dentition are fabricated based on the guide plate design.

[0071] In each of the N successive orthodontic steps, in the occlusal state, the labial side of the guide plate of the corresponding shell-shaped orthodontic appliance worn by the patient abuts against the incisal edge of the corresponding anterior tooth on the bottom side, and the end of the guide plate abuts against the labial side of the corresponding anterior tooth on the occlusal side, so as to depress the corresponding anterior tooth on the occlusal side and relieve the labial tilt of the anterior tooth on which the guide plate is placed.

[0072] In one embodiment, a three-dimensional digital model representing the N successive tooth layouts of the patient's first dentition can be used to control the fabrication of N successive positive molds. Then, a thermoforming process is used to press a film onto each of the N successive positive molds to form N successive shell-shaped bodies. Finally, according to the guide plate design scheme, the corresponding guide plates are fixed to the N successive shell-shaped bodies by means of bonding or welding to obtain N successive shell-shaped orthodontic appliances.

[0073] In another embodiment, according to the design scheme of the guide plate, a corresponding three-dimensional digital model of the guide plate can be added to the three-dimensional digital model representing the N successive tooth layouts of the patient's first dentition, to obtain N successive three-dimensional digital models of positive molds. Then, the three-dimensional digital models of these positive molds are used to control the fabrication of N positive molds. Finally, a hot-press molding process is used to press a film onto the N successive positive molds to obtain N successive shell-shaped orthodontic appliances with guide plates formed on them.

[0074] In another embodiment, according to the design scheme of the guide plate, a corresponding three-dimensional digital model of the guide plate can be added to the three-dimensional digital model representing the N successive tooth layouts of the patient's first dentition, to obtain N successive positive three-dimensional digital models. Then, based on the three-dimensional digital models of the positive models, N successive three-dimensional digital models of shell-shaped orthodontic appliances are generated. Finally, the three-dimensional digital models of these shell-shaped orthodontic appliances are used to control a 3D printing device to produce N successive shell-shaped orthodontic appliances with guide plates.

[0075] Another aspect of this application provides a shell-shaped orthodontic appliance system, comprising N successive shell-shaped orthodontic appliances corresponding one-to-one with N successive orthodontic steps, for progressively repositioning a patient's first dentition from a first dental layout to a second dental layout. Each of the N successive shell-shaped orthodontic appliances includes a shell-shaped body and a guide plate. The shell-shaped body is an integral shell forming a cavity to accommodate the maxillary dentition. The guide plate is protrudingly disposed on the lingual side of the shell-shaped body in the region corresponding to the anterior teeth of the maxillary dentition. In occlusion, the labial side of the guide plate abuts against the incisal edge of the corresponding opposing anterior tooth near the shell-shaped body, providing indentation force to the opposing anterior tooth. The distal end of the guide plate abuts against the lingual side of the corresponding opposing anterior tooth, providing lingual force to the anterior teeth of the maxillary dentition. The guide plate of the N successive shell-shaped orthodontic appliances varies with each orthodontic step in one of the following parameters: geometry, size, position on the shell-shaped body, and any combination thereof.

[0076] Due to changes in tooth position, in the N successive orthodontic steps, the distance between the point where the guide plate abuts against the incisal edge of the opposing anterior tooth and the incisal edge of the maxillary anterior tooth on which the guide plate is placed, and the distance between the point where the end of the guide plate abuts against the lingual side of the opposing anterior tooth and the incisal edge of the opposing anterior tooth, will gradually change.

[0077] Please refer to Figure 10A This schematically illustrates the fit between the guide plate 103a and the 31st tooth in the Mth orthodontic step out of the N successive orthodontic steps.

[0078] The incisal edge of tooth 31 rests against point A of guide plate 103a. At this point, the distance from point A to the incisal edge of tooth 11 is relatively large. The end 1033a of guide plate 103a rests against point B on the lingual side of tooth 31. At this point, the distance from point B to the incisal edge of tooth 31 is relatively large. A section of the surface of guide plate 103a between points A and B forms a lingual indentation, located on the lingual side of the line connecting points A and B.

[0079] Please refer to 10B, which schematically illustrates the relationship between the guide plate 103b and the 31st tooth in the Pth orthodontic step out of the N successive orthodontic steps, where the Pth orthodontic step is located after the Mth orthodontic step.

[0080] The incisal edge of tooth 31 rests against point A' of guide plate 103b. At this point, the distance from point A' to the incisal edge of tooth 11 is less than the distance from point A to the incisal edge of tooth 11. The end 1033b of guide plate 103b rests against point B' on the lingual side of tooth 31. At this point, the distance from point B' to the incisal edge of tooth 31 is less than the distance from point B to the incisal edge of tooth 31.

[0081] Although various aspects and embodiments of this application have been disclosed herein, other aspects and embodiments of this application will be apparent to those skilled in the art upon inspiration from this application. The various aspects and embodiments disclosed herein are for illustrative purposes only and not for limiting purposes. The scope and spirit of this application are determined solely by the appended claims.

[0082] Similarly, the diagrams may illustrate exemplary architectures or other configurations of the disclosed methods and systems, which aid in understanding the features and functions that may be included in the disclosed methods and systems. The claims are not limited to the exemplary architectures or configurations shown, and the desired features may be implemented with various alternative architectures and configurations. Furthermore, the order of the blocks given herein with respect to flowcharts, functional descriptions, and method claims should not be limited to various embodiments implemented in the same order to perform the said functions, unless explicitly indicated in the context.

[0083] Unless otherwise expressly stated, the terms and phrases used herein, and their variations thereof, should be interpreted as open-ended rather than restrictive. In some instances, the appearance of extended words and phrases such as “one or more,” “at least,” “but not limited to,” or other similar expressions should not be construed as an intention or necessity to indicate a narrower scope in examples where such extended expressions might not exist.

Claims

1. A shell-shaped orthodontic appliance with a guide plate, characterized in that, It includes a shell-like body and a guide plate. The shell-like body is an integral shell that forms a cavity to accommodate the patient's maxillary dentition. The guide plate is protruding from the lingual side of the shell-like body. In the occlusal state, the labial side of the guide plate abuts against the incisal edge of the corresponding tooth of the opposing jaw near the shell-like body, and the end of the guide plate abuts against the lingual side of the corresponding tooth of the opposing jaw.

2. The shell-shaped orthodontic appliance as described in claim 1, characterized in that, The guide plate is disposed in the anterior tooth area of ​​the shell-shaped body. In the occlusal state, the labial side of the guide plate abuts against the incisal end of the corresponding anterior tooth of the opposing jaw near the shell-shaped body, opening the occlusion to a certain extent so as to convert the occlusal force into a depressing force on the corresponding anterior tooth of the opposing jaw. The end of the guide plate abuts against the lingual side of the opposing anterior tooth, providing a lingual force to the maxillary anterior tooth on which the guide plate is disposed.

3. The shell-shaped orthodontic appliance as described in claim 1, characterized in that, The shell-shaped orthodontic appliance has protruding wing supports on the lingual or buccal side of the posterior tooth area on both sides. In the occlusal state, the wing supports abut against the wing supports of the opposing shell-shaped orthodontic appliance to prevent the mandible from moving forward and / or retracting, and to lock the guide plate and the corresponding anterior teeth of the opposing jaw in the desired fit.

4. The shell-shaped orthodontic appliance as described in claim 1, characterized in that, The labial surface of the guide plate forms a gap with the corresponding tooth of the opposing jaw between the section where it abuts against the incisal end of the opposing tooth and the end of the guide plate.

5. The shell-shaped orthodontic appliance as described in claim 4, characterized in that, The lip surface of the guide plate is recessed.

6. The shell-shaped orthodontic appliance as described in claim 5, characterized in that, The lip surface of the guide plate is a smooth curved surface.

7. The shell-shaped orthodontic appliance as described in claim 1, characterized in that, The guide plate is disposed on the lingual side of the shell-shaped body, corresponding to the area of ​​a single tooth in the maxillary dentition.

8. The shell-shaped orthodontic appliance as described in claim 1, characterized in that, The guide plate is disposed on the lingual side of the shell-shaped body in the region corresponding to two or more adjacent teeth of the maxillary dentition.

9. A shell-shaped orthodontic appliance system with a guide plate, characterized in that, It comprises N successive shell-shaped orthodontic appliances as described in claim 2, each corresponding to N successive orthodontic steps, for progressively repositioning the patient's teeth from a first dental layout to a second dental layout, wherein one of the following parameters of the guide plates of the N successive shell-shaped orthodontic appliances varies with the target dental layout of the N orthodontic steps: geometry, size, position, and any combination thereof, such that in each orthodontic step, the occlusion is opened to a predetermined degree.

10. The shell-shaped orthodontic appliance system as described in claim 9, characterized in that, In the N successive orthodontic steps, the degree of occlusal opening is consistent.

11. The shell-shaped orthodontic appliance system as described in claim 9, characterized in that, In the N successive orthodontic steps, the distance between the incisal edge of the opposing anterior tooth and the point where the guide plate abuts against the incisal edge of the maxillary anterior tooth on which the guide plate is placed gradually decreases.

12. The shell-shaped orthodontic appliance system as described in claim 9, characterized in that, In the N successive orthodontic steps, the distance from the end of the guide plate abutting the lingual side of the opposing anterior tooth to the incisal edge of the opposing anterior tooth gradually decreases.

13. A shell-shaped orthodontic appliance with a guide plate, characterized in that, It includes a shell-shaped body and a guide plate. The shell-shaped body is an integral shell that forms a cavity to accommodate the patient's maxillary dentition. The guide plate is convexly disposed on the lingual side of the shell-shaped body. The labial side of the guide plate forms an abutment near the shell-shaped body. The labial side of the guide plate forms a lingual indentation from the end of the guide plate to the abutment, and is located on the lingual side of the line connecting the end of the guide plate and the abutment.

14. The shell-shaped orthodontic appliance with a guide plate as described in claim 13, characterized in that, The guide plate is located on the lingual side of the anterior tooth area of ​​the shell-shaped body, and the abutment is for the incisal edge of the corresponding anterior tooth of the mandible to abut.

Images