An appliance for correcting upper and lower front teeth and its design and manufacturing method

Abstract

The present application belongs to the technical field of oral orthodontics, and discloses an appliance for correcting upper and lower anterior teeth, and a design and manufacturing method thereof. The design comprises an upper posterior alveolar fitable with the patient's maxillary posterior teeth, a lower posterior alveolar fitable with the patient's mandibular posterior teeth, an upper anterior alveolar fitable with the patient's mandibular posterior teeth, and a lower anterior alveolar fitable with the patient's mandibular anterior teeth. The integrated appliance can transmit the reaction force between the upper and lower teeth to enhance the correction effect on the upper and lower anterior teeth. In addition, since the maxillary posterior teeth and the upper posterior alveolar fit as well as the mandibular posterior teeth and the lower posterior alveolar fit are always kept in a tightly fitted state, the posterior teeth can provide a larger correction force to the anterior teeth through the integrated appliance, so that the correction force on the anterior teeth is reduced as the anterior teeth are gradually corrected, thereby making it possible to correct the positions of the upper and lower anterior teeth at the same time, improve the correction speed, and shorten the treatment cycle.

Description

Technical Field

[0001] The present application relates to the technical field of oral orthodontics, and in particular to an appliance for correcting upper and lower anterior teeth and a design and manufacturing method thereof. Background Art

[0002] Traditional braces are used to correct upper and lower teeth independently. When patients need to correct both upper and lower teeth at the same time, two independent braces are usually set up to correct the upper and lower teeth respectively. Using such independent braces to correct the upper and lower teeth separately can provide a small correction force. As the teeth are gradually corrected, the correction force provided by the braces gradually decreases, the correction speed gradually decreases, and a longer treatment cycle is required.

[0003] Therefore, the prior art needs to be improved and enhanced. Summary of the invention

[0004] The purpose of the present application is to provide an appliance for correcting the upper and lower front teeth and a design and manufacturing method thereof, which can correct the positions of the upper and lower front teeth at the same time and improve the correction speed.

[0005] In a first aspect, the present application provides a method for designing an appliance for correcting the upper and lower anterior teeth, which is used to design an appliance for a patient who needs to correct the position of the upper and lower anterior teeth, comprising the steps of:

[0006] A1. Obtaining the patient's initial dental digital model and the patient's upper and lower jaw anterior tooth deformity pattern;

[0007] A2. According to the upper and lower anterior teeth deformity pattern, the upper and lower anterior teeth models in the initial jaw digital model are adjusted in position, and the upper and lower posterior teeth models are kept in position unchanged to obtain a target jaw digital model;

[0008] A3. Generate an integrated orthodontic appliance model based on the maxillary and mandibular anterior teeth deformity pattern and the target jaw digital model, so that the integrated orthodontic appliance model has an upper posterior alveolar groove that can be engaged with the patient's maxillary posterior teeth, a lower posterior alveolar groove that can be engaged with the patient's mandibular posterior teeth, an upper anterior alveolar groove for applying corrective force to the patient's maxillary anterior teeth, and a lower anterior alveolar groove for applying corrective force to the patient's mandibular anterior teeth.

[0009] The integrated orthodontic appliance designed in the above manner can transmit the reaction force between the upper and lower teeth to enhance the correction effect on the upper and lower front teeth. In addition, since the maxillary posterior teeth and the upper posterior alveolar teeth as well as the mandibular posterior teeth and the lower posterior alveolar teeth are always tightly fitted, the posterior teeth can provide a greater correction force to the anterior teeth through the integrated orthodontic appliance, so that the correction force on the anterior teeth decreases less as the anterior teeth are gradually corrected, thereby being able to correct the positions of the upper and lower front teeth at the same time, improving the correction speed and shortening the treatment cycle.

[0010] Preferably, the upper and lower jaw anterior teeth deformity patterns include a first deformity pattern, a second deformity pattern and a third deformity pattern;

[0011] The first deformity pattern is that both the maxillary anterior teeth and the mandibular anterior teeth are tilted, and the tilt directions of the maxillary anterior teeth and the mandibular anterior teeth are opposite;

[0012] The second deformity pattern is that only the maxillary anterior teeth are tilted;

[0013] The third deformity pattern is inclination of the mandibular anterior teeth only.

[0014] Preferably, step A2 comprises:

[0015] A201. Selecting the active adjustment front teeth for the current treatment stage from the maxillary front teeth and the mandibular front teeth according to the maxillary front teeth deformity pattern and the deformity amount of the maxillary front teeth and the mandibular front teeth of the patient;

[0016] A202. Adjust the position of the tooth model for actively adjusting the front teeth.

[0017] By selecting the actively adjusted front teeth in the current treatment stage and only adjusting the position of the tooth model of the actively adjusted front teeth, it is helpful to ensure that the correction force acting on the front teeth is within a reasonable range, thereby improving wearing comfort while ensuring the correction effect.

[0018] Preferably, step A201 includes:

[0019] B1. Determine the maximum amount of correction of the maxillary anterior teeth and the mandibular anterior teeth at the current treatment stage according to the amount of deformity of the maxillary anterior teeth and the mandibular anterior teeth of the patient;

[0020] B2. If the maxillary and mandibular anterior teeth deformity pattern is the first deformity pattern, then according to the maximum correction amount of the maxillary and mandibular anterior teeth in the current treatment stage, the active adjustment anterior teeth in the current treatment stage are selected from the maxillary and mandibular anterior teeth;

[0021] B3. If the maxillary and mandibular anterior teeth deformity pattern is the second deformity pattern, the maxillary anterior teeth are selected as the actively adjusted anterior teeth in the current treatment stage;

[0022] B4. If the deformity pattern of the upper and lower jaw anterior teeth is the third deformity pattern, the lower jaw anterior teeth are selected as the actively adjusted anterior teeth in the current treatment stage.

[0023] For the second and third deformity patterns, only the tilted side of the upper and lower front teeth is adjusted to avoid the orthodontic appliance exerting force on the non-tilted front teeth, thereby causing the originally non-tilted front teeth to become tilted.

[0024] Preferably, step B1 comprises:

[0025] Determine the maximum rotation of the maxillary and mandibular anterior teeth at the current stage of treatment based on physiological constraints;

[0026] If the deformity of the maxillary anterior teeth exceeds the maximum rotation amount of the maxillary anterior teeth, the maximum rotation amount of the maxillary anterior teeth is used as the maximum correction amount of the maxillary anterior teeth in the current treatment stage; otherwise, the deformity of the maxillary anterior teeth is used as the maximum correction amount of the maxillary anterior teeth in the current treatment stage;

[0027] If the deformity of the mandibular anterior teeth exceeds the maximum rotation amount of the mandibular anterior teeth, the maximum rotation amount of the mandibular anterior teeth is taken as the maximum correction amount of the mandibular anterior teeth in the current treatment stage; otherwise, the deformity of the mandibular anterior teeth is taken as the maximum correction amount of the mandibular anterior teeth in the current treatment stage.

[0028] Preferably, after step A202, the method further includes the following steps:

[0029] A203. If the actively adjusted anterior teeth include the maxillary anterior teeth and the mandibular anterior teeth and the maximum correction amount of the actively adjusted anterior teeth in the current treatment stage is less than the second preset threshold, the mandibular digital model is moved along the inclination direction of the maxillary anterior teeth.

[0030] Preferably, step A3 comprises:

[0031] A301. Generate an appliance base block model according to the target dental digital model;

[0032] A302. Using the target dental digital model to perform Boolean subtraction on the appliance base block model to form an upper alveolar and a lower alveolar, thereby obtaining an appliance main body model;

[0033] A303. According to the upper and lower mandibular anterior teeth deformity pattern, the portion of the upper alveolar facing the maxillary anterior teeth and the portion of the lower alveolar facing the mandibular anterior teeth are adjusted to generate the upper posterior alveolar, the upper anterior alveolar, the lower posterior alveolar and the lower anterior alveolar.

[0034] Preferably, step A303 includes:

[0035] If the upper and lower jaw anterior teeth deformity pattern is the first deformity pattern, the side wall of the upper alveolar facing the upper anterior teeth and facing away from the inclination direction of the maxillary anterior teeth is expanded outwards, so that the upper alveolar forms the upper posterior alveolar and the upper anterior alveolar, and the side wall of the lower alveolar facing the mandibular anterior teeth and facing away from the inclination direction of the mandibular anterior teeth is expanded outwards, so that the lower alveolar forms the lower posterior alveolar and the lower anterior alveolar;

[0036] If the upper and lower jaw anterior teeth deformity pattern is the second deformity pattern, the side wall of the upper alveolar facing the upper jaw anterior teeth and facing away from the inclination direction of the maxillary anterior teeth is expanded outwards, so that the upper alveolar forms the upper posterior alveolar and the upper anterior alveolar, and the front and rear side walls of the lower alveolar facing the mandibular anterior teeth are expanded outwards, so that the lower alveolar forms the lower posterior alveolar and the lower anterior alveolar;

[0037] If the deformity pattern of the upper and lower mandibular anterior teeth is the third deformity pattern, the side walls of the lower alveolar facing the mandibular anterior teeth and facing away from the inclination direction of the mandibular anterior teeth are expanded outward so that the lower alveolar forms the lower posterior alveolar and the lower anterior alveolar, and the front and rear side walls of the upper alveolar facing the maxillary anterior teeth are expanded outward so that the upper alveolar forms the upper posterior alveolar and the upper anterior alveolar.

[0038] In a second aspect, the present application provides a method for manufacturing an appliance for correcting upper and lower anterior teeth, comprising the steps of:

[0039] S1. Generate an integrated appliance model based on the appliance design method for correcting the upper and lower anterior teeth described above;

[0040] S2. Prepare an appliance for correcting the upper and lower anterior teeth according to the integrated appliance model.

[0041] In the third aspect, the present application provides an orthodontic appliance for correcting maxillary and mandibular anterior teeth, comprising an orthodontic appliance body, the orthodontic appliance body having an upper posterior alveolar groove that can be engaged with the patient's maxillary posterior teeth, a lower posterior alveolar groove that can be engaged with the patient's mandibular posterior teeth, an upper anterior alveolar groove for applying a corrective force to the patient's maxillary anterior teeth, and a lower anterior alveolar groove for applying a corrective force to the patient's mandibular anterior teeth; the orthodontic appliance for correcting maxillary and mandibular anterior teeth is manufactured by the manufacturing method of the orthodontic appliance for correcting maxillary and mandibular anterior teeth described above.

[0042] Beneficial effects: The orthodontic appliance for correcting the upper and lower anterior teeth provided in the present application, and the design and manufacturing method thereof, can transmit the reaction force between the upper and lower teeth to enhance the correction effect on the upper and lower anterior teeth. In addition, since the maxillary posterior teeth and the upper posterior alveolar teeth as well as the mandibular posterior teeth and the lower posterior alveolar teeth are always kept in a tight fit, the posterior teeth can provide a greater correction force to the anterior teeth through the integrated appliance, so that the correction force on the anterior teeth decreases less as the anterior teeth are gradually corrected, thereby being able to correct the positions of the upper and lower anterior teeth at the same time, improving the correction speed and shortening the treatment cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A flow chart of a method for designing an appliance for correcting upper and lower anterior teeth provided in an embodiment of the present application.

[0044] Figure 2 A flow chart of a method for manufacturing an appliance for correcting upper and lower anterior teeth provided in an embodiment of the present application.

[0045] Figure 3 A three-dimensional image of the appliance for correcting the upper and lower anterior teeth provided in an embodiment of the present application at a certain angle.

[0046] Figure 4 A three-dimensional image of the appliance for correcting the upper and lower anterior teeth provided in an embodiment of the present application at another angle.

[0047] Figure 5 A schematic diagram of the structure of an exemplary dental digital model.

[0048] Figure 6 A tooth position diagram of an exemplary dental jaw.

[0049] Figure 7 Schematic diagram of the appliance base block model.

[0050] Explanation of reference numerals: 100, maxillary digital model; 200, mandibular digital model; 300, appliance body; 301, upper posterior alveolar; 302, lower posterior alveolar; 303, upper anterior alveolar; 304, lower anterior alveolar. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0052] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0053] Please refer to Figure 1 In some embodiments of the present application, a method for designing an appliance for correcting the upper and lower front teeth is used to design an appliance for a patient who needs to correct the position of the upper and lower front teeth, comprising the steps of:

[0054] A1. Obtain the patient's initial dental digital model and the patient's maxillary and mandibular anterior tooth deformity pattern;

[0055] A2. According to the deformity pattern of the upper and lower anterior teeth, the upper and lower anterior teeth models in the initial jaw digital model are adjusted, and the positions of the upper and lower posterior teeth models are kept unchanged to obtain the target jaw digital model;

[0056] A3. Generate an integrated orthodontic appliance model based on the maxillary and mandibular anterior tooth deformity patterns and the target jaw digital model, so that the integrated orthodontic appliance model has an upper posterior alveolar that can be fitted with the patient's maxillary posterior teeth (i.e., the upper posterior alveolar matches the shape and size of the patient's maxillary posterior teeth), a lower posterior alveolar that can be fitted with the patient's mandibular posterior teeth (i.e., the lower posterior alveolar matches the shape and size of the patient's mandibular posterior teeth), an upper anterior alveolar for applying corrective force to the patient's maxillary anterior teeth, and a lower anterior alveolar for applying corrective force to the patient's mandibular anterior teeth.

[0057] The integrated orthodontic appliance designed in the above manner can transmit the reaction force between the upper and lower teeth to enhance the correction effect on the upper and lower front teeth. In addition, since the maxillary posterior teeth and the upper posterior alveolar teeth as well as the mandibular posterior teeth and the lower posterior alveolar teeth are always tightly fitted, the posterior teeth can provide a greater correction force to the anterior teeth through the integrated orthodontic appliance, so that the correction force on the anterior teeth decreases less as the anterior teeth are gradually corrected, thereby being able to correct the positions of the upper and lower front teeth at the same time, improving the correction speed and shortening the treatment cycle.

[0058] Among them, since the entire corrective treatment process generally includes multiple treatment stages, each treatment stage requires the design of a corresponding orthodontic appliance for correction. Therefore, in each treatment stage, the orthodontic appliance corresponding to the treatment stage is designed according to steps A1 to A3.

[0059] The initial dental digital model refers to the dental digital model at the beginning of the current treatment stage. If the current treatment stage is the first treatment stage in the entire orthodontic treatment process, the initial dental digital model actually refers to the dental digital model of the user before receiving treatment.

[0060] Among them, reference Figure 5 The dental digital model generally includes a maxillary digital model 100 and a mandibular digital model 200. The maxillary digital model 100 includes an upper dentition model (the upper dentition model is composed of multiple upper tooth models), a maxillary bone model and an upper gum model. The mandibular digital model 200 includes a lower dentition model (the lower dentition model is composed of multiple lower tooth models), a mandibular bone model and a lower gum model. The maxillary digital model 100 and the mandibular digital model 200 are placed according to the occlusal relationship (the occlusal relationship actually refers to the relative position between the maxillary digital model 100 and the mandibular digital model 200).

[0061] Among them, existing technologies can be used to obtain the user's initial dental and jaw digital model; for example, three-dimensional data of teeth, jaws, gums and other surrounding tissues can be obtained through optical scanning technology, X-ray or ultrasonic imaging technology, CT scanning or magnetic resonance imaging technology, and further digital models of the above-mentioned parts can be established through manual segmentation, computer automatic segmentation or semi-automatic segmentation combining the two, so as to obtain an initial maxillary digital model and an initial mandibular digital model, and a lateral skull view can be obtained through X-ray or ultrasonic imaging technology, CT scanning or magnetic resonance imaging technology, and then occlusal parameters such as FH plane and condylar guide inclination can be obtained according to the lateral skull view, and finally the initial maxillary digital model and the initial mandibular digital model can be positioned based on the occlusal parameters to obtain the initial dental and jaw digital model.

[0062] The anterior teeth here are generally the teeth in the 4-4 area of ​​the anterior teeth, and the other teeth are the posterior teeth. Figure 6In the dental diagram shown, for the upper dentition, the anterior 4-4 area refers to the area from tooth No. 14 to tooth No. 24; for the lower dentition, the anterior 4-4 area refers to the area from tooth No. 44 to tooth No. 34.

[0063] Among them, the maxillary and mandibular anterior tooth deformity patterns are the first deformity pattern, the second deformity pattern, and the third deformity pattern;

[0064] The first deformity pattern is that both the maxillary and mandibular anterior teeth are tilted, and the maxillary and mandibular anterior teeth tilt in opposite directions; for example, the maxillary anterior teeth tilt toward the labial side and the mandibular anterior teeth tilt toward the lingual side, or the maxillary anterior teeth tilt toward the lingual side and the mandibular anterior teeth tilt toward the labial side;

[0065] The second deformity pattern is that only the maxillary anterior teeth are tilted; for example, only the maxillary anterior teeth are tilted labially and the mandibular anterior teeth are not tilted, or only the maxillary anterior teeth are tilted lingually and the mandibular anterior teeth are not tilted;

[0066] The third deformity pattern is that only the mandibular anterior teeth are tilted; for example, only the mandibular anterior teeth are tilted labially and the maxillary anterior teeth are not tilted, or only the mandibular anterior teeth are tilted lingually and the maxillary anterior teeth are not tilted.

[0067] Among them, whether the front teeth are tilted is relative to the standard angle of the front teeth. If there is an angle deviation between the actual inclination angle of the front teeth and the standard angle of the front teeth that exceeds the tolerance range, the front teeth are considered to be tilted. Among them, if the actual inclination angle of the tilted front teeth is biased towards the labial side relative to the standard angle, it is tilted toward the labial side. If the actual inclination angle of the tilted front teeth is biased towards the lingual side relative to the standard angle, it is tilted toward the lingual side.

[0068] Therefore, the design method of the present application is actually for designing orthodontic appliances for patients with these upper and lower mandibular anterior tooth deformity patterns. The design method of the present application is not applicable to other deformity patterns.

[0069] When the deformity mode of the maxillary and mandibular anterior teeth is the first deformity mode, since the inclination directions of the maxillary and mandibular anterior teeth are opposite, the directions of the correction forces required for the maxillary and mandibular anterior teeth are also opposite. The reaction force of the correction force of the maxillary anterior teeth on the mandibular anterior teeth generated at the mandibular anterior teeth is exactly the same as the direction of the correction force required for the mandibular anterior teeth. Similarly, the reaction force of the correction force of the mandibular anterior teeth on the maxillary anterior teeth generated at the maxillary anterior teeth is exactly the same as the direction of the correction force required for the maxillary anterior teeth. Therefore, the correction forces of the maxillary and mandibular anterior teeth can promote each other to speed up the correction. Therefore, compared with the method of using two independent appliances to correct the maxillary and mandibular anterior teeth respectively, the maxillary and mandibular anterior teeth are subjected to greater correction force when corrected using the integrated appliance of the present application.

[0070] When the deformity mode of the maxillary and mandibular anterior teeth is the second deformity mode or the third deformity mode, it is only necessary to apply a correction force to the maxillary anterior teeth or the mandibular anterior teeth, and the correction force can generate a reaction force acting on the maxillary and mandibular posterior teeth at the maxillary and mandibular posterior teeth. Under the anchoring effect of the maxillary and mandibular posterior teeth, it is possible to ensure that the correction force applied to the maxillary and mandibular anterior teeth maintains good stability (the amount of correction force decreases as the anterior teeth are gradually corrected is small). Therefore, compared with the method of using an independent appliance to correct the maxillary and mandibular anterior teeth, correction using the integrated appliance of the present application can maintain the stability of the correction force and thus have a higher correction speed.

[0071] It should be noted that during the entire orthodontic treatment process, the deformity pattern of the maxillary and mandibular anterior teeth may change. For example, before treatment, the deformity pattern of the maxillary and mandibular anterior teeth is the first deformity pattern, and the inclination of the maxillary anterior teeth is higher than that of the mandibular anterior teeth. Thus, at the end of a certain treatment stage, the mandibular anterior teeth are corrected and no longer tilted, but the maxillary anterior teeth are still tilted. Then, in the next treatment stage, the deformity pattern of the maxillary and mandibular anterior teeth changes to the second deformity pattern. Therefore, step A1 obtains the deformity pattern of the maxillary and mandibular anterior teeth at the current treatment stage.

[0072] In step A1, after obtaining the initial dental digital model of the patient, the deformity pattern of the upper and lower jaw anterior teeth of the patient can be determined according to the initial dental digital model.

[0073] Specifically, step A2 includes:

[0074] A201. Select the active adjustment anterior teeth for the current treatment stage from the maxillary anterior teeth and the mandibular anterior teeth according to the maxillary anterior teeth deformity pattern and the deformity amount of the maxillary anterior teeth and the mandibular anterior teeth of the patient;

[0075] A202. Adjust the position of the tooth model for actively adjusting the front teeth.

[0076] By selecting the actively adjusted front teeth in the current treatment stage and only adjusting the position of the tooth model of the actively adjusted front teeth, it is helpful to ensure that the correction force acting on the front teeth is within a reasonable range, thereby improving wearing comfort while ensuring the correction effect.

[0077] Among them, the deformity of the front teeth refers to the angular deviation between the current inclination angle of the front teeth and the target angle; the target angle refers to the inclination angle that the front teeth are expected to achieve at the end of the entire orthodontic treatment process (the target angle can be a standard angle or an angle set by the doctor).

[0078] The deformity of the patient's maxillary anterior teeth and the deformity of the mandibular anterior teeth can be obtained based on the initial dental digital model. Therefore, before step A201, the following steps may be further included:

[0079] A200a. Obtain the current inclination angle of the patient's maxillary anterior teeth and the current inclination angle of the mandibular anterior teeth according to the initial dental digital model;

[0080] A200b. Obtain the target angle of the patient's maxillary anterior teeth and the target angle of the mandibular anterior teeth; for example, the target angle of the maxillary anterior teeth and the target angle of the mandibular anterior teeth can be set manually, or, based on the patient's basic information (for example, including part or all of the information such as gender, age, height, weight, etc.), the target angle of the maxillary anterior teeth and the target angle of the mandibular anterior teeth can be determined by looking up a table or calculated by a deep learning algorithm; but not limited thereto;

[0081] A200c. Calculate the angle deviation of the current inclination angle of the maxillary anterior teeth relative to the target angle of the maxillary anterior teeth to obtain the deformity of the maxillary anterior teeth; and calculate the angle deviation of the current inclination angle of the mandibular anterior teeth relative to the target angle of the mandibular anterior teeth to obtain the deformity of the mandibular anterior teeth.

[0082] In some implementations, step A201 includes:

[0083] B1. According to the deformity of the patient's maxillary anterior teeth and mandibular anterior teeth, determine the maximum correction amount of the maxillary anterior teeth and mandibular anterior teeth in the current treatment stage;

[0084] B2. If the deformity pattern of the maxillary and mandibular anterior teeth is the first deformity pattern, the active adjustment anterior teeth for the current treatment stage are selected from the maxillary and mandibular anterior teeth according to the maximum correction amount of the maxillary and mandibular anterior teeth in the current treatment stage;

[0085] B3. If the maxillary and mandibular anterior teeth deformity pattern is the second deformity pattern, the maxillary anterior teeth are selected as the active adjustment anterior teeth in the current treatment stage;

[0086] B4. If the deformity pattern of the maxillary and mandibular anterior teeth is the third deformity pattern, the mandibular anterior teeth are selected as the active adjusted anterior teeth in the current treatment stage.

[0087] For the second and third deformity patterns, only the tilted side of the upper and lower front teeth is adjusted to avoid the orthodontic appliance exerting force on the non-tilted front teeth, thereby causing the originally non-tilted front teeth to become tilted.

[0088] Wherein, step B1 comprises:

[0089] Determine the maximum rotation of the maxillary and mandibular anterior teeth at the current stage of treatment based on physiological constraints;

[0090] If the deformity of the maxillary anterior teeth exceeds the maximum rotation of the maxillary anterior teeth, the maximum rotation of the maxillary anterior teeth is taken as the maximum correction of the maxillary anterior teeth in the current treatment stage; otherwise, the deformity of the maxillary anterior teeth is taken as the maximum correction of the maxillary anterior teeth in the current treatment stage;

[0091] If the deformity of the mandibular anterior teeth exceeds the maximum rotation of the mandibular anterior teeth, the maximum rotation of the mandibular anterior teeth is used as the maximum correction of the mandibular anterior teeth in the current treatment stage; otherwise, the deformity of the mandibular anterior teeth is used as the maximum correction of the mandibular anterior teeth in the current treatment stage.

[0092] Among them, the physiological constraints include the maximum angle correction rate of the maxillary anterior teeth (the unit is, for example, ° / month) and the maximum angle correction rate of the mandibular anterior teeth. The maximum angle correction rate of the maxillary anterior teeth and the maximum angle correction rate of the mandibular anterior teeth are multiplied by the time length of the current treatment stage to obtain the upper limit of the rotation of the maxillary anterior teeth and the upper limit of the rotation of the mandibular anterior teeth in the current treatment stage. Among them, the physiological constraints can be determined according to the basic information of the patient.

[0093] If the correction amount of the front teeth in the current treatment stage is set too large, resulting in exceeding the corresponding upper limit of rotation, it will not only make the orthodontic appliance uncomfortable to wear, but also easily cause tooth or jaw fractures. To avoid this situation, the upper limit of the rotation amount of the maxillary front teeth in the current treatment stage and the upper limit of the rotation amount of the mandibular front teeth in the current treatment stage can be multiplied by a redundancy coefficient greater than 0 and less than 1 (for example, 0.8, but not limited to this) as the maximum rotation amount of the maxillary front teeth in the current treatment stage and the maximum rotation amount of the mandibular front teeth in the current treatment stage.

[0094] If the deformity of the front teeth exceeds the corresponding maximum rotation amount, the corresponding maximum rotation amount is used as the maximum correction amount of the front teeth in the current treatment stage, so as to avoid excessive correction amount causing discomfort and tooth or jaw fracture. If the deformity of the front teeth does not exceed the corresponding maximum rotation amount, the corresponding deformity is directly used as the maximum correction amount of the front teeth in the current treatment stage, so as to avoid overcorrection and causing the front teeth to tilt in the opposite direction.

[0095] In some embodiments, step B2 comprises:

[0096] If the maximum correction amount of the maxillary anterior teeth and the mandibular anterior teeth in the current treatment stage does not exceed a first preset threshold value (which can be set according to actual needs), the maxillary anterior teeth and the mandibular anterior teeth are selected as the active adjustment anterior teeth in the current treatment stage;

[0097] If at least one of the maximum correction amounts of the maxillary anterior teeth and the mandibular anterior teeth in the current treatment stage exceeds a first preset threshold, the maxillary anterior teeth and the mandibular anterior teeth with the larger maximum correction amount are selected as the actively adjusted anterior teeth in the current treatment stage.

[0098] When the deformity mode of the maxillary and mandibular anterior teeth is the first deformity mode, the reaction force between the maxillary and mandibular anterior teeth acting on each other can enhance the correction force of each other. In order to ensure wearing comfort, it is necessary to first determine whether the maximum correction amount of the maxillary and mandibular anterior teeth in the current treatment stage is too large. If at least one is too large, only the one with the larger maximum correction amount is selected for correction in the current treatment stage to ensure comfort. Otherwise, the maxillary and mandibular anterior teeth are corrected at the same time in the current treatment stage to shorten the treatment cycle while ensuring comfort.

[0099] In step B3, in order to avoid tilting of the mandibular anterior teeth that were originally not tilted (uncontrolled labial inclination of the lower anterior teeth), only the maxillary anterior teeth can be selected as the active adjustment anterior teeth in the current treatment stage, so that only the maxillary anterior teeth are corrected in the current treatment stage.

[0100] Similarly, in step B4, in order to avoid tilting of the maxillary anterior teeth that were originally not tilted, only the mandibular anterior teeth are selected as the active adjustment anterior teeth in the current treatment stage, so that only the mandibular anterior teeth are corrected in the current treatment stage.

[0101] Among them, in step A202, the position of the tooth model of the actively adjusted front teeth is adjusted according to the maximum correction amount of the actively adjusted front teeth in the current treatment stage and the tilt direction of the actively adjusted front teeth. For example, if the actively adjusted front teeth are tilted toward the labial side, the position of the tooth model corresponding to the actively adjusted front teeth is adjusted toward the lingual side by the corresponding maximum correction amount; if the actively adjusted front teeth are tilted toward the lingual side, the position of the tooth model corresponding to the actively adjusted front teeth is adjusted toward the labial side by the corresponding maximum correction amount.

[0102] In fact, when the active adjustment of the anterior teeth includes the maxillary anterior teeth and the mandibular anterior teeth, if the maximum correction amount of the active adjustment of the anterior teeth in the current treatment stage is small, the force generated by the mandibular jaw position movement can be used to increase the correction force on the anterior teeth, thereby improving the correction efficiency. At this time, after step A202, the following steps are also included:

[0103] A203. If the actively adjusted anterior teeth include the maxillary anterior teeth and the mandibular anterior teeth and the maximum correction amount of the actively adjusted anterior teeth in the current treatment stage is less than the second preset threshold (which can be set according to actual needs), the mandibular digital model is moved along the inclination direction of the maxillary anterior teeth.

[0104] For example, if the maxillary anterior teeth tilt toward the labial side and the mandibular anterior teeth tilt toward the lingual side, the mandibular digital model is moved forward. After the patient wears the braces, the mandible moves forward, so that the mandibular joint will exert a traction force on the braces backward, thereby generating a force in the lingual direction on the maxillary anterior teeth and a reverse force in the labial direction on the mandibular anterior teeth (i.e., a reaction force in the labial direction), thereby increasing the corrective force on the maxillary and mandibular anterior teeth; similarly, if the maxillary anterior teeth tilt toward the lingual side and the mandibular anterior teeth tilt toward the labial side, the mandibular digital model is moved backward. After the patient wears the braces, the mandible moves backward, so that the mandibular joint will exert a traction force on the braces forward, thereby generating a force in the labial direction on the maxillary anterior teeth and a reverse force in the labial direction on the mandibular anterior teeth (i.e., a reaction force in the lingual direction), thereby increasing the corrective force on the maxillary and mandibular anterior teeth.

[0105] When the mandibular digital model is moved, the movement amount of the mandibular digital model can be determined according to the following method:

[0106] The maximum tolerable force of the maxillary and mandibular anterior teeth at the current stage of treatment is calculated according to the following formula:

[0107] ;

[0108] ;

[0109] in, is the maximum tolerable force of the maxillary anterior teeth at the current stage of treatment, is the maximum tolerable force of the mandibular anterior teeth at the current stage of treatment, is the maximum rotation of the maxillary anterior teeth in the current treatment stage, is the maximum rotation of the mandibular anterior teeth in the current treatment stage, , is the proportionality coefficient (which can be determined by looking up the table based on the patient's basic information);

[0110] The movement of the mandibular digital model is solved using the following formula:

[0111] ;

[0112] ;

[0113] ;

[0114] in, is the jaw position coefficient (which can be determined by looking up the table based on the patient's basic information), is the movement of the mandibular digital model, Silicone coefficient (can be obtained in advance through test data statistics), is the maximum correction of the maxillary anterior teeth in the current treatment stage, To estimate the forces acting on the maxillary anterior teeth, To estimate the forces acting on the mandibular anterior teeth, is the reaction force coefficient (which can be obtained in advance through test data statistics).

[0115] After the movement amount of the mandibular digital model is calculated, the mandibular digital model is moved according to the movement amount.

[0116] Specifically, step A3 includes:

[0117] A301. Generate the appliance base block model based on the target dental digital model;

[0118] A302. Using the target dental digital model, perform Boolean subtraction on the appliance base block model to form an upper alveolar and a lower alveolar, thereby obtaining an appliance main body model;

[0119] A303. According to the deformity pattern of the upper and lower anterior teeth, the part of the upper alveolar facing the maxillary anterior teeth and the part of the lower alveolar facing the mandibular anterior teeth are adjusted to generate the upper posterior alveolar, upper anterior alveolar, lower posterior alveolar and lower anterior alveolar.

[0120] Since the upper alveolar and the lower alveolar are generated by Boolean subtraction operation on the same orthodontic appliance base block model, the final orthodontic appliance model is integrated, thereby being able to transmit the interaction force between the upper and lower dentitions.

[0121] In step A301, the orthodontic appliance base block model may be generated by using existing technology, for example, the orthodontic appliance base block model may be generated by the following method:

[0122] The upper lingual edge contour line, the lower lingual edge contour line, the upper labial edge contour line, and the lower labial edge contour line are generated according to the target dental digital model (each edge contour line can be generated by using existing technology, which will not be described in detail here), the upper lingual edge contour line and the upper labial edge contour line are used as orbits to scan the upper surface, the lower lingual edge contour line and the lower labial edge contour line are used as orbits to scan the lower surface, the upper lingual edge contour line and the lower lingual edge contour line are used as orbits to scan the lingual side surface, and the upper labial edge contour line and the lower labial edge contour line are used as orbits to scan the labial side surface, the left ends of the upper surface, the lower surface, the lingual side surface, and the labial side surface are closed to obtain the left end surface, the right ends of the upper surface, the lower surface, the lingual side surface, and the labial side surface are closed to obtain the right end surface, and the upper surface, the lower surface, the lingual side surface, the labial side surface, the left end surface, and the right end surface are enclosed by the upper surface, the lower surface, the lingual side surface, the labial side surface, the left end surface, and the right end surface to form a solid body to obtain an orthodontic appliance base block model.

[0123] refer to Figure 7, is an exemplary orthodontic appliance base block model, wherein curve d1 is the upper edge contour line of the lingual side, curve d2 is the upper edge contour line of the labial side, curve d3 is the lower edge contour line of the lingual side, curve d4 is the lower edge contour line of the labial side, surface f3 is the upper surface, surface f4 is the lower surface, surface f1 is the lingual side surface, f2 is the labial side surface, f5 is the left end surface, and f6 is the right end surface.

[0124] Among them, in step A302, a Boolean subtraction operation is performed on the appliance base block model through the target jaw digital model, so that an upper alveolar adapted to the upper dentition is formed on the upper surface of the appliance base block model, and an upper alveolar adapted to the lower dentition is formed on the lower surface of the appliance base block model. At this time, the upper alveolar can be tightly fitted with the upper dentition of the target jaw digital model, and the lower upper alveolar can be tightly fitted with the lower dentition of the target jaw digital model.

[0125] Wherein, step A303 includes:

[0126] If the deformity pattern of the maxillary and mandibular anterior teeth is the first deformity pattern, the side wall of the upper alveolar facing the maxillary anterior teeth and facing away from the inclination direction of the maxillary anterior teeth is expanded outwards to form an upper posterior alveolar and an upper anterior alveolar, and the side wall of the lower alveolar facing the mandibular anterior teeth and facing away from the inclination direction of the mandibular anterior teeth is expanded outwards to form a lower posterior alveolar and a lower anterior alveolar;

[0127] If the deformity pattern of the maxillary and mandibular anterior teeth is the second deformity pattern, the side wall of the upper alveolar facing the maxillary anterior teeth and facing away from the inclination direction of the maxillary anterior teeth is expanded to form an upper posterior alveolar and an upper anterior alveolar, and the front and rear side walls of the lower alveolar facing the mandibular anterior teeth are expanded to form a lower posterior alveolar and a lower anterior alveolar;

[0128] If the deformity pattern of the maxillary and mandibular anterior teeth is the third deformity pattern, the side wall of the lower alveolar facing the mandibular anterior teeth and facing away from the inclination direction of the mandibular anterior teeth is expanded to form a lower posterior alveolar and a lower anterior alveolar, and the front and rear side walls of the upper alveolar facing the maxillary anterior teeth are expanded to form an upper posterior alveolar and an upper anterior alveolar.

[0129] For example, when the deformity pattern of the maxillary and mandibular anterior teeth is the first deformity pattern, if the maxillary anterior teeth are tilted toward the lingual side, the labial side wall of the upper alveolar teeth facing the maxillary anterior teeth is expanded outward; if the maxillary anterior teeth are tilted toward the labial side, the lingual side wall of the upper alveolar teeth facing the maxillary anterior teeth is expanded outward; similarly, the lower alveolar teeth are expanded outward.

[0130] When the deformity pattern of the maxillary and mandibular anterior teeth is the second deformity pattern, if the maxillary anterior teeth are tilted toward the lingual side, the labial side wall of the upper alveolar teeth facing the maxillary anterior teeth is expanded outward; if the maxillary anterior teeth are tilted toward the labial side, the lingual side wall of the upper alveolar teeth facing the maxillary anterior teeth is expanded outward; both the labial side wall and the lingual side wall of the lower alveolar teeth facing the mandibular anterior teeth are expanded outward.

[0131] When the mandibular anterior teeth deformity pattern is the third deformity pattern, if the mandibular anterior teeth are tilted toward the lingual side, the labial side wall of the lower alveolar teeth facing the mandibular anterior teeth is expanded outward; if the mandibular anterior teeth are tilted toward the labial side, the lingual side wall of the lower alveolar teeth facing the mandibular anterior teeth is expanded outward; both the labial side wall and the lingual side wall of the upper alveolar teeth facing the maxillary anterior teeth are expanded outward.

[0132] Among them, the outward expansion treatment refers to moving the side wall away from the alveolar cavity (the moving distance can be set according to actual needs). If the labial side wall is expanded, the labial side wall is moved toward the labial side. If the lingual side wall is expanded, the lingual side wall is moved toward the lingual side. Through the outward expansion treatment, the part of the upper alveolar cavity facing the maxillary anterior teeth forms an upper anterior alveolar cavity, the part of the lower alveolar cavity facing the mandibular anterior teeth forms a lower anterior alveolar cavity, the remaining part of the upper alveolar cavity serves as an upper posterior alveolar cavity, and the remaining part of the lower alveolar cavity serves as a lower posterior alveolar cavity. Thus, for the actively adjusted anterior teeth, the side walls of the corresponding anterior alveolar teeth (the upper anterior alveolar teeth and the lower anterior alveolar teeth are collectively referred to as the anterior alveolar teeth) facing the inclination direction of the actively adjusted anterior teeth can be against the actively adjusted anterior teeth to apply correction force, and a gap is left between the side walls of the corresponding anterior alveolar teeth opposite to the inclination direction of the actively adjusted anterior teeth and the actively adjusted anterior teeth as a space for the actively adjusted anterior teeth to rotate during the correction process, thereby improving the correction effect; for the non-actively adjusted anterior teeth (i.e., anterior teeth that do not serve as actively adjusted anterior teeth), the side walls of the corresponding anterior alveolar teeth do not abut against the non-actively adjusted anterior teeth, thereby not applying correction force to the non-actively adjusted anterior teeth; for the upper and lower posterior alveolar teeth, no outward expansion treatment is performed, thereby being able to still fit tightly with the corresponding posterior teeth, and under the anchoring action of the posterior teeth, ensuring that the integrated orthodontic appliance produces a relatively stable correction force on the anterior teeth.

[0133] refer to Figure 2 The present application provides a method for manufacturing an appliance for correcting upper and lower anterior teeth, comprising the steps of:

[0134] S1. Generate an integrated appliance model based on the appliance design method for correcting the upper and lower anterior teeth in the previous article;

[0135] S2. An appliance for correcting the upper and lower anterior teeth is prepared based on the integrated appliance model.

[0136] Among them, in step S2, the orthodontic appliance for correcting the upper and lower anterior teeth can be prepared by using a 3D printing process, an injection molding process, a machining process, or a combination of the first three processes. Preferably, the 3D printing process is adopted, which has lower production costs and is more suitable for customized production compared with the traditional method of first preparing a physical mold according to the orthodontic appliance model and then preparing the orthodontic appliance according to the physical mold.

[0137] Preferably, in step S2, a medical material is used to prepare an appliance for correcting upper and lower anterior teeth; the medical material includes at least one of liquid silicone, thermoplastic elastomer, TPU, TPE, polyurethane, nylon, and PETG.

[0138] refer to Figure 3 and Figure 4 The present application provides an appliance for correcting upper and lower anterior teeth, including an appliance body 300, the appliance body 300 having an upper posterior tooth socket 301 that can be fitted (tightly fitted) with the patient's maxillary posterior teeth, a lower posterior tooth socket 302 that can be fitted (tightly fitted) with the patient's mandibular posterior teeth, an upper anterior tooth socket 303 for applying a corrective force to the patient's maxillary anterior teeth, and a lower anterior tooth socket 304 for applying a corrective force to the patient's mandibular anterior teeth; the appliance for correcting upper and lower anterior teeth is manufactured by the manufacturing method of the appliance for correcting upper and lower anterior teeth as described above.

[0139] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for designing an appliance for correcting the upper and lower front teeth, which is used to design an appliance for a patient who needs to correct the position of the upper and lower front teeth, and is characterized in that: Includes steps: A1. Obtaining the patient's initial dental digital model and the patient's upper and lower jaw anterior tooth deformity pattern; A2. According to the upper and lower anterior teeth deformity pattern, the upper and lower anterior teeth models in the initial jaw digital model are adjusted in position, and the upper and lower posterior teeth models are kept in position unchanged to obtain a target jaw digital model; A3. Generate an integrated orthodontic appliance model according to the upper and lower jaw anterior teeth deformity pattern and the target jaw digital model, so that the integrated orthodontic appliance model has an upper posterior tooth alveolus that can be engaged with the patient's maxillary posterior teeth, a lower posterior tooth alveolus that can be engaged with the patient's mandibular posterior teeth, an upper anterior tooth alveolus for applying a correction force to the patient's maxillary anterior teeth, and a lower anterior tooth alveolus for applying a correction force to the patient's mandibular anterior teeth; The upper and lower jaw anterior teeth deformity patterns include a first deformity pattern, a second deformity pattern and a third deformity pattern; The first deformity pattern is that both the maxillary anterior teeth and the mandibular anterior teeth are tilted, and the tilt directions of the maxillary anterior teeth and the mandibular anterior teeth are opposite; The second deformity pattern is that only the maxillary anterior teeth are tilted; The third deformity pattern is that only the mandibular anterior teeth are tilted; If the patient's maxillary and mandibular anterior teeth deformity pattern is the first deformity pattern, the reaction force on the mandibular anterior teeth generated by the correction force of the maxillary anterior teeth at the mandibular anterior teeth is in the same direction as the correction force required for the mandibular anterior teeth, and the reaction force on the maxillary anterior teeth generated by the correction force of the mandibular anterior teeth at the maxillary anterior teeth is in the same direction as the correction force required for the maxillary anterior teeth; If the patient's maxillary and mandibular anterior teeth deformity pattern is the second deformity pattern or the third deformity pattern, the corrective force of the maxillary anterior teeth or the mandibular anterior teeth generates a reaction force acting on the maxillary and mandibular posterior teeth at the maxillary and mandibular posterior teeth. Under the anchoring action of the maxillary and mandibular posterior teeth, the corrective force applied to the maxillary and mandibular anterior teeth remains stable.

2. The method for designing an appliance for correcting upper and lower anterior teeth according to claim 1, characterized in that: Step A2 includes: A201. Selecting the active adjustment front teeth for the current treatment stage from the maxillary front teeth and the mandibular front teeth according to the maxillary front teeth deformity pattern and the deformity amount of the maxillary front teeth and the mandibular front teeth of the patient; A202. Adjust the position of the tooth model for actively adjusting the front teeth.

3. The method for designing an appliance for correcting upper and lower anterior teeth according to claim 2, characterized in that: Step A201 includes: B1. Determine the maximum amount of correction of the maxillary anterior teeth and the mandibular anterior teeth at the current treatment stage according to the amount of deformity of the maxillary anterior teeth and the mandibular anterior teeth of the patient; B2. If the maxillary and mandibular anterior teeth deformity pattern is the first deformity pattern, then according to the maximum correction amount of the maxillary and mandibular anterior teeth in the current treatment stage, the active adjustment anterior teeth in the current treatment stage are selected from the maxillary and mandibular anterior teeth; B3. If the maxillary and mandibular anterior teeth deformity pattern is the second deformity pattern, the maxillary anterior teeth are selected as the actively adjusted anterior teeth in the current treatment stage; B4. If the deformity pattern of the upper and lower jaw anterior teeth is the third deformity pattern, the lower jaw anterior teeth are selected as the actively adjusted anterior teeth in the current treatment stage.

4. The method for designing an appliance for correcting upper and lower anterior teeth according to claim 3, characterized in that: Step B1 includes: Determine the maximum rotation of the maxillary and mandibular anterior teeth at the current stage of treatment based on physiological constraints; If the deformity of the maxillary anterior teeth exceeds the maximum rotation amount of the maxillary anterior teeth, the maximum rotation amount of the maxillary anterior teeth is used as the maximum correction amount of the maxillary anterior teeth in the current treatment stage; otherwise, the deformity of the maxillary anterior teeth is used as the maximum correction amount of the maxillary anterior teeth in the current treatment stage; If the deformity of the mandibular anterior teeth exceeds the maximum rotation amount of the mandibular anterior teeth, the maximum rotation amount of the mandibular anterior teeth is taken as the maximum correction amount of the mandibular anterior teeth in the current treatment stage; otherwise, the deformity of the mandibular anterior teeth is taken as the maximum correction amount of the mandibular anterior teeth in the current treatment stage.

5. The method for designing an appliance for correcting upper and lower anterior teeth according to claim 4, characterized in that: After step A202, the method further includes the following steps: A203. If the actively adjusted anterior teeth include the maxillary anterior teeth and the mandibular anterior teeth and the maximum correction amount of the actively adjusted anterior teeth in the current treatment stage is less than the second preset threshold, the mandibular digital model is moved along the inclination direction of the maxillary anterior teeth.

6. The method for designing an appliance for correcting upper and lower anterior teeth according to claim 1, characterized in that: Step A3 includes: A301. Generate an appliance base block model according to the target dental digital model; A302. Using the target dental digital model to perform Boolean subtraction on the appliance base block model to form an upper alveolar and a lower alveolar, thereby obtaining an appliance main body model; A303. According to the upper and lower mandibular anterior teeth deformity pattern, the portion of the upper alveolar facing the maxillary anterior teeth and the portion of the lower alveolar facing the mandibular anterior teeth are adjusted to generate the upper posterior alveolar, the upper anterior alveolar, the lower posterior alveolar and the lower anterior alveolar.

7. The method for designing an appliance for correcting upper and lower anterior teeth according to claim 6, characterized in that: Step A303 includes: If the upper and lower jaw anterior teeth deformity pattern is the first deformity pattern, the side wall of the upper alveolar facing the upper anterior teeth and facing away from the inclination direction of the maxillary anterior teeth is expanded outwards, so that the upper alveolar forms the upper posterior alveolar and the upper anterior alveolar, and the side wall of the lower alveolar facing the mandibular anterior teeth and facing away from the inclination direction of the mandibular anterior teeth is expanded outwards, so that the lower alveolar forms the lower posterior alveolar and the lower anterior alveolar; If the upper and lower jaw anterior teeth deformity pattern is the second deformity pattern, the side wall of the upper alveolar facing the upper jaw anterior teeth and facing away from the inclination direction of the maxillary anterior teeth is expanded outwards, so that the upper alveolar forms the upper posterior alveolar and the upper anterior alveolar, and the front and rear side walls of the lower alveolar facing the mandibular anterior teeth are expanded outwards, so that the lower alveolar forms the lower posterior alveolar and the lower anterior alveolar; If the deformity pattern of the upper and lower mandibular anterior teeth is the third deformity pattern, the side walls of the lower alveolar facing the mandibular anterior teeth and facing away from the inclination direction of the mandibular anterior teeth are expanded outward so that the lower alveolar forms the lower posterior alveolar and the lower anterior alveolar, and the front and rear side walls of the upper alveolar facing the maxillary anterior teeth are expanded outward so that the upper alveolar forms the upper posterior alveolar and the upper anterior alveolar.

8. A method for manufacturing an appliance for correcting upper and lower anterior teeth, characterized in that: Includes steps: S1. Generate an integrated appliance model based on the appliance design method for correcting upper and lower anterior teeth according to any one of claims 1 to 7; S2. Prepare an appliance for correcting the upper and lower anterior teeth according to the integrated appliance model.

9. An appliance for correcting upper and lower front teeth, comprising an appliance body, characterized in that: The orthodontic appliance body comprises an upper posterior alveolar assembly capable of engaging with the patient's maxillary posterior teeth, a lower posterior alveolar assembly capable of engaging with the patient's mandibular posterior teeth, an upper anterior alveolar assembly for applying a corrective force to the patient's maxillary anterior teeth, and a lower anterior alveolar assembly for applying a corrective force to the patient's mandibular anterior teeth; the orthodontic appliance for correcting upper and lower mandibular anterior teeth is manufactured by the manufacturing method of an orthodontic appliance for correcting upper and lower mandibular anterior teeth as described in claim 8.

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