Activator and manufacturing method therefor

Abstract

An activator, comprising an upper jaw portion (1) and a lower jaw portion (2). The upper jaw portion (1) and the lower jaw portion (2) are connected by means of a connecting portion (3). The upper jaw portion (1), the lower jaw portion (2), and the connecting portion (3) are integrally manufactured. The upper jaw portion (1) at least covers maxillary anterior teeth, and the lower jaw portion (2) at least covers mandibular anterior teeth. The manufacturing method for the activator is a 3D printing method.

Description

A muscle agonist and its manufacturing method Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a muscle agonist and its manufacturing method. Background Technology

[0002] The muscle activator was designed by Andresen in 1908, hence also known as the Andresen appliance. It has undergone continuous improvement and refinement through long-term clinical application, primarily used to correct Angle Class II malocclusion during the peak of puberty. The muscle activator controls tooth eruption while simultaneously moving the mandible forward, thereby adjusting the sagittal relationship between the maxilla and mandible. The muscle activator can also be used to treat Angle Class III Division 2, Angle Class III, and open bite malocclusion, but is not suitable for Angle Class I cases of crowding or maxillary protrusion.

[0003] The existing muscle activator consists primarily of a plastic base, lacking specific retention devices and force-applying mechanisms. The maxillary portion of the base can cover the entire hard palate (or not), extending distal to the first permanent molar; the mandibular portion extends downwards to the floor of the mouth, with the posterior portion reaching distal to the lingual surface of the mandibular molars. The maxillary and mandibular portions of the base connect to form a plastic cap for the mandibular incisors in the anterior region, guiding mandibular anterior movement and preventing vertical eruption of the mandibular incisors. The degree to which the plastic cap covers the mandibular incisors determines their movement pattern. If the plastic cap covers more than one-third of the length of the mandibular incisor crown, it prevents labial tilting of the mandibular anterior teeth caused by the muscle activator; if the coverage is less than one-third of the mandibular incisor crown, it can lead to labial tilting of the mandibular anterior teeth after orthodontic treatment.

[0004] To further enhance control over the upper anterior teeth, traditional muscle activators also use a standard double-curved labial arch made of 0.9-1.0 mm diameter hard stainless steel wire. This labial arch can transmit the corrective force of the muscles to the upper anterior teeth. If the base of the palatal alveolar portion of the upper anterior teeth is adjusted and cushioned, the upper anterior teeth will tilt and move palatally under the influence of the labial arch.

[0005] Existing methods for manufacturing muscle agonists include the following steps:

[0006] (1) Making a plaster model;

[0007] (2) Draw the guide lines for the lip arch and palatal arch;

[0008] (3) Use wax to leave space for the growth of mandibular teeth;

[0009] (4) Bend the labial arch and palatal arch;

[0010] (5) Create wax models of the baseplate edges;

[0011] (6) Immersion model;

[0012] (7) Apply self-curing base resin;

[0013] (8) Polishing and grinding after solidification;

[0014] Existing muscle agonists have the following drawbacks:

[0015] (1) Structural defects

[0016] A. Poor retention. Traditional muscle activators themselves have no retention effect; they rely solely on the interaction between the mandible and the muscle activator to achieve retention.

[0017] B. Poor control over teeth. Traditional muscle activators have no control over the retraction of the upper anterior teeth and require the use of a double-curved labial arch to achieve further control over the upper anterior teeth. The bending process of the double-curved labial arch is complicated, which further increases the manufacturing cost of the muscle activator.

[0018] (2) Defects in manufacturing method: The traditional method of manufacturing muscle activators is very complicated, involving multiple processes, and is time-consuming, costly and difficult to replace. Summary of the Invention

[0019] To overcome the above-mentioned defects, the present invention aims to provide a muscle stimulator and its manufacturing method, which can enhance the retention effect, achieve direct control over the movement of the upper anterior teeth, and greatly simplify the manufacturing process of the muscle stimulator.

[0020] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0021] First, structurally, the present invention discloses a muscle activator, including an upper jaw portion and a lower jaw portion, wherein the upper jaw portion and the lower jaw portion are connected by a connecting portion, and the upper jaw portion, the lower jaw portion and the connecting portion are integrally manufactured;

[0022] The maxillary portion covers at least the maxillary anterior teeth, and the mandibular portion covers at least the mandibular anterior teeth.

[0023] As a preferred embodiment, the maxillary portion includes clinical crowns A corresponding one-to-one with the upper anterior teeth or the entire maxillary dentition, and the mandibular portion includes clinical crowns B corresponding to the lower anterior teeth or the entire mandibular dentition;

[0024] The inner wall of clinical crown A fits against the outer wall of the corresponding upper tooth, and the inner wall of clinical crown B fits against the outer wall of the corresponding lower anterior tooth.

[0025] As another preferred embodiment, the maxillary portion includes clinical crowns A corresponding one-to-one with the upper anterior teeth or the entire maxillary dentition, and the mandibular portion includes clinical crowns B corresponding to the lower anterior teeth or the entire mandibular dentition;

[0026] The muscle activator leaves a gap between the clinical crown A and the corresponding upper tooth and / or between the clinical crown B and the corresponding lower tooth to facilitate the movement of the upper and / or lower teeth.

[0027] As a preferred embodiment, the connection portion is a stress-dispersing structure, which can be one of the following three types:

[0028] Method 1: The clinical crown B corresponding to the lower anterior tooth is connected to the nearest clinical crown A through a connecting rod and / or connected to the two nearest clinical crowns A through two connecting rods respectively, and the adjacent connecting rods are not parallel;

[0029] Method 2: All clinical crowns B are connected to the nearest clinical crown A by a connecting rod and / or connected to the two nearest clinical crowns A by two connecting rods respectively, with adjacent connecting rods not parallel;

[0030] Method 3: The stress dispersion structure is a hollow structure.

[0031] As another preferred embodiment, the connecting part is an integral structure, with the bottom of the connecting part connected to the top of the clinical crown B corresponding to the mandibular anterior tooth and the occlusal surface of the clinical crown B corresponding to the mandibular posterior tooth, and the top of the connecting part connected to the bottom of the clinical crown A of the maxillary anterior tooth and the occlusal surface of the clinical crown A of the maxillary posterior tooth.

[0032] As a preferred embodiment, the maxillary portion and the mandibular portion are positioned such that the incisal edges of the maxillary and mandibular dentitions are aligned, and the vertical distance between the maxillary and mandibular dentitions is adjustable.

[0033] As another preferred embodiment, the maxillary portion and the mandibular portion are positioned such that the mandibular body is moved forward a predetermined distance.

[0034] Furthermore, the clinical crowns A and B corresponding to the canines are provided with rectangular attachments for retention.

[0035] Preferably, the maxillary portion, mandibular portion, and connecting portion are all made of resin, preferably flexible resin.

[0036] Secondly, regarding the manufacturing method, the manufacturing method of the muscle agonist disclosed in this invention includes 3D printing, casting, hot pressing, or injection molding.

[0037] 3D printing includes the following steps performed in sequence:

[0038] s1. Establish a digital oral model: Based on the patient's oral data, reconstruct a digital three-dimensional model of the patient's oral cavity;

[0039] s2. Generate a digital treatment plan: In the digital plan, the digital three-dimensional model is used to simulate the movement of the mandible, so that the mandible is moved forward to the incision-to-incision position to obtain the target position oral cavity model;

[0040] s3, Generating a muscle agonist model:

[0041] Use one of the following methods:

[0042] Method 1: Based on the target oral cavity model, generate the maxillary part of the muscle agonist model that wraps around the maxillary dentition and the mandibular part of the muscle agonist model that wraps around the mandibular anterior teeth, and derive the muscle agonist model.

[0043] Method 2: Based on the target oral cavity model, generate the maxillary part of the muscle agonist model that wraps around the maxillary dentition and the mandibular part of the muscle agonist model that wraps around the mandibular anterior teeth. Use CAD modeling technology to design the connecting part in the middle of the maxillary and mandibular parts of the muscle agonist. Merge the maxillary part, connecting part and mandibular part of the muscle agonist model into an integrated model and derive the muscle agonist model.

[0044] s4. Printing: Based on the muscle agonist model, the muscle agonist is printed using resin material through photopolymerization 3D printing technology;

[0045] For the muscle agonist model generated by method 1, after printing, a self-curing resin is used to make the connecting part, and the maxillary and mandibular parts of the muscle agonist are bonded together.

[0046] Furthermore, in step s2, the reconstructed digital three-dimensional model of the patient's oral cavity includes a digital tooth arrangement design for orthodontic treatment that increases tooth movement.

[0047] Preferably, in step s1, the patient's oral cavity data is CBCT and / or oral cavity scan data.

[0048] Furthermore, in step s3, the connecting area between the maxillary portion, the connecting portion, and the mandibular portion is smoothed.

[0049] The beneficial effects of this invention are as follows:

[0050] 1. Stronger retention effect: Traditional muscle activators themselves have no retention effect and rely solely on the interaction between the upper and lower jaws and the muscle activator to achieve retention. However, the muscle activator involved in this invention can achieve a complete fit with the crown, and achieves a better retention effect through the structure of the orthodontic appliance.

[0051] 2. Direct control of anterior tooth movement: Traditional muscle activators require the use of guide wires to bend the double-curved labial arch in order to transmit force to the anterior teeth. However, the muscle activator involved in this invention completely encloses the clinical crown of the anterior teeth, and can control the labial and lingual movement of the anterior teeth without the use of guide wires.

[0052] 3. Stronger restriction on mandibular position: Traditional designs have limited restriction on the lower anterior teeth, leaving room for mandibular movement. This invention, by wrapping the lower anterior teeth, completely fixes the position of the upper and lower jaws, thus providing better restriction on mandibular position.

[0053] 4. This invention can control the vertical height of the maxillary and mandibular posterior teeth. Different implementation methods can be adopted to meet the needs of vertical control of posterior teeth in cases with high angle, low angle, and even angle.

[0054] 5. This invention, through its stress-dispersing structure, reduces intermaxillary forces, providing a gentler traction force for mandibular advancement. Traditional muscle activators, to prevent excessive traction during mandibular advancement, require the advancement process to be designed as multiple steps, each step moving a certain distance. However, this patent, through the gentle traction force provided by stress dispersion, allows for a significantly larger mandibular advancement amount, effectively improving treatment efficiency.

[0055] 6. It greatly simplifies the manufacturing process of muscle agonists. Muscle agonists made by direct 3D printing can be molded into one piece after design, which is much simpler than the traditional manual manufacturing method.

[0056] 7. Simultaneous orthodontic treatment is possible. This direct 3D printed muscle activator can be designed to be combined with the tooth alignment plan. While achieving mandibular advancement and controlling tooth eruption, it can also achieve tooth movement for orthodontic treatment. Attached Figure Description

[0057] Figure 1 is a schematic diagram of the structure of Example 1.

[0058] Figure 2 is a left view of Figure 1.

[0059] Figure 3 is a schematic diagram of the structure of Example 2.

[0060] Figure 4 is a structural schematic diagram of Example 3.

[0061] Figure 5 is a structural schematic diagram of Example 4.

[0062] Figure 6 is a structural schematic diagram of Example 5.

[0063] Figure 7 is a structural schematic diagram of Example 6.

[0064] Figure 8 is a structural schematic diagram of Example 7.

[0065] Figure 9 is a schematic diagram of the displacement in digital tooth arrangement design for orthodontic treatment that increases tooth movement. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings.

[0067] Example 1

[0068] This embodiment discloses a muscle activator, as shown in Figures 1 and 2, and the details are as follows:

[0069] This embodiment can use resin material similar to or exactly the same as that used in clinical invisible aligners and retainers, and be molded in one piece without the need for other connecting materials or manufacturing processes.

[0070] Its structure is an integrated upper and lower jaw. The upper jaw portion 1 covers the entire upper dentition, including clinical crowns A11 that correspond one-to-one with the upper dentition, extending to the distal end of the molars. The inner wall of clinical crown A11 is in close contact with the outer wall of the upper dentition. The lower jaw portion 2 covers the lower anterior teeth region, namely the central incisors, lateral incisors, and canines. The lower jaw portion 2 includes clinical crowns B21 that correspond one-to-one with the lower anterior teeth. The inner wall of clinical crown B21 is in close contact with the outer wall of the lower anterior teeth.

[0071] The maxillary portion 1 and the mandibular portion 2 are positioned such that the incisal edges of the maxillary dentition and the incisal edges of the mandibular dentition are directly opposite each other.

[0072] The connecting part 3 is a stress-dispersing structure. In this embodiment, the stress-dispersing structure is as follows: the clinical crown B21 is connected to the clinical crown A closest to itself through a connecting rod 31 and / or connected to the two clinical crowns A11 closest to itself through two connecting rods 31 respectively. The adjacent connecting rods 31 are not parallel.

[0073] The resin material can be either hard resin or flexible resin; alternatively, the upper jaw part 1 and the lower jaw part 2 can be made of hard resin, while the connecting part 3 can be made of flexible resin.

[0074] In this embodiment, the mandibular portion 2 is designed in a forward and downward protruding position, that is, the mandibular anterior teeth region is positioned directly opposite the incisal direction of the maxillary anterior teeth region. The maxillary portion 1 is designed to indent the maxillary anterior teeth. Since it completely encloses the maxillary dentition, the maxillary portion 1 can be used to guide the mandibular anterior movement. The reaction force generated during the mandibular anterior movement is applied to the maxillary arch through a muscle activator, generating an inward retraction force on the maxillary anterior teeth, thereby achieving the therapeutic effect of mandibular anterior movement and maxillary anterior tooth indentation and retraction.

[0075] The maxillary anterior and posterior teeth and the lower anterior teeth are completely covered by the muscle agonist. Under the action of the closing muscles, the upper and lower anterior teeth tend to be maintained or indented, while the lower posterior teeth are not covered, which facilitates natural elongation and achieves open bite.

[0076] This embodiment is mainly applicable to clinical cases where the treatment aims to raise the posterior teeth and guide the mandible forward, such as low-angle cases.

[0077] Example 2

[0078] This embodiment discloses a muscle activator, as shown in Figure 3. The difference between this embodiment and embodiment 1 is that the mandibular portion 2 is provided. In this embodiment, the mandibular portion 2 covers the entire mandibular dentition. The mandibular portion 2 is provided with clinical crowns B21 that correspond one-to-one with the entire mandibular dentition and extends to the distal end of the molar.

[0079] In this embodiment, the mandibular portion 2 is designed to level the occlusal curve, achieving alignment while the mandible moves forward. The maxillary portion 1 is designed to indent the upper anterior teeth. Since it completely encloses the maxillary dentition, the maxillary portion 1 can be used to guide the mandibular movement forward. The reaction force generated during the mandibular movement forward is applied to the upper dental arch through a muscle activator, generating an inward force on the upper anterior teeth, thereby achieving the therapeutic effect of mandibular movement forward and upper anterior tooth retraction.

[0080] At this point, both the upper and lower anterior and posterior teeth are wrapped by the mandibular part of the muscle activator, and there is an interactive connection 3. Under the action of the closing muscles, the height of the posterior teeth can be maintained. At the same time, the tooth movement of the Spee curve, which is set in the appliance to depress the upper anterior teeth and level the mandibular occlusion, can achieve the effect of reverse rotation of the upper occlusal plane, leveling of the lower occlusal plane, and finally opening the bite and reverse rotation of the mandible.

[0081] This embodiment is mainly applicable to clinical cases with high angles where the treatment aims to reverse the maxillary plane, level the mandibular Spee curve, reverse the mandible, and guide the mandible forward.

[0082] The other parts of this embodiment are the same as those in Embodiment 1, so they will not be described again.

[0083] Example 3

[0084] This embodiment discloses a muscle activator, as shown in Figure 4. The difference between this embodiment and embodiment 2 lies in the stress dispersion structure. In this embodiment, only the clinical crown B21 corresponding to the lower anterior tooth is connected to the corresponding clinical crown A11 through the connecting rod 31.

[0085] Maxillary component 1 is designed to depress the upper anterior teeth. Since it completely covers the maxillary dentition, maxillary component 1 can be used to guide the mandibular anterior movement. The reaction force generated during the mandibular anterior movement is applied to the upper dental arch through a muscle activator, which in turn generates an inward force on the upper anterior teeth, thereby achieving the therapeutic effect of overall mandibular anterior movement and maxillary anterior tooth retraction.

[0086] At this time, both the mandibular anterior and posterior teeth are wrapped by the mandibular part of the muscle activator. Since the connecting part is located between the upper and lower anterior teeth, the upper and lower anterior teeth tend to be maintained or depressed under the action of the closing muscles. The teeth move to level the longitudinal occlusal curve of the upper and lower jaws by setting inside the appliance.

[0087] This embodiment is mainly applicable to clinical cases where the anterior teeth are indented and the posterior teeth are elongated, and the mandible needs to be guided forward for treatment purposes, such as cases with equal angles.

[0088] The other parts of this embodiment are the same as those in Embodiment 2, so they will not be described again.

[0089] Example 4

[0090] This embodiment discloses a muscle activator, as shown in Figure 5. The difference between this embodiment and Embodiment 1 is that the maxillary portion 1 only covers the maxillary anterior teeth. The maxillary portion 1 has only clinical crowns A11 that correspond one-to-one with the maxillary anterior teeth. The maxillary and mandibular posterior teeth do not contact each other, which can promote the eruption of the maxillary and mandibular posterior teeth.

[0091] The other parts of this embodiment are the same as those in Embodiment 1, so they will not be described again.

[0092] Example 5

[0093] The muscle agonist disclosed in this embodiment differs from embodiments 1, 2, or 3 in the positional relationship between the maxillary portion 1 and the mandibular portion 2. In this embodiment, the maxillary portion 1 and the mandibular portion 2 are positioned to move the entire mandible forward by a predetermined distance.

[0094] In this embodiment, multiple identical muscle activators can be configured with different predetermined distances, as shown in Figure 6. The mandibular anterior movement is divided into multiple steps, and each muscle activator is set with a certain amount of mandibular anterior movement until the incisal edge of the maxillary dentition is aligned with the incisal edge of the mandibular dentition.

[0095] Example 6

[0096] As shown in Figure 7, the muscle stimulator disclosed in this embodiment differs from embodiments 1, 2, 3, 4 or 5 in that: the clinical crowns A11 and B21 corresponding to the canines are provided with rectangular attachments 4 for retention. This embodiment is for patients with shorter crowns and can prevent the muscle stimulator from falling off.

[0097] Example 7

[0098] As shown in Figure 8, the muscle activator disclosed in this embodiment differs from the above embodiment in that the connecting part 3 is an integral structure. The bottom of the connecting part 3 is connected to the top of the clinical crown B21 corresponding to the lower anterior tooth, and the top of the connecting part 3 is connected to the bottom of the partial clinical crown A11.

[0099] Example 8

[0100] The muscle activator disclosed in the above embodiments can assist in depressing the anterior teeth by adding traction hooks or buccal tubes of the extraoral arch to the canines when dealing with patients with severe high-angle conditions requiring implants and extraoral traction.

[0101] Example 9

[0102] This embodiment discloses a 3D printing method applicable to the muscle agonist disclosed in the above embodiment, including the following steps:

[0103] s1. Establish a digital oral model: Based on the patient's oral data, reconstruct a digital three-dimensional model of the patient's oral cavity; in this embodiment, the patient's oral data uses CBCT and / or oral scan data.

[0104] s2. Generate a digital treatment plan: In the digital plan, the digital three-dimensional model is used to simulate the movement of the mandible, so that the mandible is moved forward to the incision-to-incision position to obtain the target position oral cavity model;

[0105] s3, Generating a muscle agonist model:

[0106] Use one of the following methods:

[0107] Method 1: Based on the target oral cavity model, generate the maxillary part of the muscle agonist model that wraps around the maxillary dentition and the mandibular part of the muscle agonist model that wraps around the mandibular anterior teeth, and derive the muscle agonist model.

[0108] Method 2: Based on the target oral cavity model, generate the maxillary part of the muscle agonist model that wraps around the maxillary dentition and the mandibular part of the muscle agonist model that wraps around the mandibular anterior teeth. Use CAD modeling technology to design the connecting part between the maxillary and mandibular parts of the muscle agonist. Integrate the maxillary part, connecting part and mandibular part of the muscle agonist model into an integrated model. Smooth the connecting area between the maxillary part, connecting part and mandibular part to export the muscle agonist model.

[0109] s4. Printing: Based on the muscle agonist model, the muscle agonist is printed using resin material through photopolymerization 3D printing technology;

[0110] For the muscle agonist model generated by method 1, after printing, a self-curing resin is used to make the connecting part, and the maxillary and mandibular parts of the muscle agonist are bonded together.

[0111] As shown in Figure 9, as an application example, the digital treatment plan described in step S2 can be enhanced with digital tooth arrangement design for orthodontic treatment involving tooth movement, thereby achieving both invisible orthodontic treatment and functional treatment.

[0112] In addition to the 3D printing method disclosed in this embodiment, similar molding methods such as casting, hot pressing, and injection molding can also be used as production means.

[0113] As an example, dual-material 3D printing technology can be used, where the crown covering part uses hard resin to provide stable support with moderate hardness to ensure good retention, and the connecting part uses flexible material or elastic photosensitive resin material with low elastic modulus and hardness to improve wearing comfort.

[0114] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A muscle activator, characterized in that, It includes an upper jaw portion and a lower jaw portion, which are connected by a connecting portion, and the upper jaw portion, lower jaw portion and connecting portion are manufactured as a single piece; The maxillary portion covers at least the maxillary anterior teeth, and the mandibular portion covers at least the mandibular anterior teeth.

2. The muscle agonist according to claim 1, characterized in that, The maxillary portion includes clinical crowns A corresponding one-to-one with the upper anterior teeth or the entire maxillary dentition, and the mandibular portion includes clinical crowns B corresponding to the lower anterior teeth or the entire mandibular dentition; The inner wall of clinical crown A fits against the outer wall of the corresponding upper tooth, and the inner wall of clinical crown B fits against the outer wall of the corresponding lower anterior tooth.

3. The muscle agonist according to claim 1, characterized in that, The maxillary portion includes clinical crowns A corresponding one-to-one with the upper anterior teeth or the entire maxillary dentition, and the mandibular portion includes clinical crowns B corresponding to the lower anterior teeth or the entire mandibular dentition; The muscle activator leaves a gap between the clinical crown A and the corresponding upper tooth and / or between the clinical crown B and the corresponding lower tooth to facilitate the movement of the upper and / or lower teeth.

4. The muscle agonist according to claim 2 or 3, characterized in that, The connecting part is a stress-dispersing structure, and the stress-dispersing structure can be one of the following three types: Method 1: The clinical crown B corresponding to the lower anterior tooth is connected to the nearest clinical crown A through a connecting rod and / or connected to the two nearest clinical crowns A through two connecting rods respectively, and the adjacent connecting rods are not parallel; Method 2: All clinical crowns B are connected to the nearest clinical crown A by a connecting rod and / or connected to the two nearest clinical crowns A by two connecting rods respectively, with adjacent connecting rods not parallel; Method 3: The stress dispersion structure is a hollow structure.

5. The muscle agonist according to claim 2 or 3, characterized in that, The connecting part is an integral structure. The bottom of the connecting part is connected to the top of the clinical crown B corresponding to the mandibular anterior tooth and the occlusal surface of the clinical crown B corresponding to the mandibular posterior tooth. The top of the connecting part is connected to the bottom of the clinical crown A of the maxillary anterior tooth and the occlusal surface of the clinical crown A of the maxillary posterior tooth.

6. The muscle agonist according to claim 4, characterized in that, The maxillary portion and mandibular portion are positioned such that the incisal edges of the maxillary and mandibular dentitions are aligned, and the vertical distance between the maxillary and mandibular dentitions is adjustable.

7. The muscle agonist according to claim 4, characterized in that, The maxillary portion and the mandibular portion are positioned to move the entire mandible forward a predetermined distance.

8. The muscle agonist according to claim 2 or 3, characterized in that, Clinical crowns A and B, corresponding to the canines, are equipped with rectangular attachments for retention.

9. The muscle agonist according to claim 1, characterized in that, The maxillary portion, mandibular portion, and connecting portion are all made of resin, preferably flexible resin.

10. A method for manufacturing the muscle agonist as described in claim 2, characterized in that, The manufacturing method is 3D printing, casting, hot pressing, or injection molding.

11. The manufacturing method according to claim 9, characterized in that, The 3D printing process includes the following steps performed in sequence: s1. Establish a digital oral model: Based on the patient's oral data, reconstruct a digital three-dimensional model of the patient's oral cavity; s2. Generate a digital treatment plan: In the digital plan, the digital three-dimensional model is used to simulate the movement of the mandible, so that the mandible is moved forward to the incision-to-incision position to obtain the target position oral cavity model; s3, Generating a muscle agonist model: Use one of the following methods: Method 1: Based on the target oral cavity model, generate the maxillary part of the muscle agonist model that wraps around the maxillary dentition and the mandibular part of the muscle agonist model that wraps around the mandibular anterior teeth, and derive the muscle agonist model. Method 2: Based on the target oral cavity model, generate the maxillary part of the muscle agonist model that wraps around the maxillary dentition and the mandibular part of the muscle agonist model that wraps around the mandibular anterior teeth. Use CAD modeling technology to design the connecting part in the middle of the maxillary and mandibular parts of the muscle agonist. Merge the maxillary part, connecting part and mandibular part of the muscle agonist model into an integrated model and derive the muscle agonist model. s4. Printing: Based on the muscle agonist model, the muscle agonist is printed using resin material through photopolymerization 3D printing technology; For the muscle agonist model generated by method 1, after printing, a self-curing resin is used to make the connecting part, and the maxillary and mandibular parts of the muscle agonist are bonded together.

12. The manufacturing method according to claim 11, characterized in that, In step s2, the reconstructed digital three-dimensional model of the patient's oral cavity includes a digital tooth arrangement design for orthodontic treatment that increases tooth movement.

13. The manufacturing method according to claim 10, characterized in that, In step s1, the patient's oral cavity data is CBCT and / or oral cavity scan data.

14. The manufacturing method according to claim 10, characterized in that, In step s3, the connecting areas between the maxillary portion, the connecting portion, and the mandibular portion are smoothed.

Images