Correcting appliance for adjusting jaw position relation based on simulated tooth tips and preparation method

Abstract

The invention discloses an appliance for adjusting a jaw position relation based on simulated tooth tips and a preparation method, and relates to the technical field of medical instruments. The appliance comprises a simulated tooth tip assembly fixed on a tooth occlusal surface, and the simulated tooth tip assembly comprises a plurality of simulated tooth tips arranged on teeth in a back tooth area. Each simulation tooth tip comprises a guide surface arranged in the front area of a simulation tooth tip body, a bearing surface arranged in the rear area of the simulation tooth tip body and a compensation surface matched with an occlusal surface, the guide surfaces guide jaw teeth, so that the upper jaw and the lower jaw tend to be a repeatable stable jaw position, the influence of the simulation tooth tips on a wearer in the wearing process is relatively small, and the simulation tooth tips are more stable. In addition, the simulation tooth tips are arranged in the rear tooth area, the mechanical effect of the simulation tooth tips cannot affect the inferior incisor teeth, and the risk of lip inclination of the lower anterior teeth is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to an orthodontic appliance for adjusting jaw position based on simulated tooth cusps and a preparation method thereof. Background Art

[0002] The current clinical treatment techniques for mandibular retrusion, skeletal Class II malocclusion, deep overjet, maxillary protrusion, and Angle Class III malocclusion are mainly divided into three categories:

[0003] Functional orthodontic appliances (Activator / Twin Block / Herbst, etc.): change the direction of jaw growth through mechanical guidance;

[0004] Fixed appliance (MARA / brackets + traction): directly adjusts tooth position through mechanical force;

[0005] Invisalign system (such as Invisalign): Gradually adjust the bite through sequential braces.

[0006] With existing technology, Twin Block braces require full-time wear, with an average compliance rate of less than 60% for adolescent patients. Braces are required to be worn for ≥20 hours daily, but actual wear monitoring data shows only 41% of patients meet this standard, making them highly dependent on patient compliance. Forsus or fixed braces can cause labial tilt of the lower anterior teeth, and Herbst braces can easily cause discomfort in the temporomandibular joint. The volume of the Activator in the mouth can affect the patient's pronunciation function, resulting in decreased speech clarity. Fixed bracket appliances contribute little to jaw bone improvement, relying primarily on tooth compensation. Braces have limited impact on bone improvement and require intermaxillary traction for effective correction.

[0007] Existing orthodontic treatments often present challenges for patients, with treatment effectiveness relying heavily on patient compliance. While adolescents aged 11 to 14 are at the optimal age for jaw correction, their compliance is relatively low, often leading to missed treatment opportunities and poorer treatment outcomes. Furthermore, existing orthodontic appliances exert a significant force on the lower dental arch when advancing the mandible, potentially causing mechanical stress on the lower incisors, leading to unwanted labial tilt. Summary of the Invention

[0008] The purpose of the present invention is to solve the problems of strong compliance of existing orthodontic appliances and easy lip tilt of lower incisors after being stressed, and to provide an orthodontic appliance and a preparation method for adjusting the jaw position relationship based on simulated tooth cusps.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] In a first aspect, an orthodontic appliance for adjusting jaw position based on simulated tooth cusps is provided, comprising:

[0011] It includes a simulated tooth tip assembly fixed on the occlusal surface of the tooth, or a corrective brace assembly that accommodates the simulated tooth tip assembly and covers the tooth, or a simulated tooth tip assembly fixed on the occlusal surface of the tooth and a corrective brace assembly installed on the tooth, wherein the simulated tooth tip assembly includes a plurality of simulated tooth tips arranged on the occlusal surface of the teeth in the posterior area, and each simulated tooth tip includes a guide surface arranged in the front area of ​​the simulated tooth tip body and extending toward the opposite jaw, a bearing surface arranged in the rear area of ​​the simulated tooth tip body, and a compensation surface arranged at the bottom of the simulated tooth tip body and matching the occlusal surface, the guide surface guides the occlusal surface of the tooth at the corresponding jaw position or the bearing surface of the simulated tooth tip, so that the upper and lower jaws tend to a repeatable stable jaw position, thereby guiding the adjustment of the jaw relationship for improvement.

[0012] Based on the above invention content, a correction scheme combining simulated tooth tips and corrective braces is provided, that is, the simulated tooth tip assembly is first fixed on the occlusal surface of the posterior area of ​​the teeth, and the patient's jaw relationship is adjusted to normal through the simulated tooth tips. The simulated tooth tip assembly interacts with the occlusal surface of the teeth or the simulated tooth tip assembly at the corresponding jaw position to achieve precise three-dimensional guidance of the jaw, which solves the problems of traditional functional orthodontic appliances such as large size, foreign body sensation, and poor compliance, and is conducive to patients' adaptation to the corrector.

[0013] In a possible design, it further includes an orthodontic brace component that contains a simulated tooth cusp component and covers the teeth or an orthodontic brace component that is installed on the outer surface of the teeth.

[0014] Based on the above invention content, the present application provides an orthodontic appliance for adjusting the jaw relationship based on simulated tooth cusps, in which a correction brace assembly is installed on the basis of the simulated tooth cusps, so that the entire dentition can be corrected while adjusting the jaw relationship.

[0015] In one possible design, the simulated tooth tip assembly includes a first simulated tooth tip assembly provided at the molars of the upper jaw, and the molars include a first premolar, a second premolar, a first molar, and a second molar.

[0016] Based on the above invention content, the present application provides an orthodontic appliance that adjusts the jaw position relationship based on simulating tooth cusps, which limits the effective area to the molar area, enhances the stability of mechanical conduction, and avoids the risk of lip cutting caused by force in the anterior teeth area.

[0017] In one possible design, when the first simulated tooth tip interacts with the occlusal surface of the tooth at the corresponding jaw position of the mandible, the guiding surface of the first simulated tooth tip forms a mating sliding relationship with the occlusal surface, guiding the mandible to move along a predetermined trajectory during occlusion.

[0018] Based on the above invention content, the present application provides an orthodontic appliance for adjusting jaw position based on simulated tooth cusps, in which the maxillary guide surface of the simulated tooth cusps forms a sliding pair with the mandibular natural teeth to reduce the space occupied by the additional structure in the oral cavity.

[0019] In one possible design, the simulated tooth tip assembly also includes a second simulated tooth tip assembly arranged at the molar of the mandible. When the first simulated tooth tip and the second simulated tooth tip interact with each other, the guiding surface of the first simulated tooth tip and the bearing surface of the second simulated tooth tip form a mating sliding relationship, guiding the mandible to move along a predetermined trajectory during occlusion.

[0020] Based on the above invention content, the present application provides an orthodontic appliance for adjusting jaw position relationship based on simulated tooth cusps, which forms a coupled motion track through simulated tooth cusps of the upper and lower jaws to improve the correction accuracy of the orthodontic appliance.

[0021] In one possible design, the simulated tooth tip component fixes the compensation surface on the occlusal surface of the posterior teeth through light-curing resin, or fixes the guiding surface and the bearing surface on the orthodontic brace component.

[0022] Based on the above invention content, the present application provides an orthodontic appliance that adjusts the jaw position relationship based on simulated tooth tips, which is fixed by light-curing resin to avoid micro-leakage. The simulated tooth tip assembly can be fixed on the occlusal surface of the tooth or on the orthodontic brace assembly, so that it can be adapted to users with different adaptability.

[0023] In one possible design, an inner side of the orthodontic crown assembly covering the teeth is provided with a receiving cavity that matches the shape of the teeth on which the simulated tooth tip assembly is installed.

[0024] Based on the above invention content, the present application provides an orthodontic appliance for adjusting the jaw relationship based on simulated tooth tips, which ensures that the simulated tooth tip component and the orthodontic brace component can match each other, and can still be used for adjusting the jaw relationship even after the orthodontic brace component is removed.

[0025] In a second aspect, a method for preparing the above-mentioned orthodontic appliance is provided, comprising the following preparation steps:

[0026] Make the patient's target jaw model, which is the jaw model obtained by protruding the mandible from the patient's initial jaw position;

[0027] Make simulated tooth tip components according to the target jaw position model;

[0028] Based on the simulated tooth cusp components and the target jaw position model, the orthodontic braces components are manufactured.

[0029] In one possible design, a simulated cusp assembly is fabricated based on the target jaw model, including the following steps:

[0030] Construct a three-dimensional structural model of the simulated tooth cusp component in the posterior tooth area of ​​the target jaw model;

[0031] Negative pressure is applied to the three-dimensional structural model of the simulated tooth cusp component through a resin hard film to form a simulated tooth cusp transfer template.

[0032] In one possible design, after manufacturing the simulated tooth cusp assembly according to the target jaw position model, the method further includes the following steps:

[0033] Transfer and paste the simulated cusp assembly to the occlusal surface of the patient's corresponding tooth through the simulated cusp transfer template;

[0034] Based on the simulated tooth cusp components and the target jaw model, the orthodontic braces components are manufactured, including:

[0035] A digital model of the entire dentition is made with simulated cusp components attached, and the orthodontic appliance is made based on the digital model of the entire dentition.

[0036] Beneficial effects of the above scheme:

[0037] (1) The present invention creatively provides an appliance for adjusting the jaw position relationship based on simulated tooth tips, that is, a simulated tooth tip assembly is first fixed on the occlusal surface of the posterior area of ​​the teeth, and the patient's jaw position relationship is adjusted to normal by simulating the tooth tips. Then, a correction brace assembly is installed on this basis. In this way, the entire dentition can be corrected while adjusting the jaw position relationship. The simulated tooth tip assembly interacts with the occlusal surface of the teeth or the simulated tooth tip assembly at the corresponding jaw position to achieve precise three-dimensional guidance of the jaw. The solution provided by this application is less dependent on patient compliance and can achieve 24-hour jaw guidance, which can greatly improve the effectiveness of treatment. For patients with high joint sensitivity, a method of using printed correction braces to simulate tooth tips to guide the jaw position can be used for staged treatment in the early stage. After the patient adapts, the method is changed to resin-bonded simulation of tooth tips to guide the jaw position. If the patient's joints cannot adapt, the correction brace simulation of tooth tips to guide the jaw position can be removed at any time. The appliance provided by the present invention does not directly act on the lower front teeth, which can reduce the occurrence of unnecessary labial inclination of the lower incisor. At the same time, the appliance is small in size, the patient feels comfortable, and can also play a chewing function at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 This is a diagram of the dental arrangement under malocclusion;

[0040] Figure 2 A schematic diagram of the structure of an orthodontic appliance for adjusting jaw position based on simulated tooth cusps provided in an embodiment of the present application;

[0041] Figure 3 A schematic diagram of the structure of an orthodontic appliance for adjusting jaw position based on simulated tooth cusps provided in an embodiment of the present application;

[0042] Figure 4 A schematic structural diagram of a simulated tooth tip assembly provided in an embodiment of the present application;

[0043] Figure 5 A schematic flow chart of the method for preparing an orthodontic appliance provided in an embodiment of the present application.

[0044] Among them, 1-tooth; 2-simulated tooth tip assembly; 3-corrective brace assembly;

[0045] 201 - guiding surface; 202 - bearing surface; 203 - compensation surface. DETAILED DESCRIPTION

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the drawings is only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these embodiments without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0047] It should be understood that in the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "horizontal," "inner," etc. appear to indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is typically placed when in use, they are merely for the purpose of facilitating the description of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In addition, the terms "first," "second," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0049] See first Figure 1 , Figure 1 This is a typical diagram of an abnormal jaw position. The abnormal occlusion relationship between the upper and lower jaws and teeth can lead to multiple problems in facial appearance, oral function, and overall health. The upper jaw protrudes forward or the lower jaw retracts, the front teeth over-cover the lower teeth, and the lips are often open and the teeth are exposed. Long-term abnormal jaw position can easily lead to serious damage to oral function and reduced chewing efficiency: it increases the risk of oral health and causes problems with facial development and aesthetics.

[0050] Therefore, in the first aspect of the present application, an appliance for adjusting the jaw position relationship based on simulated tooth cusps is proposed, see Figure 2 and Figure 3 In some embodiments, the present appliance can be Figure 2 The shown includes only the simulated tooth tip assembly mounted on the occlusal surface of the tooth, or as Figure 3 As shown, the simulated tooth tip component and the corrective tooth brace component are matched, wherein:

[0051] The simulated tooth tip assembly 2 can be made of high-strength composite resin or ceramic material. In specific implementation, the composite resin can adopt high-strength light-cured resin (such as Bis-GMA-based material), whose bending strength is ≥150MPa and wear resistance meets clinical needs; the ceramic material can be zirconium oxide or aluminum oxide ceramic, and the surface is polished to reduce the wear of the opposing teeth. The simulated tooth tip assembly 2 includes a plurality of simulated tooth tips, which are usually fixed in the maxillary molar area (first premolar to second molar), and corresponding simulated tooth tips are added to the corresponding area of ​​the mandible when necessary. For example, in cases of mandibular retrusion, the maxillary simulated tooth tips can be set on the bilateral first molars to guide the mandibular protrusion; for Angle Class III malocclusion, it may be necessary to add tooth tips in the mandibular molar area.

[0052] See also Figure 4 , the structural details of the simulated tooth cusp are as follows:

[0053] A. Guide Surface 201: Designed as an inclined surface (e.g., a 30° bevel), it forms a sliding contact with the opposing teeth. The guide surface angle can be customized to the patient's jaw adjustment needs, typically ranging from 20° to 45°. For example, a deeper overbite patient may benefit from a larger angle (40°) to facilitate mandibular advancement.

[0054] B. Bearing surface 202: This is a flat or slightly concave surface that distributes occlusal forces to prevent cusp fracture or tooth damage. A concave surface design can enhance stability, such as a 0.5mm deep concave structure.

[0055] C. Compensation surface 203: It is a concave surface adapted to the occlusal surface of the tooth, used to fit closely with the occlusal surface of the tooth. When the simulated tooth tip is fixed on the orthodontic brace assembly, it is used to assist the orthodontic brace assembly in being fixed on the tooth. When the simulated tooth tip is fixed on the occlusal surface of the tooth, it is used to bond with the occlusal surface of the tooth to ensure that the simulated tooth tip is firmly fixed on the tooth.

[0056] It should be noted that the guide surface is an inclined surface with an inclination angle between 20°-45° (preferably 30°-40°), which is used to guide the opposing teeth to move along a predetermined trajectory. The surface roughness Ra of the guide surface is controlled at 0.8-1.2μm to reduce friction resistance and ensure smooth sliding. The curvature radius of the guide surface is designed according to the anatomical morphology of the teeth, with a radius of 3-5mm in the anterior area and 5-8mm in the posterior area to accommodate different occlusal movement trajectories.

[0057] In practice, the guiding, bearing, or compensating surfaces can all serve as bonding surfaces. Microstructures (such as grooves, nanocoatings, or mechanical anchoring points) can be incorporated into the bonding surface to enhance bonding strength. The nanocoating can be treated with a silane coupling agent to create a microscopically rough surface, which, when combined with a light-curing resin adhesive, provides a durable bond.

[0058] In other embodiments, as an optional implementation, a detachable simulated tooth tip can be used, which can be achieved by magnetic connection, snap-fit ​​structure or temporary adhesive.

[0059] A 1mm diameter NdFeB magnet is embedded in the bottom of the simulated tooth tip, forming a magnetic connection with the corresponding magnet in the brace to ensure stability and facilitate removal.

[0060] Alternatively, an elastic clip is designed on the edge of the simulated tooth tip to cooperate with the slot on the braces. The interference fit of the clip is 0.1-0.2mm, which facilitates the replacement of the simulated tooth tip.

[0061] In some possible implementations, the braces may be invisible braces that cover the teeth, or they may be traditional braces that are mounted on the outer surface of the teeth. If traditional braces are used in this application, the traditional braces are essentially the same as the original method of use, so they will not be described in detail. The following further describes the use of invisible braces in this application.

[0062] In the present application, the structure of the orthodontic brace component is preferably made of a transparent polymer material (such as PETG, polymethyl methacrylate PMMA) with a thickness of 0.75-1.2 mm to ensure elastic deformation capability while providing sufficient mechanical strength.

[0063] During the manufacturing process, digital modeling is used to precisely create a cavity within the brace assembly. This cavity leaves 0.2-0.5mm of clearance for the simulated tooth cusps, ensuring they are not compressed when the braces are worn. For example, a full dentition model with simulated cusps is acquired using a 3D scanner. When designing the braces in CAD software, a 0.3mm clearance between the cavity and the tooth cusp surface is maintained to prevent interference with the sliding function.

[0064] The guiding surface of the simulated tooth cusp forms a sliding contact with the occlusal surface of the opposing tooth, forcing the mandible to move along a predetermined trajectory to the target jaw position. For example, when the patient bites down, the inclined surface of the guiding surface forces the mandible forward, while the braces apply tooth-moving force, achieving synchronous adjustment of the jaw and teeth.

[0065] For example, the sliding contact between the guide surface and the opposing teeth must meet the following conditions:

[0066] During static occlusion, the contact point between the guiding surface and the opposing teeth is located in the middle front part of the guiding surface (2-3 mm from the apex of the tooth cusp) to avoid premature contact of the posterior teeth.

[0067] During dynamic occlusion, the sliding trajectory guides the mandibular advancement by ≤0.5mm per step, and the total advancement is designed according to the degree of patient deformity (e.g., 6-8mm).

[0068] For example, when used for correction of skeletal Class II malocclusion, the simulated cusp guide surface is designed to be a 30° bevel, and the mandible is moved forward 0.3 mm each time the braces are replaced, and the treatment is completed in multiple steps.

[0069] Orthodontic braces cover the entire tooth row and adapt to the simulated tooth cusps to ensure that the braces and tooth cusps maintain a stable relative position during the correction process, preventing the tooth cusps from falling off or shifting.

[0070] The second aspect of the present application provides a method for preparing the orthodontic appliance described in the first aspect, see Figure 5 , specifically including the following steps:

[0071] Step S1: preparing a target jaw model of the patient, wherein the target jaw model is a jaw model obtained by protruding the mandible from the initial jaw position of the patient;

[0072] Specifically, the following steps are included:

[0073] The patient's mandible is extended forward until the anterior teeth are incisored, and the canines are vertically opened 3-5 mm (for example, 4 mm), and the occlusal relationship of the jaw position is recorded. The occlusal relationship can be recorded by traditional methods or digital methods to obtain the patient's target jaw position model. For example, if the traditional method is used, occlusal wax or silicone rubber can be used for recording, and then plaster can be poured to obtain a physical model of the target jaw position. If the digital method is used, an intraoral scanner (such as iTero, 3Shape) can be used to directly obtain a three-dimensional digital model of the target jaw position.

[0074] Afterwards, the model was mounted on the articulator using the facebow transfer technique to confirm that the mandibular position met the treatment goals (e.g., amount of advancement, vertical distance).

[0075] Step S3: making a simulated tooth cusp assembly according to the target jaw position model.

[0076] Based on the target jaw model, a three-dimensional structural model of the simulated tooth cusp is constructed in the posterior tooth area of ​​the target jaw model. The three-dimensional structural model includes the guiding surface angle, bearing surface shape, and mating surface shape of each simulated tooth cusp.

[0077] Specifically, a simulated cusp model is carved using red or hard wax on a physical model of the target jaw position, ensuring that the guide surface forms a predetermined sliding path with the opposing tooth. The inclination of the guide surface is controlled by the angle of the wax knife, and the contact area between the bearing surface and the occlusal surface of the opposing tooth or the guide surface of the opposing tooth must be ≥50%.

[0078] Afterwards, negative pressure is applied to the three-dimensional structure model of the simulated tooth cusp through a resin hard film to form a simulated tooth cusp transfer template.

[0079] Alternatively, the cusp can be designed using CAD software (such as DentalCAD) based on a digital model of the target jaw. For example, the guiding surface can be set as a NURBS surface, and the curvature radius can be adjusted (e.g., 5-8 mm) to optimize sliding performance. The design parameters can be exported as an STL file, and the simulated cusp assembly can be subsequently produced via 3D printing.

[0080] Step S5: manufacturing a correction brace assembly based on the simulated tooth cusp assembly and the target jaw position model.

[0081] After the simulated tooth tip assembly is made, the simulated tooth tip assembly can be fixed. Based on the different adaptability of different patients, some patients have stronger adaptability during the initial jaw adjustment, so the simulated tooth tip assembly can be fixed on the teeth first. Correspondingly, other patients may not be able to adapt well to long-term jaw adjustment during jaw adjustment, so the simulated tooth tip assembly can be fixed on the braces assembly. If it is necessary to fix the simulated tooth tip assembly on the braces assembly, the shape of the occlusal surface of the posterior teeth area of ​​the braces assembly is directly determined based on the established three-dimensional structural model of the simulated tooth tip assembly and the target jaw model, so that when the braces assembly is worn, the braces assembly itself can play a role in adjusting the jaw position. At the same time, the prepared simulated tooth tip assembly is pasted on the inside of the braces assembly to prevent the teeth from having large displacement errors when wearing the braces assembly, thereby better fitting the patient's occlusal surface and improving the patient's wearing comfort.

[0082] If the adaptability is strong or the patient has worn the orthodontic braces with simulated tooth tips for a period of time, the simulated tooth tips can be directly fixed on the occlusal surface of the teeth. The following methods can be used to fix the simulated tooth tips:

[0083] Method 1:

[0084] A 0.5 mm thick resin hard film (such as PMMA) is covered on the simulated tooth cusp three-dimensional model and a transfer template is made by molding using a vacuum laminator.

[0085] The patient's tooth surface was cleaned, etched (treated with 37% phosphoric acid for 30 seconds), rinsed and blown dry.

[0086] Apply a resin adhesive (such as Single Bond 2) and fill the inner layer of the transfer template with a light-curing composite resin (such as Filtek Z350).

[0087] Press the template onto the patient's teeth, light cure for 40 seconds, and remove excess resin.

[0088] Adjust the jaw and polish to ensure the simulated tooth cusp surface is smooth without occlusal interference.

[0089] Alternatively, use method 2 to adjust:

[0090] Temporary crowns with simulated cusps are directly printed using biocompatible resins (such as NextDent dental printing resin), completing cusp fixation and initial tooth alignment in one step. Printing accuracy must reach ±0.05mm, and subsequent clinical adjustments are required to ensure accurate cusp placement.

[0091] Step S4: manufacturing a correction brace assembly based on the simulated tooth cusp assembly and the target jaw position model.

[0092] Import the complete dentition model with simulated cusps into orthodontic design software (such as Align Technology's ClinCheck system) to design tooth movement paths (such as lowering the anterior teeth and expanding the arch). When generating the brace model, the receiving cavity must precisely fit the cusp shape, leaving a 0.3mm gap, and a stress buffer (such as a rounded transition) must be designed around the cusps.

[0093] Select PETG film, heat it to 65℃ in a vacuum laminator to soften it, and press it onto the model to form the braces.

[0094] Use highly elastic photosensitive resin (such as Ergomax material), and post-processing (such as UV curing and mechanical polishing) is required after printing.

[0095] Below, the technical solution provided by this application is further explained with reference to specific cases:

[0096] Case 1: Anterior deep overbite correction

[0097] The patient's anterior teeth need to be guided to the protrusive position, and the simulated tooth cusp guiding surface is designed with an inclination angle of 35° and a concave depth of 0.5mm on the bearing surface;

[0098] Use temporary crown resin material on the simulated tooth cusp to enhance bonding;

[0099] After 6 weeks of clinical trial wearing, the deviation between the displacement of the anterior teeth and the design value was less than 0.02mm, and patients reported high comfort.

[0100] Case 2: Posterior occlusal reconstruction

[0101] The target jaw position was bilateral balanced occlusion, and the simulated cusp guiding surface was designed with an inclination angle of 40° and a concentric groove array (0.5 mm in diameter and 1 mm in spacing) on ​​the bearing surface.

[0102] The material of the orthodontic braces is PMMA, with a thickness of 1.2 mm in the posterior area, and the stress buffer area covers the edge of the cusp receiving cavity;

[0103] Zirconia ceramics are used to simulate tooth cusps, and the surface is treated with nano-coating (silicon dioxide particles with a diameter of 20nm), which increases wear resistance by 35%;

[0104] After 500 cycles of loading test, the deviation of the tooth tip sliding track was less than 0.1mm, and the braces did not break.

[0105] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An appliance for adjusting jaw position based on simulated tooth cusps, characterized in that: It includes a simulated tooth tip assembly fixed on the occlusal surface of the tooth, wherein the simulated tooth tip assembly includes a plurality of simulated tooth tips arranged on the occlusal surface of the teeth in the posterior tooth area, each of the simulated tooth tips includes a simulated tooth tip body, and a guide surface arranged in the front area of ​​the simulated tooth tip body and extending toward the opposite jaw, a bearing surface arranged in the rear area of ​​the simulated tooth tip body, and a compensation surface arranged at the bottom of the simulated tooth tip body and matching the occlusal surface, the guide surface guides the occlusal surface of the tooth at the corresponding jaw position or the bearing surface of the simulated tooth tip, so that the upper and lower jaws tend to a repeatable stable jaw position.

2. The orthodontic appliance according to claim 1, wherein: It also includes a correction brace component that contains the simulated tooth tip component and covers the teeth, or a correction brace component installed on the outer surface of the teeth.

3. The orthodontic appliance according to claim 1, wherein: The simulated tooth tip assembly includes a first simulated tooth tip assembly provided at a molar of the upper jaw, wherein the molar includes a first premolar, a second premolar, a first molar, and a second molar.

4. The orthodontic appliance according to claim 3, characterized in that When the first simulated tooth tip assembly interacts with the occlusal surface of the teeth at the corresponding jaw position of the mandible, the guide surface of the first simulated tooth tip assembly forms a mating sliding relationship with the occlusal surface, guiding the mandible to move along a predetermined trajectory during the occlusion process.

5. The orthodontic appliance according to claim 3, wherein: The simulated tooth tip assembly also includes a second simulated tooth tip assembly arranged at the molar of the mandible. When the simulated tooth tips of the first simulated tooth tip assembly and the simulated tooth tips of the second simulated tooth tip assembly interact with each other, the guiding surface of the simulated tooth tips of the first simulated tooth tip assembly and the bearing surface of the simulated tooth tips of the second simulated tooth tip form a mating sliding relationship, guiding the mandible to move along a predetermined trajectory during occlusion.

6. The orthodontic appliance according to claim 1, wherein: The simulated tooth tip assembly fixes the compensation surface on the occlusal surface of the posterior teeth through light-curing resin, or fixes the guide surface and the bearing surface on the correction brace assembly.

7. The orthodontic appliance according to claim 2, wherein: The inner side of the correction mouthpiece assembly covering the teeth is provided with an accommodating cavity that matches the shape of the teeth on which the simulated tooth tip assembly is installed.

8. A method for preparing the orthodontic appliance according to any one of claims 1 to 7, characterized in that: The method comprises the following preparation steps: Making a target jaw position model of the patient, wherein the target jaw position model is a jaw position model obtained by performing mandibular protrusion on the patient's initial jaw position; making a simulated tooth cusp assembly according to the target jaw position model; Based on the simulated tooth cusp assembly and the target jaw position model, a correction brace assembly is manufactured.

9. The method according to claim 8, characterized in that The method of making a simulated tooth cusp assembly according to the target jaw position model comprises the following steps: Constructing a three-dimensional structural model of a simulated tooth cusp assembly in the posterior tooth area of ​​the target jaw model; Negative pressure is applied to the three-dimensional structural model of the simulated tooth cusp component through a resin hard film to form a simulated tooth cusp transfer template.

10. The method according to claim 9, characterized in that After manufacturing the simulated tooth cusp assembly according to the target jaw position model, the method further comprises the following steps: Transferring and pasting the simulated tooth cusp assembly onto the occlusal surface of the patient's corresponding tooth using a simulated tooth cusp transfer template; The method of manufacturing a correction brace assembly based on the simulated tooth cusp assembly and the target jaw position model includes: A digital model of the entire dentition with the simulated cusp assembly attached is produced, and an orthodontic appliance is produced based on the digital model of the entire dentition.

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