Manufacturing method of orthodontic appliance capable of accurately depressing anterior teeth and orthodontic appliance

Abstract

The invention relates to a manufacturing method of an orthodontic appliance capable of accurately depressing anterior teeth and the orthodontic appliance. The manufacturing method of the orthodontic appliance capable of accurately depressing anterior teeth comprises the following steps: at least determining a jaw covering numerical value, a covering numerical value and an occlusal plane according to a digital tooth jaw model, and determining a demanded depressing amount according to the jaw covering numerical value; determining a preset coverage threshold value, and determining a corresponding low platform type according to a first comparison result between the preset coverage threshold value and the coverage value; and determining a preset low pressure amount, determining whether to execute a staged low pressure operation or not according to a second comparison result of the preset low pressure amount and the demand low pressure amount, and if the staged low pressure operation is executed, determining each stage low pressure amount in the staged low pressure operation, and the staged low pressure amount can be dynamically adjusted based on the user interaction window. By means of the method, personalized correction schemes can be provided for patients with different jaw covering degrees, accurate control over the pressure lowering amount can be ensured, and therefore the problem of repeated adjustment caused by inaccurate pressure lowering in a traditional method is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of orthodontic appliance manufacturing, and in particular to a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth and an orthodontic appliance. Background Art

[0002] Currently, in orthodontic treatment, the opening of occlusion is mainly achieved by depressing anterior teeth and / or elongating posterior teeth. As an orthodontic technique that takes into account aesthetics, hygiene, and efficiency, the lingual appliance-free clear aligner technique has been widely recognized by doctors and patients. However, in the invisible aligner technique, the effect of opening occlusion is not satisfactory in most cases. The effective rate of clear aligners in depressing incisors is only about 50%. Therefore, for deep overbite cases, relying solely on clear aligners to open occlusion is not ideal enough. Most cases require continuous restarts, and some cases of severe deep overbite need to assist in depressing by implanting miniscrews, and continuously increasing the amount of incisor depression to achieve the final target position, which not only prolongs the treatment time, greatly increases the treatment cost of patients, but also increases the burden on doctors. Although flat guides or inclined guides can be used to assist in depressing anterior teeth, limited by the lack of design accuracy and control mechanics, the actual amount of depression is difficult to accurately control, and overcorrection design (such as aiming to depress 2 mm but designing to depress 4 mm or more) is often required to make up for the insufficient treatment effect, further increasing the uncertainty of treatment. Summary of the Invention

[0003] In order to solve the problems that the effect of occlusion of traditional orthodontic appliances is not ideal enough and continuous restarts are required, and the amount of depression is difficult to accurately control when using flat guides or inclined guides to assist in depressing anterior teeth, the present application provides a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth and an orthodontic appliance.

[0004] A method for manufacturing an orthodontic appliance for precisely depressing anterior teeth, the method for manufacturing an orthodontic appliance for precisely depressing anterior teeth includes: Obtaining a digital dental model of a patient; Determining at least the overbite value, overjet value, and occlusal plane according to the digital dental model, and the required amount of depression determined according to the overbite value; Determining a preset overjet threshold, and determining the corresponding type of depression platform according to the first comparison result between the preset overjet threshold and the overjet value; Determining a preset amount of depression, and determining whether to perform a staged depression operation according to the second comparison result between the preset amount of depression and the required amount of depression. If the staged depression operation is performed, determine the amount of depression in each stage of the staged depression operation, wherein the amount of depression in each stage can be dynamically adjusted based on a user interaction window; Construct a corresponding platform model according to the intrusion platform type, the occlusal plane, and the required intrusion amount or the staged intrusion amount. Add the platform model to the digital dental arch model to generate a corresponding target tooth model, and fabricate an orthodontic appliance based on the target tooth model.

[0005] By adopting the above technical solution, the present application makes full use of digital technology. First, a digital dental arch model of a patient is obtained and analyzed in detail to clarify key parameters such as the overbite value, the occlusal plane, and the required intrusion amount. These parameters provide a scientific basis for the design of the appliance, ensuring that the design can meet the actual needs of the patient. The preset overbite threshold and the required intrusion amount are introduced to respectively compare and analyze the actual situation of the patient, so as to dynamically determine the intrusion platform type and whether staged intrusion is required. If staged intrusion is needed, the intrusion amount of each stage is clarified in the design, and dynamic adjustment is allowed through the user interaction window. This flexibility significantly improves the accuracy of appliance design and treatment. In addition, this solution combines the required intrusion amount or the staged intrusion amount with the intrusion platform type and the occlusal plane to construct a corresponding platform model, and then adds the platform model to the digital dental arch model to generate a target tooth model. Through this refined and dynamically adjusted design method, not only can personalized treatment plans be provided for patients with different overbite degrees, but also the precise control of the intrusion amount can be ensured, thus avoiding the problem of repeated adjustment caused by inaccurate intrusion in traditional methods. At the same time, this method uses digital modeling and platform design to transform complex mechanical requirements into precise and executable models, greatly improving the effect and efficiency of the appliance in occlusal adjustment. Finally, by controlling the details of the appliance, the bottleneck problems of accuracy and efficiency in traditional orthodontic treatment are effectively solved, making the operations of occlusal opening and anterior tooth intrusion more scientific and reasonable.

[0006] In a preferred example of the present application, it can be further configured that: in the step of determining at least the overbite value, the overjet value, and the occlusal plane according to the digital dental arch model, and determining the required intrusion amount according to the overbite value, it includes: Determine the overbite value and the required intrusion amount according to the digital dental arch model; Segment the maxillary dentition model included in the digital dental arch model to generate a plurality of single-tooth digital tooth models; Select molar models and incisor models from the plurality of single-tooth digital tooth models; Classify each of the molar models to generate bilateral molar model clusters; Determine the highest point of the mesial lingual cusp of each side of the molar model cluster as the first highest point; Determine the two incisor models at the most central position between the molar model clusters on both sides as the target models, and determine the mesial incisal points of the two target models as the second highest points; Based on the second highest points and the two first highest points, determine the corresponding occlusal plane.

[0007] By adopting the above technical solution, through the precise analysis of the digital dental cast model, single tooth models can be segmented and generated, and molar and incisor models can be screened out. Combining the highest points of the mesial lingual cusps of each molar and the mesial incisal points of the incisors, the occlusal plane can be accurately determined. This method optimizes the definition process of the occlusal plane, improves the scientific and personalized level of orthodontic appliance design, and ensures stronger treatment pertinence.

[0008] In a preferred example of the present application, it can be further configured that: in the step of determining the corresponding intrusion platform type according to the comparison result between the preset coverage threshold and the coverage value, it includes: Judge whether the coverage value is less than the preset coverage threshold; If it is less than the preset coverage threshold, determine that the intrusion platform type is a triangular intrusion platform; If it is not less than the preset coverage threshold, determine that the intrusion platform type is an airplane-shaped intrusion platform.

[0009] By adopting the above technical solution, the triangular intrusion platform or the airplane-shaped intrusion platform can be dynamically selected as the intrusion platform type according to the comparison between the coverage value and the preset coverage threshold. Through this hierarchical selection mechanism, it is ensured that the intrusion platform type can accurately adapt to different degrees of coverage, thereby optimizing the mechanical transmission effect and improving the stability and effectiveness of the orthodontic appliance during anterior tooth intrusion and bite opening.

[0010] In a preferred example of the present application, it can be further configured that: in the step of constructing the corresponding platform model according to the intrusion platform type, the occlusal plane, and the required intrusion amount or the staged intrusion amount, it includes: If the intrusion platform type is a triangular intrusion platform, construct a first initial platform model in the incisor region of the maxillary dental arch model of the digital dental cast model. The incisor region includes four incisor models arranged in sequence. The first initial platform model is symmetrically arranged on the two middle incisor models, and the bottom surface of the first initial platform model is parallel to the occlusal plane; according to the required intrusion amount L 0 Or the staged intrusion amount L n , construct the triangular platform model on the basis of the first initial platform model.

[0011] By adopting the above technical solutions, it is possible to construct a symmetrically distributed first initial platform model in the incisor region according to the type of intrusion platform, the occlusal plane, and the required intrusion amount or the staged intrusion amount, and ensure that its bottom surface is parallel to the occlusal plane. On this basis, it is further optimized into a triangular platform model to accurately achieve uniform force distribution and intrusion effect, and improve the applicability and mechanical stability of the appliance in the treatment of deep overbite.

[0012] In a preferred example of the present application, it can be further configured that: according to the required intrusion amount L 0 or the staged intrusion amount L n , in the step of constructing the triangular platform model on the basis of the first initial platform model, it includes: Obtain the thickness H of the dental appliance; According to the digital dental model, determine the anterior-posterior tooth opening parameter k; Determine the overbite value L a ; Calculate the first parallel extension distance O based on the first initial platform model n1 , and the calculation formula is: O n1 = L a - H×k + L 0 or O n1 = L a - H×k + L n ; According to the second parallel extension distance O n2 , construct the triangular platform model on the basis of the first initial platform model.

[0013] By adopting the above technical solutions, it is possible to accurately calculate the first parallel extension distance by obtaining the thickness H of the dental appliance, determining the anterior-posterior tooth opening parameter k, and the overbite value. On this basis, optimize and construct the triangular platform model according to the calculation results, make the platform model more in line with the actual needs of the patient, ensure that the design of the platform reaches the best effect in terms of mechanical distribution and spatial layout, thereby improving the accuracy and treatment efficiency of the appliance.

[0014] In a preferred example of the present application, it can be further configured that: in the step of constructing the corresponding platform model according to the type of intrusion platform and the occlusal plane, and the required intrusion amount or the staged intrusion amount, it includes: If the depression platform type is an airplane-shaped depression platform, a second initial platform model is constructed in the incisor region of the maxillary dentition model of the digital dental jaw model, the incisor region includes four incisor models arranged in sequence, the depression platform in the second initial platform model is symmetrically arranged on the two middle incisor models, the two wings in the second initial platform model are in contact with the molar region or the canine region of the maxillary dentition model of the digital dental jaw model, and the bottom surface of the second initial platform model is parallel to the occlusal plane; According to the requirements, the amount L is lowered 0 Or the stage depression amount L n , constructing the aircraft platform model based on the second initial platform model.

[0015] By adopting the above technical solution, the second initial platform model can be accurately constructed in the incisor area of ​​the digital dental model according to the characteristics of the depression platform type being an airplane-shaped depression platform, ensuring that the depression platform is symmetrically distributed in the two middle incisor models, while the two wings are in contact with the molar area and remain parallel to the occlusal plane. On this basis, combined with the required depression amount or stage depression amount, it is further optimized into an airplane platform model, so that it can more effectively disperse mechanical pressure in the case of high overbite, enhance the stability and durability of the appliance, and thus improve the overall effect of depression and occlusal adjustment.

[0016] In a preferred example, the present application can be further configured as follows: 0 Or the stage depression amount L n , the step of constructing the aircraft platform model based on the second initial platform model includes: obtaining the brace thickness H; Determine the front and rear teeth opening parameter k according to the digital dental jaw model; Determine the overbite value L a ; Calculate the second parallel extension distance O based on the second initial platform model n2 , the calculation formula is: n2 =L a -H×k+L 0 Or n2 =L a -H×k+L n ; According to the second parallel extension distance O n2 , constructing the aircraft platform model based on the second initial platform model.

[0017] By adopting the above technical solution, the distance beyond the second parallel extension can be accurately calculated by obtaining the braces thickness H, the front and rear teeth opening parameter k and the overbite value, and the formula can be used for quantitative analysis. On this basis, combined with the second initial platform model, the aircraft platform model is optimized and constructed so that it can fit the patient's digital dental model more accurately. This design ensures the rationality of the mechanical distribution of the depression operation and the stability of the platform structure, effectively improving the accuracy and durability of the appliance in deep overbite correction.

[0018] In a preferred example, the present application may be further configured as follows: the step of constructing a corresponding platform model according to the depression platform type and the occlusal plane, and the required depression amount or the stage depression amount, further includes: Perform a depression amount simulation operation to obtain a corresponding simulated depression amount; If the amount L is lowered according to the requirements 0 Calculate the first parallel extension distance O n1 Or the second parallel extension distance O n2 , then according to the third comparison result of the simulated depression amount and the required depression amount, it is determined whether to construct a corresponding platform model; if according to the stage depression amount L n Calculate the first parallel extension distance O n1 Or the second parallel extension distance O n2 , then according to the fourth comparison result between the simulated depression amount and the stage depression amount, it is determined whether to continue the staged depression operation, and if not, the corresponding platform model is directly constructed.

[0019] By adopting the above technical solution, it is possible to obtain the simulated depression amount by performing a depression simulation operation, and compare and analyze it with the required depression amount or stage depression amount, and accurately determine whether it is necessary to build a corresponding platform model or continue the staged depression operation. This method uses the verification mechanism of the simulated depression amount to effectively improve the accuracy of the platform model design, ensuring that while meeting the depression requirements, the mechanical structure of the orthodontic appliance is optimized, thereby avoiding treatment delays or poor results caused by design deviations.

[0020] In a preferred example, the present application may be further configured as follows: the step of determining whether to continue the staged depression operation, and if not, directly constructing the corresponding platform model, includes: If the staged push-down operation continues, determining whether to push the corresponding user interaction window; If the corresponding user interaction window is not pushed, determining a new stage depression amount according to the staged depression operation, and then obtaining a new fourth comparison result for re-judgment; If a corresponding user interaction window is pushed, the adjusted stage depression amount is determined according to the user interaction window, and based on the adjusted stage depression amount, a new fourth comparison result is further obtained for re-judgment.

[0021] By adopting the above technical solution, it is possible to dynamically adjust the stage depression amount during the staged depression operation. Through the judgment of whether to push the user interaction window, the design process of the orthodontic appliance can be flexibly optimized. When the interaction window is not pushed, the system can automatically adjust the new stage depression amount based on the staged depression operation and obtain an updated comparison result; when the interaction window is pushed, the stage depression amount is further adjusted in combination with the user's interaction input. This design improves the flexibility and accuracy of the operation, ensures that the orthodontic appliance meets the depression requirements while adapting to the personalized treatment needs of the patient, and significantly improves the accuracy and efficiency of the treatment.

[0022] An orthodontic appliance for precisely depressing anterior teeth is manufactured using a manufacturing method for an orthodontic appliance for precisely depressing anterior teeth.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: The present application makes full use of digital technology. First, a digital dental model of the patient is obtained and refined analysis is performed on it to clarify key parameters such as the overbite value, occlusal plane, and required depression amount. These parameters provide a scientific basis for the design of the orthodontic appliance, ensuring that the design can fit the actual needs of the patient. By introducing a preset overbite threshold and required depression amount, a comparative analysis is respectively performed on the actual situation of the patient to dynamically determine the type of depression platform and whether staged depression operation is required. If staged depression is required, the depression amount of each stage is clarified in the design, and dynamic adjustment is allowed through the user interaction window. This flexibility significantly improves the accuracy of the orthodontic appliance design and treatment. In addition, this solution combines the required depression amount or stage depression amount with the type of depression platform and the occlusal plane to construct a corresponding platform model, and then adds the platform model to the digital dental model to generate a target tooth model; Through this refined and dynamically adjusted design method, not only can personalized treatment plans be provided for patients with different overbite degrees, but also the precise control of the depression amount can be ensured, thus avoiding the problem of repeated adjustment caused by inaccurate depression in traditional methods. At the same time, this method uses digital modeling and platform design to transform complex mechanical requirements into precise and executable models, greatly improving the effect and efficiency of the orthodontic appliance in occlusal adjustment. Finally, through the detailed control of the orthodontic appliance, the bottleneck problems of accuracy and efficiency existing in traditional orthodontic treatment are effectively solved, making the operations of occlusal opening and anterior tooth depression more scientific and reasonable. Description of the Drawings

[0024] Figure 1It is a flowchart of a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth in an embodiment of the present application.

[0025] Figure 2 It is a flowchart for implementing step S20 in a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth in an embodiment of the present application; Figure 3 It is a flowchart for implementing step S50 in a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth in an embodiment of the present application; Figure 4 It is a flowchart for implementing step S52 in a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth in an embodiment of the present application; Figure 5 It is a flowchart for implementing step S522 in a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth in an embodiment of the present application; Figure 6 It is a flowchart for implementing step S53 in a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth in an embodiment of the present application; Figure 7 It is a flowchart for implementing step S532 in a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth in an embodiment of the present application; Figure 8 It is a flowchart for implementing step S54 in a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth in an embodiment of the present application; Figure 9 It is another flowchart for implementing step S54 in a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth in an embodiment of the present application; Figure 10 It is a structural diagram of an application scenario of an orthodontic appliance for precisely depressing anterior teeth with a triangular depression platform type in an embodiment of the present application; Figure 11 It is a structural diagram of an application scenario of an orthodontic appliance for precisely depressing anterior teeth with an airplane-shaped depression platform type in an embodiment of the present application. Detailed implementation manners

[0026] The following further elaborates on the present application in conjunction with the accompanying drawings.

[0027] In one embodiment, as Figure 1 shown, the present application discloses a method for manufacturing an orthodontic appliance for precisely depressing anterior teeth, specifically including the following steps: S10. Obtain the digital dental model of the patient; In this embodiment, the digital dental model of the patient is obtained by using a high-precision oral 3D scanning device (such as an optical scanner) to perform an all-round scan of the patient's upper and lower dental arches, generating a three-dimensional digital dental model. This model can completely reflect the tooth arrangement, occlusion relationship, and the characteristics of hard and soft tissues of the patient, with a high degree of realism and accuracy. Through this model, doctors can clearly observe the spatial relationship between the upper and lower teeth, the inclination angle of the teeth, and the overjet and occlusion conditions. This digital method not only improves the efficiency of data acquisition but also avoids the errors caused by traditional impressions, providing a reliable data basis for the subsequent orthodontic appliance design.

[0028] S20. Determine at least the overbite value, overjet value, and occlusal plane based on the digital dental model, and the required intrusion amount determined according to the overbite value; In this embodiment, determining at least the overbite value, overjet value, and occlusal plane based on the digital dental model, and the required intrusion amount determined according to the overbite value is specifically achieved by analyzing the contact relationship between the upper and lower anterior teeth in the model to calculate the overbite value, that is, the vertical overlapping distance of the upper anterior teeth covering the lower anterior teeth. Then, by extracting the key points of the molars and incisors on both sides in the model, the occlusal plane is determined, which reflects the occlusal contact state of the upper and lower dental arches. At the same time, according to the overbite value and the treatment goal of the patient, the required intrusion amount is calculated, which represents the distance that the upper anterior teeth need to move vertically downward to achieve an ideal occlusion relationship. Through this analysis, doctors can accurately grasp the degree of deep overbite of the patient and the anterior tooth adjustment requirements, providing data support for the next orthodontic appliance design.

[0029] S40. Determine a preset intrusion amount, and determine whether to perform a staged intrusion operation according to the second comparison result between the preset intrusion amount and the required intrusion amount. If the staged intrusion operation is performed, determine the intrusion amount for each stage in the staged intrusion operation, where the stage intrusion amount can be dynamically adjusted based on the user interaction window; In this embodiment, determining a preset overjet threshold and determining the corresponding intrusion platform type according to the first comparison result between the preset overjet threshold and the overjet value is specifically achieved by the system presetting a reference overjet threshold, such as 6 mm. When the overjet value is less than this threshold, the system automatically selects a triangular intrusion platform because its design is suitable for relatively mild deep overbite problems of patients and can concentrate the force on the incisor area; when the overjet value is greater than or equal to this threshold, an airplane-shaped intrusion platform is selected, which has a more stable structure and can effectively disperse the larger occlusal pressure. Through this comparison and judgment, different types of patient needs can be flexibly matched, optimizing the treatment effect and improving the mechanical stability of the orthodontic appliance.

[0030] S30. Determine a preset overjet threshold, and determine the corresponding intrusion platform type according to the first comparison result between the preset overjet threshold and the overjet value; In this embodiment, a preset depression amount is determined, and based on a second comparison result between the preset depression amount and the required depression amount, it is determined whether to perform a staged depression operation, specifically by comparing the required depression amount with a single depression safety value set by the system. For example, the system sets the preset depression amount to 2mm. If the required depression amount exceeds this value, such as a 4mm depression, the system will divide the operation into two stages, with a 2mm depression in each stage. In the staged operation, the depression amount in each stage can be dynamically adjusted through the user interaction window to ensure that the appliance can effectively act on the teeth in actual use, and will not cause discomfort or treatment failure due to excessive depression at one time.

[0031] S50, constructing a corresponding platform model according to the depression platform type and occlusal plane, and the required depression amount or stage depression amount; In this embodiment, the corresponding platform model is constructed according to the type of depression platform and the occlusal plane, as well as the required depression amount or stage depression amount. Specifically, the modeling and design is performed by combining the patient's occlusal plane data, the type of depression platform and the required depression amount. For example, for the triangular depression platform, the depression platform will be symmetrically set on the two middle incisors in the incisor area during design to ensure that its bottom surface is parallel to the occlusal plane; for the airplane-shaped depression platform, it will be extended to the molar area, and two-wing structures will be added to disperse the occlusal pressure. This targeted design enables the appliance to play the best role in deep overbite correction, which not only meets the depression requirements, but also ensures the stability and durability of the appliance.

[0032] S60, adding the platform model to the digital dental model, generating a corresponding target tooth model, and manufacturing an orthodontic appliance based on the target tooth model.

[0033] In this embodiment, the platform model is added to the digital dental model to generate the corresponding target tooth model, and the orthodontic appliance is made based on the target tooth model. Specifically, the designed platform model is three-dimensionally integrated with the digital dental model to generate the target tooth model. Subsequently, the target tooth model is made using high-precision 3D printing technology, and the invisible braces are made on the model using a hot pressing process. The hot-pressed braces can accurately fit the patient's tooth morphology and apply the designed depression force to gradually move the front teeth to the target position, thereby achieving the purpose of improving deep overbite. This production process ensures the functionality and personalized design of the appliance, allowing patients to have an efficient and comfortable orthodontic experience.

[0034] Preferably, in orthodontic treatment, the overjet value and the overbite value are two important parameters used to describe the occlusal relationship of teeth. The overjet value L1 generally refers to the horizontal overjet degree between the upper and lower rows of teeth, that is, the horizontal overjet amount of the upper anterior teeth relative to the lower anterior teeth. For example, if the incisal edge of the upper anterior teeth horizontally overjets the incisal edge of the lower anterior teeth by a certain distance, this distance is the overjet value L1. In some cases, this value is also related to the horizontal deviation in the occlusal relationship (such as excessive protrusion of the anterior teeth). The overbite value L2 generally refers to the vertical overjet degree between the upper and lower rows of teeth, that is, the vertical distance by which the upper anterior teeth cover the lower anterior teeth (i.e., "deep overbite"). Specifically, the overbite value L2 describes the vertical depth by which the upper anterior teeth cover the lower anterior teeth when the upper and lower teeth are in occlusion. When the overbite value L2 is large, it means that the overlap between the upper and lower teeth is deeper, and the patient has a deep overbite condition, which often needs to be corrected through orthodontic treatment. In orthodontic treatment, the overbite value is more directly related to the vertical occlusal relationship, and the purpose of designing the intrusion platform is to open the bite by adjusting the vertical position of the upper anterior teeth. To achieve an accurate intrusion effect, choosing the overbite value as a basis helps to ensure the accuracy and effectiveness of the treatment; The required intrusion amount, which will be described using the intrusion amount hereinafter, refers to the vertical distance by which the anterior teeth need to be intruded in orthodontic treatment, especially when designing an appliance for improving deep overbite. It refers to the vertical pressure applied to the upper anterior teeth through the appliance or other auxiliary devices, causing the upper anterior teeth to gradually move downward, thereby reducing the overlap between the upper and lower anterior teeth and improving the problem of deep overbite. Moreover, the intrusion amount can be actively set. In orthodontic treatment, the doctor designs the appliance and sets the amount that needs to be intruded according to the specific conditions of the patient (such as the occlusal relationship, the overjet degree of the anterior teeth, the degree of deep overbite, etc.).

[0035] In summary, this application makes full use of digital technology, first obtains the patient's digital dental and maxillary model, and performs a refined analysis on it to clarify key parameters such as the overbite value, occlusal plane, and required depression amount. These parameters provide a scientific basis for the design of the appliance, ensuring that the design can meet the actual needs of the patient, introduces a preset overbite threshold and required depression amount, and compares and analyzes the actual situation of the patient, so as to dynamically determine the type of depression platform and whether the depression operation needs to be performed in stages. If depression is required in stages, the depression amount of each stage is clearly specified in the design, and dynamic adjustment is allowed through the user interaction window. This flexibility significantly improves the accuracy of appliance design and treatment. In addition, the scheme combines the required depression amount or stage depression amount with the depression platform type and occlusal plane to construct the corresponding platform model, and then adds the platform model to the digital dental and maxillary model to generate the target tooth model; through this refined and dynamically adjusted design method, not only can personalized correction schemes be provided for patients with different degrees of overbite, but also the precise control of the depression amount can be ensured, thereby avoiding the repeated adjustment problem caused by inaccurate depression in traditional methods. At the same time, this method uses digital modeling and platform design to transform complex mechanical requirements into precise and executable models, greatly improving the effectiveness and efficiency of the appliance in occlusal adjustment. Ultimately, by controlling the details of the appliance, the accuracy and efficiency bottlenecks in traditional orthodontic treatment were effectively solved, making the operation of bite opening and anterior tooth lowering more scientific and reasonable.

[0036] In one embodiment, if Figure 2 As shown, in step S20, i.e., the step of determining at least the overbite value, the overjet value and the occlusal plane according to the digital dental model, and determining the required depression amount according to the overbite value, includes: S201, determining the overbite value and required depression amount according to the digital dental model; In this embodiment, the overbite value and the required depression amount are determined based on the digital dental model. Specifically, the overbite value refers to the vertical distance that the upper front teeth cover the lower front teeth, which directly reflects the severity of the patient's deep overbite. Through the three-dimensional digital dental model, an automated measurement tool is used to accurately measure the vertical overlap of the upper and lower front teeth, and generate numerical overbite data. The required depression amount is the specific distance that the front teeth need to be moved downward, calculated by an algorithm based on the overbite value and the patient's expected occlusion target. For example, if the overbite value is 5mm, and the target occlusion is to reduce the overbite to 2mm, the required depression amount is 3mm. In this way, not only can the patient's treatment needs be quantified, but also specific parameters are provided for the subsequent orthodontic appliance design to ensure the scientificity and accuracy of the treatment plan.

[0037] S202. Segment the maxillary dentition model included in the digital dental cast model to generate multiple single-tooth digital tooth models. In this embodiment, to segment the maxillary dentition model included in the digital dental cast model and generate multiple single-tooth digital tooth models, specifically, a 3D modeling software is used to segment the maxillary dentition, and the complete dentition is decomposed into individual tooth models. Each tooth model retains information such as its three-dimensional shape, position, and surface texture, and at the same time is consistent with the coordinate system of the overall model. In this way, the segmented single-tooth models are convenient for adjusting the position and angle of each tooth separately, and support the subsequent identification and refined design of key teeth (such as molars and incisors). For example, in a maxillary dentition model of a patient, 12 teeth are segmented into independent single-tooth models, and doctors can analyze the role of each tooth in the occlusal plane separately.

[0038] S203. Screen out molar models and incisor models from the multiple single-tooth digital tooth models. In this embodiment, to screen out molar models and incisor models from the multiple single-tooth digital tooth models, specifically, a system algorithm automatically identifies molar and incisor models based on the anatomical features (such as crown shape, tooth size, etc.) and position markers of the teeth. For example, molar models have morphological features of a larger crown and multiple cusps, while incisor models are characterized by a smaller crown and a blade-like incisal edge. The screened molar models and incisor models will play a key role in the subsequent determination of the occlusal plane and the design of the intrusion area. This screening method ensures that the orthodontic appliance design can focus on functional teeth and improve the treatment effect.

[0039] S204. Classify each molar model to generate bilateral molar model clusters. In this embodiment, to classify each molar model to generate bilateral molar model clusters, specifically, according to the midline in the digital dental cast model, the screened molar models are divided into two groups, left and right, to form bilateral molar model clusters. Each group of molars is arranged in the order from mesial to distal, ensuring the logic and clarity of the data structure. For example, in a group of digital dental cast models, the left molar models include the first molar and the second molar, and the right molar models also include the corresponding first molar and the second molar. Through this grouping, the spatial relationship between the left and right molars can be processed independently, improving the accuracy of occlusal plane definition.

[0040] S205. Determine the highest point of the mesial lingual cusp of each side's molar model cluster as the first highest point. In this embodiment, the highest point of the mesial lingual cusp of each molar model cluster on each side is determined as the first highest point. Specifically, by analyzing the lingual surface shape of each molar model through an algorithm, the cusp point closer to the midline is found, and its highest point is identified as the first highest point. For example, the highest points of the mesial lingual cusps of the first molars in the left molar cluster and the first molars in the right molar cluster are respectively marked as two first highest points. Through this operation, the key positions related to the occlusal plane can be accurately captured, improving the accuracy of the subsequent occlusal plane.

[0041] S206. Determine the two incisor models at the most middle position between the molar model clusters on both sides as the target models, and determine the mesial incisal points of the two target models as the second highest points; In this embodiment, the two incisor models at the most middle position between the molar model clusters on both sides are determined as the target models, and the mesial incisal points of the two target models are determined as the second highest points. Specifically, by using a screening algorithm, the two incisor models closest to the midline between the left and right molar clusters are selected, and the mesial incisal point positions of them are further extracted as the second highest points. For example, in a digital dental cast model, teeth 11 and 21 are selected as the target incisor models, and their mesial incisal points are determined as the key points. Through this step, the position information of the incisors can be incorporated into the definition of the occlusal plane, ensuring the balance and functionality of the plane.

[0042] S207. Determine the corresponding occlusal plane according to the second highest points and the two first highest points.

[0043] In this embodiment, the corresponding occlusal plane is determined according to the second highest points and the two first highest points. Specifically, the first highest points of the molars on both sides and the second highest points of the two incisors are fitted into a smooth occlusal plane through a geometric algorithm. This occlusal plane takes into account both the occlusal contact points of the molars and the positional relationship of the incisors, thus being able to truly reflect the actual occlusal state of the patient's upper and lower dental arches. For example, the occlusal plane generated by the fitting algorithm can be used for orthodontic appliance design, enabling it to effectively adjust the patient's deep overbite during the correction process and gradually improve the occlusal relationship of the upper and lower dental arches.

[0044] Preferably, in the overall dental arch model, all the teeth are combined together, and it is not easy to clearly define the relative positions and contact relationships between single teeth and other teeth. By separating each tooth, the contact points of each tooth with the occlusal plane can be seen more clearly. By individually modeling each tooth, fine adjustments can be made according to the shape, position, and occlusal relationship of each tooth. Especially in the design of invisible orthodontic appliances, the orthodontic requirements of anterior teeth and posterior teeth are different. The single-tooth model enables the design to be more personalized and precise. The occlusal plane is not only based on the overall position of the dental arch, but also on the minute differences and arrangements of each tooth in the vertical direction. Through the digital modeling of single teeth, the position of each tooth in the occlusal plane can be accurately calculated, thereby more precisely defining the overall occlusal plane. The first highest point, usually located in the molar regions on both sides of the maxillary dental arch, is a symmetrically set point. By determining the position of this point, the vertical height differences between the two dental arches can be accurately grasped. The first highest point in the molar region helps define the height of the maxillary dental arch in the occlusal plane. At the same time, it can play a calibration role to ensure the balance of the two sides of the dental arch in the vertical direction. The second highest point is usually located at the middle position between the two molars, that is, the mesial incisal points of the two target incisor models in the incisor region. It represents the height of the maxillary dental arch in the middle part and can provide a central reference point for the entire dental arch to ensure the accurate alignment of the occlusal position and angle of the upper and lower dental arches. By combining these three points, the position of the entire dental arch in the occlusal plane can be calculated more precisely. Because the position of each tooth is affected not only by its own vertical position, but also by the relationships and spaces of adjacent teeth. In digital modeling, the first highest point and the second highest point help define an occlusal plane with high accuracy through the setting of symmetry and relative position relationships. In addition, when determining the occlusal plane, the maxillary dental arch model is usually the main one because the maxillary dental arch is relatively fixed and not prone to large-scale movement. Especially when determining the occlusal plane, the positioning of the maxillary dental arch can be used as a reference. The positions and shapes of maxillary teeth are more stable than those of mandibular teeth in most cases. Especially during the orthodontic treatment process, many adjustments are carried out around the maxillary dental arch.

[0045] In summary, through the precise analysis of the digital dental arch model, single-tooth models can be segmented and generated, and molar and incisor models can be screened out. By combining the highest points of the mesial lingual cusps of each molar and the mesial incisal points of incisors, the occlusal plane can be accurately determined. This method optimizes the definition process of the occlusal plane, improves the scientific and personalized level of orthodontic appliance design, and ensures stronger treatment pertinence.

[0046] In one embodiment, as Figure 3 shown, in step S30, that is, in the step of determining the corresponding intrusion platform type according to the comparison result between the preset coverage threshold and the coverage value, it includes: S301. Determine whether the overjet value is less than a preset overjet threshold; In this embodiment, to determine whether the overjet value is less than the preset overjet threshold, specifically, the overjet value is the horizontal distance from the incisal edge of the maxillary anterior teeth to the labial surface of the mandibular anterior teeth accurately measured from the digital dental model, which is used to quantify the severity of deep overbite. The preset overjet threshold is a reference value set by the system based on a large amount of clinical data and treatment experience, and is usually used to distinguish overjet problems of different severities. By comparing the actual overjet value of the patient with the preset overjet threshold, the system can quickly determine whether the patient's condition belongs to mild or severe overjet. For example, when the preset overjet threshold is set to 6 mm, if the patient's overjet value is 5 mm, the system determines that its overjet value is less than the preset overjet threshold. The technical effect of this step is that it can accurately provide a scientific basis for the selection of the subsequent intrusion platform type through rapid comparison.

[0047] S302. If it is less than the preset overjet threshold, determine that the intrusion platform type is a triangular intrusion platform; In this embodiment, if the overjet value is less than the preset overjet threshold, determine that the intrusion platform type is a triangular intrusion platform. Specifically, the triangular intrusion platform is a simple and applicable intrusion structure for mild overjet problems. Its shape is a symmetric triangular structure located in the incisor area of the upper anterior teeth, and the bottom surface is parallel to the occlusal plane, which can accurately apply force to the incisor area to help the upper anterior teeth move slightly in the vertical direction. This structure focuses on the concentration of local forces in design. By reducing the force application range, it can better protect other tooth areas and avoid unnecessary interference in irrelevant parts. For example, for a patient with an overjet value of 5 mm, the system will automatically select a triangular intrusion platform, and this design can effectively complete 2 mm of intrusion operation, which not only meets the orthodontic requirements but also maintains the platform stability.

[0048] S303. If it is not less than the preset overjet threshold, determine that the intrusion platform type is an airplane-shaped intrusion platform.

[0049] In this embodiment, if the overjet value is not less than the preset overjet threshold, the type of intrusion platform is determined to be an airplane-shaped intrusion platform. Specifically, the airplane-shaped intrusion platform is a special platform design suitable for severe overjet problems. Its shape includes a long strip platform in the center and wing-shaped structures extending on both sides. This structure has a wider coverage range, can disperse a large vertical intrusion force, and is suitable for the situation where the patient needs a larger intrusion amount. The long strip platform mainly acts on the central incisor area, and the two wings extend to the adjacent molar areas, keeping parallel to the occlusal plane to ensure a uniformly distributed mechanical effect. This design can effectively avoid the damage of the appliance caused by single-point force, and at the same time enhance the stability and durability of the platform. For example, for a patient with an overjet value of 8 mm, the system will select an airplane-shaped intrusion platform. Through the distributed force design, while achieving a large degree of intrusion of the anterior teeth, it reduces the wearing pressure and discomfort of the patient. The technical effect of this step is to meet the personalized needs of different patients by selecting the appropriate type of intrusion platform, and improve the orthodontic efficiency and stability of the appliance under various overjet degrees.

[0050] In summary, the triangular intrusion platform or the airplane-shaped intrusion platform can be dynamically selected as the type of intrusion platform according to the comparison between the overjet value and the preset overjet threshold. Through this hierarchical selection mechanism, it is ensured that the type of intrusion platform can accurately adapt to different degrees of overjet, thereby optimizing the mechanical transmission effect and improving the stability and effectiveness of the appliance when intruding the anterior teeth and opening the bite.

[0051] In one embodiment, as Figure 4 and Figure 10 shown, in step S50, that is, in the step of constructing a corresponding platform model according to the type of intrusion platform, the occlusal plane, and the required intrusion amount or the staged intrusion amount, it includes: S521. If the type of intrusion platform is a triangular intrusion platform, a first initial platform model is constructed in the incisor area of the maxillary dentition model of the digital dental model. The incisor area includes four incisor models arranged in sequence. The first initial platform model is symmetrically arranged on the two middle incisor models, and the bottom surface of the first initial platform model is parallel to the occlusal plane; In this embodiment, if the type of the intrusion platform is a triangular intrusion platform, a first initial platform model is constructed in the incisor region of the maxillary dentition model of the digital dental cast. Specifically, the incisor region refers to the four incisor models in the anterior tooth part of the digital dental cast, and these incisor models are arranged in sequence according to their anatomical positions in the anterior part of the maxilla. The first initial platform model is a geometric structure symmetrically arranged, and its design is located on the two middle incisor models and is parallel to the occlusal plane. This geometric design can ensure the mechanical uniformity of the intrusion platform, make the acting force concentrated on the anterior tooth region that needs to be adjusted, so as to achieve the effect of precise correction. For example, for a patient with a low overjet value, constructing a symmetric triangular initial platform can ensure that the pressure is distributed on the two middle incisors, effectively pushing the upper anterior teeth downward.

[0052] S522. According to the required intrusion amount L 0 or the stage intrusion amount L n , a triangular platform model is constructed on the basis of the first initial platform model.

[0053] In this embodiment, according to the required intrusion amount or the stage intrusion amount, a triangular platform model is constructed on the basis of the first initial platform model. Specifically, the required intrusion amount refers to the total amount that the anterior teeth need to move in the vertical direction, and the stage intrusion amount is the single movement amount after dividing the required intrusion amount into multiple stages to meet the treatment safety and comfort. According to the above intrusion amount, the size and angle of the first initial platform model are adjusted, and finally a triangular platform model is formed. Through the optimized shape and position, this model can precisely control the acting force of the platform, so as to achieve precise intrusion of the incisor region. For example, when the required intrusion amount is 2 mm, the triangular platform model will concentrate the acting point and pressure on the incisal edge of the anterior tooth segment of the appliance, and further optimize the treatment effect through stage adjustment. This design not only ensures the effectiveness of the treatment, but also avoids discomfort or tooth damage caused by excessive intrusion at one time.

[0054] In summary, a symmetrically distributed first initial platform model can be constructed in the incisor region according to the type of the intrusion platform, the occlusal plane, and the required intrusion amount or the stage intrusion amount, and it is ensured that its bottom surface is parallel to the occlusal plane. On this basis, it is further optimized into a triangular platform model to precisely achieve uniform distribution of force and intrusion effect, and improve the applicability and mechanical stability of the appliance in the treatment of deep overbite.

[0055] In one embodiment, as Figure 5 shown, in step S522, that is, according to the required intrusion amount L 0 or the stage intrusion amount L n , in the step of constructing a triangular platform model on the basis of the first initial platform model, it includes: S5221. Obtain the thickness H of the dental appliance; S5222. Determine the anterior and posterior tooth opening parameter k based on the digital dental model; S5223. Determine the overbite value L a ; S5224. Calculate the first parallel extension distance O based on the first initial platform model n1 , and the calculation formula is: O n1 = L a - H×k + L 0 or O n1 = L a - H×k + L n ; S5225. Based on the first parallel extension distance O n1 , construct a triangular platform model on the basis of the first initial platform model.

[0056] Specifically, the thickness of the dental appliance itself directly affects the spacing and occlusal contact between teeth. Ignoring the thickness of the dental appliance leads to inaccuracy in the mechanical model during the design of the orthodontic appliance, which in turn affects the actual effect of intrusion. Incorporating the thickness H of the dental appliance into the calculation can accurately evaluate the occlusal state of the teeth after wearing the orthodontic appliance, ensuring that the designed triangular platform model can effectively apply force without deviating from the treatment goal. For example, if the dental appliance is thicker, the platform design needs to be adjusted appropriately to avoid excessive or insufficient intrusion; the anterior and posterior tooth opening parameter k is an important parameter for measuring the need for occlusal adjustment and is used to determine the mechanical balance relationship between the anterior and posterior teeth. Ignoring this parameter results in the inability to achieve the ideal occlusal adjustment effect during the use of the orthodontic appliance. The anterior and posterior tooth opening parameter k reflects the relationship between the occlusal plane and the teeth, ensuring that the contact relationship between the upper and lower dental arches can be improved while applying the intrusion force. For example, in cases of deep overbite, a reasonable value of k can prevent the posterior teeth from being too tightly occluded or the anterior teeth from being insufficiently intruded; the overbite value directly quantifies the vertical overlap of the upper anterior teeth covering the lower anterior teeth and is the core index for evaluating the severity of deep overbite. Without this data, it is impossible to determine the specific amount of intrusion required. By using the accurate overbite value, the amount of intrusion that meets the treatment goal can be designed, thus avoiding repeated adjustments due to excessive or insufficient intrusion during the treatment process. For example, if the overbite value is 6 mm and the target overbite is 2 mm, the required amount of intrusion is 4 mm, which guides the optimal design of the triangular platform model; these data work together to ensure that the triangular platform model can be accurately designed, apply force reasonably, and fit closely. Each data plays a key role in a specific aspect, from the need for occlusal adjustment (overbite value, anterior and posterior tooth opening parameter k) to the actual physical limitations (thickness H of the dental appliance), and then to the precise spatial positioning (extension distance calculation), ultimately achieving the scientific nature and efficiency of the treatment process. This data-driven design method solves many uncertainty problems in traditional intrusion techniques and ensures personalized orthodontic effects.

[0057] Preferably, the anterior and posterior tooth opening parameter is an important parameter for adjusting and controlling the position of the occlusal plane and the relative relationship between the upper and lower anterior teeth. In invisible orthodontics, the anterior and posterior tooth opening parameter is usually determined according to the patient's specific occlusion, treatment goals, and individual needs. This parameter affects the space size between the anterior and posterior teeth. That is to say, the setting of the anterior and posterior tooth opening parameter will affect the contact relationship between the anterior and posterior teeth, thereby determining to a certain extent the depth of occlusion and the movement amount of the anterior teeth. The digital dental model is generated through 3D scanning or digital impression technology, providing detailed data on the patient's upper and lower dental arches and occlusion status. By analyzing the digital dental model, the doctor can clearly judge whether the patient has problems such as deep overbite, open bite, crossbite, etc. Especially in the case of deep overbite, the digital model helps the doctor see the overlapping degree of the upper and lower anterior teeth, the contact relationship between the anterior and posterior teeth, etc. Through the digital model, the relative positions of the upper and lower anterior and posterior teeth can be measured. For example, the doctor can measure the contact point between the upper anterior tooth and the lower anterior tooth, the overjet depth of the upper and lower anterior teeth, the crossing degree of the upper and lower dental arches, etc. Through the digital model, the relative positions of the upper and lower anterior and posterior teeth can be measured. For example, the doctor can measure the contact point between the upper anterior tooth and the lower anterior tooth, the overjet depth of the upper and lower anterior teeth, the crossing degree of the upper and lower dental arches, etc. According to the patient's specific treatment needs, the doctor sets the anterior and posterior tooth opening parameter to determine the occlusion depth and angle that need to be adjusted. Then, using simulation software for design, the doctor can adjust the relative positions of the anterior and posterior teeth in real time according to the digital model and accurately calculate the anterior and posterior tooth opening parameter. The software can automatically analyze factors such as the intrusion amount of the upper and lower anterior teeth and the space adjustment between the anterior and posterior teeth, and provide the optimal orthodontic treatment plan.

[0058] In summary, it is possible to accurately calculate the distance beyond the near-lingual margin of the incisor region by obtaining the thickness H of the dental appliance, determining the anterior and posterior tooth opening parameter k, and the overbite value. On this basis, according to the calculation results, the triangular platform model is optimized and constructed to make the platform model more in line with the actual needs of the patient, ensuring that the design of the platform achieves the best effect in terms of mechanical distribution and spatial layout, thereby improving the accuracy and treatment efficiency of the orthodontic appliance.

[0059] In one embodiment, as Figure 6 and Figure 11 shown, in step S50, that is, in the step of constructing the corresponding platform model according to the type of intrusion platform, the occlusal plane, and the required intrusion amount or the staged intrusion amount, it includes: S531. If the type of the intrusion platform is an aircraft-shaped intrusion platform, a second initial platform model is constructed in the incisor region of the maxillary dentition model of the digital dental cast. The incisor region includes four incisor models arranged in sequence. The intrusion platform in the second initial platform model is symmetrically disposed on the two middle incisor models. The two wings in the second initial platform model are in contact with the molar region or the canine region of the maxillary dentition model of the digital dental cast, and the bottom surface of the second initial platform model is parallel to the occlusal plane. In this embodiment, if the type of the intrusion platform is an aircraft-shaped intrusion platform, a second initial platform model is constructed in the incisor region of the maxillary dentition model of the digital dental cast. Specifically, the incisor region refers to the region of the four anterior incisors in the maxillary dentition model, including the two middle central incisors and the lateral incisors on both sides. The second initial platform model is a basic geometric structure, and the intrusion platform therein is symmetrically arranged on the two middle incisor models to ensure the uniformity of the mechanical action. The two wing parts extend to the molar region and fit well with the anatomical structure of the entire dentition. At the same time, the bottom surface of the platform is parallel to the occlusal plane to ensure the stability and comfort of the appliance during wearing. For example, when a patient has a deep overjet, constructing the second initial platform model can provide sufficient supporting mechanical structure to ensure that the subsequent intrusion operation can disperse the occlusal force and prevent discomfort or appliance breakage caused by concentrated force.

[0060] S532. According to the required intrusion amount L 0 or the staged intrusion amount L n , an aircraft platform model is constructed on the basis of the second initial platform model.

[0061] In this embodiment, an aircraft platform model is constructed on the basis of the second initial platform model according to the required intrusion amount or the staged intrusion amount. Specifically, the required intrusion amount refers to the total distance that the anterior teeth need to move downward, and the staged intrusion amount is the specific amount of single movement when the required intrusion amount is executed in stages. The design of the aircraft platform model is to further adjust the height and extension range of the platform on the basis of the second initial platform model according to the required intrusion amount or the staged intrusion amount. Its central part is located in the incisor region and is in contact with the molar region through the two wing structures to disperse the concentrated action of the intrusion force and improve the overall stability of the platform. For example, for a patient with a required intrusion amount of 4 mm, the aircraft platform model will be gradually adjusted according to the staged intrusion amount (such as 2 mm each time) to ensure that the platform model can not only achieve the intrusion goal but also avoid discomfort or tooth damage caused by excessive force during the orthodontic treatment. This design can effectively deal with severe cases and achieve accurate and stable treatment effects through optimized mechanical distribution.

[0062] In summary, according to the characteristics of the aircraft-shaped depression platform, the second initial platform model can be accurately constructed in the incisor area of the digital dental model, ensuring that the depression platforms are symmetrically distributed on the two middle incisor models, while the two wings are in contact with the molar area and parallel to the occlusal plane. On this basis, combined with the required depression amount or the staged depression amount, it is further optimized into an aircraft platform model, enabling it to more effectively disperse mechanical pressure under the condition of deep overbite, enhancing the stability and durability of the appliance, and thus improving the overall effect of depression and occlusal adjustment.

[0063] In one embodiment, as Figure 7 shown, in step S532, that is, according to the required depression amount L 0 or the staged depression amount L n , in the step of constructing the aircraft platform model based on the second initial platform model, it includes: S5321. Obtain the thickness H of the dental appliance; S5322. Determine the anterior and posterior tooth opening parameter k according to the digital dental model; S5323. Determine the overbite value L a ; S5324. Calculate the second parallel extension distance O n2 based on the second initial platform model, and the calculation formula is: O n2 =L a -H× k+L 0 or O n2 =L a -H×k+L n ; S5325. Construct the aircraft platform model based on the second initial platform model according to the second parallel extension distance O n2 .

[0064] Specifically, it is similar to the principle of the triangular platform model above, and will not be elaborated here.

[0065] In summary, by obtaining the thickness H of the dental appliance, the anterior and posterior tooth opening parameter k, and the overbite value, the distance beyond the lingual margin of the incisor area can be accurately calculated and quantitatively analyzed using the formula. On this basis, combined with the second initial platform model, the aircraft platform model is optimized and constructed to make it fit the patient's digital dental model more precisely. This design ensures the rationality of the mechanical distribution of the depression operation and the stability of the platform structure, effectively improving the accuracy and durability of the appliance in the treatment of deep overbite.

[0066] In one embodiment, as Figure 8As shown, in step S50, that is, in the step of constructing a corresponding platform model according to the type of intrusion platform, the occlusal plane, and the required intrusion amount or the staged intrusion amount, it further includes: S541. Perform an intrusion amount simulation operation to obtain a corresponding simulated intrusion amount; In this embodiment, performing an intrusion amount simulation operation to obtain a corresponding simulated intrusion amount. Specifically, the intrusion amount simulation operation refers to a virtual intrusion process using a digital dental model, and the actual movement of the anterior teeth and the tooth force distribution under different intrusion amounts are simulated through orthodontic software. The result of the simulation operation can provide an estimated value of the intrusion effect based on the current design, that is, the simulated intrusion amount. Through this process, the rationality of the design can be verified, and potential problems can be discovered in advance, avoiding ineffective intrusion or excessive force application caused by design deviations in actual orthodontics. For example, if the required intrusion amount is 3 mm, through the simulation operation, it can be confirmed whether the designed platform can achieve this movement amount and ensure that the teeth maintain a uniform mechanical distribution during the intrusion process.

[0067] S542. If the first parallel extension distance O is calculated according to the required intrusion amount L 0 or the second parallel extension distance O n1 then, according to the third comparison result between the simulated intrusion amount and the required intrusion amount, it is determined whether to construct a corresponding platform model; in this embodiment, if the first parallel extension distance O is calculated according to the required intrusion amount n2 or the second parallel extension distance O n1 then, according to the third comparison result between the simulated intrusion amount and the required intrusion amount, it is determined whether to construct a corresponding platform model. Specifically, the required intrusion amount is the vertical movement distance that the design aims to achieve, and the simulated intrusion amount is the actual estimated intrusion value obtained through the intrusion amount simulation operation. The third comparison result is to perform a difference analysis on the two to evaluate whether the design meets the requirements of the required intrusion amount. Through this comparison, it can be decided whether the platform model needs to be readjusted or optimized. For example, if the required intrusion amount is 3 mm and the simulated intrusion amount is 2.8 mm, the system will judge whether the design error is within the acceptable range according to the comparison result. If the requirements are met, the platform model will be constructed; otherwise, the design will be adjusted to achieve a more accurate intrusion effect. n2

[0068] S543. If the first parallel extension distance O is calculated according to the staged intrusion amount L n or the second parallel extension distance O n1 then, according to the fourth comparison result between the simulated intrusion amount and the staged intrusion amount, it is determined whether to continue the staged intrusion operation. If not, the corresponding platform model is directly constructed. n2

[0069] ​​In this embodiment, if the first parallel extension distance O is calculated according to the stage depression amount n1 or the second parallel extension distance O n2 , then, according to the fourth comparison result of the simulated depression amount and the stage depression amount, it is determined whether to continue the staged depression operation. If not, the corresponding platform model is directly constructed. Specifically, the stage depression amount is the single depression amount when the total required depression amount is executed in multiple stages, and the simulated depression amount is the actual estimated value designed in stages. The fourth comparison result evaluates whether each stage reaches the design goal by comparing the simulated depression amount with the stage depression amount, and determines whether it is necessary to continue the depression design of the next stage. If the comparison result shows that the design meets the standard, the system will directly complete the construction of the platform model; if not, it is determined whether it is necessary to adjust the stage design to meet the depression requirement. For example, in a case where the required depression amount is 6 mm, the design is divided into three-stage operations of 2 mm each time. If the simulated depression amount in the second stage is 1.8 mm, the system will determine whether to adjust the design parameters of the third stage to ensure that the total depression amount reaches the goal. This mechanism can dynamically adjust the depression design to ensure the precise execution of each stage and the achievement of the overall treatment effect.

[0070] In summary, it is possible to obtain the simulated depression amount through the execution of the depression amount simulation operation, and compare and analyze it with the required depression amount or the stage depression amount, so as to accurately judge whether it is necessary to construct the corresponding platform model or continue the staged depression operation. This method uses the verification mechanism of the simulated depression amount to effectively improve the accuracy of the platform model design, ensure that while meeting the depression requirement, the mechanical structure of the orthodontic appliance is optimized, thereby avoiding problems such as treatment delay or poor effect caused by design deviation.

[0071] In one embodiment, as Figure 9 shown, after step S543, that is, after the step of determining whether to continue the staged depression operation, if not, directly constructing the corresponding platform model, it further includes: S544. If continuing the staged depression operation, determine whether to push the corresponding user interaction window; In this embodiment, if continuing the staged depression operation, determine whether to push the corresponding user interaction window. Specifically, the staged depression operation refers to splitting the required depression amount into multiple stages, and performing a single depression adjustment for each stage to ensure safety and treatment comfort. The push of the user interaction window is to introduce the real-time judgment of the doctor or the feedback of the patient during the treatment process to adjust the setting of the stage depression amount. This mechanism enables the design to combine dynamic input data and improve the personalization of the depression design. For example, in a case where the required depression amount is 4 mm, the system plans to divide it into two stages, with a depression of 2 mm each time. If the actual effect does not meet the expectation, the system can let the doctor adjust the stage depression amount through the interaction window to adapt to the special needs of the patient or the clinical feedback.

[0072] S545. If the corresponding user interaction window is not pushed, determine the new stage depression amount according to the staged depression operation, and then obtain a new fourth comparison result for re-judgment; In this embodiment, if the corresponding user interaction window is not pushed, determine the new stage depression amount according to the staged depression operation, and then obtain a new fourth comparison result for re-judgment. Specifically, in the case where the interaction window is not pushed, the system will automatically adjust the depression amount of the current stage according to the setting of the staged depression operation. For example, in the second-stage depression plan, if the error between the simulated depression amount and the target stage depression amount is large, the system will automatically calculate and re-allocate the depression amount to ensure the accuracy of subsequent stages. The new fourth comparison result refers to the judgment based on the difference between the adjusted stage depression amount and the simulated depression amount, ensuring that the depression effect of each stage can be within a reasonable error range. For example, in a case with three stages, if the depression amounts in the first two stages are insufficient, the system can automatically adjust the third stage to a higher depression amount to ensure that the total required depression amount is achieved.

[0073] S546. If the corresponding user interaction window is pushed, determine the adjusted stage depression amount according to the user interaction window, and then obtain a new fourth comparison result for re-judgment based on the adjusted stage depression amount.

[0074] In this embodiment, if the corresponding user interaction window is pushed, determine the adjusted stage depression amount according to the user interaction window, and then obtain a new fourth comparison result for re-judgment based on the adjusted stage depression amount. Specifically, after the user interaction window is pushed, the doctor or patient can manually adjust the stage depression amount according to the real-time feedback. For example, the doctor can adjust the original planned stage depression amount from 2 mm to 1.5 mm according to the comfort of the patient wearing the appliance or the actual depression effect, reducing discomfort while gradually achieving the depression target. Based on the adjusted stage depression amount, the system will recalculate and generate a new fourth comparison result to judge whether further optimization or the implementation of the next stage of the depression design is required. This interaction mechanism can flexibly adapt to clinical complexity and individual differences, significantly improving the controllability and treatment effect of the orthodontic treatment plan.

[0075] In summary, it is possible to dynamically adjust the stage depression amount during the staged depression operation, and flexibly optimize the design process of the appliance by judging whether to push the user interaction window. When the interaction window is not pushed, the system can automatically adjust the new stage depression amount based on the staged depression operation and obtain an updated comparison result; when the interaction window is pushed, the stage depression amount is further adjusted in combination with the user's interaction input. This design improves the flexibility and accuracy of the operation, ensures that the appliance meets the depression requirements while adapting to the personalized treatment needs of the patient, and significantly improves the precision and efficiency of the treatment.

[0076] Specifically, assume that a patient needs orthodontic treatment for precise intrusion of anterior teeth. The following are the detailed steps of the entire manufacturing process, which combines the definition of the occlusal plane and its application in treatment, and uses digital scanning technology to obtain the patient's dental arch data. The upper and lower dental arches in the patient's oral cavity are scanned by a 3D scanner to generate a digital dental arch model (including the morphology and relative positions of all teeth). This step is the basis of the treatment to ensure accurate acquisition of the patient's oral information. According to the obtained digital dental arch model, first determine the overbite value, that is, the relative relationship between the upper and lower dental arches, to ensure the docking of the upper and lower dental arches. Then, calculate the required intrusion amount, which is determined according to the patient's orthodontic needs (such as the need to intrude anterior teeth or a certain tooth). At this time, the occlusal plane is also calculated to ensure proper contact between the upper and lower dental arches. Since the occlusal plane involves the precise positions of each tooth, special attention is paid to the first highest point and the second highest point during definition, where: the first highest point is determined in the molar regions on both sides of the maxillary dental arch, which represents the vertical positions on both sides of the dental arch, and the second highest point is determined at the mesial incisal points of the two target incisor models in the incisor region, representing the vertical alignment of the maxillary dental arch in the incisor region. Through these two points, the position of the entire occlusal plane can be accurately defined, avoiding the deviation of simply using the overall height of the dental arch. Compare the overjet value with the preset overjet threshold. If the overjet value is less than the preset threshold, define the intrusion platform type as a triangular intrusion platform, which is suitable for patients with a small overjet. If the overjet value is not less than the preset threshold, define the intrusion platform type as an airplane-shaped intrusion platform, which is suitable for patients who require a large overjet. This step determines the intrusion platform type, providing a key reference for subsequent tooth orthodontics. If the intrusion platform type is an airplane-shaped intrusion platform (for example, the overbite value is large), construct a second initial platform model in the incisor region. At this time, the intrusion platform of the platform model is symmetrically arranged on the two middle incisor models, ensuring parallelism with the occlusal plane, while the two wings contact the molar regions to provide the necessary pressure guidance. At this time, according to the occlusal plane, platform type, and required intrusion amount, the constructed orthodontic platform model will be merged into the digital dental arch model. The target tooth model includes the morphology of the teeth that need to be intruded and the corresponding orthodontic platform. Based on this model, an orthodontic appliance that precisely matches the patient's oral structure is manufactured to ensure perfect contact between the platform and the teeth during treatment, providing just the right orthodontic force. Before actually manufacturing the appliance, calculate the actual intrusion amount through simulation operations. This operation simulates the movement of teeth under different intrusion amounts, thereby further verifying whether the required intrusion amount can meet the treatment goals. If the simulation shows that the mesial lingual margin in the incisor region exceeds the expected distance, compare the simulation intrusion amount with the required intrusion amount to determine whether the platform model needs to be adjusted. If adjustment is needed, redesign the platform shape to ensure the treatment effect. If a phased intrusion operation is selected, judge again whether further adjustment is needed according to the calculation results of the phased intrusion amount.If further adjustment is needed, it is determined whether to modify the model based on the stage intrusion amount and the fine-tuning result of the occlusal plane until the final treatment effect is achieved. According to the requirements of the staged intrusion operation, the patient's feedback can be obtained or the orthodontic treatment plan can be further confirmed through the user interaction window. The implementation of this step ensures the patient's sense of participation during the orthodontic treatment process. The intrusion amount is dynamically adjusted based on the feedback, and the orthodontic treatment plan is continuously updated until the most suitable orthodontic platform model is determined.

[0077] An orthodontic appliance for precisely intruding anterior teeth is manufactured using a manufacturing method for an orthodontic appliance for precisely intruding anterior teeth.

[0078] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the above-mentioned division of each functional unit and module is used as an example. In actual applications, the above-mentioned functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0079] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for manufacturing an orthodontic appliance for accurately lowering front teeth, characterized in that: The method for manufacturing an orthodontic appliance for accurately lowering front teeth comprises: Obtain the patient's digital dental model; Determine at least the overbite value, the overjet value and the occlusal plane according to the digital dental model, and determine the required depression amount according to the overbite value; Determine a preset coverage threshold, and determine a corresponding depressed platform type according to a first comparison result between the preset coverage threshold and the coverage value; Determine a preset depression amount, determine whether to perform a staged depression operation according to a second comparison result between the preset depression amount and the required depression amount, and if the staged depression operation is performed, determine a depression amount for each stage of the staged depression operation, wherein the staged depression amount can be dynamically adjusted based on the user interaction window; Constructing a corresponding platform model according to the depression platform type and the occlusal plane, and the required depression amount or stage depression amount; The platform model is added to the digital dental model to generate a corresponding target tooth model, and an orthodontic appliance is manufactured based on the target tooth model.

2. The method for manufacturing an orthodontic appliance for accurately lowering front teeth according to claim 1, characterized in that: The step of determining at least an overbite value, an overjet value and an occlusal plane according to the digital dental model, and determining a required depression amount according to the overbite value, comprises: Determine the overbite value and required depression amount according to the digital dental model; Segmenting the maxillary dentition model included in the digital dental model to generate multiple single-tooth digital tooth models; Screening out a molar model and an incisor model from the plurality of single-tooth digital tooth models; Classifying each of the molar models to generate bilateral molar model clusters; The highest point of the mesiolingual cusp of the molar model cluster on each side was determined as the first highest point; Determine the two incisor models located at the middle position between the molar model clusters on both sides as the target models, and determine the mesial contact point of the two target models as the second highest point; A corresponding occlusal plane is determined according to the second highest point and the two first highest points.

3. The method for manufacturing an orthodontic appliance for accurately lowering front teeth according to claim 1, characterized in that: The step of determining the corresponding depressed platform type according to the comparison result between the preset coverage threshold and the coverage value includes: Determine whether the coverage value is less than the preset coverage threshold; If it is less than the preset coverage threshold, determining that the depressed platform type is a triangle depressed platform; If it is not less than the preset coverage threshold, it is determined that the depressed platform type is an airplane-shaped depressed platform.

4. The method for manufacturing an orthodontic appliance for accurately lowering front teeth according to claim 3, characterized in that: The step of constructing a corresponding platform model according to the depression platform type and the occlusal plane, and the required depression amount or the stage depression amount includes: If the depression platform type is a triangular depression platform, a first initial platform model is constructed in the incisor area of ​​the maxillary dentition model of the digital dental model, wherein the incisor area includes four incisor models arranged in sequence, the first initial platform model is symmetrically arranged on the two middle incisor models, and the bottom surface of the first initial platform model is parallel to the occlusal plane; according to the required depression amount L0 or the stage depression amount L n , constructing the triangular platform model based on the first initial platform model.

5. The method for manufacturing an orthodontic appliance for accurately lowering front teeth according to claim 4, characterized in that: The amount of pressure reduction L0 or the amount of pressure reduction L in stages according to the demand n The step of constructing the triangular platform model based on the first initial platform model includes: Get the braces thickness H; Determine the front and rear teeth opening parameter k according to the digital dental jaw model; Determine the overbite value L a ; Calculate the first parallel extension distance O based on the first initial platform model n1 , the calculation formula is: O n1 =L a -H×k+L0 or O n1 =L a -H×k+L n ; According to the first parallel extension distance O n1 , constructing the triangular platform model based on the first initial platform model.

6. The method for manufacturing an orthodontic appliance for accurately lowering front teeth according to claim 3, characterized in that: The step of constructing a corresponding platform model according to the depression platform type and the occlusal plane, and the required depression amount or the stage depression amount includes: If the depression platform type is an airplane-shaped depression platform, a second initial platform model is constructed in the incisor region of the maxillary dentition model of the digital dental jaw model, the incisor region includes four incisor models arranged in sequence, the depression platform in the second initial platform model is symmetrically arranged on the two middle incisor models, the two wings in the second initial platform model are in contact with the molar region or the canine region of the maxillary dentition model of the digital dental jaw model, and the bottom surface of the second initial platform model is parallel to the occlusal plane; According to the demand, the amount L0 or the stage amount L n , constructing the aircraft platform model based on the second initial platform model.

7. A method for manufacturing an orthodontic appliance for accurately lowering front teeth according to claim 6, characterized in that: The amount L0 or the amount L1 of the stage is lowered according to the demand. n The step of constructing the aircraft platform model based on the second initial platform model includes: Get the braces thickness H; Determine the front and rear teeth opening parameter k according to the digital dental jaw model; Determine the overbite value L a ; Calculate the second parallel extension distance O based on the second initial platform model n2 , the calculation formula is: n2 =L a -H×k+L0 or O n2 =L a -H×k+L n ; According to the second parallel extension distance O n2 , constructing the aircraft platform model based on the second initial platform model.

8. A method for manufacturing an orthodontic appliance for accurately lowering front teeth according to claim 5 or 7, characterized in that: The step of constructing a corresponding platform model according to the depression platform type and the occlusal plane, and the required depression amount or the stage depression amount, further includes: Perform a depression amount simulation operation to obtain a corresponding simulated depression amount; If the first parallel extension distance O is calculated according to the required depression amount L0 n1 Or the second parallel extension distance O n2 , then according to the third comparison result of the simulated depression amount and the required depression amount, it is determined whether to construct a corresponding platform model; if according to the stage depression amount L n Calculate the first parallel extension distance O n1 Or the second parallel extension distance O n2 , then according to the fourth comparison result between the simulated depression amount and the stage depression amount, it is determined whether to continue the staged depression operation, and if not, the corresponding platform model is directly constructed.

9. The method for manufacturing an orthodontic appliance for accurately lowering front teeth according to claim 8, characterized in that: After the step of determining whether to continue the staged push-down operation and, if not, directly constructing the corresponding platform model, the method further includes: if the staged push-down operation is continued, determining whether to push the corresponding user interaction window; If the corresponding user interaction window is not pushed, determining a new stage depression amount according to the staged depression operation, and then obtaining a new fourth comparison result for re-judgment; If the corresponding user interaction window is pushed, the adjusted stage depression amount is determined according to the user interaction window, and based on the adjusted stage depression amount, a new fourth comparison result is obtained for re-judgment.

10. An orthodontic appliance for precisely intruding anterior teeth, characterized in that: The orthodontic appliance is manufactured using the manufacturing method for an orthodontic appliance for accurately lowering front teeth as described in any one of claims 1 to 9.

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