A method and apparatus for preparing a digital steel bracket

Abstract

The application discloses a kind of digital steel support bracket preparation method and device, wherein the method comprises the following steps: scanning dental impression, obtaining dental impression three-dimensional data and generating three-dimensional virtual oral model;According to three-dimensional virtual oral model, carry out screening according to condition parameter in steel support bracket database, match to corresponding preset steel support bracket digital model;The preset steel support bracket digital model and three-dimensional virtual oral model are edited, and steel support bracket digital model and oral digital model are formed, wherein steel support bracket digital model is matched with oral digital model;Steel support bracket digital model and oral digital model are printed out respectively by 3D printing, and steel support bracket physical object and oral model physical object are obtained;Steel support bracket physical object is located on oral model physical object, and steel support bracket physical object is debugged reset.The application scheme ensures the precision of steel support bracket, improves the comfort and practicality in oral cavity, can optimize production process, improve production efficiency and reduce cost.

Description

Technical Field

[0001] This application relates to the field of dental equipment technology, and more specifically, to a method and apparatus for manufacturing a digital dental brace. Background Technology

[0002] Dentures are artificial teeth placed to restore chewing, aesthetics, and speech functions after teeth have been lost or extracted. The metal frame is the core component of some dental dentures, serving to support and stabilize the denture base.

[0003] Currently, steel support brackets are manufactured using a combination of casting and mold making. This process involves multiple steps, including mold making, upper jaw frame construction, measuring and filling the indentation, setting up the steel support bracket model, making wax patterns, spot casting, embedding, pouring, and casting. It is complex and has low precision.

[0004] Application content

[0005] The purpose of this application is to provide a digital steel support bracket manufacturing method and apparatus, which aims to solve the technical problems of existing steel support bracket production requiring multiple processes such as molding and casting, resulting in complex processes and low precision.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] This application provides a method for manufacturing a digital steel support bracket, which includes the following steps:

[0008] Scan the dental impression to obtain 3D data of the dental impression and generate a 3D virtual oral cavity model;

[0009] Based on the three-dimensional virtual oral cavity model, the steel bracket database is filtered according to the condition parameters to match the corresponding preset steel bracket digital model. The steel bracket database is created in advance, and the condition parameters include: clasp morphology and structure classification and standard parameters.

[0010] Edit the preset digital model of the steel brace and the three-dimensional virtual oral cavity model to form a digital model of the steel brace and an oral cavity model, wherein the digital model of the steel brace and the oral cavity model are matched.

[0011] Digital models of the brace and the oral cavity were printed using 3D printing to obtain physical brace and oral cavity models.

[0012] The actual steel bracket was placed on the actual oral cavity model and then adjusted.

[0013] Furthermore, the step of pre-creating the steel support database includes:

[0014] Modeling of steel support structures of different support types is performed to form a preset digital model of the steel support;

[0015] Different databases are established for different types of supports, forming DME files. The databases include preset digital models of steel support supports.

[0016] Load the database of steel support brackets in the design backend;

[0017] The pre-set digital model of the steel support bracket in the database is tested based on the input design case, and the standard values ​​of the design parameters of each bracket are confirmed.

[0018] The database option is loaded on the visual interface of the design software. The database option is used to call the preset digital model of the steel support bracket in the database.

[0019] Furthermore, in the step of establishing different databases based on different stent types to form DME files:

[0020] Based on the location of the missing teeth on the dental arch and their relationship with the remaining teeth, Kennedy dentition loss classification data is generated, which includes Kennedy-I, Kennedy-II, Kennedy-III and Kennedy-IV.

[0021] Based on the relationship between the size of the abutment tooth and the depth of the undercut, clasp classification data is generated, which includes: G-type clasp, ring clasp, pullback clasp, Bonwill clasp, and Y-type clasp;

[0022] Based on the relationship between the shape of the abutment tooth, the position and size of the undercut, and the design shape, bar-shaped clasp retention arm classification data is generated. The bar-shaped clasp retention arm classification data includes: I-type retention arm, T-type retention arm, L-type retention arm, U-type retention arm, and C-type retention arm.

[0023] Furthermore, in the step of generating Kennedy dentition defect classification data based on the position of the missing tooth on the dental arch and its relationship with the remaining teeth:

[0024] If the tooth type matched by the preset metal bracket digital model is bilateral free missing teeth, missing teeth on both sides of the dental arch and no natural teeth in the distal part of the gap, then Kennedy-I type is generated;

[0025] If the tooth type matched by the preset metal bracket digital model is unilateral free tooth loss, unilateral posterior tooth loss of the dental arch, and no natural tooth present distal to the vacancy, then Kennedy-II type is generated;

[0026] If the pre-set digital model of the steel bracket matches the tooth type of unilateral missing tooth with natural teeth in both the front and back of the gap, then Kennedy-III type will be produced.

[0027] If the preset digital model of the dental arch supports matches a tooth shape in which the front teeth are continuously missing and cross the midline, and the natural teeth are distal to the gap, then Kennedy-IV type is generated.

[0028] Furthermore, the step of testing the 3D digital model in the database based on the input design case and confirming the standard values ​​of each support design parameter includes:

[0029] Collect feasible clinical feedback data to test the stent design parameters of the three-dimensional digital model;

[0030] The standard values ​​of each parameter of the stent design parameters were verified, including the gap between the base and the model, the elasticity of the retaining ring, the diameter of the support position, and the thickness of the support position.

[0031] Furthermore, in the step of loading the database option on the visual interface of the design software, the database option being used to call the preset digital model of the steel support bracket in the database:

[0032] The database options include: circlip shape and structure classification options, and standard parameter setting input options;

[0033] Based on the clasp morphology and structure classification options, the standard parameter settings, and the lever principle, a database of ten types of steel brackets is formed; among them, the lever principle is: occlusal force × occlusal arm = balancing force × balancing arm.

[0034] Furthermore, the steps of editing the preset brace digital model and the three-dimensional virtual oral cavity model to form the brace digital model and the oral cavity digital model include:

[0035] Edit the edge line of the missing tooth based on the 3D virtual oral cavity model;

[0036] By combining a 3D virtual oral cavity model and the edge line of the missing tooth, a pre-defined digital model of the steel bracket is edited to form a digital model of the steel bracket.

[0037] Furthermore, the step of editing the preset brace digital model and the three-dimensional virtual oral cavity model to form the brace digital model and the oral cavity digital model also includes:

[0038] Set up a digital model of the occlusal plane based on a 3D virtual oral cavity model;

[0039] Construct an occlusal plane model, trim any unnecessary parts of the occlusal plane model, and preserve the complete dentition, palatal folds, frenulum, and mucosal folds of the occlusal plane model;

[0040] Add jawbone tags to the occlusal plane model to generate a digital oral model.

[0041] Furthermore, the steps of placing the actual steel bracket on the actual oral cavity model and adjusting the actual steel bracket include:

[0042] The steel support frame was installed on the dental model and adjusted to fit.

[0043] The steel support bracket is polished and ground to form the finished steel support bracket.

[0044] On the other hand, to achieve the above objectives, this application also provides an apparatus, wherein the apparatus includes a memory, a processor, and a digital steel support bracket preparation program stored in the memory and capable of running on the processor, wherein when the digital steel support bracket preparation program is executed by the processor, it implements the steps of the digital steel support bracket preparation method as described above.

[0045] Beneficial Effects: Compared with existing technologies, this application provides a digital brace fabrication method and apparatus. The method generates a three-dimensional virtual oral model by scanning a dental impression. Since the surface contour of the three-dimensional virtual oral model matches the tooth contour in the patient's mouth, a corresponding preset digital brace model is matched by filtering a brace database according to condition parameters based on the three-dimensional virtual oral model. The preset digital brace model and the three-dimensional virtual oral model are edited to form a digital brace model and an oral digital model. These are then 3D printed to obtain physical brace and oral models. This application not only replaces the traditional steps of manual impression taking and manual brace model fabrication with a digital method, optimizing the production process, improving production efficiency, and reducing costs, but also ensures the accuracy of the brace, improving oral comfort and practicality. In addition, this solution improves the development and application process of a pre-defined database by classifying the design types of steel support brackets for various indications, forming a matching system for common and similar types, and creating a database. The database can be matched and called through the classification of ring morphology and structure and standard parameters, making the design of steel support brackets simpler. It achieves cross-domain design by using unified standard parameters, breaking through the limitations of digital design of steel support brackets, greatly improving design efficiency, and avoiding the problems of cumbersome design steps and high technical difficulty in existing steel support bracket technologies. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the main process of a digital steel support bracket manufacturing method provided in Embodiment 1 of this application;

[0048] Figure 2 A schematic diagram of the database creation process for a digital steel support bracket manufacturing method provided in Embodiment 1 of this application;

[0049] Figure 3 A detailed flowchart illustrating a digital steel support bracket manufacturing method provided in Embodiment 1 of this application;

[0050] Figure 4 This is a structural principle block diagram of a device provided in Embodiment 2 of this application;

[0051] Figure 5 A schematic diagram of Kennedy's master classification data for a digital steel bracket fabrication method provided in Embodiment 1 of this application;

[0052] Figure 6 A schematic diagram of Kennedy subclassification data for a digital steel bracket fabrication method provided in Embodiment 1 of this application;

[0053] Figure 7 This is a classification diagram of the clasp classification data for a digital steel support bracket manufacturing method provided in Embodiment 1 of this application;

[0054] Figure 8 A schematic diagram illustrating the classification of the retaining arms in a digital steel support bracket manufacturing method provided in Embodiment 1 of this application;

[0055] Figure 9 This is a schematic diagram illustrating the classification of the clasp morphology structure in a digital steel support bracket fabrication method provided in Embodiment 1 of this application;

[0056] Figure 10 A schematic diagram illustrating the structural classification of a steel support bracket according to a digital steel support bracket manufacturing method provided in Embodiment 1 of this application;

[0057] Figure 11 A schematic diagram of a scanned impression provided in an embodiment of this application;

[0058] Figure 12This is a schematic diagram illustrating the principle of obtaining three-dimensional dental impression data provided in an embodiment of this application.

[0059] Figure 13 A schematic diagram illustrating the detection principle of the model design conditions in place path provided in the embodiments of this application;

[0060] Figure 14 This is a schematic diagram illustrating the principle of editing the edge line of a missing tooth, provided in an embodiment of this application.

[0061] Figure 15 A schematic diagram illustrating the principle of setting up a steel support bracket model as provided in the embodiments of this application;

[0062] Figure 16 A schematic diagram illustrating the principle of setting the occlusal plane model according to an embodiment of this application;

[0063] Figure 17 A schematic diagram illustrating the principle of constructing the occlusal plane model provided in the embodiments of this application;

[0064] Figure 18 A schematic diagram illustrating the principle of adding an articulator label to the occlusal plane model provided in the embodiments of this application;

[0065] Figure 19 A schematic diagram illustrating the effect of generating a digital oral cavity model using the steel brace provided in the embodiments of this application;

[0066] Figure 20 An image showing the effect of tempering treatment on the steel support bracket provided in the embodiment of this application;

[0067] Figure 21 This is a schematic diagram showing the steel support bracket being adjusted and positioned on a model according to an embodiment of this application.

[0068] Figure 22 The image shows the effect of polishing and grinding the steel support bracket provided in the embodiment of this application. Detailed Implementation

[0069] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0070] This application not only overcomes the limitations of traditional manual tempered steel bracket manufacturing through digital design, significantly improving production efficiency and assembly precision, but also, based on numerous production cases, has developed a database that further optimizes and improves the digital design process. Existing digital design technologies require human intervention to draw lines on various components of the steel bracket (clamps, supports, large connectors, small connectors, tongues, retaining nets, etc.) to form the overall structure, which must then be sequentially executed to proceed to the next step. This restrictive approach significantly impacts efficiency. Furthermore, existing digital design processes are cumbersome, technically challenging, and require experienced technicians to analyze and plan the design before applying software to create the 3D data of the steel bracket. To address these issues, this application proposes the following solution:

[0071] Example 1

[0072] Please see Figure 1 This embodiment provides a method for manufacturing a digital steel support bracket, which includes the following steps:

[0073] S100: Scan the dental impression to obtain 3D data of the dental impression and generate a 3D virtual oral cavity model.

[0074] In this embodiment, the dental impression is scanned to obtain three-dimensional data of the dental impression. For example, the dental impression is scanned using an in-cabin scanner to obtain three-dimensional data of the dental impression (such as...). Figure 11 , Figure 12 and Figure 13 As shown in the diagram, the 3D data of the dental impression is visualized within the software to form a digital model of the dental impression. This digital model captures the patient's oral cavity contours. Specifically, the digital model includes complete dentition data and gingival data. For example, it includes the complete dentition morphology, the position and shape of the palatine folds, the mandibular lingual gingival margin, the frenulum, and the mucosal folds. After scanning the dental impression using the 3shape chamber, the software automatically flips the data (equivalent to pouring plaster into the dental impression in reality, thus forming a 3D virtual oral model that recreates the oral cavity 1:1), restoring the digital model of the dental impression to a 3D virtual oral model. The outline of this 3D virtual oral model is identical to the shape of the teeth in the patient's mouth, representing a digital representation of the patient's oral cavity. A metal brace model is then fabricated based on the 3D virtual oral model.

[0075] S200. Based on the three-dimensional virtual oral cavity model, filter the steel bracket database according to the condition parameters and match the corresponding preset steel bracket digital model. The steel bracket database is created in advance, and the condition parameters include: clasp morphology and structure classification and standard parameters.

[0076] In practice, the pre-defined digital model of the dental arch is directly matched with the clasp morphology and standard parameters in the database. This ensures that the selected digital model of the dental arch roughly matches or perfectly matches the 3D virtual oral cavity model. Since the clasp morphology and standard parameters are pre-set, a unified standard is used to address different oral conditions. This simplifies the design of the dental arch by matching and calling the clasp morphology and standard parameters, enabling cross-domain design using unified standard parameters. This overcomes the limitations of digital dental arch design, significantly improves design efficiency, and avoids the cumbersome and technically challenging design steps of existing dental arch technologies.

[0077] like Figure 2 As shown, in step S200, the database needs to be pre-created. This solution leverages the advantage of a large amount of clinical intraoral scan data on the three-dimensional surfaces of teeth and periodontal tissues (data collected and analyzed from over ten thousand cases) to analyze and judge the model data. Combined with a large number of existing clinical samples, the design types of braces for various indications are categorized to form commonalities and similar types for database creation. The specific steps for pre-creating the brace database include:

[0078] Step S210: Model the steel support structure of different support types to form a preset digital model of the steel support.

[0079] Since the database contains digital models of steel support brackets, these models must be stored in the database beforehand. By categorizing and editing these models, different preset standards for steel support brackets can be created. This facilitates direct use in the software and significantly improves design efficiency.

[0080] Step S220: Establish different databases according to different types of supports, and form dme files. The database includes a preset digital model of the steel support.

[0081] In the specific process, data analysis was conducted on the steel support brackets designed for a large number of cases. A significant amount of time, manpower, and resources were invested in data analysis and standardization of relevant data to derive patterns and establish a database of steel support bracket types. This database provides a more comprehensive coverage of the preset steel support bracket digital models, ensuring that they can be matched to various patients' oral conditions.

[0082] Specifically, step S220 includes:

[0083] Step S221: Generate Kennedy dentition defect classification data based on the position of the missing tooth on the dental arch and its relationship with the remaining teeth. The Kennedy dentition defect classification data includes Kennedy-I, Kennedy-II, Kennedy-III and Kennedy-IV.

[0084] like Figure 5 As shown, based on the tooth shape reflected in the patient's oral cavity by the three-dimensional virtual oral model, the Kennedy classification is used. According to the location of the gap on the dental arch and its relationship with the remaining teeth, edentulism is divided into the following four basic types. The specific process is as follows:

[0085] If the pre-defined digital model of the dental arch supports matches a tooth type that is bilateral free tooth loss, posterior tooth loss on both sides of the dental arch, and no natural tooth distal to the vacancy, then a Kennedy-I class (e.g.) is generated. Figure 5 As shown in (1).

[0086] If the pre-defined digital model of the dental arch supports matches a tooth type that is unilateral free tooth loss, unilateral posterior tooth loss in the dental arch, and no natural tooth present distal to the vacancy, then Kennedy-II type (e.g.) is generated. Figure 5 (as shown in (2)).

[0087] Since the subclasses only consider the number of additional gaps, not their range, the Kennedy-II and Kennedy-I classes can be further subdivided into subclasses: Kennedy-I class, subclass 1 (e.g., ... Figure 6 (as shown in (5)); Kennedy-II subclass 1 (as shown in (5)); Figure 6 (as shown in (6)); Kennedy-II subclass 3 (as shown in (6)); Figure 6 (as shown in (7)); Kennedy-I class 4 subclass (as shown in (7)); Figure 6 (as shown in (8)).

[0088] If the pre-set digital model of the metal bracket matches a unilateral missing tooth with natural teeth on both sides of the gap, then Kennedy-III class (e.g.) will be produced. Figure 5 (As shown in (3)).

[0089] If the pre-defined digital model of the dental arch supports matches a tooth profile where the front teeth are continuously missing and cross the midline, with natural teeth distal to the nick, then Kennedy-IV type (e.g., Figure 5 (as shown in (4)).

[0090] Step S222: Based on the relationship between the size of the abutment tooth and the depth of the undercut, generate clasp classification data, which includes: G-type clasp, ring-type clasp, return clasp, Bonwill clasp, and Y-type clasp.

[0091] like Figure 7 As shown, in the specific process, clasps are mainly used to surround the teeth, and they encircle the teeth through the inner contour. Different types of clasps are suitable for different types of teeth. For example... Figure 7 As shown in (1), the inner contour (surrounding the outer wall of the tooth) of the G-type clasp is "G" shaped, and it is suitable for molars. Figure 7 As shown in (2), the inner contour of the ring-shaped clasp is a notched ring, which is suitable for molars. Figure 7 As shown in (3), the outer wall of the return ring abuts against the adjacent teeth, and the inner wall is a ring with a notch. It is suitable for molars and premolars. Figure 7 As shown in (4), the Bonwil clasp is placed between two adjacent teeth and wraps around them with open rings on both sides. It is suitable for deciduous molars. Figure 7 As shown in (5), the Y-shaped clasp has a Y-shaped outline and is suitable for anterior teeth and premolars.

[0092] Step S222: Based on the relationship between the shape of the abutment tooth, the position and size of the undercut, and the design shape, generate the bar-shaped clasp retention arm classification data, which includes: I-type retention arm, T-type retention arm, L-type retention arm, U-type retention arm, and C-type retention arm.

[0093] like Figure 8 As shown, in the specific structure, the different types of rod-shaped retaining arms include: such as Figure 8 As shown in Figure E, the type I retention arm has an elongated outer contour and is used to abut against the teeth. Figure 8 As shown in Figure A, the T-shaped retention arm has a T-shaped outline and rests against the tooth through its front end. Figure 8 As shown in Figure C, the L-shaped retaining arm has an L-shaped outline. Figure 8 As shown in Figure B, the U-shaped retaining arm has a U-shaped outline, with the U-shaped opening facing upwards during use. Figure 8 As shown in Figure D, the C-type retention arm has a C-shaped outline. The clasp design is diverse, aesthetically pleasing, and provides strong retention. The RPI clasp assembly and RPA clasp assembly are used as examples to create a database of stent components.

[0094] Step S230: Load the database of steel support brackets in the design background.

[0095] In the specific process, after analyzing the conditions of the 3D data model, the appropriate type of solution is selected based on the design support type in the database, forming a fully digital AI intelligent design that improves convenience, increases work efficiency, reduces design difficulty, alleviates the shortage of technical personnel for enterprises, and solves the problem of talent shortage.

[0096] Step S240: Test the preset steel support digital model in the database according to the input design case, and confirm the standard values ​​of each support design parameter.

[0097] In practice, feasibility is verified through extensive case testing and clinical data, the design parameters of the support structure are adjusted, and unique standard parameters are confirmed. First, it's determined which support structure design parameters can serve as standards, then these parameters are quantified to form numerical values, facilitating data comparison with the imported 3D virtual oral model for matching. The suitability of parameters requires significant manpower, resources, time, and testing costs. Based on the various material properties of the steel support structure and the verification results, a series of extensive clinical feedback and data feasibility tests are conducted to derive multiple sets of suitable data parameter standards: including the gap between the base (retention mesh) and the model, the elasticity of the clasps, and the diameter and thickness of the supports. Ultimately, clinical test results verify that the matching parameters of the steel support structure and the performance characteristics of the materials better suit the indications for steel support structures in patients' oral cavity. Steel support structures generally consist of supports, retention bodies, and connectors. Retention bodies include various forms such as clasps, attachments, and sleeve crowns. Connectors include large and small connectors and mesh connectors. The characteristics of each structure are described below:

[0098] Restraints are made of metal and are generally placed on natural teeth to provide support, prevent dentures from shifting towards the gingiva, and transmit occlusal forces to the abutment teeth. If placed on the occlusal surface of a natural tooth, it is called an occlusal rest; if placed on the lingual surface of anterior teeth, it is called a lingual rest or lingual protuberance rest; and if placed on the incisal edge of anterior teeth, it is called an incisal rest. Among these, the occlusal rest is the most commonly used.

[0099] A retainer is the part of a metal retainer that rests on the abutment tooth (such as a clasp) to resist dislocation forces and provide retention, support, and stability. Based on their function, they can be divided into two main categories: direct retainers and indirect retainers.

[0100] Connectors are an important component of denture frameworks, and are divided into two categories: large connectors and small connectors. They connect the various parts of the denture together and also play a role in transmitting and distributing occlusal forces. Large connectors are also called main connectors or connecting rods, such as palatal rods and lingual rods. The function of small connectors is to connect various components of the denture, such as clasps and rests, and to connect with the large connectors and the denture base.

[0101] The denture base, also known as the base plate, is located in the edentulous area and is called the saddle base because of its saddle shape. The denture base covers the labial, lingual, and palatal sides of the alveolar ridge in the edentulous area and related areas. Its main functions are to provide support for the attachment of artificial teeth, transmit and distribute occlusal forces to the underlying support tissues, and connect the various parts of the denture into a whole.

[0102] Step S240 specifically includes:

[0103] Step S241 collects feasible clinical feedback data and tests the stent design parameters of the three-dimensional digital model.

[0104] Step S242 verifies the standard values ​​of each parameter of the stent design parameters, including the gap between the base and the model, the elasticity of the retaining ring, the diameter of the support position, and the thickness of the support position.

[0105] By understanding the relationship between the above structures and the support structure, various types of structures can be combined to form a range of structures. The parameters of each type of structure can be standardized to facilitate comparison and retrieval in the database.

[0106] Step S250: Load the database option on the visual interface of the design software. The database option is used to call the preset steel support digital model in the database.

[0107] In step S250, the database options include: circlip morphology and structure classification options, and standard parameter setting input options.

[0108] Based on the clasp morphology and structure classification options, the standard parameter settings, and the lever principle, a database of ten types of steel brackets is formed; among them, the lever principle is: occlusal force × occlusal arm = balancing force × balancing arm.

[0109] like Figure 9 The selection of the circlip shape structure includes: a circular circlip ( Figure 9 As shown in (1), the combined clasp ( Figure 9 As shown in (2), for the half-clamp ring ( Figure 9 As shown in (3), barbed snap ring ( Figure 9 As shown in (4), connect the retaining ring ( Figure 9 As shown in (5), the return ring ( Figure 9 As shown in (6)) and the long arm clasp ( Figure 9 (as shown in (7)).

[0110] Please refer to the table below for specific input parameters:

[0111]

[0112] In practice, database options are set to categorize data types, facilitating designers' selection and matching of preset digital models of dental arch supports. The software automatically matches the preset digital model based on the clasp morphology and input standard parameters selected by the designer. Automatic matching must satisfy the law of leverage: occlusal force × occlusal arm = balancing force × balancing arm; leverage forces exist at the free end of the dental arch support, and the lever arm length for chewing pressure must not exceed the balancing arm length. This law is the foundation for designing the retention structure of dental arch supports. Furthermore, the preset digital model of the dental arch support is matched with the three-dimensional virtual oral model. This ensures the support meets strength requirements, is compact and aesthetically pleasing, and that the clasps have sufficient elasticity, facilitating convenient and stable replacement of the dental arch support (removable partial denture) for the patient. It also avoids damage to the natural gingival margin, provides sufficient vertical support, and reduces foreign body sensation.

[0113] like Figure 10 As shown, based on different combination forms, the preset steel support digital model in the database can be decomposed into the following ten models to realize database preset, as follows: Category 1: Palatal rod type ( Figure 10 (as shown in (1)); Category 2: Band-shaped palatine bar ( Figure 10 (as shown in (2)); Category 3: Anterior and posterior palatal rod-shaped ( Figure 10 (as shown in (3)); Category 4: Front plate rear rod type ( Figure 10 (as shown in (4)); Category 5: posterior palatal plate type ( Figure 10 (as shown in (5)); Category 6: Full palatal plate type ( Figure 10 (as shown in (6)); Category 7: U-shaped palatal plate ( Figure 10 (as shown in (7)); Category 8: tongue-shaped ( Figure 10 (as shown in (8)); Class 9: Double-tongue rod type ( Figure 10 (as shown in (9)); Class 10: tongue-shaped ( Figure 10 (As shown in (10)).

[0114] like Figure 1 , Figure 3 As shown, in step S300, the preset digital model of the steel brace and the three-dimensional virtual oral cavity model are edited to form a digital model of the steel brace and a digital model of the oral cavity, wherein the digital model of the steel brace and the digital model of the oral cavity are matched.

[0115] In the specific process, the preset digital model of the steel brace and the 3D virtual oral cavity model are edited in the visualization window to better match the two. This allows for a more precise fit between the steel brace and the patient's oral cavity after subsequent 1:1 fabrication. Figure 3 As shown, step S300 specifically includes:

[0116] Step S310: Edit the edge line of the missing tooth based on the three-dimensional virtual oral cavity model.

[0117] Step S320: Combine the three-dimensional virtual oral cavity model and the edge line of the missing tooth to edit the preset metal bracket digital model and form the metal bracket digital model.

[0118] In this embodiment, a three-dimensional virtual oral cavity model is reconstructed from the three-dimensional data of the dental impression. The edge lines of the missing teeth are then edited based on the three-dimensional virtual oral cavity model. The pre-designed digital model of the brace is processed by combining the three-dimensional virtual oral cavity model and the edge lines of the missing teeth. For example, after scanning the dental impression using a 3shape chamber, the software automatically flips the data, restoring the dental impression scan data to the form of the three-dimensional virtual oral cavity model scan data, i.e., the three-dimensional virtual oral cavity model. The brace model is then fabricated according to the settings of the three-dimensional virtual oral cavity model. The edge lines of the missing teeth need to be manually hand-drawn on the three-dimensional virtual oral cavity model (e.g., ...). Figure 14 As shown in the image, this is used to form the edge line of the dental arch support. By combining the 3D virtual oral model and the edge line of the missing tooth, a simple adaptive modification is made to the preset digital model of the dental arch support to complete the dental arch support model (as shown in the image). Figure 15 (as shown in the image), thus making the digital model of the steel brace more closely match the three-dimensional virtual oral cavity model.

[0119] Step S330: Set up the occlusal plane digital model based on the three-dimensional virtual oral cavity model;

[0120] Step S340: Construct the occlusal plane model, trim the excess parts of the occlusal plane model, and retain the complete dentition, palatal folds, frenulum and mucosal folds of the occlusal plane model;

[0121] Step S350: Add jawbone tags to the occlusal plane model to generate a digital oral model.

[0122] In the specific process, the occlusal plane model is set according to the three-dimensional virtual oral cavity model (e.g. Figure 16 As shown in the figure), construct the jaw plane model (such as Figure 17 As shown in the image, trim any unnecessary parts of the occlusal plane model, preserving the complete dentition, palatal folds, frenulum, and mucosal folds. Add articulator tags (such as...) to the occlusal plane model. Figure 18 As shown in the figure, generate a digital model of the oral cavity (such as Figure 19(As shown in the diagram). For example, after creating the brace model, a digital oral model can be set up based on the 3D data of the dental impression. An occlusal plane model can then be created based on the 3D data of the dental impression. The occlusal plane model can be modified, and redundant parts can be trimmed to preserve the complete dentition, palatal folds, frenulum, and mucosal folds. An articulation label can be added to the occlusal plane model to generate a digital oral model. This digital model is then printed out. The printed brace is then adjusted and positioned on this printed oral impression. After adjustment and positioning, the brace is polished.

[0123] Step S400: Print the digital model of the steel brace and the digital model of the oral cavity using 3D printing to obtain the physical steel brace and the physical oral cavity model.

[0124] In the specific process, the digital model of the brace is transmitted to a 3D printing chamber, where it is 3D printed to obtain the physical brace. Similarly, the digital model of the oral cavity is transmitted to a 3D printing chamber, where it is 3D printed to obtain the physical oral cavity model.

[0125] Step S500: Place the actual steel bracket on the actual oral cavity model and adjust the actual steel bracket.

[0126] In the specific process, the steel bracket is adjusted according to the matching between the actual oral model and the actual steel bracket, so as to ensure the accuracy of the steel bracket and improve the comfort and practicality in the oral cavity.

[0127] Specifically, step S500 includes the following steps:

[0128] Step S510: Install the actual steel support bracket onto the actual oral cavity model and adjust it into place;

[0129] Step S520: Polish and grind the actual steel support bracket to form the finished steel support bracket.

[0130] After debugging, the steel support bracket is tempered to eliminate internal stress (e.g., Figure 20 (As shown in the image). The steel support bracket is then polished and sanded (as shown in the image). Figure 21 , Figure 22 (As shown).

[0131] Example 2

[0132] like Figure 4 As shown, this embodiment provides a device, which includes a processor 10, a memory 20, and a display 30. Figure 4Only some components of the device are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0133] In some embodiments, the memory 20 may be an internal storage unit of the device, such as a hard disk or memory. In other embodiments, the memory 20 may be an external storage device, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, etc. Further, the memory 20 may include both internal and external storage units. The memory 20 is used to store application software and various types of data installed on the device, such as program code installed on the device. The memory 20 can also be used to temporarily store data that has been output or will be output. In one embodiment, the memory 20 stores a digital steel support bracket manufacturing program 40, which can be executed by the processor 10 to implement the digital steel support bracket manufacturing method of Embodiment 1 of this application.

[0134] In some embodiments, the processor 10 may be a central processing unit (CPU), a microprocessor, or other data processing chip, used to run program code stored in the memory 20 or process data, such as executing the digital steel support bracket preparation method.

[0135] In some embodiments, the display 30 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. The display 30 is used to display information on the device and to display a visual user interface. The components 10-30 of the device communicate with each other via a system bus.

[0136] In summary, this application discloses a method and apparatus for manufacturing a digital dental arch support. The method includes scanning a dental impression to obtain three-dimensional data of the impression; designing a dental arch support model based on the three-dimensional data; 3D printing the dental arch support model to obtain a physical dental arch support; adjusting the physical dental arch support based on the three-dimensional data; and tempering the physical dental arch support after adjustment to eliminate internal stress. This application, by scanning an impression to design a dental arch support model, manufacturing a physical dental arch support based on the model, and adjusting the physical dental arch support based on the three-dimensional data, ensures the accuracy of the dental arch support, improves oral comfort and practicality, optimizes the production process, increases production efficiency, and reduces costs.

[0137] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for manufacturing a digital steel support bracket, characterized in that, Includes the following steps: Scan the dental impression to obtain 3D data of the dental impression and generate a 3D virtual oral cavity model; Based on the 3D virtual oral cavity model, the steel bracket database is filtered according to conditional parameters to match the corresponding preset steel bracket digital model. The steel bracket database is pre-created, and the conditional parameters include: clasp morphology and structural classification and standard parameters. The clasp morphology and structural classification includes: ring clasps, combined clasps, half clasps, barbed clasps, connecting clasps, pullback clasps, and long-arm clasps. The standard parameters include: undercut depth, anterior palatal bar thickness, posterior palatal bar thickness, palatal plate thickness, clasp arm thickness, clasp arm width, clasp body thickness, clasp body width, occlusal rest thickness, occlusal rest width, retention mesh hole diameter, connector thickness, maximum thickness at the connection between the clasp body and clasp arm, liner space, and pattern height. Edit the preset digital model of the steel brace and the three-dimensional virtual oral cavity model to form a digital model of the steel brace and an oral cavity model, wherein the digital model of the steel brace and the oral cavity model are matched. Digital models of the brace and the oral cavity were printed using 3D printing to obtain physical brace and oral cavity models. The actual steel bracket was placed on the actual oral cavity model and then adjusted.

2. The method for preparing a digital steel support bracket as described in claim 1, characterized in that, The steps involved in pre-creating the steel support database include: Modeling of steel support structures of different support types is performed to form a preset digital model of the steel support; Different databases are established for different types of supports, forming DME files. The databases include preset digital models of steel support supports. Load the database of steel support brackets in the design backend; The pre-set digital model of the steel support bracket in the database is tested based on the input design case, and the standard values ​​of the design parameters of each bracket are confirmed. The database option is loaded on the visual interface of the design software. The database option is used to call the preset digital model of the steel support bracket in the database.

3. The method for manufacturing a digital steel support bracket as described in claim 2, characterized in that, In the step of establishing different databases based on different stent types to generate DME files: Based on the location of the missing teeth on the dental arch and their relationship with the remaining teeth, Kennedy dentition loss classification data is generated, which includes Kennedy-I, Kennedy-II, Kennedy-III and Kennedy-IV. Based on the relationship between the size of the abutment tooth and the depth of the undercut, clasp classification data is generated, which includes: G-type clasp, Bonwill clasp, and Y-type clasp; Based on the relationship between the shape of the abutment tooth, the position and size of the undercut, and the design shape, bar-shaped clasp retention arm classification data is generated. The bar-shaped clasp retention arm classification data includes: I-type retention arm, T-type retention arm, L-type retention arm, U-type retention arm, and C-type retention arm.

4. The method for manufacturing a digital steel support bracket as described in claim 3, characterized in that, In the step of generating Kennedy dentition defect classification data based on the position of the missing tooth on the dental arch and its relationship with the remaining teeth: If the tooth type matched by the preset metal bracket digital model is bilateral free missing teeth, missing teeth on both sides of the dental arch and no natural teeth in the distal part of the gap, then Kennedy-I type is generated; If the tooth type matched by the preset metal bracket digital model is unilateral free tooth loss, unilateral posterior tooth loss of the dental arch, and no natural tooth present distal to the vacancy, then Kennedy-II type is generated; If the pre-set digital model of the steel bracket matches the tooth type of unilateral missing tooth with natural teeth in both the front and back of the gap, then Kennedy-III type will be produced. If the preset digital model of the dental arch supports matches a tooth shape in which the front teeth are continuously missing and cross the midline, and the natural teeth are distal to the gap, then Kennedy-IV type is generated.

5. The method for manufacturing a digital steel support bracket as described in claim 4, characterized in that, The steps of testing the 3D digital model in the database based on the input design case and confirming the standard values ​​of each support design parameter include: Collect feasible clinical feedback data to test the stent design parameters of the three-dimensional digital model; The standard values ​​of each parameter of the stent design parameters were verified, including the gap between the base and the model, the elasticity of the retaining ring, the diameter of the support position, and the thickness of the support position.

6. The method for manufacturing a digital steel support bracket as described in claim 5, characterized in that, In the step of loading the database option on the visual interface of the design software, the database option is used to call the preset digital model of the steel support bracket in the database: The database options include: circlip shape and structure classification options, and standard parameter setting input options; Based on the clasp morphology and structure classification options, the standard parameter settings, and the lever law, a database of ten types of steel brackets is formed; where the lever law is: occlusal force × occlusal arm = balancing force × balancing arm; The ten types of steel support brackets include: Type 1: posterior palatal rod type; Type 2: strip palatal rod type; Type 3: combined anterior and posterior palatal rod type; Type 4: anterior plate and posterior rod type; Type 5: posterior palatal plate type; Type 6: full palatal plate type; Type 7: U-shaped palatal plate type; Type 8: tongue rod type; Type 9: double tongue rod type; Type 10: tongue plate type.

7. The method for manufacturing a digital steel support bracket as described in claim 1, characterized in that, The steps of editing the preset digital model of the steel brace and the three-dimensional virtual oral cavity model to form the digital model of the steel brace and the digital model of the oral cavity include: Edit the edge line of the missing tooth based on the 3D virtual oral cavity model; By combining a 3D virtual oral cavity model and the edge line of the missing tooth, a pre-defined digital model of the steel bracket is edited to form a digital model of the steel bracket.

8. The method for manufacturing a digital steel support bracket as described in claim 7, characterized in that, The step of editing the preset digital model of the steel brace and the three-dimensional virtual oral cavity model to form the digital model of the steel brace and the digital model of the oral cavity further includes: Set up a digital model of the occlusal plane based on a 3D virtual oral cavity model; Construct an occlusal plane model, trim any unnecessary parts of the occlusal plane model, and preserve the complete dentition, palatal folds, frenulum, and mucosal folds of the occlusal plane model; Add jawbone tags to the occlusal plane model to generate a digital oral model.

9. The method for manufacturing a digital steel support bracket as described in claim 8, characterized in that, The steps of placing the actual steel brace on the actual oral cavity model and adjusting the actual steel brace include: The steel support frame was installed on the dental model and adjusted to fit. The steel support bracket is polished and ground to form the finished steel support bracket.

10. An apparatus, characterized in that, The device includes a memory, a processor, and a digital steel support bracket manufacturing program stored in the memory and capable of running on the processor. When the digital steel support bracket manufacturing program is executed by the processor, it implements the steps of the digital steel support bracket manufacturing method as described in any one of claims 1-9.

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