Method, system, device and medium for making and testing a dual jaw digital bite plate

Abstract

The application discloses a kind of production and test method, system, equipment and medium of double jaw digitalization occlusal plate.To patient carries out preoperative masticatory muscle depolarization pretreatment, and obtains its temporomandibular joint soft and hard tissue three-dimensional data, facial proportion data, dentition form data and mandibular dynamic motion trajectory data;Soft and hard tissue data are input into medical image processing software, combined with dentition overlap covering situation, the condylar position is corrected and virtually positioned to the center position of fossa or muscle-bone stable position, and corrected data is obtained;With the corrected condylar position as the jaw position reference, facial proportion as the height constraint, dynamic trajectory as the motion simulation basis, the occlusal plate three-dimensional model is generated by collaborative processing;According to model manufacturing entity, and the wearer is tested muscle and occlusal pressure, and judge adaptability, if abnormal, then feedback adjustment model and re-manufacture test.The application improves the individualized adaptation accuracy, functionality and treatment reliability of occlusal plate.

Description

Technical Field

[0001] This invention relates to the field of digital dental medical and rehabilitation equipment technology, specifically to a method, system, equipment, and medium for the fabrication and testing of a bimaxillary digital occlusal plate. Background Technology

[0002] Severe tooth wear is a common clinical condition in dentistry, often caused by long-term occlusal trauma, acid erosion, and poor chewing habits, resulting in severe damage to the occlusal surface morphology and a reduction in vertical occlusal height. Patients not only face a significant decrease in chewing efficiency but also frequently experience complications such as temporomandibular joint disorder (e.g., joint clicking and pain), and facial muscle fatigue, severely impacting their quality of life. For these patients, wearing a bimaxillary occlusal splint to restore occlusal height, protect joint function, and assist with eating is an important conservative treatment and rehabilitation method.

[0003] Currently, there are two main methods for fabricating occlusal plates for patients with severe tooth wear: traditional manual fabrication and digital fabrication. However, both methods have significant technical limitations.

[0004] Traditional bimaxillary occlusal splint fabrication relies heavily on manual impression taking by clinicians and empirical recording of static occlusal relationships (such as bite wax). This method has several drawbacks: First, manual impression taking has limited precision and cannot obtain accurate three-dimensional morphology of the patient's temporomandibular joint soft and hard tissues. Second, the static occlusal relationship on which the design is based does not consider the patient's individualized dynamic movement trajectory of the mandible and the coordination of overall facial proportions, resulting in poor fit between the fabricated occlusal splint and the patient's anatomical structure and physiological movements. Patients are prone to splint displacement and uneven occlusal pressure distribution when wearing the splint and eating, which not only affects comfort and safety but may even increase the burden on the temporomandibular joint due to abnormal stress.

[0005] With the development of digital technology, digital occlusal plate design methods based on cone-beam computed tomography (CBCT) and oral scans have emerged. While these methods improve model accuracy, they still have limitations: First, data sources are usually limited to a single or a few imaging modalities (such as CBCT alone or combined with oral scans), lacking MRI imaging of key soft tissues of the temporomandibular joint (such as the articular disc) and the fusion of three-dimensional facial contour data for aesthetic proportions. This results in a one-sided design basis, making it difficult to achieve global adaptation of the joint, face, and dentition. Second, the design process is mostly based on assumed or averaged mandibular motion parameters, failing to integrate dynamic mandibular motion trajectory data captured by devices such as electronic face bows that reflect the patient's true physiological state. This can cause interference in actual movement during occlusal plate design. Third, existing methods generally lack a pre-treatment step for the patient's preoperative masticatory muscle tension. Occlusal compensation caused by tense muscles directly affects the accuracy of subsequent data acquisition and design. Fourth, existing technical solutions mostly stop at the design and manufacturing of occlusal splints, lacking quantitative testing and verification based on objective physiological signals (such as electromyography) and mechanical signals (such as occlusal pressure) after wearing, and have not formed a closed-loop process for iterative optimization of the design based on test results, making it difficult to ensure and continuously optimize the long-term fit and therapeutic effect of the occlusal splint.

[0006] Therefore, there is an urgent need for a systematic solution that can integrate multimodal imaging diagnosis, dynamic functional assessment, preoperative muscle pretreatment, precise personalized design and manufacturing, as well as quantitative testing and closed-loop verification, to overcome the shortcomings of existing technologies and provide patients with severe tooth wear with a bimaxillary digital occlusal plate that is highly accurate in fitting, comfortable and safe to use, and can effectively protect the function of the temporomandibular joint. Summary of the Invention

[0007] To address the problems in existing bimaxillary occlusal plate fabrication methods, such as low fitting accuracy, poor comfort, and potential increased joint burden due to limited data sources and lack of dynamic functional assessment and preoperative muscle pretreatment, as well as the inability to ensure and optimize long-term use effects due to the lack of quantitative testing and closed-loop verification, this invention provides a method, system, equipment, and medium for fabricating and testing a bimaxillary digital occlusal plate, thereby resolving the aforementioned technical deficiencies.

[0008] This invention proposes a method for fabricating and testing a bimaxillary digital occlusal plate, which includes the following steps:

[0009] S1. Perform preoperative depolarization pretreatment on the masticatory muscles of the patient and obtain three-dimensional data of the soft and hard tissues of the temporomandibular joint, facial proportion data, dental arch morphology data and mandibular dynamic movement trajectory data.

[0010] S2. Input the three-dimensional data of soft and hard tissues into the medical image processing software. Based on the joint space and articular disc position information in the three-dimensional data of soft and hard tissues, and with reference to the patient's overbite and overjet, correct the condyle position so as to virtually position the condyle to the center position or musculoskeletal stability position in the glenoid fossa and obtain the corrected condyle position data.

[0011] S3. The corrected condylar position data, facial proportion data, dentition morphology data, and mandibular dynamic movement trajectory data are collaboratively processed to generate a three-dimensional model of the bimaxillary occlusal plate; the collaborative processing includes:

[0012] S31. Using the corrected condylar position data as a reference, set the rotation center of the virtual jawbone frame to determine the target jaw position;

[0013] S32. Using facial proportion data as a constraint, calculate and set the vertical height of the occlusal plate;

[0014] S33. Load the dynamic motion trajectory data of the mandible into the virtual jaw frame for dynamic motion simulation, and adjust the occlusal surface morphology based on the simulation results;

[0015] S34. Based on the dentition morphology data and combined with the vertical height and the adjusted occlusal surface morphology, construct a three-dimensional model of the bimaxillary occlusal plate.

[0016] S4. Based on the three-dimensional model of the bimaxillary occlusal plate, manufacture the bimaxillary occlusal plate entity, and perform electromyographic activity test and occlusal pressure distribution test on patients wearing the bimaxillary occlusal plate entity to obtain surface electromyographic signals and occlusal pressure distribution data.

[0017] S5. Determine the fit of the occlusal plate based on surface electromyography signals and occlusal pressure distribution data; if the fit is determined to be abnormal, return to step S3, adjust the three-dimensional model of the bimaxillary occlusal plate, and repeat the operation of step S4.

[0018] Preferably, in step S1, acquiring the patient's three-dimensional data of the temporomandibular joint soft and hard tissues, facial proportion data, dental arch morphology data, and mandibular dynamic movement trajectory data specifically includes the following sub-steps:

[0019] S11. Three-dimensional data of the bony structure of the patient's jawbone and condyle were obtained by using cone-beam CT equipment.

[0020] S12. Magnetic resonance imaging equipment is used to scan and obtain the soft tissue morphological data of the temporomandibular joint disc and ligaments of the patient. The three-dimensional data of the bony structure and the soft tissue morphological data constitute the three-dimensional data of the soft and hard tissues.

[0021] S13. Use a three-dimensional facial scanning device to scan and obtain the patient's facial point cloud data, and extract facial proportion data from the facial point cloud data.

[0022] S14. Use an oral laser scanner to scan and obtain dentition morphology data;

[0023] S15. Electronic facebow recording is used to obtain dynamic movement trajectory data of the mandible.

[0024] More preferably, in step S13, facial proportion data is extracted from the facial point cloud data, specifically including the following sub-steps:

[0025] S131. Locate the spatial positions of the eye-ear plane and the nasal base plane in the facial point cloud data.

[0026] S132. Measure the vertical distance of the middle third region of the plane defined by the eye-ear plane and the nasal floor plane;

[0027] S133. Based on the vertical distance of one-third of the face region, calculate and determine the facial proportion parameters used to set the vertical height of the occlusal plate.

[0028] Preferably, in step S2, the medical image processing software is Mimics software; the condyle position is corrected based on the joint space and articular disc position information in the three-dimensional data of soft and hard tissues, specifically including the following sub-steps:

[0029] S21. Import the three-dimensional data of the bony structure from the three-dimensional data of soft and hard tissues into Mimics software, and segment and extract the three-dimensional model of the mandible containing the condyle.

[0030] S22. In Mimics software, based on the articular disc position information in the three-dimensional data of soft and hard tissues, measure the joint cavity width in the three-dimensional model of the mandible.

[0031] S23. Based on the joint cavity width, adjust the spatial position of the mandibular three-dimensional model in Mimics software so that the condyle is positioned at a preset target position in the glenoid fossa. The preset target position is the center position or musculoskeletal stability position determined by referring to the normal anatomical size range of the joint space and the relative anatomical relationship between the articular disc and the condyle.

[0032] S24. Output the three-dimensional coordinates of the condyle when it is positioned at the preset target location, as the corrected condyle position data.

[0033] Preferably, in step S3, the collaborative processing is performed in the EXO-CAD software; and in step S33, the morphology of the occlusal surface is adjusted based on the simulation results, specifically including the following sub-steps:

[0034] S331. Based on dynamic motion simulation, identify occlusal interference points within the range of protrusion and lateral movement;

[0035] S332. By adjusting the occlusal surface morphology, the identified occlusal interference points are eliminated, forming a functional occlusal surface morphology with uniform contact in the posterior tooth area and guidance in the anterior tooth area.

[0036] Preferably, step S4 specifically includes the following sub-steps:

[0037] S41. Convert the three-dimensional model of the bimaxillary occlusal plate into processing instructions. According to the processing instructions, control the selective laser sintering equipment to print layer by layer using polyetheretherketone material to form the outer structure of the bimaxillary occlusal plate entity.

[0038] S42. On the tissue surface of the outer layer structure after printing, a titanium coating is deposited by magnetron sputtering process to obtain the physical body of the bimaxillary occlusal plate.

[0039] S43. Have the patient wear the bimaxillary occlusal splint, use an electromyography device to collect surface electromyographic signals of the patient's masticatory muscles, and simultaneously use an occlusal analyzer to collect data on the occlusal pressure distribution on the occlusal surface of the bimaxillary occlusal splint.

[0040] Preferably, in step S5, the fit of the occlusal plate is determined based on the surface electromyography signal and the occlusal pressure distribution data, including: if the amplitude of the surface electromyography signal exceeds a preset electromyography threshold, or the uniformity of the occlusal pressure distribution data is lower than a preset pressure uniformity threshold, then it is determined to be an abnormal fit.

[0041] This invention also proposes a system for fabricating and testing a bimaxillary digital occlusal plate, used to implement any of the methods described above, the system comprising:

[0042] The data acquisition and preprocessing module is configured to perform preoperative masticatory muscle depolarization preprocessing on patients and acquire three-dimensional data of the temporomandibular joint soft and hard tissues, facial proportion data, dental arch morphology data, and mandibular dynamic movement trajectory data.

[0043] The data correction module is configured to input three-dimensional data of soft and hard tissues into medical image processing software. Based on the joint space and articular disc position information in the three-dimensional data of soft and hard tissues, and with reference to the patient's overbite and overjet, the position of the condyle is corrected so as to virtually position the condyle to the center position or musculoskeletal stability position in the glenoid fossa, and obtain the corrected condyle position data.

[0044] The collaborative design and model generation module is configured to collaboratively process corrected condylar position data, facial proportion data, dentition morphology data, and mandibular dynamic movement trajectory data to generate a 3D model of the bimaxillary occlusal plate; the collaborative processing includes:

[0045] Based on the corrected condylar position data, the rotation center of the virtual jawbone frame is set to determine the target jaw position;

[0046] Using facial proportion data as a constraint, the vertical height of the occlusal plate is calculated and set;

[0047] The dynamic motion trajectory data of the mandible is loaded into a virtual jaw frame for dynamic motion simulation, and the occlusal surface morphology is adjusted based on the simulation results.

[0048] Based on dental arch morphology data, and combined with vertical height and adjusted occlusal surface morphology, a three-dimensional model of the bimaxillary occlusal plate was constructed.

[0049] The manufacturing and testing module is configured to manufacture the bimaxillary occlusal plate based on the three-dimensional model of the bimaxillary occlusal plate, and to perform electromyographic activity testing and occlusal pressure distribution testing on patients wearing the bimaxillary occlusal plate to obtain surface electromyographic signals and occlusal pressure distribution data.

[0050] The feedback optimization module is configured to determine the fit of the occlusal plate based on surface electromyography signals and occlusal pressure distribution data. If the fit is determined to be abnormal, the collaborative design and model generation module is triggered to adjust the 3D model, and the manufacturing and testing module is triggered to re-execute the manufacturing and testing operations.

[0051] The present invention also proposes a terminal device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor. When the processor executes the computer program, it implements the steps of any of the above-described methods for manufacturing and testing a bimaxillary digital occlusal plate.

[0052] The present invention also proposes a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of any of the above-described methods for manufacturing and testing a bimaxillary digital occlusal plate.

[0053] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0054] (1) This invention first performs masticatory muscle depolarization pretreatment on the patient to eliminate occlusal compensation caused by muscle tension, ensuring the physiological authenticity of the subsequent data collection. By integrating CBCT bony structure data, MRI joint soft tissue data, 3D facial scan proportion data, oral scan dentition data, and mandibular dynamic trajectory data recorded by electronic facebow, a full-dimensional digital model of the patient is constructed, encompassing "joint-face-dentition-movement". Based on this full-dimensional model, the final occlusal plate is designed to significantly improve the fit between the final occlusal plate and the patient's individual anatomical structure and physiological state, effectively avoiding problems such as malocclusion, abnormal occlusal pressure distribution, and temporomandibular joint trauma caused by incomplete data in traditional methods.

[0055] (2) This invention not only utilizes dynamic motion trajectory data for simulation verification, but also uses it as design input to directly identify and eliminate occlusal interference points within the range of motion, such as protrusion and lateral movement, in the virtual jawbone frame, and forms a functional guiding slope, thereby ensuring smooth and unobstructed mandibular movement after wearing. Simultaneously, in medical imaging software, based on multiple anatomical relationships such as joint space, articular disc position, and overbite / overjet, the condyle is virtually corrected and positioned to a physiologically centered or musculoskeletal stable position, and this corrected position is used as the jaw position design benchmark. This design optimizes joint stress from the source, reduces abnormal joint load during mandibular movement, and effectively protects the function of the temporomandibular joint.

[0056] (3) The outer layer of the occlusal plate is manufactured using selective laser sintering (SLS) 3D printing combined with polyetheretherketone (PEEK) material, ensuring the product's high strength and wear resistance; the inner layer of the occlusal plate is formed with a nanoscale thickness through magnetron sputtering, improving biocompatibility and fit comfort with the dental arch. This specific combination of materials and processes gives the occlusal plate both good physical properties and a comfortable wearing experience.

[0057] (4) After the occlusal plate is manufactured, this invention introduces an objective quantitative testing process based on electromyography (EMG) and occlusal analyzer. The fit is scientifically assessed by analyzing surface EMG signals and occlusal pressure distribution data. When test results indicate an abnormal fit, the system automatically feeds back to the design stage, allowing for targeted adjustments to the 3D model and remanufacturing and testing, forming a complete closed loop of "design-manufacturing-testing-optimization." This mechanism not only ensures optimal fit before delivery but also provides a technical path for subsequent fine-tuning or long-term follow-up optimization, thereby guaranteeing the reliability and durability of the treatment effect. Attached Figure Description

[0058] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments, taken with reference to the accompanying drawings:

[0059] Figure 1 This is an overall flowchart of the method for fabricating and testing the bimaxillary digital occlusal plate of the present invention;

[0060] Figure 2 This is a flowchart of the data acquisition and preprocessing part of the bimaxillary digital occlusal plate manufacturing method of the present invention;

[0061] Figure 3 This is a flowchart of the data processing and model generation part of the bimaxillary digital occlusal plate fabrication method of the present invention;

[0062] Figure 4 This is the initial interface image of the right condyle position in the Mimics software;

[0063] Figure 5 This is a diagram showing the completed correction of the right condyle position in Mimics software.

[0064] Figure 6 This is the initial interface image of the left condyle position in the Mimics software;

[0065] Figure 7 This is a diagram showing the completed correction of the left condyle position in Mimics software.

[0066] Figure 8 This is a screenshot of the T-SCAN bite pressure distribution testing and analysis software interface;

[0067] Figure 9 This is a structural diagram of the bimaxillary digital occlusal plate fabrication and testing system of the present invention;

[0068] Figure 10 This is a schematic diagram of the structure of a computer system suitable for implementing the embodiments of the present invention. Detailed Implementation

[0069] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0070] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0071] Figure 1 The overall flowchart of the fabrication and testing method of the bimaxillary digital occlusal plate of the present invention is shown. Figure 2 The flowchart of the data acquisition and preprocessing part of the bimaxillary digital occlusal plate fabrication method of the present invention is shown; Figure 3 The flowchart of the data processing and model generation part of the bimaxillary digital occlusal plate fabrication method of the present invention is shown. Figure 3 yes Figure 2 (Continued image). Reference Figure 1-3 The present invention proposes a method for fabricating and testing a bimaxillary digital occlusal plate, comprising the following steps:

[0072] S1. Perform preoperative depolarization pretreatment on the masticatory muscles and obtain three-dimensional data of the temporomandibular joint soft and hard tissues, facial proportion data, dental arch morphology data, and mandibular dynamic movement trajectory data.

[0073] This step aims to obtain comprehensive data reflecting the patient's true physiological and anatomical condition. The specific implementation process is as follows:

[0074] First, patient screening and preoperative preparation are conducted. Patients meeting the clinical diagnostic criteria for severe tooth wear (e.g., occlusal wear depth ≥2mm, accompanied by difficulty chewing) are selected, and contraindications such as acute oral inflammation and temporomandibular joint tumors are excluded. The patient's oral cavity is cleaned preoperatively. Subsequently, a muscle relaxant (such as MyoTrac Infiniti) is used to electrically stimulate and depolarize the patient's masticatory muscles (mainly the masseter and temporalis muscles) to eliminate occlusal compensation caused by muscle tension or fatigue. Pretreatment parameters are typically set as follows: low-frequency pulses (frequency 20-50Hz), current intensity 0.1-0.5mA, and each treatment lasts 15 minutes. This step ensures that the subsequently acquired occlusal and motor data are based on a relaxed, uncompensated, and genuine physiological state.

[0075] After preprocessing, multimodal data acquisition is performed systematically:

[0076] (1) Obtaining three-dimensional data of bony structures: The patient's head is scanned using a cone-beam CT device (e.g., NewTom VGi) with a slice thickness of 0.3 mm to obtain high-precision three-dimensional data of bony tissues, including structures such as the jawbone and condyles, with a scanning accuracy of up to 0.05 mm. The data is exported in DICOM format.

[0077] (2) Acquiring soft tissue morphological data: Simultaneously scan the patient's temporomandibular joint using a magnetic resonance imaging (MRI) device (e.g., a 1.5T Siemens Avanto) (using a T2-weighted sequence) to clearly present the morphology and location of the articular disc, ligaments, and surrounding masticatory muscles. The MRI data obtained from this scan, together with the aforementioned CBCT data, constitutes the three-dimensional data of the temporomandibular joint's soft and hard tissues.

[0078] (3) Obtaining facial proportion data: A three-dimensional facial scanning device (such as Artec Eva) is used to perform a non-contact scan of the patient's face to obtain facial point cloud data. From this point cloud data, key reference planes (such as the eye-ear plane and the nasal floor plane) are located by software, and facial proportion parameters defined by these planes are measured, such as the vertical distance of the middle third of the face, to provide an aesthetic basis for setting a coordinated bite height.

[0079] (4) Obtain dental arch morphology data: Use an oral laser scanner (such as 3Shape TRIOS 5) to scan the intraoral dental arch, accurately obtain the three-dimensional morphology of the remaining dental arch, occlusal surface wear details and other data. The scan data is exported in STL format with an accuracy of 0.02mm.

[0080] (5) Acquiring dynamic mandibular movement trajectory data: The patient's mandibular movement trajectory is recorded using an electronic facebow (such as the Zebris system). Specific recorded parameters include: opening degree (vertical distance at maximum opening, averaging about 40 mm), protrusion (maximum horizontal distance of mandibular protrusion, averaging about 8 mm), and lateral movement range. The electronic facebow captures the dynamic movement path data of the mandible in three-dimensional space.

[0081] Through the above steps, a multi-dimensional, high-precision dataset covering "joint hard tissue - joint soft tissue - facial proportion - dental arch morphology - mandibular movement" was obtained, providing a complete data foundation for subsequent precise correction and collaborative design.

[0082] Continue to refer to Figure 1-3 The present invention proposes a method for fabricating and testing a bimaxillary digital occlusal plate, which further includes the following steps:

[0083] S2. Input the three-dimensional data of soft and hard tissues into the medical image processing software. Based on the joint space and articular disc position information in the three-dimensional data of soft and hard tissues, and with reference to the patient's overbite and overjet, correct the condyle position to virtually position the condyle in the center of the glenoid fossa or in a musculoskeletal stable position, and obtain the corrected condyle position data.

[0084] The purpose of this step is to correct the patient's condylar position, which may be deviated, to an ideal position that conforms to biomechanical stability and joint health, based on precise anatomical measurements and physiological relationships in a digital environment. This provides a core jaw space reference for subsequent occlusal plate design. Specifically, Mimics medical imaging software is preferred, and the step includes the following sub-steps:

[0085] S21. Import the three-dimensional data of the bony structure from the three-dimensional data of soft and hard tissues into Mimics software, and segment and extract the three-dimensional model of the mandible including the condyle.

[0086] The acquired cone-beam computed tomography (CBCT) 3D data of bony structures, stored in DICOM format, is imported into Mimics software. Within the software, grayscale thresholding segmentation technology is used to precisely separate and extract the maxilla and mandible, especially the bilateral condyles, from the image data based on the significant differences in CT values ​​between the bone and surrounding tissues. This generates a complete and accurate 3D surface model or voxel model of the mandible, ensuring the complete reproduction of the condylar anatomical morphology.

[0087] S22. In Mimics software, based on the articular disc position information in the three-dimensional data of soft and hard tissues, measure the joint cavity width in the three-dimensional model of the mandible.

[0088] In Mimics software, a unified reference coordinate system is first established for quantitative analysis. Typically, the midsagittal plane (MSP) and the eye-ear plane (FH) are defined as spatial reference planes. Subsequently, the acquired magnetic resonance imaging (MRI) data and the mandibular model reconstructed by CBCT are registered and aligned in the software to achieve spatial fusion of soft and hard tissue data.

[0089] To accurately measure the joint space, precise localization of the condyle is essential. Different quantitative localization methods can be employed for condyles of different shapes: for rounded condyles, the best-fit sphere algorithm can be used to determine their geometric center; for cases requiring assessment of the volume center, the centroid coordinates of the three-dimensional model can be calculated; for measurements corresponding to clinical landmarks, this can be determined by selecting specific bony landmarks (such as the top of the condyle) or their intersections on multi-planar reconstructed sections. After initial localization, the coordinates must be verified in the software's three views (coronal, sagittal, and axial planes), and the distance to the reference plane (such as the FH plane or MSP) must be recorded for bilateral symmetry comparison. This step ensures that all subsequent measurements are based on stable and repeatable anatomical reference points.

[0090] Based on this, specific measurement points or sections are selected within the glenoid fossa on the three-dimensional model. Using the previously determined condylar positioning points as a reference, the widths of the anterior gap between the anterior slope of the condyle and the anterior wall of the glenoid fossa, the superior gap between the top of the condyle and the top of the glenoid fossa, and the posterior gap between the posterior part of the condyle and the posterior wall of the glenoid fossa are quantitatively measured. These gap data are key indicators for evaluating the relationship between the current position and the ideal position of the condyle.

[0091] S23. Based on the joint cavity width, adjust the spatial position of the mandibular three-dimensional model in Mimics software so that the condyle is positioned at a preset target position within the glenoid fossa. The preset target position is the center position or musculoskeletal stability position determined by referring to the normal anatomical size range of the joint space and the relative anatomical relationship between the articular disc and the condyle.

[0092] This step is the core of the correction. In Mimics software, the joint space data measured in step S22, the specific positional relationship of the articular disc relative to the condyle clearly shown on MRI (e.g., whether the medial band of the articular disc is located above the anterior slope of the condyle), and the patient's actual overbite (vertical overjet depth of the upper and lower anterior teeth) and overjet (horizontal overjet) are comprehensively assessed. Based on clinical anatomical knowledge such as the normal physiological range of the joint space, a virtual three-dimensional model of the mandible is manipulated in the software, allowing it to undergo necessary translations and rotations in three-dimensional space. The goal of the adjustment is to find a theoretically most stable position for the condyle within the glenoid fossa, with the most uniform stress distribution. This position is usually defined as the central position (the condyle is basically centered within the glenoid fossa, with relatively uniform space in all directions) or, more functionally, the musculoskeletal stable position (the most stable position under muscle coordination). Through this virtual adjustment, the non-ideal positions such as posterior or superior condylar displacement that may occur due to tooth wear, joint compensation, etc., are essentially digitally corrected.

[0093] S24. Output the three-dimensional coordinates of the condyle when it is positioned at the preset target location, as the corrected condyle position data.

[0094] Once the virtual adjustment of the mandibular model is completed in Mimics software, ensuring that both condyles reach the preset center position or musculoskeletal stability position, the software will record and output the precise three-dimensional coordinates (X, Y, Z) of specific anatomical points of both condyles (e.g., the center of the condylar sphere determined by the best-fit sphere algorithm, or selected bony landmarks) in an established reference coordinate system (such as based on the FH plane and MSP). This set of coordinate data is the corrected condylar position data, which precisely defines the ideal relative position of the maxilla and mandible for this patient in space, and serves as the direct input parameter for the virtual articulation setting in subsequent occlusal plate design.

[0095] Continue to refer to Figure 1-3 The present invention proposes a method for fabricating and testing a bimaxillary digital occlusal plate, which further includes the following steps:

[0096] S3. The corrected condylar position data, facial proportion data, dental arch morphology data, and mandibular dynamic movement trajectory data are processed collaboratively to generate a three-dimensional model of the bimaxillary occlusal plate.

[0097] This step aims to fuse and process multi-source, heterogeneous patient data within a unified digital design environment, driving the generation of a fully personalized 3D model of the occlusal plate. Specifically, it is preferably implemented using EXO-CAD dental design software. This software employs a closed-loop design logic involving jaw registration, target condylar locking, facial proportion constraints, and dynamic trajectory verification. Its core relies on its occlusal plate module, virtual articulator module, and accompanying registration and measurement tools. Through the synergy of parametric adjustment and dynamic motion simulation, the final designed occlusal plate ensures static uniform contact and interference-free dynamic movement. The specific process is as follows:

[0098] S31. Using the corrected condylar position data as a reference, set the rotation center of the virtual jaw frame to determine the target jaw position.

[0099] Import the corrected condylar 3D coordinate data output from step S24 into the EXO-CAD software. In the software's articulation setting module, input this coordinate data as the condylar ball rotation center of the personalized virtual articulation. Based on the input condylar spatial position, the software automatically associates and sets corresponding parameters such as condylar guide angle. This operation accurately reproduces the ideal temporomandibular joint hinge axis in digital space, corrected based on the patient's individual anatomy, thereby locking the target jaw position and establishing a benchmark for spatial kinematics and jaw position relationships for the entire occlusal plate design.

[0100] S32. Using facial proportion data as a constraint, calculate and set the vertical height of the occlusal plate.

[0101] In EXO-CAD software, the facial proportion parameters extracted in step S1 are retrieved, particularly the vertical distance of the middle third of the face. The software's design modules (such as the occlusal plane design tool) use this data as a constraint for aesthetic and physiological harmony in their calculations. Typically, the target occlusal height is set as a moderate restorative elevation, for example, 1.5 to 2 millimeters, based on the patient's existing reduced occlusal height due to wear and tear, according to facial proportions. The software parameterizes this calculated target vertical distance and converts it into the required vertical thickness of the occlusal surface of the occlusal plate.

[0102] At the same time, facial proportion data is also used in the software’s aesthetic design functions (such as a module for designing smile features) to set the amount of exposure of the front teeth and the smile curve when smiling, thereby constraining the edge position of the occlusal plate in the front tooth area and the angle of the guiding slope, so as to ensure facial aesthetics and natural pronunciation while restoring function.

[0103] Subsequently, the software's dedicated occlusal plate design module is used to construct the basic three-dimensional morphology. This process includes: drawing edge lines that conform to the gingival morphology; setting a reasonable insertion direction and utilizing the undercut to ensure retention and removal; and adjusting core parameters such as offset, minimum thickness (usually not less than 1.5 mm), occlusal surface thickness, and surface smoothness to generate a preliminary base plate and occlusal surface shape that initially conforms to the dentition. The occlusal surface of the posterior teeth can be automatically leveled to lay the foundation for achieving uniform static contact later.

[0104] S33. Load the dynamic motion trajectory data of the mandible into the virtual jaw frame for dynamic motion simulation, and adjust the occlusal surface morphology based on the simulation results.

[0105] Before starting the dynamic motion simulation, personalized kinematic parameters derived from the patient's mandibular dynamic motion trajectory data or other analyses need to be further input into the virtual jaw frame with the condyle center already set. These parameters include the sagittal condylar angle reflecting the inclination of the joint protrusion path, the Bennett angle reflecting the lateral movement characteristics (i.e., the angle between the non-working side condyle movement trajectory and the sagittal plane during lateral mandibular movement), and the immediate lateral displacement, in order to accurately simulate the complex movement characteristics of the patient's temporomandibular joint.

[0106] Subsequently, the dynamic mandibular movement trajectory data, including mouth opening, protrusion, and lateral movement range, obtained in step S1, is loaded into the virtual mandibular frame. The software's dynamic occlusal simulation function is activated, driving the virtual model to strictly follow the patient's actual movement trajectory and personalized joint parameters in simulating protrusion, lateral movement, and opening / closing movements. During this process, the software automatically analyzes and identifies premature contact points or occlusal interference areas appearing within the dynamic movement range. Based on the analysis results of the software algorithm, the occlusal surface morphology of the occlusal plate is finely adjusted on the virtual model. The core objective is to eliminate all identified interference points and optimize the protrusion guide ramp and lateral guide to ensure smooth and unobstructed mandibular movement.

[0107] S34. Based on the dentition morphology data and combined with the vertical height and the adjusted occlusal surface morphology, a three-dimensional model of the bimaxillary occlusal plate is constructed.

[0108] Finally, in EXO-CAD, high-precision dental arch morphology data is used as the design basis. The occlusal plate design module is activated, and the software integrates all the above processing results: using the dental arch morphology as the occlusal surface basis, the set vertical height as the thickness constraint, and the dynamically adjusted and optimized occlusal surface morphology (including uniform posterior tooth contact points and functional anterior tooth guide ramps) as the functional surface, it automatically generates a 3D solid model of the bimaxillary occlusal plate that precisely matches the patient's upper and lower jaws. Further detail optimization of the model's edge morphology and polished transition areas is also possible, and the final output is a standard 3D file format (such as STL format) suitable for subsequent manufacturing.

[0109] Through the close integration and coordination of the above sub-steps, EXO-CAD software deeply integrates static anatomical data, dynamic functional data, and aesthetic proportion data, realizing the intelligent and precise generation of personalized instrument models from patient data.

[0110] The condyle repositioning procedure was performed within the Mimics software interface. Quantitative measurements ensured that the condyle was precisely adjusted to its ideal centered position within the glenoid fossa. The specific operation and verification process are as follows:

[0111] like Figure 4 As shown, after establishing a three-dimensional coordinate system in the software, the system automatically generates initial measurement lines and reference points on the surface of the condyle model and displays the initial measurement values, such as 5.02mm, 2.74mm, and 4.38mm in the figure. These data represent the initial position of the right condyle (i.e., the upper gap, the posterior gap, and the anterior gap).

[0112] Based on the initial measurement results, the right condyle model was first virtually moved and adjusted. After adjustment, the system generated the following... Figure 5 The parameter comparison interface shown in the figure. Key measurements (such as 5.64mm, 5.71mm, and 1.84mm) are used to quantify the displacement changes after the right condyle is moved, ensuring that the adjustment on the right side conforms to the preset anatomical standards (i.e., the superior space, posterior space, and anterior space).

[0113] Subsequently, a synchronous correction operation was performed on the left condyle. Figure 6 The diagram shows the initial interface for correcting the left condyle position. The measured values ​​of the upper, posterior, and anterior gaps (e.g., 5.30 mm, 5.31 mm, and 4.65 mm) reflect the initial asymmetry or abnormal position, providing a data benchmark for precise adjustment of the left side.

[0114] After the adjustment of the left condyle was completed, the system appeared as follows. Figure 7 The diagram shows the completed correction status. Key measurements in the diagram (such as 6.18mm, 6.56mm, and 2.04mm) are used to quantify the displacement changes after the left condyle is moved, ensuring that the left adjustment conforms to the preset anatomical standards (i.e., the superior space, posterior space, and anterior space).

[0115] Figure 5 , Figure 7 The interface uses key final measurements to visually compare the spatial positions of the bilateral condyles after adjustment, verifying whether they have met the preset standards for symmetry and stability. Auxiliary measurements such as 1.84mm and 2.04mm in the illustration further confirm the idealization of key indicators such as the joint space, indicating that the condyles have been successfully corrected from abnormal positions to a musculoskeletal stable position, providing an accurate basis for the subsequent occlusal plate design in terms of jaw spatial relationships.

[0116] Continue to refer to Figure 1-3 A method for fabricating and testing a dual-jaw digital occlusal splint proposed by the present invention further includes the following steps:

[0117] S4. According to the three-dimensional model of the dual-jaw occlusal splint, fabricate a physical entity of the dual-jaw occlusal splint, and conduct electromyogram activity testing and occlusal pressure distribution testing on patients wearing the physical entity of the dual-jaw occlusal splint to obtain surface electromyogram signals and occlusal pressure distribution data.

[0118] This step converts the digital model into a physical entity and objectively and quantitatively verifies the functional adaptability of the physical product in terms of physiology and mechanics. The specific implementation includes two closely connected stages: fabrication and testing:

[0119] S41. Convert the three-dimensional model of the dual-jaw occlusal splint into processing instructions. According to the processing instructions, control a selective laser sintering device to print layer by layer using polyether ether ketone material to form the outer layer structure of the physical entity of the dual-jaw occlusal splint.

[0120] Import the dual-jaw occlusal splint three-dimensional model data generated in step S3 and stored in STL format into the slicing and control software supporting the selective laser sintering device. The software slices the three-dimensional model along the vertical direction and generates processing instructions (G-code) for controlling the laser scanning path for each layer. Subsequently, load the medical-grade polyether ether ketone powder material into the device (such as EOS P 810). Under the protection of an inert gas environment, the device controls the laser beam to selectively scan the powder cross-section of each layer according to the G-code instructions, causing it to melt and solidify into shape. Through layer-by-layer stacking, finally fabricate an outer layer functional structure of the occlusal splint physical entity with high strength, wear resistance, and biocompatibility. The printing layer thickness is usually not less than 0.8 mm to ensure the structural strength.

[0121] S42. On the tissue surface of the printed outer layer structure, deposit a titanium coating through a magnetron sputtering process to obtain the physical entity of the dual-jaw occlusal splint.

[0122] After performing pretreatment such as cleaning on the polyether ether ketone occlusal splint outer layer structure that has completed SLS printing, place it in the vacuum chamber of the magnetron sputtering device. Use high-purity titanium as the target material. Apply an electric field in an argon gas environment to bombard the titanium target with argon ions, sputtering out titanium atoms. These titanium atoms are deposited on the tissue surface (i.e., the inner surface that fits the patient's dentition) of the polyether ether ketone outer layer structure, forming a titanium coating with a precisely controllable thickness (usually in the range of 200 - 800 nanometers), which is dense and firmly bonded. This titanium coating constitutes the inner layer that directly contacts the dentition of the occlusal splint. It not only improves biocompatibility and wearing comfort, but also ensures high-precision fitting with the dentition due to its nanoscale thickness and precise morphological replication.至此,完整的双颌咬合板实体制造完成,需经环氧乙烷灭菌等处理后备用。At this point, the fabrication of the complete dual-jaw occlusal splint physical entity is completed, and it needs to be sterilized with ethylene oxide and other treatments before being put into use.

[0123] S43. Have the patient wear the bimaxillary occlusal splint, use an electromyography device to collect surface electromyographic signals of the patient's masticatory muscles, and simultaneously use an occlusal analyzer to collect data on the occlusal pressure distribution on the occlusal surface of the bimaxillary occlusal splint.

[0124] Functional testing was conducted immediately after the patient fitted the bite plate. First, multiple surface electrode pads from the electromyography (EMG) device were attached to the skin surface of the patient's major masticatory muscles (such as the masseter and temporalis muscles). The patient was instructed to perform several natural chewing movements (such as chewing gum simulants). The EMG device collected and recorded the surface electromyographic signals generated by muscle contractions during the chewing cycle in real time. These signals contained characteristic information such as the amplitude and frequency of muscle activity, used to quantitatively assess the coordination and force intensity of muscle activity.

[0125] Simultaneously, the occlusal analyzer sensor chip (such as the T-SCAN III occlusal analyzer) is placed between the upper and lower occlusal surfaces of the occlusal plate. The patient is instructed to perform several light bites until the maximum intercuspal position. The sensor records and analyzes the distribution of occlusal force across the entire occlusal surface of the occlusal plate at the moment of occlusal contact. The system generates occlusal pressure distribution data, visually displaying the location, pressure magnitude, and uniformity of the occlusal contact point in graphical and numerical form. The real-time occlusal contact data collected by the T-SCAN occlusal analyzer is synchronously transmitted to its accompanying analysis software and generates data such as... Figure 8 The interface showing the comprehensive test results.

[0126] Through the above tests, an objective dataset was obtained to evaluate the fit and functional effect of the occlusal plate: surface electromyography signals (reflecting neuromuscular function) and occlusal pressure distribution data (reflecting mechanical load distribution).

[0127] Continue to refer to Figure 1-3 The present invention proposes a method for fabricating and testing a bimaxillary digital occlusal plate, which further includes the following steps:

[0128] S5. Determine the fit of the occlusal plate based on surface electromyography signals and occlusal pressure distribution data; if the fit is determined to be abnormal, return to step S3, adjust the three-dimensional model of the bimaxillary occlusal plate, and repeat the operation of step S4.

[0129] This step aims to scientifically evaluate the fit of the occlusal plate based on objective physiological and mechanical test data, and drive design iteration when the preset standards are not met until the optimal state is reached.

[0130] In practice, the surface electromyography (EMG) signals and occlusal pressure distribution data collected in step S43 are first analyzed. EMG signal analysis primarily assesses the amplitude of muscle electrical activity during the mastication cycle. If it consistently exceeds a preset EMG threshold based on an ideal functional state, it suggests potential over-tension or functional compensation in the masticatory muscles. Occlusal pressure analysis assesses the uniformity of occlusal force distribution across the entire occlusal surface. If the calculated uniformity index is lower than a preset pressure uniformity threshold, it indicates a risk of localized stress concentration. A combined assessment of these two analyses is made: only when the EMG signal amplitude does not exceed the preset EMG threshold and the occlusal pressure distribution uniformity is not lower than the preset pressure uniformity threshold is the occlusal plate considered to be well-fitted, and the process ends. If either condition is not met, it is considered an abnormal fit. Once an abnormal fit is identified, a closed-loop optimization process is initiated. The system will locate potential design problems based on specific abnormal indicators (such as excessively high electromyographic amplitude or hot spots in the pressure distribution map), and then return to step S3 to make targeted adjustments to the original 3D model in the EXO-CAD software, such as digitally adjusting the interference area or correcting the guide slope parameters.

[0131] After the adjustment is completed, step S4 is executed again, which involves manufacturing a new occlusal plate based on the new model and immediately conducting a new round of testing. This iterative cycle of "testing-judgment-feedback-adjustment-remanufacturing-retesting" will continue until the occlusal plate fit is determined to be normal based on the test data, thereby ensuring that the final product achieves personalized optimality in both neuromuscular coordination and biomechanical distribution.

[0132] Further reference Figure 9 As a implementation of the above method, this invention also proposes a fabrication and testing system for a bimaxillary digital occlusal plate, which can be applied to various electronic devices. The bimaxillary digital occlusal plate fabrication and testing system 200 includes the following modules:

[0133] The data acquisition and preprocessing module 210 is configured to perform preoperative masticatory muscle depolarization preprocessing on patients and acquire three-dimensional data of the patient's temporomandibular joint soft and hard tissues, facial proportion data, dental arch morphology data, and mandibular dynamic movement trajectory data.

[0134] The data correction module 220 is configured to input three-dimensional data of soft and hard tissues into medical image processing software, and based on the joint space and articular disc position information in the three-dimensional data of soft and hard tissues, and with reference to the patient's overbite and overjet, correct the condyle position so as to virtually position the condyle to the center position or musculoskeletal stability position in the glenoid fossa, and obtain the corrected condyle position data.

[0135] The collaborative design and model generation module 230 is configured to collaboratively process the corrected condylar position data, facial proportion data, dentition morphology data, and mandibular dynamic movement trajectory data to generate a three-dimensional model of the bimaxillary occlusal plate; wherein, the collaborative processing includes:

[0136] Based on the corrected condylar position data, the rotation center of the virtual jawbone frame is set to determine the target jaw position;

[0137] Using facial proportion data as a constraint, the vertical height of the occlusal plate is calculated and set;

[0138] The dynamic motion trajectory data of the mandible is loaded into a virtual jaw frame for dynamic motion simulation, and the occlusal surface morphology is adjusted based on the simulation results.

[0139] Based on dental arch morphology data, and combined with vertical height and adjusted occlusal surface morphology, a three-dimensional model of the bimaxillary occlusal plate was constructed.

[0140] The manufacturing and testing module 240 is configured to manufacture a bimaxillary occlusal plate based on a three-dimensional model of the bimaxillary occlusal plate, and to perform electromyographic activity testing and occlusal pressure distribution testing on patients wearing the bimaxillary occlusal plate to obtain surface electromyographic signals and occlusal pressure distribution data.

[0141] The feedback optimization module 250 is configured to determine the fit of the occlusal plate based on surface electromyography signals and occlusal pressure distribution data. If the fit is determined to be abnormal, the collaborative design and model generation module 230 is triggered to adjust the three-dimensional model, and the manufacturing and testing module 240 is triggered to re-execute the manufacturing and testing operations.

[0142] The present invention also proposes a terminal device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor. When the processor executes the computer program, it implements the steps of any of the above-described methods for manufacturing and testing a bimaxillary digital occlusal plate.

[0143] The present invention also proposes a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of any of the above-described methods for manufacturing and testing a bimaxillary digital occlusal plate.

[0144] The following is for reference. Figure 10 It shows a schematic diagram of the structure of a computer system 300 suitable for implementing terminal devices or servers of the present invention. Figure 10 The terminal device or server shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of the present invention.

[0145] like Figure 10As shown, the computer system 300 includes a central processing unit (CPU) 301, which can perform various appropriate actions and processes based on programs stored in read-only memory (ROM) 302 or programs loaded from storage section 308 into random access memory (RAM) 303. The RAM 303 also stores various programs and data required for the operation of the computer system 300. The CPU 301, ROM 302, and RAM 303 are interconnected via a bus 304. An input / output (I / O) interface 305 is also connected to the bus 304.

[0146] The following components are connected to I / O interface 305: an input section 306 including a keyboard, mouse, etc.; an output section 307 including a liquid crystal display (LCD) and speakers, etc.; a storage section 308 including a hard disk, etc.; and a communication section 309 including a network interface card such as a LAN card and a modem, etc. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to I / O interface 305 as needed. A removable medium 311, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 310 as needed so that computer programs read from it can be installed into storage section 308 as needed.

[0147] In particular, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 309, and / or installed from removable medium 311. When the computer program is executed by central processing unit (CPU) 301, it performs the functions defined in the methods of this invention. It should be noted that the computer-readable medium described in this invention can be a computer-readable signal medium or a computer-readable medium or any combination thereof. The computer-readable medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this invention, a computer-readable medium can be any tangible medium containing or storing a program that can be used by or in connection with an instruction execution system, apparatus, or device. In this invention, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable medium that can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on a computer-readable medium can be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0148] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0149] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0150] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention is not limited to the specific combination of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this invention.

Claims

1. A method for fabricating and testing a bimaxillary digital occlusal plate, characterized in that, Includes the following steps: S1. Perform preoperative depolarization pretreatment on the masticatory muscles of the patient, and obtain three-dimensional data of the temporomandibular joint soft and hard tissues, facial proportion data, dental arch morphology data, and mandibular dynamic movement trajectory data of the patient. This includes the following sub-steps: S11. Three-dimensional data of the bony structure of the patient's jawbone and condyle were obtained by using cone-beam CT equipment. S12. The patient's temporomandibular joint disc and ligament soft tissue morphology data are obtained by scanning with a magnetic resonance imaging device. The three-dimensional data of the bony structure and the soft tissue morphology data constitute the three-dimensional data of the soft and hard tissues. S13. Use a three-dimensional facial scanning device to scan and obtain the patient's facial point cloud data, and extract the facial proportion data from the facial point cloud data; S14. Obtain the morphological data of the dental arch using an oral laser scanner; S15. The dynamic movement trajectory data of the mandible is obtained by using an electronic face bow recorder; S2. Input the three-dimensional data of soft and hard tissues into medical image processing software. Based on the joint space and articular disc position information in the three-dimensional data of soft and hard tissues, and with reference to the patient's overbite and overjet, correct the condyle position so as to virtually position the condyle to the center position or musculoskeletal stability position in the glenoid fossa, and obtain the corrected condyle position data. In step S2, the medical image processing software is Mimics software; the condyle position is corrected based on the joint space and articular disc position information in the three-dimensional data of soft and hard tissues, specifically including the following sub-steps: S21. Import the three-dimensional data of the bony structure in the three-dimensional data of the soft and hard tissues into the Mimics software, and extract the three-dimensional model of the mandible containing the condyle. S22. In the Mimics software, based on the articular disc position information in the three-dimensional data of soft and hard tissues, the joint cavity width in the three-dimensional model of the mandible is measured. S23. Based on the joint cavity gap width, adjust the spatial position of the mandibular three-dimensional model in the Mimics software so that the condyle is positioned at a preset target position in the glenoid fossa. The preset target position is a central position or musculoskeletal stability position determined by referring to the normal anatomical size range of the joint space and the relative anatomical relationship between the articular disc and the condyle. Among them, different quantitative positioning methods are adopted for condyles with different shapes: for condyles with rounded shapes, the best-fit sphere algorithm is used to determine their geometric center; for cases where the volume center needs to be evaluated, the centroid coordinates of their three-dimensional model are calculated. S24. Output the three-dimensional coordinates of the condyle when it is positioned at the preset target position, as the corrected condyle position data; S3. The corrected condylar position data, facial proportion data, dental arch morphology data, and mandibular dynamic movement trajectory data are collaboratively processed to generate a three-dimensional model of the bimaxillary occlusal plate; wherein, the collaborative processing includes: S31. Using the corrected condylar position data as a reference, set the rotation center of the virtual jawbone frame to determine the target jaw position; S32. Using the facial proportion data as a constraint, calculate and set the vertical height of the occlusal plate; S33. Load the dynamic motion trajectory data of the mandible into the virtual jaw frame for dynamic motion simulation, and adjust the occlusal surface morphology based on the simulation results; S34. Based on the dental arch morphology data, and combined with the vertical height and the adjusted occlusal surface morphology, construct a three-dimensional model of the bimaxillary occlusal plate; In step S3, the collaborative processing is performed in the EXO-CAD software; and in step S33, the morphology of the occlusal surface is adjusted based on the simulation results, specifically including the following sub-steps: S331. Based on the dynamic motion simulation, identify the occlusal interference points existing in the range of forward and lateral movements; S332. By adjusting the occlusal surface morphology, the identified occlusal interference points are eliminated, forming a functional occlusal surface morphology with uniform contact in the posterior tooth area and guidance in the anterior tooth area. S4. Based on the three-dimensional model of the bimaxillary occlusal plate, manufacture the bimaxillary occlusal plate entity, and perform electromyographic activity test and occlusal pressure distribution test on the patient wearing the bimaxillary occlusal plate entity to obtain surface electromyographic signals and occlusal pressure distribution data. S5. Determine the fit of the occlusal plate based on the surface electromyography signal and occlusal pressure distribution data; if the fit is determined to be abnormal, return to step S3, adjust the three-dimensional model of the bimaxillary occlusal plate, and repeat the operation of step S4.

2. The method for fabricating and testing a bimaxillary digital occlusal plate according to claim 1, characterized in that, In step S13, the facial proportion data is extracted from the facial point cloud data, specifically including the following sub-steps: S131. Locate the spatial positions of the eye-ear plane and the nasal base plane in the facial point cloud data; S132. Measure the vertical distance of one-third of the area in the plane defined by the eye-ear plane and the nasal base plane; S133. Based on the vertical distance of one-third of the area in the face, calculate and determine the facial proportion parameters used to set the vertical height of the bite plate.

3. The method for fabricating and testing a bimaxillary digital occlusal plate according to claim 1, characterized in that, Step S4 specifically includes the following sub-steps: S41. Convert the three-dimensional model of the bimaxillary occlusal plate into processing instructions. According to the processing instructions, control the selective laser sintering equipment to print layer by layer using polyetheretherketone material to form the outer structure of the bimaxillary occlusal plate entity. S42. On the tissue surface of the outer layer structure after printing, a titanium coating is deposited by magnetron sputtering process to obtain the physical body of the bimaxillary occlusal plate. S43. Have the patient wear the bimaxillary occlusal plate, use an electromyography device to collect surface electromyographic signals of the patient's masticatory muscles, and simultaneously use an occlusal analyzer to collect data on the occlusal pressure distribution on the occlusal surface of the bimaxillary occlusal plate.

4. The method for fabricating and testing a bimaxillary digital occlusal plate according to claim 1, characterized in that, In step S5, the fit of the occlusal plate is determined based on the surface electromyography signal and the occlusal pressure distribution data, including: if the amplitude of the surface electromyography signal exceeds a preset electromyography threshold, or the uniformity of the occlusal pressure distribution data is lower than a preset pressure uniformity threshold, then it is determined to be an abnormal fit.

5. A system for fabricating and testing a digital occlusal plate for bimaxillary jaws, characterized in that, The system for implementing the method of any one of claims 1 to 4 comprises: The data acquisition and preprocessing module is configured to perform preoperative masticatory muscle depolarization preprocessing on patients and acquire three-dimensional data of the temporomandibular joint soft and hard tissues, facial proportion data, dental arch morphology data, and mandibular dynamic movement trajectory data of the patients. The data correction module is configured to input the three-dimensional data of soft and hard tissues into medical image processing software, and based on the joint space and articular disc position information in the three-dimensional data of soft and hard tissues, and with reference to the patient's overbite and overjet, correct the condyle position so as to virtually position the condyle to the center position or musculoskeletal stability position in the glenoid fossa, and obtain the corrected condyle position data. The collaborative design and model generation module is configured to collaboratively process the corrected condylar position data, facial proportion data, dentition morphology data, and mandibular dynamic movement trajectory data to generate a three-dimensional model of the bimaxillary occlusal plate; wherein, the collaborative processing includes: Based on the corrected condylar position data, the rotation center of the virtual jawbone frame is set to determine the target jaw position; Using the facial proportion data as a constraint, the vertical height of the occlusal plate is calculated and set; The dynamic motion trajectory data of the mandible is loaded into the virtual jaw frame for dynamic motion simulation, and the occlusal surface morphology is adjusted based on the simulation results. Based on the dental arch morphology data, and combined with the vertical height and the adjusted occlusal surface morphology, a three-dimensional model of the bimaxillary occlusal plate is constructed. The manufacturing and testing module is configured to manufacture the bimaxillary occlusal plate entity based on the three-dimensional model of the bimaxillary occlusal plate, and to perform electromyographic activity testing and occlusal pressure distribution testing on patients wearing the bimaxillary occlusal plate entity to obtain surface electromyographic signals and occlusal pressure distribution data. The feedback optimization module is configured to determine the fit of the occlusal plate based on the surface electromyography signal and the occlusal pressure distribution data; if the fit is determined to be abnormal, the collaborative design and model generation module is triggered to adjust the three-dimensional model, and the manufacturing and testing module is triggered to re-execute the manufacturing and testing operations.

6. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method for manufacturing and testing a bimaxillary digital occlusal plate as described in any one of claims 1 to 4.

7. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the method for manufacturing and testing a bimaxillary digital occlusal plate as described in any one of claims 1 to 4.

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