Digitalized method, device, equipment and storage medium for occlusal reconstruction of oral cavity

Abstract

The application belongs to the technical field of medical oral cavity repair, and discloses a digital-based oral cavity occlusion reconstruction method, device, equipment and storage medium. The method comprises the following steps: acquiring head CBCT data and oral cavity data of a current patient, and establishing a skull model; marking key information points on the skull model to generate marking information; performing data analysis on the marking information to obtain key occlusal surface information; determining occlusal plane position information according to the key occlusal surface information; establishing an occlusion reconstruction model according to the occlusal plane position information; simulating occlusion movement according to the occlusion reconstruction model to obtain a simulation result; when the simulation result does not conform to a preset abnormal scene, determining that the occlusion reconstruction model is a target occlusion reconstruction model; and performing cutting processing according to the target occlusion reconstruction model to obtain a denture prosthesis of the current patient. In the above manner, the fitting accuracy of the denture prosthesis is improved, the process flow is saved, and the production speed of the denture prosthesis is accelerated.

Description

Technical Field

[0001] This invention relates to the field of medical oral restoration technology, and in particular to a digitally based oral occlusal reconstruction method, device, equipment and storage medium. Background Technology

[0002] Traditional occlusal reconstruction requires taking a final impression from the patient's mouth, pouring a plaster model, transferring the articulator, using a wax model to restore the occlusion, making a silicone mold from the wax model, relining the silicone model with resin material poured into the patient's mouth, reshaping the teeth, and completing a temporary restoration. Traditional techniques make it difficult to reference the nasal-auricular plane, leading to significant errors in occlusal reconstruction. Furthermore, occlusal reconstruction requires extensive manual experience, and errors during the surgeon's operation are prone to occur, often necessitating manual adjustments later. The entire process is labor-intensive and time-consuming.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this invention is to provide a digitally based oral occlusal reconstruction method, device, equipment, and storage medium, aiming to solve the technical problems of cumbersome, complex, and labor-intensive traditional occlusal reconstruction processes in the prior art.

[0005] To achieve the above objectives, the present invention provides a digitally based oral occlusal reconstruction method, the method comprising the following steps:

[0006] Acquire the current patient's head CBCT data and oral cavity data to build a skull model;

[0007] Key information points are marked in the skull model to generate marked information;

[0008] Data analysis is performed on the marked information to obtain key imaginative surface information;

[0009] Based on the key imaginary surface information, determine the position information of the occlusal plane;

[0010] Based on the occlusal plane position information and the occlusal database, an occlusal reconstruction model is established;

[0011] Based on the described bite reconstruction model, bite motion simulation was performed to obtain simulation results;

[0012] When the simulation results do not match the preset abnormal scenario, the bite reconstruction model is determined to be the target bite reconstruction model;

[0013] The denture prosthesis for the current patient is obtained by cutting and machining according to the target occlusal reconstruction model.

[0014] Optionally, the oral cavity data includes maxillary model data, mandibular model data, and occlusal relationship data. The step of marking key information points in the skull model and generating marking information includes:

[0015] Get mouse position information;

[0016] Based on the mouse position information, a ray is generated, and the ray position information is determined;

[0017] Based on the ray position information and the skull model, determine whether there is an intersection between the ray and the model;

[0018] When the ray intersects with the model, obtain the location information of the intersection point;

[0019] Mark the intersection points according to the location information and record the number of marks;

[0020] When the number of markers is greater than or equal to a preset number, marker information is generated.

[0021] Optionally, the key imagination surface information includes the position information of the frame ear plane, the position information of the nasal alar ear plane, the position information of the mandible plane, the position information of the triangular plane, the position information of the HIP plane, and the position information of the modified HIP plane. The step of performing data analysis on the marked information to obtain the key imagination surface information includes:

[0022] Based on the marked information, the key imaginary line segment information is determined;

[0023] Based on the key imaginary line segment information and the skull model, determine the position information of the frame ear plane, the modified HIP plane, the HIP plane, and the mandibular plane;

[0024] The position information of the nasal auricle plane is determined based on the position information of the frame ear plane;

[0025] The triangular plane position information is determined based on the improved HIP plane position information.

[0026] Optionally, determining the occlusal plane position information based on the key imaginary surface information includes:

[0027] Obtain the positional relationship between the nasolabial plane and the occlusal plane, the positional relationship between the HIP plane and the occlusal plane, and the positional relationship between the triangular plane and the occlusal plane;

[0028] Based on the positional relationship between the nasal auricular plane and the occlusal plane, the positional relationship between the HIP plane and the occlusal plane, the positional relationship between the triangular plane and the occlusal plane, and the positional information of the nasal auricular plane, the positional information of the triangular plane and the HIP plane, the occlusal plane angle information is determined.

[0029] Obtain the positional relationship between the mandible and the occlusal plane;

[0030] The occlusal plane height information is determined based on the positional relationship between the mandible and the occlusal plane, as well as the positional information of the mandibular plane.

[0031] The position information of the occlusal plane is determined based on the occlusal plane angle information and the occlusal plane height information.

[0032] Optionally, establishing an occlusal reconstruction model based on the occlusal plane position information and the occlusal database includes:

[0033] Based on the occlusal plane position information and the occlusal database, an initial occlusal reconstruction model is established;

[0034] Based on the skull model, determine the current patient's dental arch information and tooth proportion information;

[0035] Based on the dental arch information and tooth proportion information, the arch curvature and tooth proportion of the initial occlusal reconstruction model are adjusted to obtain the occlusal reconstruction model.

[0036] Optionally, the step of simulating occlusal movements based on the occlusal reconstruction model to obtain simulation results includes:

[0037] Based on the bite reconstruction model, determine the bite trajectory information and the extreme position information corresponding to the bite trajectory information;

[0038] Based on the occlusal reconstruction model, determine the lateral occlusal movement trajectory information, protruding occlusal movement trajectory information, condylar movement trajectory information, and maximum mouth opening data;

[0039] The occlusal trajectory information, extreme position information, lateral occlusal movement trajectory information, protruding occlusal movement trajectory information, condylar movement trajectory information, and maximum mouth opening data are imported into a preset simulation software to obtain simulation results.

[0040] Optionally, the preset abnormal scenarios include contact abnormal scenarios and force abnormal scenarios. After simulating bite motion based on the bite reconstruction model and obtaining the simulation results, the process further includes:

[0041] When the simulation results match the preset abnormal scenario, the bite reconstruction model is adjusted to obtain a new bite reconstruction model;

[0042] Based on the new occlusal reconstruction model, return to the step of performing occlusal motion simulation based on the occlusal reconstruction model to obtain simulation results.

[0043] Furthermore, to achieve the above objectives, the present invention also proposes a digitally based oral occlusion reconstruction device, the digitally based oral occlusion reconstruction device comprising:

[0044] The data acquisition module is used to acquire the current patient's head CBCT data and oral cavity data to build a skull model;

[0045] The bite determination module is used to mark key information points in the skull model and generate marking information.

[0046] The bite determination module is also used to perform data analysis on the marking information to obtain key imaginary surface information;

[0047] The bite determination module is also used to determine the bite plane position information based on the key imaginary surface information;

[0048] The occlusal reconstruction module is used to establish an occlusal reconstruction model based on the occlusal plane position information and the occlusal database.

[0049] The bite reconstruction module is also used to simulate bite motion based on the bite reconstruction model and obtain simulation results;

[0050] The bite reconstruction module is also used to determine the bite reconstruction model as the target bite reconstruction model when the simulation results do not match the preset abnormal scenario.

[0051] The occlusal reconstruction module is also used to perform cutting and machining based on the target occlusal reconstruction model to obtain the current patient's prosthesis.

[0052] Furthermore, to achieve the above objectives, the present invention also proposes a digitally based oral occlusion reconstruction device, which includes: a memory, a processor, and a digitally based oral occlusion reconstruction program stored in the memory and executable on the processor. The digitally based oral occlusion reconstruction program is configured to implement the steps of the digitally based oral occlusion reconstruction method described above.

[0053] Furthermore, to achieve the above objectives, the present invention also proposes a storage medium storing a digitally based oral occlusion reconstruction program, which, when executed by a processor, implements the steps of the digitally based oral occlusion reconstruction method described above.

[0054] In this invention, a skull model is established by acquiring the current patient's head CBCT data and oral cavity data. Key information points are marked in the skull model to generate marker information. Data analysis is performed on the marker information to obtain key occlusal plane information. Based on the key occlusal plane information, the position information of the occlusal plane is determined. Based on the occlusal plane position information and an occlusal database, an occlusal reconstruction model is established. Occlusal motion simulation is performed based on the occlusal reconstruction model to obtain simulation results. When the simulation results do not match the preset abnormal scenarios, the occlusal reconstruction model is determined as the target occlusal reconstruction model. The target occlusal reconstruction model is then processed to obtain the current patient's prosthesis. Compared to traditional occlusal reconstruction, which is prone to large errors, this invention uses CBCT data to determine the patient's anatomical landmarks, utilizes digital software to more quickly and accurately confirm the position of the occlusal plane, analyzes the maxillofacial anatomy, performs skeletal analysis tests to preview the restoration plan, and simulates occlusal reconstruction motion tests. The tested teeth are then computer-aidedly fabricated, digitally and accurately automatically cut, and finally polished. After completion, the prosthesis is placed in the patient's mouth to achieve occlusal reconstruction. It can effectively solve the technical problems of cumbersome manual grinding process, complex process and excessive manpower consumption in traditional occlusal reconstruction, improve the fitting accuracy of denture restorations, save process steps, speed up the production of denture restorations, shorten the patient's waiting time in the clinic, and reduce the manual operation of the process and the cost of restoration. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the structure of a digitally based oral occlusal reconstruction device in the hardware operating environment of the embodiment of the present invention;

[0056] Figure 2 This is a flowchart illustrating the first embodiment of the digital-based oral occlusal reconstruction method of the present invention.

[0057] Figure 3 This is a triangular plane schematic diagram of an embodiment of the digital oral occlusion reconstruction method of the present invention;

[0058] Figure 4 This is a schematic diagram of the occlusal plane of an embodiment of the digital oral occlusal reconstruction method of the present invention;

[0059] Figure 5 This is a structural block diagram of the first embodiment of the digital oral occlusion reconstruction device of the present invention.

[0060] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0061] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0062] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of a digitally based oral occlusal reconstruction device for the hardware operating environment involved in the embodiments of the present invention.

[0063] like Figure 1 As shown, the digital-based oral occlusion reconstruction device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk drive. The memory 1005 may also optionally be a storage device independent of the aforementioned processor 1001.

[0064] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on digitally based oral occlusion reconstruction devices and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0065] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and a digitally based oral occlusion reconstruction program.

[0066] exist Figure 1 In the digital-based oral occlusion reconstruction device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and memory 1005 in the digital-based oral occlusion reconstruction device of the present invention can be set in the digital-based oral occlusion reconstruction device. The digital-based oral occlusion reconstruction device calls the digital-based oral occlusion reconstruction program stored in the memory 1005 through the processor 1001 and executes the digital-based oral occlusion reconstruction method provided in the embodiment of the present invention.

[0067] This invention provides a digital-based oral occlusal reconstruction method, referring to... Figure 2 , Figure 2 This is a schematic flowchart of the first embodiment of a digital-based oral occlusion reconstruction method of the present invention.

[0068] In this embodiment, the digital-based oral occlusion reconstruction method includes the following steps:

[0069] Step S10: Obtain the current patient's head CBCT data and oral cavity data, and establish a skull model.

[0070] It should be noted that the execution subject of this embodiment is a computer, which is equipped with all the relevant software required to run the digital oral occlusion reconstruction program. The occlusion reconstruction of the patient's oral cavity can be achieved through the digital oral occlusion reconstruction program.

[0071] It is understood that the "current patient" refers to the patient currently undergoing oral occlusal reconstruction. The CBCT (Cone Beam CT) is a cone-beam computed tomography imaging device. Its principle is that an X-ray generator performs circular DR (digital radiography) around the subject using a low dose of radiation (typically around 10 mA). The data obtained from the "intersection" of multiple digital images around the subject is then "reconstructed" in a computer to obtain a three-dimensional image. The head CBCT data refers to the CBCT image information of the current patient's entire head obtained using cone-beam CT. The oral cavity data refers to the oral cavity structural information obtained within the current patient's mouth, including maxillary model data, mandibular model data, and occlusal relationship data. The maxillary model data is three-dimensional data of the maxillary model, the mandibular model is three-dimensional data of the mandibular model, and the occlusal relationship is three-dimensional data of the intraoral occlusal relationship. The skull model is a three-dimensional skull model established based on the overall head structure and oral cavity structure.

[0072] In practice, cone-beam computed tomography (CBCT) images of the patient's entire head are captured, and intraoral information is scanned to obtain complete three-dimensional data of the maxillary model, mandibular model, and occlusal relationship. After obtaining this data, a corresponding skull model is built based on a digital oral occlusal reconstruction program.

[0073] Step S20: Mark key information points in the skull model to generate marker information.

[0074] Further, step S20 includes: acquiring mouse position information, generating a ray based on the mouse position information, determining the ray position information, determining whether the ray and the skull model intersect based on the ray position information and the skull model, acquiring the intersection position information when the ray and the model intersect, marking the intersection position information and recording the number of marks, and generating marking information when the number of marks is greater than or equal to a preset number.

[0075] It should be understood that the mouse position information refers to the position of the mouse on the computer screen, the ray position information refers to the position of the ray, and the intersection point position information refers to the position of the intersection point between the skull model and the ray. The marker can be in any form, such as marking the intersection point with a sphere. This embodiment does not limit this. The number of markers refers to the number of intersection points that are marked. The preset number is a pre-set number of markers, such as 5, which can be set in a digital oral occlusion reconstruction program. This embodiment does not limit this and it can be adjusted according to the actual situation. The marking information includes information on all marked intersection points.

[0076] It should be noted that when the number of markers is less than the preset number, the process returns to the step of generating a ray based on the mouse position information and determining the ray position information.

[0077] In the specific implementation, the position of the mouse on the screen is obtained, and a ray is drawn in the scene based on the mouse position. The intersection of the ray and the model is detected. If an intersection exists, a sphere is created at the intersection position, and the number of markers is updated. If the number of markers is less than 5, the ray is drawn again to check for intersections and the intersections are marked until 5 intersections are marked, so as to achieve the marking of key hard tissue anatomical information.

[0078] Step S30: Perform data analysis on the marked information to obtain key imaginary surface information.

[0079] It is understood that the key imaginary surface information refers to the positional information of important imaginary planes related to the occlusal plane, including the positional information of the occlusal plane, the positional information of the nasolabial plane, the positional information of the mandibular plane, the positional information of the triangular plane, the positional information of the HIP plane, and the positional information of the modified HIP plane.

[0080] Further, step S30 includes: determining key imaginary line segment information based on the marking information; determining the position information of the frame ear plane, the modified HIP plane, the HIP plane, and the mandibular plane based on the key imaginary line segment information and the skull model; determining the position information of the nasal auricle plane based on the frame ear plane position information; and determining the position information of the triangular plane based on the modified HIP plane position information.

[0081] It should be understood that the key imaginary line segment information refers to the line segment formed by connecting the marked intersection points; two points form a line, and three points can form a plane. The frame-ear plane, also called the axial-orbital plane, is the imaginary plane formed by the lowest points of the two infraorbital margins and the upper edge of the auricle, also called the orbital plane. It is defined based on the plane formed by connecting the lowest points of the two infraorbital margins and the upper edge of the external auditory canal on the lateral head radiograph and bone tissue. It is a reference horizontal plane used in anatomy. The frame-ear plane position information refers to the location of the frame-ear plane in the skull model. The modified HIP plane is the plane formed by the intersection of the pterygoid grooves of the two sphenoid bones and the openings of the incisor canals. The pterygoid groove is the notch formed by the pterygoid process of the sphenoid bone at the pterygoid notch and the posterior part of the maxillary tuberosity. The modified HIP plane position information refers to the location of the modified HIP plane in the skull model. The HIP plane is the plane formed by the left and right pterygoid grooves of the maxilla and the incisal papillae. It is roughly parallel to the horizontal plate of the palatine bone and does not change much with age. Anatomically, it serves as the reference plane for the connection between the maxilla and the occlusal plane. The HIP plane position information refers to its location in the skull model. The mandibular plane can be determined in three ways: by a line tangent to the lower edge of the mandibular angle from the submental point, a tangent to the lowest point of the mandibular lower edge, and a line connecting the mandibular angle and the vertex of the mandible. The mandibular plane position information refers to its location in the skull model.

[0082] It should be noted that the nasal alar plane is an imaginary plane formed by the center points of the two nasal alar and the midpoint of the tragus, tilted forward by approximately 12.0° compared to the frame alar plane. The position information of the nasal alar plane refers to its location within the skull model; based on the frame alar plane's position information, the position of the nasal alar plane can be accurately determined. The triangular plane, namely the Bonwill triangle, is a triangle formed by connecting the vertices of the middle portions of the left and right condyles to the mesial contact points of the mandibular central incisors. This triangle is an equilateral triangle with equal sides. Figure 3 The triangular plane diagram shown can be constructed by drawing a plane at 26° to the modified HIP plane from the tops of the two condyles. The position information of the triangular plane is the location of the Bonwill triangular plane in the skull model. The position of the triangular plane can be accurately determined based on the position information of the modified HIP plane.

[0083] Understandably, based on the above-mentioned planar positioning rules, deep learning of big data can automatically identify and generate data analysis after the marker information is determined.

[0084] In the specific implementation, based on the marker information and skull model, skeletal analysis is performed to determine the position information of the frame ear plane, the modified HIP plane, the HIP plane, the mandibular plane, the nasal auricular plane, and the triangular plane.

[0085] Step S40: Determine the position information of the occlusal plane based on the key imaginary surface information.

[0086] Further, step S40 includes: obtaining the positional relationship between the nasolabial plane and the occlusal plane, the positional relationship between the HIP plane and the occlusal plane, and the positional relationship between the triangular plane and the occlusal plane; determining the occlusal plane angle information based on the positional relationship between the nasolabial plane and the occlusal plane, the positional relationship between the HIP plane and the occlusal plane, the positional relationship between the triangular plane and the occlusal plane, and the positional information of the nasolabial plane, the positional information of the triangular plane, and the positional information of the HIP plane; obtaining the positional relationship between the mandible and the occlusal plane; determining the occlusal plane height information based on the positional relationship between the mandible and the occlusal plane and the positional information of the mandibular plane; and determining the occlusal plane position information based on the occlusal plane angle information and the occlusal plane height information.

[0087] It should be understood that the occlusal plane is an imaginary plane formed by the mesial incisal angle of the mandibular central incisor and the distobuccal cusps of the mandibular second molars on both sides. Within this plane, the dental arch and each tooth have a specific positional relationship with the temporomandibular joint and the horizontal plane. The occlusal plane angle information refers to the angle data required to determine the occlusal plane, the occlusal plane height information refers to the height data required to determine the occlusal plane, and the occlusal plane position information refers to the location of the occlusal plane in the skull model.

[0088] It should be noted that the positional relationship between the nasolabial plane and the occlusal plane refers to a difference of less than 3° between them. The positional relationship between the HIP plane and the occlusal plane refers to the HIP plane coinciding with the occlusal plane after being shifted downwards a certain distance. The positional relationship between the triangular plane and the occlusal plane refers to the average angle between the Bonwill triangle plane and the occlusal plane being 26°, thus allowing the determination of the occlusal plane's angle data. The positional relationship between the mandible and the occlusal plane refers to the presence of a retromolar pad in the mandible, which can be used as a guide to confirm the accurate height of the occlusal plane, thus allowing the determination of the occlusal plane's height data.

[0089] In practical implementation, the angle data of the occlusal plane is determined based on the nasal-auricular plane position information, the triangular plane position information, and the HIP plane position information. The height data of the occlusal plane is determined based on the mandibular plane position information. Figure 4 As shown, the position of the occlusal plane in the skull model is determined based on the angle and height data of the occlusal plane.

[0090] Step S50: Based on the occlusal plane position information and the occlusal database, establish an occlusal reconstruction model.

[0091] Further, step S50 includes: establishing an initial occlusal reconstruction model based on the occlusal plane position information and the occlusal database; determining the current patient's dental arch information and tooth proportion information based on the skull model; and adjusting the dental arch curvature and tooth proportion of the initial occlusal reconstruction model based on the dental arch information and tooth proportion information to obtain the occlusal reconstruction model.

[0092] It is understood that the occlusion database consists of tooth shape data generated from the occlusal plane. The tooth shape is designed by professionals combining the occlusal plane, Wilson curves, and Spee curves. Only the overall size proportions of the teeth and the arch curvature need to be adjusted. The upper and lower teeth are in a locked occlusion state, maintaining relative contact. The occlusion database contains occlusion reconstruction templates. The initial occlusion reconstruction model is the occlusion reconstruction template in the occlusion database, before adjusting the overall size proportions of the teeth and the arch curvature. The arch information refers to the arch curvature, and the tooth proportion information refers to the overall size proportions of the teeth. The occlusion reconstruction model is the adjusted initial occlusion reconstruction model.

[0093] In practice, computer-aided design software is used to design an initial occlusal reconstruction model on the occlusal plane using a professional template for occlusal reconstruction from an occlusal database. Based on the skull model, the arch curvature and overall size ratio of the teeth of the current patient are determined. The arch curvature and tooth ratio of the initial occlusal reconstruction model are then adjusted to obtain the occlusal reconstruction model, which can show the effect of intraoral occlusal reconstruction.

[0094] Step S60: Simulate occlusal motion based on the occlusal reconstruction model to obtain simulation results.

[0095] Further, step S60 includes: determining occlusal trajectory information and corresponding limit position information based on the occlusal reconstruction model; determining lateral occlusal movement trajectory information, protruding occlusal movement trajectory information, condylar movement trajectory information, and maximum mouth opening data based on the occlusal reconstruction model; and importing the occlusal trajectory information, limit position information, lateral occlusal movement trajectory information, protruding occlusal movement trajectory information, condylar movement trajectory information, and maximum mouth opening data into a preset simulation software to obtain simulation results.

[0096] It should be understood that the occlusal trajectory information refers to the occlusal trajectory reconstructed using facebow software, and the extreme position information refers to the extreme points corresponding to the occlusal trajectory. The lateral occlusal movement trajectory information refers to trajectory data related to lateral occlusal movement, the protruding occlusal movement trajectory information refers to trajectory data related to protruding occlusal movement, the condylar movement trajectory information refers to trajectory data related to condylar movement, and the maximum opening width data refers to the maximum opening width of the occlusal reconstruction model. The preset simulation software refers to UPCAD software, which can perform simulations on the occlusal reconstruction model. The simulation results refer to the data obtained from simulating occlusion.

[0097] In the specific implementation, the facebow software is used to obtain the occlusal trajectory and its extreme points of the occlusal reconstruction, extract the lateral occlusal movement trajectory, protruding occlusal movement trajectory, maximum opening degree and condylar movement trajectory, import these specific data into UPCAD software, perform occlusal simulation, test the occlusal movement of the occlusal reconstruction model, and obtain simulation results.

[0098] Step S70: When the simulation results do not match the preset abnormal scenario, determine the bite reconstruction model as the target bite reconstruction model.

[0099] It should be noted that the preset abnormal scenarios refer to abnormal phenomena that occur during occlusal simulation, including abnormal contact scenarios and abnormal force scenarios. The abnormal contact scenario refers to premature contact in occlusion, and the abnormal force scenario refers to local abnormalities in collision force. The target occlusal reconstruction model refers to the final required occlusal reconstruction model.

[0100] In practice, no abnormalities were observed in the occlusal reconstruction model obtained through occlusal simulation, indicating that the occlusal reconstruction model can be applied to the current patient and used as the final occlusal reconstruction model.

[0101] Furthermore, after step S70, the method further includes: when the simulation result matches a preset abnormal scenario, adjusting the occlusal reconstruction model to obtain a new occlusal reconstruction model, and returning to step S60 based on the new occlusal reconstruction model.

[0102] It is understood that the adjustment to the occlusal reconstruction model can be an elevation, which will change the original occlusal trajectory, but the maximum limit of condylar movement will not change, nor will the lateral condylar guide slope.

[0103] In practice, if premature contact or local abnormalities in collision force occur, the occlusal reconstruction model will be adjusted until no abnormalities occur in the occlusal simulation.

[0104] Step S80: Perform cutting and machining according to the target occlusal reconstruction model to obtain the current patient's prosthesis.

[0105] In practice, the exported data is formatted, processed in a cutting machine series, and polished to obtain the current patient's prosthetic restoration. After the dentist prepares the teeth, the processed prosthetic restoration is placed into the patient's mouth using adhesive to complete the occlusal reconstruction and restoration.

[0106] In this embodiment, by acquiring the current patient's head CBCT data and oral cavity data, a skull model is established. Key information points are marked in the skull model to generate marker information. Data analysis is performed on the marker information to obtain key occlusal plane information. Based on the key occlusal plane information, the position information of the occlusal plane is determined. Based on the occlusal plane position information and the occlusal database, an occlusal reconstruction model is established. Occlusal motion simulation is performed based on the occlusal reconstruction model to obtain simulation results. When the simulation results do not match the preset abnormal scenario, the occlusal reconstruction model is determined as the target occlusal reconstruction model. The target occlusal reconstruction model is then processed to obtain the current patient's prosthesis. This embodiment uses CBCT data to determine the patient's anatomical landmarks, utilizes digital software to more quickly and accurately confirm the position of the occlusal plane, analyzes the maxillofacial anatomy, performs skeletal analysis tests to preview the restoration plan, and simulates occlusal reconstruction motion tests. The tested teeth are then computer-aidedly fabricated, digitally and accurately automatically cut, and finally polished. After completion, the prosthesis is placed in the patient's mouth to achieve occlusal reconstruction. It can effectively solve the technical problems of cumbersome manual grinding process, complex process and excessive manpower consumption in traditional occlusal reconstruction, improve the fitting accuracy of denture restorations, save process steps, speed up the production of denture restorations, shorten the patient's waiting time in the clinic, and reduce the manual operation of the process and the cost of restoration.

[0107] Furthermore, this embodiment of the invention also proposes a storage medium storing a digitally based oral occlusion reconstruction program, which, when executed by a processor, implements the steps of the digitally based oral occlusion reconstruction method described above.

[0108] Reference Figure 5 , Figure 5 This is a structural block diagram of the first embodiment of the digital oral occlusion reconstruction device of the present invention.

[0109] like Figure 5 As shown, the digital-based oral occlusal reconstruction device proposed in this embodiment of the invention includes:

[0110] The data acquisition module 10 is used to acquire the current patient's head CBCT data and oral cavity data to build a skull model.

[0111] The bite determination module 20 is used to mark key information points in the skull model and generate marking information.

[0112] The bite determination module 20 is also used to perform data analysis on the marking information to obtain key imaginary surface information.

[0113] The bite determination module 20 is also used to determine the bite plane position information based on the key imaginary surface information.

[0114] The occlusal reconstruction module 30 is used to establish an occlusal reconstruction model based on the occlusal plane position information and the occlusal database.

[0115] The bite reconstruction module 30 is also used to simulate bite motion based on the bite reconstruction model and obtain simulation results.

[0116] The bite reconstruction module 30 is further configured to determine the bite reconstruction model as the target bite reconstruction model when the simulation results do not match the preset abnormal scenario.

[0117] The occlusal reconstruction module 30 is also used to perform cutting and machining according to the target occlusal reconstruction model to obtain the current patient's prosthesis.

[0118] In this embodiment, by acquiring the current patient's head CBCT data and oral cavity data, a skull model is established. Key information points are marked in the skull model to generate marker information. Data analysis is performed on the marker information to obtain key occlusal plane information. Based on the key occlusal plane information, the position information of the occlusal plane is determined. Based on the occlusal plane position information and the occlusal database, an occlusal reconstruction model is established. Occlusal motion simulation is performed based on the occlusal reconstruction model to obtain simulation results. When the simulation results do not match the preset abnormal scenario, the occlusal reconstruction model is determined as the target occlusal reconstruction model. The target occlusal reconstruction model is then processed to obtain the current patient's prosthesis. This embodiment uses CBCT data to determine the patient's anatomical landmarks, utilizes digital software to more quickly and accurately confirm the position of the occlusal plane, analyzes the maxillofacial anatomy, performs skeletal analysis tests to preview the restoration plan, and simulates occlusal reconstruction motion tests. The tested teeth are then computer-aidedly fabricated, digitally and accurately automatically cut, and finally polished. After completion, the prosthesis is placed in the patient's mouth to achieve occlusal reconstruction. It can effectively solve the technical problems of cumbersome manual grinding process, complex process and excessive manpower consumption in traditional occlusal reconstruction, improve the fitting accuracy of denture restorations, save process steps, speed up the production of denture restorations, shorten the patient's waiting time in the clinic, and reduce the manual operation of the process and the cost of restoration.

[0119] In one embodiment, the oral cavity data includes maxillary model data, mandibular model data, and occlusal relationship data. The occlusal determination module 20 is also used to acquire mouse position information.

[0120] Based on the mouse position information, a ray is generated, and the ray position information is determined;

[0121] Based on the ray position information and the skull model, determine whether there is an intersection between the ray and the model;

[0122] When the ray intersects with the model, obtain the location information of the intersection point;

[0123] Mark the intersection points according to the location information and record the number of marks;

[0124] When the number of markers is greater than or equal to a preset number, marker information is generated.

[0125] In one embodiment, the key imaginary surface information includes the position information of the lateral auricular plane, the position information of the nasal auricular plane, the position information of the mandibular plane, the position information of the triangular plane, the position information of the HIP plane, and the position information of the modified HIP plane. The occlusion determination module 20 is further used to determine the key imaginary line segment information based on the marking information.

[0126] Based on the key imaginary line segment information and the skull model, determine the position information of the frame ear plane, the modified HIP plane, the HIP plane, and the mandibular plane;

[0127] The position information of the nasal auricle plane is determined based on the position information of the frame ear plane;

[0128] The triangular plane position information is determined based on the improved HIP plane position information.

[0129] In one embodiment, the occlusion determination module 20 is further configured to acquire the positional relationship between the nasolabial plane and the occlusal plane, the positional relationship between the HIP plane and the occlusal plane, and the positional relationship between the triangular plane and the occlusal plane;

[0130] Based on the positional relationship between the nasal auricular plane and the occlusal plane, the positional relationship between the HIP plane and the occlusal plane, the positional relationship between the triangular plane and the occlusal plane, and the positional information of the nasal auricular plane, the positional information of the triangular plane and the HIP plane, the occlusal plane angle information is determined.

[0131] Obtain the positional relationship between the mandible and the occlusal plane;

[0132] The occlusal plane height information is determined based on the positional relationship between the mandible and the occlusal plane, as well as the positional information of the mandibular plane.

[0133] The position information of the occlusal plane is determined based on the occlusal plane angle information and the occlusal plane height information.

[0134] In one embodiment, the occlusion reconstruction module 30 is further configured to establish an initial occlusion reconstruction model based on the occlusion plane position information and the occlusion database;

[0135] Based on the skull model, determine the current patient's dental arch information and tooth proportion information;

[0136] Based on the dental arch information and tooth proportion information, the arch curvature and tooth proportion of the initial occlusal reconstruction model are adjusted to obtain the occlusal reconstruction model.

[0137] In one embodiment, the bite reconstruction module 30 is further configured to determine bite trajectory information and extreme position information corresponding to the bite trajectory information based on the bite reconstruction model;

[0138] Based on the occlusal reconstruction model, determine the lateral occlusal movement trajectory information, protruding occlusal movement trajectory information, condylar movement trajectory information, and maximum mouth opening data;

[0139] The occlusal trajectory information, extreme position information, lateral occlusal movement trajectory information, protruding occlusal movement trajectory information, condylar movement trajectory information, and maximum mouth opening data are imported into a preset simulation software to obtain simulation results.

[0140] In one embodiment, the preset abnormal scenarios include contact abnormal scenarios and force abnormal scenarios. The bite reconstruction module 30 is also used to adjust the bite reconstruction model to obtain a new bite reconstruction model when the simulation results match the preset abnormal scenarios.

[0141] Based on the new occlusal reconstruction model, return to the step of performing occlusal motion simulation based on the occlusal reconstruction model to obtain simulation results.

[0142] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solutions of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any restrictions on this.

[0143] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of this invention. In practical applications, those skilled in the art can select some or all of the workflow to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here.

[0144] In addition, for technical details not described in detail in this embodiment, please refer to the digital-based oral occlusion reconstruction method provided in any embodiment of the present invention, which will not be repeated here.

[0145] Furthermore, it should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0146] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0147] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory (ROM) / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0148] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A digitally based oral occlusal reconstruction method, characterized in that, The digital-based oral occlusal reconstruction method includes: Acquire the current patient's head CBCT data and oral cavity data to build a skull model; Marking key information points in the skull model and generating marking information specifically includes: obtaining mouse position information; generating a ray based on the mouse position information and determining the ray position information; determining whether the ray and the skull model intersect; when the ray and the model intersect, obtaining the intersection position information; marking the intersection position information and recording the number of markings; and generating marking information when the number of markings is greater than or equal to a preset number. Data analysis is performed on the marked information to obtain key imaginative surface information. This key imaginative surface information includes the position information of the frame ear plane, the position information of the nasal alar plane, the position information of the mandible plane, the position information of the triangular plane, the position information of the HIP plane, and the position information of the modified HIP plane. Specifically, this includes: determining key imaginative line segment information based on the marked information; determining the position information of the frame ear plane, the modified HIP plane, the HIP plane, and the mandible plane based on the key imaginative line segment information and the skull model; determining the position information of the nasal alar plane based on the frame ear plane position information; and determining the position information of the triangular plane based on the modified HIP plane position information. Based on the key imaginary surface information, the occlusal plane position information is determined, specifically including: obtaining the positional relationship between the nasolabial plane and the occlusal plane, the positional relationship between the HIP plane and the occlusal plane, and the positional relationship between the triangular plane and the occlusal plane; based on the positional relationships between the nasolabial plane and the occlusal plane, the HIP plane and the occlusal plane, the triangular plane and the occlusal plane, and the positional information of the nasolabial plane, the triangular plane and the HIP plane, the occlusal plane angle information is determined, and the positional relationship between the mandible and the occlusal plane is obtained. Based on the positional relationship between the mandible and the occlusal plane and the positional information of the mandibular plane, the height information of the occlusal plane is determined. Based on the angle information of the occlusal plane and the height information of the occlusal plane, the positional information of the occlusal plane is determined. The positional relationship between the nasal auricular plane and the occlusal plane is such that the difference between the nasal auricular plane and the occlusal plane is less than or equal to 3°. The positional relationship between the HIP plane and the occlusal plane is such that the HIP plane is shifted downward by a preset distance and coincides with the occlusal plane. The positional relationship between the triangular plane and the occlusal plane is such that the average value of the angle formed by the Bonwill triangular plane and the occlusal plane is equal to 26°. Based on the occlusal plane position information and the occlusal database, an occlusal reconstruction model is established; Based on the described bite reconstruction model, bite motion simulation was performed to obtain simulation results; When the simulation results do not match the preset abnormal scenario, the bite reconstruction model is determined to be the target bite reconstruction model; The denture prosthesis for the current patient is obtained by cutting and machining according to the target occlusal reconstruction model.

2. The method as described in claim 1, characterized in that, The step of establishing an occlusal reconstruction model based on the occlusal plane position information and the occlusal database includes: Based on the occlusal plane position information and the occlusal database, an initial occlusal reconstruction model is established; Based on the skull model, determine the current patient's dental arch information and tooth proportion information; Based on the dental arch information and tooth proportion information, the arch curvature and tooth proportion of the initial occlusal reconstruction model are adjusted to obtain the occlusal reconstruction model.

3. The method as described in claim 1, characterized in that, The step of simulating occlusal movements based on the occlusal reconstruction model to obtain simulation results includes: Based on the bite reconstruction model, determine the bite trajectory information and the extreme position information corresponding to the bite trajectory information; Based on the occlusal reconstruction model, determine the lateral occlusal movement trajectory information, protruding occlusal movement trajectory information, condylar movement trajectory information, and maximum mouth opening data; The occlusal trajectory information, extreme position information, lateral occlusal movement trajectory information, protruding occlusal movement trajectory information, condylar movement trajectory information, and maximum mouth opening data are imported into a preset simulation software to obtain simulation results.

4. The method according to any one of claims 1 to 3, characterized in that, The preset abnormal scenarios include contact abnormal scenarios and force abnormal scenarios. After simulating bite motion based on the bite reconstruction model and obtaining the simulation results, the process further includes: When the simulation results match the preset abnormal scenario, the bite reconstruction model is adjusted to obtain a new bite reconstruction model; Based on the new occlusal reconstruction model, return to the step of performing occlusal motion simulation based on the occlusal reconstruction model to obtain simulation results.

5. A digitally based oral occlusal reconstruction device, characterized in that, The digital-based oral occlusal reconstruction device includes: The data acquisition module is used to acquire the current patient's head CBCT data and oral cavity data to build a skull model; The bite determination module is used to mark key information points in the skull model and generate marking information. The occlusion determination module is also used to perform data analysis on the marking information to obtain key imaginary surface information, which includes the position information of the frame ear plane, the position information of the nasal alar plane, the position information of the mandibular plane, the position information of the triangular plane, the position information of the HIP plane, and the position information of the modified HIP plane. The bite determination module is also used to determine the bite plane position information based on the key imaginary surface information; The occlusal reconstruction module is used to establish an occlusal reconstruction model based on the occlusal plane position information and the occlusal database. The bite reconstruction module is also used to simulate bite motion based on the bite reconstruction model and obtain simulation results; The bite reconstruction module is also used to determine the bite reconstruction model as the target bite reconstruction model when the simulation results do not match the preset abnormal scenario. The occlusal reconstruction module is also used to perform cutting and machining based on the target occlusal reconstruction model to obtain the current patient's prosthesis; The bite determination module is also used to obtain mouse position information; Based on the mouse position information, a ray is generated, and the ray position information is determined; Based on the ray position information and the skull model, determine whether there is an intersection between the ray and the model; When the ray intersects with the model, obtain the location information of the intersection point; Mark the intersection points according to the location information and record the number of marks; When the number of markers is greater than or equal to a preset number, marker information is generated; The occlusion determination module is also used to obtain the positional relationship between the nasolabial plane and the occlusal plane, the positional relationship between the HIP plane and the occlusal plane, and the positional relationship between the triangular plane and the occlusal plane; Based on the positional relationships between the nasal auricular plane and the occlusal plane, the positional relationships between the HIP plane and the occlusal plane, the positional relationships between the triangular plane and the occlusal plane, and the positional information of the nasal auricular plane, the positional information of the triangular plane and the HIP plane, the occlusal plane angle information is determined. The positional relationship between the nasal auricular plane and the occlusal plane is such that the difference between the nasal auricular plane and the occlusal plane is less than or equal to 3°. The positional relationship between the HIP plane and the occlusal plane is such that the HIP plane coincides with the occlusal plane after being translated downward by a preset distance. The positional relationship between the triangular plane and the occlusal plane is such that the average value of the angle formed by the Bonwill triangular plane and the occlusal plane is equal to 26°. Obtain the positional relationship between the mandible and the occlusal plane; The occlusal plane height information is determined based on the positional relationship between the mandible and the occlusal plane, as well as the positional information of the mandibular plane. The occlusal plane position information is determined based on the occlusal plane angle information and occlusal plane height information. The engagement determination module is also used to determine key imaginary line segment information based on the marking information; Based on the key imaginary line segment information and the skull model, determine the position information of the frame ear plane, the modified HIP plane, the HIP plane, and the mandibular plane; The position information of the nasal auricle plane is determined based on the position information of the frame ear plane; The triangular plane position information is determined based on the improved HIP plane position information.

6. A digitally based oral occlusal reconstruction device, characterized in that, The device includes: a memory, a processor, and a digitally based oral occlusion reconstruction program stored in the memory and executable on the processor, the digitally based oral occlusion reconstruction program being configured to implement the steps of the digitally based oral occlusion reconstruction method as described in any one of claims 1 to 4.

7. A storage medium, characterized in that, The storage medium stores a digitally based oral occlusion reconstruction program, which, when executed by a processor, implements the steps of the digitally based oral occlusion reconstruction method as described in any one of claims 1 to 4.

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