Method and device for digital virtual occlusal alignment in orthognathic surgery

Abstract

Provided in the present invention is a method for digital virtual occlusal alignment in orthognathic surgery. The method comprises: acquiring a three-dimensional digital oral cavity model of a patient, the three-dimensional digital oral cavity model comprising jaw bones and dentitions; segmenting the jaw bones in the three-dimensional digital oral cavity model to form a segmentation model; calibrating reference position information on the segmentation model, and determining an adjustment rule; and aligning the segmented jaw bones in the segmentation model until the adjustment rule is satisfied.

Description

Methods and equipment for digital virtual bite alignment in orthognathic surgery Technical Field

[0001] This invention relates to the field of oral medicine, and in particular to a method and device for digital virtual occlusion alignment in orthognathic surgery. Background Technology

[0002] Establishing the final occlusion after orthognathic surgery is a crucial step in combined orthognathic and orthodontic treatment. Statistics show that segmented surgery accounts for over 45.8% of orthognathic surgeries. Manual final occlusion alignment is time-consuming, lacks precision, and heavily relies on the surgeon's experience. Currently, the main clinical approach to final occlusion alignment involves manually cutting the plaster model using a surgical model and then repositioning the bone blocks using hot melt adhesive to establish a new occlusal relationship. However, manual alignment is time-consuming, labor-intensive, cumbersome, prone to inaccurate positioning and large errors, and the model's fragility can lead to data loss. Furthermore, there are significant differences in surgeons' alignment skills and aesthetic perceptions. Training surgeons for treatment plans is lengthy. Experienced surgeons can quickly locate and correct bone blocks based on the specific deformity, but younger surgeons often lack standardized procedures for complex cases, such as those with many segments. Experience-guided segmented alignment designs may result in unnecessary trauma or suboptimal occlusion for the patient. Additionally, the scientific validity and clinical feasibility of final occlusion lack unified quantitative standards, making it difficult to systematically define the effectiveness of treatment. Summary of the Invention

[0003] In view of the problems in the prior art, the present invention provides a method for digital virtual bite alignment in orthognathic surgery, the method comprising:

[0004] Obtain a three-dimensional digital model of the patient's oral cavity, which includes the jawbone and dentition;

[0005] The jawbone in the aforementioned three-dimensional digital model of the oral cavity is segmented to form a segmentation model;

[0006] Reference position information is marked on the segmentation model, and adjustment rules are determined;

[0007] The segmented jawbones in the segmentation model are pieced together until the adjustment rules are met. Further, reference price ranges for each of the sub-sample sets are predicted in a distributed server environment.

[0008] Furthermore, the oral cavity three-dimensional digital model is formed by registering a radiographic scanning model and an intraoral optical scanning model.

[0009] Furthermore, the reference position information includes reference points, reference lines, and reference planes used to define the positions of the jawbone and teeth in the segmentation model.

[0010] Furthermore, the adjustment rules are based on several reference items and their standard ranges set according to the reference location information.

[0011] Furthermore, the assembly steps for assembling the segmented jawbones in the segmentation model are as follows:

[0012] Establish anterior occlusion;

[0013] Align the lower dentition;

[0014] Establish posterior occlusion;

[0015] Align the maxillary dentition.

[0016] Furthermore, if the adjustment rule is not satisfied after performing the matching step, the matching step is repeated until the adjustment rule is satisfied.

[0017] Furthermore, the occlusal model after the matching was completed was scored using the ABO-OGS method.

[0018] Furthermore, the ABO-OGS scoring items include alignment, marginal ridge height, buccal-lingual inclination, occlusal relationship, occlusal contact, overbite, and adjacent tooth contact.

[0019] The present invention also provides a device for digital virtual bite alignment in orthognathic surgery, the device comprising:

[0020] Processor; and

[0021] A memory is configured to store computer-executable instructions, which, when executed, cause the processor to perform the operations described above.

[0022] The present invention also provides a computer-readable medium for storing instructions that, when executed, cause the system to perform the operations described above.

[0023] The method and equipment for digital virtual occlusion alignment in orthognathic surgery are applicable to both whole-piece and segmented jawbone alignment. Utilizing digital virtual technology, the final occlusion is virtually aligned through four main steps: first, establishing anterior tooth occlusion; second, aligning the mandibular dentition; third, establishing posterior tooth occlusion; and finally, aligning the maxillary dentition. The overall technical approach is guided by the anterior bone block and anterior tooth occlusion. Compared to existing manual alignment methods using plaster models, which require establishing posterior teeth for occlusion stability, the present invention does not rely on posterior teeth for occlusion stability, thus better meeting the aesthetic and functional requirements of orthognathic surgery. The virtual alignment of the present invention visualizes the entire process of three-dimensional reconstruction of tooth roots, avoiding bone resection damage to tooth roots. Alignment with tooth roots ensures clinical feasibility, and further employs the American Board of Orthodontic Specialists Objective Rating System (ABO-OGS) to score the virtual final occlusion, improving the consistency of efficacy evaluation. Attached Figure Description

[0024] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 shows a flowchart of the orthognathic digital virtual bite alignment method of the present invention;

[0026] Figures 2 to 6 show schematic diagrams of the various stages of the assembly process in one embodiment of the present invention, wherein the arrows in each figure indicate the adjustment direction of the segmented jawbone.

[0027] Figure 7 shows a flowchart of virtual terminal occlusion ABO-OGS scoring in one embodiment of the present invention;

[0028] Figure 8 illustrates the functional modules of an exemplary system that can be used in various embodiments of the present invention.

[0029] The same or similar reference numerals in the accompanying drawings represent the same or similar parts. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings.

[0031] In a typical configuration of the present invention, the terminal, the device of the service network, and the trusted party all include one or more processors (e.g., a central processing unit (CPU)), input / output interfaces, network interfaces, and memory.

[0032] Memory may include non-persistent storage in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash memory. Memory is an example of computer-readable media.

[0033] Computer-readable media, including both permanent and non-permanent, removable and non-removable media, can store information using any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PCM), programmable random access memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information that can be accessed by a computing device.

[0034] The devices referred to in this invention include, but are not limited to, user equipment, network devices, or devices composed of user equipment and network devices integrated through a network. The user equipment includes, but is not limited to, any mobile electronic product capable of human-computer interaction (e.g., via a touchpad), such as smartphones and tablets. These mobile electronic products can use any operating system, such as Android or iOS. The network device includes an electronic device capable of automatically performing numerical calculations and information processing according to pre-set or stored instructions. Its hardware includes, but is not limited to, microprocessors, application-specific integrated circuits (ASICs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and embedded devices. The network device includes, but is not limited to, computers, network hosts, single network servers, multiple network server clusters, or a cloud composed of multiple servers. Here, the cloud consists of a large number of computers or network servers based on cloud computing, where cloud computing is a type of distributed computing, consisting of a virtual supercomputer composed of a group of loosely coupled computer clusters. The network includes, but is not limited to, the Internet, wide area network, metropolitan area network, local area network, VPN network, and wireless ad hoc network. Preferably, the device can also be a program running on the user equipment, network device, or a device formed by integrating user equipment and network device, network device, touch terminal, or network device and touch terminal through a network.

[0035] Of course, those skilled in the art should understand that the above-described devices are merely examples, and other existing or future devices that are applicable to this invention should also be included within the scope of protection of this invention, and are hereby incorporated by reference.

[0036] In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In existing orthognathic surgery methods for final occlusal alignment, the surgical model segmentation and assembly is not only cumbersome and time-consuming, but also suffers from serious logical flaws. The planner must first assemble the posterior bone blocks to establish cusp intercuspal occlusion to stabilize the plaster model, and then bond the anterior bone blocks to the upper and lower jaws respectively. However, the aesthetic improvement effect is concentrated in the anterior region. The surgical model assembly process attaches the positioning of the anterior region to the already established position of the posterior teeth, reversing the order and importance of occlusal alignment, which clearly does not conform to the goals of clinical treatment.

[0038] Secondly, if the jawbone is divided into many sections, it is difficult to fix and observe multiple bone blocks simultaneously, which greatly limits the operation. Plaster models can only replicate the anatomical features of the crown and gingiva. Doctors need to draw the outline of the tooth root on the plaster based on imaging and then cut it to improve clinical feasibility. The error is large. However, surgical model assembly cannot avoid the above problems. At the same time, it is difficult to have a unified standard for verifying the feasibility of terminal occlusion.

[0039] Figure 1 shows a flowchart of the orthognathic digital virtual bite alignment method of the present invention, which includes the following steps:

[0040] Step 1: Obtain a three-dimensional digital model of the patient's oral cavity, which includes the jawbone and dental arch.

[0041] In some embodiments, the oral cavity three-dimensional digital model is formed by registering a radiographic scanning model and an intraoral optical scanning model, wherein the radiographic scanning model is a three-dimensional skull model of the patient obtained by CBCT, including the patient's teeth and jawbone, and the intraoral optical scanning model is a three-dimensional intraoral model of the patient obtained by an intraoral scanning device, including the patient's teeth and soft tissue.

[0042] The three-dimensional skull model and the three-dimensional intraoral model are imported into computer-aided design software, such as ProPlan CMF, to register them. The dental arches in the three-dimensional skull model are then replaced with those in the three-dimensional intraoral model to obtain the three-dimensional digital model of the oral cavity.

[0043] Step 2: Segment the jawbone in the oral cavity 3D digital model to form a segmentation model.

[0044] In some embodiments, the oral cavity three-dimensional digital model obtained in step one is cut using a design and cutting module in computer-aided software, such as the Fort I, BSSRO, maxillary anterior osteotomy, and mandibular anterior subapical osteotomy in ProPlan CMF, thereby obtaining the segmentation model.

[0045] Step 3: Mark the reference position information on the segmentation model and determine the adjustment rules.

[0046] The reference position information includes reference points, reference lines, and reference planes used to define the positions of the jawbone and teeth in the segmentation model; the adjustment rules are based on several reference items and their standard ranges set according to the reference position information.

[0047] Step 4: Piece together the segmented jawbones in the segmentation model until the adjustment rules are met.

[0048] Specifically, it includes the following steps in sequence:

[0049] S1. Establish anterior tooth occlusion;

[0050] S2, Align the mandibular dentition;

[0051] S3. Establish posterior occlusion;

[0052] S4. Align the maxillary dentition;

[0053] S5. Check whether the adjustment rules are met. If not, repeat steps S1 to S4 until the adjustment rules are met.

[0054] Step 5: Perform ABO-OGS scoring on the completed bite model.

[0055] In some embodiments, the ABO-OGS scoring items include alignment, marginal ridge height, buccal-lingual inclination, occlusal relationship, occlusal contact, overbite, and adjacent tooth contact.

[0056] Based on the above-described method for digital virtual occlusion alignment of the orthognathic jaw according to the present invention, the following exemplary example will be used to further illustrate the method.

[0057] First, 3D model data of the patient's jawbone is obtained through CBCT, and then 3D model data of the patient's oral cavity is obtained through intraoral scanning.

[0058] Import the acquired 3D model data into ProPlan CMF 3.0, and register and replace the CT dental data with the intraoral scan data. Specifically, replace the dental data in the CT model with the dental data in the intraoral scan model.

[0059] The design and cutting module in ProPlan CMF 3.0 is used to perform virtual surgical segmentation of the jawbone, including Lesser I, BSSRO, anterior maxillary osteotomy, and subapical anterior mandibular osteotomy. In the embodiments shown in Figures 2 to 6 below, Lesser I and anterior maxillary osteotomy are specifically performed on the maxilla, and BSSRO and subapical anterior mandibular osteotomy are performed on the mandible.

[0060] On the segmented three-dimensional structure, mark the reference points, reference lines, and reference planes required for subsequent interlocking and assembly, and define the reference values ​​and their normal range standards.

[0061] The relative positional relationship of the segmented jawbones is adjusted, and the real-time measurement function of the software is used to ensure that the adjusted positional relationship of the segmented jawbones meets the normal range standard of the reference values ​​defined above, thereby completing the virtual occlusal alignment of the segmented jawbones. The model illustrations of each stage in the alignment process can be seen in Figures 2 to 6, specifically including:

[0062] (1) Assemble the anterior bone blocks of the maxilla and mandible.

[0063] Referring to Figure 2, first assemble the anterior bone blocks of the upper and lower jaws, prioritizing the functional requirements of the aesthetic zone, and establish anterior occlusion. Align the midlines of the upper and lower dentitions, control the anterior overbite to be 2-3mm, ensure that the overlap of the upper and lower incisors does not exceed 1 / 3 of the crown, and that the angles U1-L1 of the upper and lower central incisors are within the normal range of 56°±8.2°. There should be at least one light occlusal contact point in the anterior tooth area.

[0064] In Figure 2, line segment A corresponds to the midline of the upper and lower dentition mentioned above, line segment B corresponds to the dimensions involved in the anterior overbite mentioned above, line segment C corresponds to the dimensions involved in the overbite mentioned above, points D and E correspond to U1 and L1 respectively, the included angle F formed by line segments F1 and F2 corresponds to the upper and lower central incisor angle U1-L1, and point G corresponds to the light occlusal contact point mentioned above.

[0065] (2) Align the mandibular dentition

[0066] Referring to Figure 3, based on step (1), align the anterior and posterior mandibular bone blocks to establish a complete and ideal mandibular dentition. The distance between the anterior and posterior bone blocks should be controlled to be 2-3 mm, the curvature of the Spee curve should be less than or equal to 2 mm, and the mandibular dentition should form a relatively smooth dental arch curve from a top-down view, leveling the first sequence.

[0067] In Figure 3, line segments H and I correspond to the distances between the anterior and posterior bone segments mentioned above. The endpoints of line segments H and I are both highlighted and enlarged, representing the most convex points on the adjacent surfaces of teeth adjacent to the fracture ends of the anterior and posterior bone segments. In this embodiment, specifically, these are the most convex distal point on the distal surface of the mandibular canine and the most convex mesial point on the mesial surface of the mandibular second premolar on the corresponding side (left or right). Curve J corresponds to the Spee curve, and curve K corresponds to the dental arch curve.

[0068] (3) Assemble the upper and lower posterior bone blocks.

[0069] Referring to Figure 4, based on step (2), assemble the posterior bone blocks of the upper and lower jaws to establish a stable posterior occlusion. Achieve Class I molar relationship as much as possible, with intercuspals of the posterior teeth and contact points evenly distributed on both sides of the dentition, with at least one contact point on each side. Ensure proper overbite of the posterior teeth on both sides, and observe the occlusion from bottom to top by adjusting the viewing angle. The buccal cusps of the lower posterior teeth should bite within the central fossa of the upper posterior teeth.

[0070] In Figure 4, line segment L illustrates the aforementioned Class I molar relationship, point M corresponds to the aforementioned contact point, and curve N corresponds to the dimensions involved in the aforementioned posterior overbite.

[0071] (4) Align the maxillary dentition

[0072] Referring to Figure 5, the posterior maxillary bone block not only has a positional relationship with the posterior mandibular bone block, but also has a positional connection with the anterior maxillary bone block. Based on step (3), the anterior and posterior maxillary bone blocks are aligned to establish a complete and ideal maxillary dentition. The factors to be considered are similar to those in step (2). The distance between the anterior and posterior bone blocks needs to be controlled within 2-3 mm. The compensation curve needs to control the vertical distance between the cusp of the maxillary canine and the buccal cusp of the second premolar within 0-3 mm. From a top-down perspective, the maxillary dentition forms a relatively smooth dental arch curve, and the first sequence is leveled.

[0073] In Figure 5, line segments O and P correspond to the distances between the anterior and posterior bone segments mentioned above. The two endpoints of the green line segments O and P are highlighted and enlarged, representing the most convex points on the adjacent surfaces of teeth at the fracture ends of the anterior and posterior bone segments. In this embodiment, specifically, these are the most convex distal point on the distal surface of the maxillary canine and the most convex mesial point on the mesial surface of the maxillary second premolar on the corresponding side (left or right). Curve Q corresponds to the compensation curve, and curve R corresponds to the dental arch curve.

[0074] (5) Calibrate all reference indicators

[0075] Referring to Figure 6, calibrate all the aforementioned parameters, including midline, overbite, overjet, U1-L1 angle between the upper and lower central incisors, anterior-posterior bone block distance, Spee curve, compensation curve, dental arch curve, molar relationship, and contact point. If all requirements are not met, repeat the cycle from step (1) until all parameters meet clinical requirements and final occlusion is obtained.

[0076] After obtaining digital final occlusion through virtual alignment, the American Board of Orthodontic Experts' Objective Rating System (ABO-OGS) is used to score it. A deduction system is implemented according to preset rules and procedures; the fewer the deductions, the better the occlusion alignment.

[0077] The evaluation criteria and process are shown in Figure 7, including the following seven items: alignment, marginal ridge height, buccal-lingual inclination, overbite, occlusal relationship, occlusal contact, and adjacent tooth contact relationship. Points are deducted according to the scoring rules issued by the American Board of Orthodontics, and finally, the ABO score of virtual alignment of terminal occlusion is obtained.

[0078] Based on the above method, the physician can complete the standardized establishment and evaluation of block occlusion through the virtual matching steps and ABO occlusion score.

[0079] The aforementioned method utilizes computer-aided virtual planning to complete the registration of CT 3D data and intraoral scan data, segmentation of the digital 3D model, and virtual final occlusion alignment. With anterior aesthetic zone occlusion alignment as the goal, the entire process is visualized with tooth roots, and various comprehensive indicators are calibrated and verified in real time. This standardizes the final occlusion alignment process in orthognathic surgery, significantly improving diagnostic and treatment efficiency and clinical feasibility, emphasizing the priority of aesthetic function, and compensating for the unavoidable shortcomings of model surgery. The ABO-OGS system is used to evaluate the final occlusion alignment results, which can be used as a guide to obtain more scientific and clinically relevant tooth alignment. Ultimately, this forms a visualized virtual occlusion alignment and evaluation system for orthognathic surgery of dentofacial deformities, promoting the development of digital precision orthognathic and orthodontic combined diagnosis and treatment.

[0080] This embodiment also provides a computer-readable storage medium storing computer code that, when executed, is performed as described in any of the preceding embodiments.

[0081] This embodiment also provides a computer program product that, when executed by a computer device, performs the method described in any of the preceding embodiments.

[0082] This embodiment also provides a computer device, the computer device comprising:

[0083] One or more processors;

[0084] Memory, used to store one or more computer programs;

[0085] When the one or more computer programs are executed by the one or more processors, the one or more processors cause the one or more processors to perform the method as described in any of the preceding methods.

[0086] Figure 8 illustrates an exemplary system that can be used to implement the various embodiments described in this invention.

[0087] As shown in Figure 4, in some embodiments, system 1000 can function as any of the user terminal devices described in each of the embodiments. In some embodiments, system 1000 may include one or more computer-readable media having instructions (e.g., system memory or NVM / storage device 1020) and one or more processors (e.g., one or more processors 1005) coupled to the one or more computer-readable media and configured to execute the instructions to implement the module and thus perform the actions described in this invention.

[0088] In one embodiment, the system control module 1010 may include any suitable interface controller to provide any suitable interface to at least one of the processors 1005 and / or any suitable device or component communicating with the system control module 1010.

[0089] The system control module 1010 may include a memory controller module 1030 to provide an interface to the system memory 1015. The memory controller module 1030 may be a hardware module, a software module, and / or a firmware module.

[0090] System memory 1015 may be used, for example, to load and store data and / or instructions for system 1000. In one embodiment, system memory 1015 may include any suitable volatile memory, such as suitable DRAM. In some embodiments, system memory 1015 may include double data rate type quad synchronous dynamic random access memory (DDR4 SDRAM).

[0091] In one embodiment, the system control module 1010 may include one or more input / output (I / O) controllers to provide interfaces to the NVM / storage device 1020 and (one or more) communication interfaces 1025.

[0092] For example, the NVM / storage device 1020 may be used to store data and / or instructions. The NVM / storage device 1020 may include any suitable non-volatile memory (e.g., flash memory) and / or may include any suitable (one or more) non-volatile storage devices (e.g., one or more hard disk drives (HDDs), one or more optical disc drives (CDs), and / or one or more digital universal optical disc (DVD) drives).

[0093] NVM / storage device 1020 may include storage resources that are physically part of a device on which system 1000 is mounted, or that can be accessed by the device without necessarily being part of the device. For example, NVM / storage device 1020 may be accessed via a network through one or more communication interfaces 1025.

[0094] One or more communication interfaces 1025 may provide the system 1000 with an interface to communicate over one or more networks and / or with any other suitable device. The system 1000 may wirelessly communicate with one or more components of a wireless network in accordance with any of one or more wireless network standards and / or protocols.

[0095] In one embodiment, at least one of the processors 1005 may be logically packaged with one or more controllers of the system control module 1010 (e.g., memory controller module 1030). In one embodiment, at least one of the processors 1005 may be logically packaged with one or more controllers of the system control module 1010 to form a system-in-package (SiP). In one embodiment, at least one of the processors 1005 may be integrated with the logic of one or more controllers of the system control module 1010 on the same die. In one embodiment, at least one of the processors 1005 may be integrated with the logic of one or more controllers of the system control module 1010 on the same die to form a system-on-a-chip (SoC).

[0096] In various embodiments, system 1000 may be, but is not limited to, a server, workstation, desktop computing device, or mobile computing device (e.g., laptop computing device, handheld computing device, tablet computer, netbook, etc.). In various embodiments, system 1000 may have more or fewer components and / or different architectures. For example, in some embodiments, system 1000 includes one or more cameras, a keyboard, a liquid crystal display (LCD) screen (including a touchscreen display), a non-volatile memory port, multiple antennas, a graphics chip, an application-specific integrated circuit (ASIC), and a speaker.

[0097] It should be noted that the present invention can be implemented in software and / or a combination of software and hardware, for example, using an application-specific integrated circuit (ASIC), a general-purpose computer, or any other similar hardware device. In one embodiment, the software program of the present invention can be executed by a processor to implement the steps or functions described above. Similarly, the software program of the present invention (including associated data structures) can be stored in a computer-readable recording medium, such as RAM memory, a magnetic or optical drive, a floppy disk, or similar devices. Furthermore, some steps or functions of the present invention can be implemented in hardware, for example, as circuitry that works with a processor to perform the various steps or functions.

[0098] Furthermore, a portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0099] Communication media include media through which communication signals containing, for example, computer-readable instructions, data structures, program modules, or other data are transmitted from one system to another. Communication media can include guided transmission media (such as cables and wires (e.g., optical fibers, coaxial cables, etc.)) and wireless (unguided transmission) media capable of propagating energy waves, such as sound, electromagnetic, RF, microwave, and infrared. Computer-readable instructions, data structures, program modules, or other data can be embodied as modulated data signals in, for example, wireless media (such as carrier waves or similar mechanisms embodied as part of spread spectrum technology). The term "modulated data signal" refers to a signal whose one or more characteristics are altered or set in a manner that encodes information in the signal. Modulation can be analog, digital, or a hybrid modulation technique.

[0100] By way of example and not limitation, computer-readable storage media may include volatile and non-volatile, removable and non-removable media implemented by any method or technique for storing information such as computer-readable instructions, data structures, program modules or other data. For example, computer-readable storage media include, but are not limited to, volatile memories such as random access memory (RAM, DRAM, SRAM); and non-volatile memories such as flash memory, various read-only memories (ROM, PROM, EPROM, EEPROM), magnetic and ferromagnetic / ferroelectric memories (MRAM, FeRAM); and magnetic and optical storage devices (hard disks, magnetic tapes, CDs, DVDs); or other media now known or hereafter developed capable of storing computer-readable information / data for use by a computer system.

[0101] Hereinafter, an embodiment of the present invention includes an apparatus comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein when the computer program instructions are executed by the processor, the apparatus is triggered to run a method and / or technical solution based on the foregoing embodiments of the present invention.

[0102] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices recited in the apparatus claims may also be implemented by a single unit or device in software or hardware. The terms "first," "second," etc., are used to indicate names and do not indicate any particular order.

Claims

1. A method for digital virtual bite alignment in orthognathic surgery, characterized in that, include: Obtain a three-dimensional digital model of the patient's oral cavity, which includes the jawbone and dentition; The jawbone in the aforementioned three-dimensional digital model of the oral cavity is segmented to form a segmentation model; Reference position information is marked on the segmentation model, and adjustment rules are determined; The segmented jawbones in the segmentation model are pieced together until the adjustment rules are met.

2. The method according to claim 1, characterized in that, The oral cavity three-dimensional digital model is formed by registering a radiographic scanning model and an intraoral optical scanning model.

3. The method according to claim 1, characterized in that, The reference location information includes reference points, reference lines, and reference planes used to define the positions of the jawbone and teeth in the segmentation model.

4. The method according to claim 1, characterized in that, The adjustment rules are based on several reference items and their standard ranges set according to the reference location information.

5. The method according to claim 1, characterized in that, The steps for assembling the segmented jawbones in the segmentation model are as follows: Establish anterior occlusion; Align the lower dentition; Establish posterior occlusion; Align the maxillary dentition.

6. The method according to claim 1, characterized in that, If the adjustment rule is not met after performing the matching step, the matching step is repeated until the adjustment rule is met.

7. The method according to claim 1, characterized in that, The occlusal model after the matching was completed was scored using the ABO-OGS method.

8. The method according to claim 7, characterized in that, The ABO-OGS scoring criteria include alignment, marginal ridge height, buccal-lingual inclination, occlusal relationship, occlusal contact, overbite, and adjacent tooth contact.

9. A device for digital virtual bite alignment in orthognathic surgery, wherein, The device includes: Processor; and A memory configured to store computer-executable instructions, which, when executed, cause the processor to perform the operations of the method according to any one of claims 1 to 8.

10. A computer-readable medium storing instructions that, when executed, cause a system to perform operations according to any one of claims 1 to 8.

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