Orthognathic digital virtual occlusion pairing method and equipment

Abstract

The invention provides a orthognathic digital virtual occlusion pairing method, which comprises the following steps: acquiring an oral cavity three-dimensional digital model of a patient, the oral cavity three-dimensional digital model comprising a jaw bone and a dentition; segmenting a jaw bone in the oral cavity three-dimensional digital model to form a segmented model; calibrating reference position information on the segmentation model, and determining an adjustment rule; and splicing the segmented jaw bones in the segmentation model until the adjustment rule is met.

Description

Technical Field

[0001] The present invention relates to the field of oral medicine, and in particular to a method and device for orthognathic digital virtual occlusion matching. Background Art

[0002] The establishment of the final occlusion after orthognathic surgery is one of the key steps in orthognathic and orthodontic combined treatment. According to statistics, block surgery accounts for more than 45.8% of orthognathic surgery. The manual alignment of the final occlusion takes a long time, has poor accuracy, and is highly dependent on the doctor's experience. At present, the final occlusion alignment method is mainly clinically performed by manually cutting off the plaster model by model surgery, and then repositioning the bone blocks with hot melt adhesive to establish a new occlusal relationship. However, manual alignment has the defects of being time-consuming and labor-intensive, cumbersome, inaccurate positioning, large errors, and easy breakage of the model leading to loss of visual data. At the same time, there is a large gap in the alignment technology level and aesthetic concepts among doctors, and the training cycle of program doctors is long. Experienced doctors can quickly position and correct the bone blocks according to the characteristics of the deformity, but young doctors face more complex cases, such as cases with a large number of blocks. There is often no standard step process to refer to. The block alignment design guided by experience may cause patients to suffer unnecessary additional trauma or fail to obtain the best occlusion. At the same time, the scientificity and clinical feasibility of the final occlusion lack a unified quantitative standard, making it difficult to systematically define the efficacy. Summary of the invention

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

[0004] Acquire a three-dimensional digital model of the patient's oral cavity, wherein the three-dimensional digital model of the oral cavity includes a jaw and a dentition;

[0005] Segmenting the jaws in the three-dimensional digital model of the oral cavity to form a segmentation model;

[0006] Calibrate reference position information on the segmentation model and determine an adjustment rule;

[0007] The jaw blocks in the segmented model are assembled until the adjustment rule is satisfied. Further, the reference price range of each sub-sample set is predicted in a distributed server environment.

[0008] Furthermore, the oral three-dimensional digital model is formed by aligning the radioactive scanning model and the intraoral optical scanning model.

[0009] Furthermore, the reference position information includes reference points, reference lines, and reference planes for defining the positions of the jaw and teeth in the segmentation model.

[0010] Furthermore, the adjustment rule is a number of reference items and their standard ranges set based on the reference position information.

[0011] Furthermore, the steps of aligning the divided jaws in the segmented model are as follows:

[0012] Establish anterior occlusion;

[0013] Align the mandibular dentition;

[0014] Establish posterior occlusion;

[0015] Correct maxillary dentition.

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

[0017] Furthermore, the ABO-OGS score was performed on the completed occlusal model.

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

[0019] The present invention also provides a device for orthognathic digital virtual occlusion matching, the device comprising:

[0020] Processor; and

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

[0022] The present invention also provides a computer readable medium storing instructions, which, when executed, causes a system to perform the operations of the above method.

[0023] The method and device for orthognathic digital virtual occlusion matching of the present invention are applicable to the matching of whole and divided jaws in orthognathic surgery. The digital virtual technology is used to virtually match the final occlusion in four main steps, namely, firstly, the occlusion of the anterior teeth is established, then the mandibular dentition is matched, then the occlusion of the posterior teeth is established, and finally the maxillary dentition is matched. The overall technical route is guided by the occlusion of the anterior teeth of the anterior bone block. Compared with the existing manual matching method through plaster models, the posterior teeth must be established first to stabilize the occlusion. The technical solution of the present invention does not need to rely on the posterior teeth to stabilize the occlusion, which is more in line with the aesthetic function requirements of orthognathic orthodontics. The virtual matching of the present invention can visualize the entire process of three-dimensional reconstruction of tooth roots, avoid osteotomy damage to tooth roots, and ensure clinical feasibility with root matching. The American Board of Orthodontics Objective Grading System (ABO-OGS) is further used to score the effect of virtual final occlusion, thereby improving the consistency of efficacy evaluation. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 1 A schematic diagram showing the process flow of the method for orthognathic digital virtual occlusion matching of the present invention;

[0026] Figures 2 to 6 Schematic diagrams of the model at various stages of the assembly process in one embodiment of the present invention are shown, wherein the arrow lines in the respective figures indicate the partial adjustment directions of the divided jaw bones;

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

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

[0029] The same or similar reference numerals in the drawings represent the same or similar components. DETAILED DESCRIPTION

[0030] The present application is described in further detail below in conjunction with the accompanying drawings.

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

[0032] Memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash memory. Memory is an example of a computer-readable medium.

[0033] Computer readable media include permanent and non-permanent, removable and non-removable media and can store information by any method or technology. The 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 technology, Compact Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0034] The device referred to in the present invention includes but is not limited to user equipment, network equipment, or equipment formed by integrating user equipment and network equipment through a network. The user equipment includes but is not limited to any mobile electronic product that can interact with a user (for example, interact with a user through a touchpad), such as a smart phone, a tablet computer, etc. The mobile electronic product can use any operating system, such as an Android operating system, an iOS operating system, etc. Among them, the network device includes an electronic device that can automatically perform numerical calculations and information processing according to pre-set or stored instructions, and its hardware includes but is not limited to a microprocessor, an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a programmable logic device (Programmable Logic Device, PLD), a field programmable gate array (Field Programmable Gate Array, FPGA), a digital signal processor (Digital Signal Processor, DSP), an embedded device, etc. The network device includes but is not limited to a computer, a network host, a single network server, a plurality of network server sets or a cloud composed of a plurality of servers; here, the cloud is composed of a large number of computers or network servers based on cloud computing (Cloud Computing), wherein cloud computing is a kind of distributed computing, a virtual supercomputer composed of a group of loosely coupled computer sets. The network includes but is not limited to the Internet, a wide area network, a metropolitan area network, a local area network, a VPN network, a wireless ad hoc network, etc. Preferably, the device may also be a program running on the user device, the network device, or a device formed by integrating the user device and the network device, the network device, the touch terminal, or the network device and the touch terminal through a network.

[0035] Of course, those skilled in the art should understand that the above-mentioned devices are only examples, and other existing or future devices that are applicable to the present invention should also be included in the scope of protection of the present invention and are included here by reference.

[0036] In the description of the embodiments of the present invention, “plurality” means two or more, unless otherwise clearly and specifically defined.

[0037] In the existing orthognathic surgery final occlusion matching method, the model surgery segmentation matching is not only cumbersome, time-consuming and labor-intensive, but also has serious logical flaws. The plan maker needs to match the posterior bone blocks first, establish the staggered occlusion of the posterior cusps to stabilize the plaster model, and then bond the anterior bone blocks to the upper and lower jaws respectively. However, the treatment effect of improving aesthetics is concentrated in the anterior area. The model surgery matching step makes the positioning of the anterior area dependent on the established position of the posterior teeth, and the order and importance of the occlusal matching of the dentition are reversed, which obviously does not meet the goal of clinical treatment.

[0038] Secondly, if the jaw is divided into many pieces, it is difficult to fix and observe and adjust multiple bone pieces at the same time, and the operation is greatly restricted. The plaster model can only reproduce the anatomical features of the crown and gums. The doctor needs to draw the root contour on the plaster according to the imaging and then cut it to improve the clinical feasibility. The error is large, but it is difficult to avoid the above problems in the surgical matching of the model. At the same time, it is difficult to have a unified standard for the verification of the feasibility of the terminal occlusion.

[0039] Figure 1 The flowchart of the method for orthognathic digital virtual occlusion matching of the present invention is shown, which includes the following steps:

[0040] Step 1: Obtain a three-dimensional digital model of the patient's oral cavity, wherein the three-dimensional digital model of the oral cavity includes the jaw and dentition.

[0041] In some embodiments, the three-dimensional digital model of the oral cavity is formed by aligning a radioactive scanning model and an intraoral optical scanning model, wherein the radioactive scanning model is a three-dimensional skull model of the patient obtained by CBCT, including the patient's teeth and jaws, 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 ProPlanCMF, to align the two, and the teeth in the three-dimensional skull model are replaced with the teeth in the three-dimensional intraoral model, so as to obtain the three-dimensional digital model of the oral cavity.

[0043] Step 2: segment the jaws in the three-dimensional digital model of the oral cavity to form a segmentation model.

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

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

[0046] The reference position information includes reference points, reference lines, and reference planes for defining the positions of the jaw and teeth in the segmentation model; and the adjustment rules are a number of reference items and their standard ranges set based on the reference position information.

[0047] Step 4: Pair the jaw blocks in the segmented model until the adjustment rules are met.

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

[0049] S1. Establish anterior 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 occlusal model.

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

[0056] Based on the above-mentioned method of orthognathic digital virtual occlusion matching of the present invention, the above-mentioned method is further explained below through an exemplary example.

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

[0058] The acquired 3D model data is imported into ProPlan CMF 3.0, and the CT dentition data is registered and replaced with the oral scan data. Specifically, the dentition in the CT model is replaced with the dentition in the oral scan model.

[0059] The design cutting module in ProPlan CMF 3.0 was used to perform virtual surgical segmentation of the jaw, such as Lefort I, BSSRO, maxillary anterior osteotomy, and mandibular anterior subapical osteotomy. Figures 2 to 6 In the illustrated embodiment, Lefort I and anterior maxillary osteotomy are performed on the maxilla, and BSSRO and anterior mandibular subapical osteotomy are performed on the mandible.

[0060] The reference points, reference lines, and reference planes required for subsequent occlusal alignment are calibrated on the segmented three-dimensional structure, and the reference values ​​and their normal range standards are defined.

[0061] Adjust the relative position of the jaw blocks, and use the real-time measurement function of the software to make the adjusted position of the jaw blocks meet the normal range standard of the reference value defined above, so as to complete the virtual occlusion of the jaw blocks. The model diagrams of each stage in the process of occlusion can be referred to Figures 2 to 6 As shown, specifically including:

[0062] (1) Matching the anterior bone blocks of the upper and lower jaws

[0063] refer to Figure 2 First, align the anterior bone blocks of the upper and lower jaws to meet the functional requirements of the aesthetic area and establish the anterior occlusion. Align the midline of the upper and lower dentition, control the anterior tooth coverage to 2-3mm, and ensure that the overlap of the upper and lower incisors does not exceed 1 / 3 of the crown. The upper and lower central incisor angles U1-L1 are within the normal range of 56°±8.2°, and there is at least one light bite contact point in the anterior area.

[0064] Figure 2 In the figure, the green line segment A corresponds to the midline of the upper and lower dentition, the green line segment B corresponds to the dimensions involved in the above-mentioned anterior tooth coverage, the orange line segment C corresponds to the dimensions involved in the above-mentioned overbite, the red points D and E correspond to U1 and L1 respectively, the angle F formed by the blue lines corresponds to the upper and lower central incisor angle U1-L1, and the brown point G corresponds to the above-mentioned light occlusal contact point.

[0065] (2) Alignment of mandibular dentition

[0066] refer to Figure 3 On the basis of step (1), the mandibular anterior and posterior bone blocks are assembled 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 when viewed from above, and the first sequence should be leveled.

[0067] Figure 3 In the figure, the green line segments H and I correspond to the distance between the front and rear bone blocks, and the green line segments H and I are both shown as line segments connecting two red points, which are the most convex points of the adjacent surfaces of the adjacent teeth at the ends of the front and rear bone blocks, and in this embodiment, they are specifically the most convex point of the distal surface of the mandibular canine on the corresponding side (left or right) of the mandible and the most convex point of the mesial surface of the mandibular second premolar. The red curve J corresponds to the Spee curve, and the orange curve K corresponds to the dental arch curve.

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

[0069] refer to Figure 4 , on the basis of step (2), the posterior bone blocks of the upper and lower jaws are assembled to establish a stable posterior occlusion. The molar Class I relationship is achieved as much as possible, the posterior tooth cusps are staggered, and the contact points are evenly distributed in the left and right dentitions, with at least one contact point on each side. The bilateral posterior teeth are appropriately covered, and the angle of view is adjusted to observe the occlusion from bottom to top, and the buccal cusps of the mandibular posterior teeth bite within the central fossa of the upper posterior teeth.

[0070] Figure 4 In the figure, the red line segment L illustrates the above-mentioned Class I relationship of the molars, the brown point M corresponds to the above-mentioned contact point, and the blue curve N corresponds to the dimensions involved in the above-mentioned posterior tooth coverage.

[0071] (4) Alignment of maxillary dentition

[0072] refer to Figure 5 The maxillary posterior bone block not only has a positional relationship with the mandibular posterior bone block, but also has a positional relationship with the maxillary anterior bone block. On the basis of step (3), the maxillary anterior and posterior bone blocks are assembled 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 to 3 mm. The compensation curve needs to control the vertical distance between the maxillary canine cusp and the second premolar buccal cusp within 0 to 3 mm. The maxillary dentition forms a relatively smooth dental arch curve from a top-down perspective, and the first sequence is flattened.

[0073] Figure 5 In the figure, the green line segments O and P correspond to the distance between the front and rear bone blocks mentioned above. The green line segments O and P are both shown as line segments connecting two red points. The two red points are the most convex points of the adjacent surfaces of the adjacent teeth at the ends of the front and rear bone blocks. In this embodiment, they are specifically the most convex point of the distal surface of the maxillary canine on the corresponding side (left or right) of the maxillary and the most convex point of the mesial surface of the maxillary second premolar. The red curve Q corresponds to the compensation curve, and the orange curve R corresponds to the dental arch curve.

[0074] (5) Calibrate all reference indicators

[0075] refer to Figure 6 , calibrate all the above-mentioned indicators, including midline, overbite, overjet, upper and lower central incisor angles U1-L1, anterior and posterior bone distance, Spee curve, compensation curve, dental arch curve, molar relationship, and contact point. If all requirements are not met, start from step (1) and cycle until all indicators meet clinical requirements and obtain the final occlusion.

[0076] After the final digital occlusion is obtained through virtual alignment, it is scored using the American Board of Orthodontic Specialists Objective Grading System (ABO-OGS). A deduction system is implemented according to the preset rules and procedures. The fewer the deductions, the better the occlusal alignment effect.

[0077] The judging criteria and process are as follows: Figure 7As shown, it includes the following seven items: alignment, marginal ridge height, buccolingual inclination, overjet, occlusal relationship, occlusal contact, and adjacent tooth contact relationship. Points are deducted according to the scoring criteria published by the American Certification Board of Orthodontics, and finally the ABO score of the virtual final occlusion is obtained.

[0078] According to the above method, the doctor can complete the standardized establishment and evaluation of block occlusion through the above virtual matching steps and ABO occlusion scoring.

[0079] The above method uses computer-aided technology for virtual planning, completes the registration of CT three-dimensional data and oral scan data, the segmentation of digital three-dimensional models and the virtual final occlusion alignment. It is goal-oriented to occlude the anterior aesthetic zone, visualizes the tooth root alignment throughout the process, and calibrates and checks various comprehensive indicators in real time to standardize the process of final occlusion alignment in orthognathic surgery, which greatly improves the diagnosis and treatment efficiency and clinical feasibility, emphasizes the priority of aesthetic function, and makes up for the inevitable defects of model surgery. The ABO-OGS system is used to evaluate the alignment results of the final occlusion, and it can be used as a guide to obtain a more scientific and clinically practical tooth arrangement. Finally, a set of visualization virtual occlusion alignment and evaluation system for orthognathic surgery of maxillofacial deformities is formed to promote the development of digital precision orthognathic and orthodontic combined diagnosis and treatment.

[0080] This embodiment further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer code. When the computer code is executed, the method described in any of the preceding items is executed.

[0081] This embodiment further provides a computer program product. When the computer program product is executed by a computer device, the method described in any of the preceding items is executed.

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

[0083] one or more processors;

[0084] a memory for storing 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 are caused to implement the method as described in any of the preceding items.

[0086] Figure 8 An exemplary system is shown that can be used to implement the various embodiments described herein.

[0087] like Figure 4As shown, in some embodiments, the system 1000 can be used as any user terminal device in each of the embodiments. In some embodiments, the system 1000 may include one or more computer-readable media (e.g., system memory or NVM / storage device 1020) having instructions 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 instructions to implement modules to perform the actions described in the present invention.

[0088] For one embodiment, the system control module 1010 may include any suitable interface controller to provide any suitable interface to at least one of the processor(s) 1005 and / or any suitable device or component in communication 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] The system memory 1015 may be used, for example, to load and store data and / or instructions for the system 1000. For one embodiment, the system memory 1015 may include any suitable volatile memory, such as a suitable DRAM. In some embodiments, the system memory 1015 may include double data rate type four synchronous dynamic random access memory (DDR4 SDRAM).

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

[0092] For example, NVM / storage device 1020 may be used to store data and / or instructions. NVM / storage device 1020 may include any suitable non-volatile memory (e.g., flash memory) and / or may include any suitable non-volatile storage device(s) (e.g., one or more hard disk drives (HDDs), one or more compact disk (CD) drives, and / or one or more digital versatile disk (DVD) drives).

[0093] NVM / storage device 1020 may include storage resources that are physically part of the device on which system 1000 is installed, or it may be accessible to the device without being part of the device. For example, NVM / storage device 1020 may be accessed via communication interface(s) 1025 over a network.

[0094] Communication interface(s) 1025 may provide an interface for system 1000 to communicate over one or more networks and / or with any other suitable devices. 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] For one embodiment, at least one of the processor(s) 1005 may be packaged together with the logic of one or more controllers (e.g., memory controller module 1030) of the system control module 1010. For one embodiment, at least one of the processor(s) 1005 may be packaged together with the logic of one or more controllers of the system control module 1010 to form a system-in-package (SiP). For one embodiment, at least one of the processor(s) 1005 may be integrated on the same die with the logic of one or more controllers of the system control module 1010. For one embodiment, at least one of the processor(s) 1005 may be integrated on the same die with the logic of one or more controllers of the system control module 1010 to form a system on chip (SoC).

[0096] In various embodiments, the system 1000 may be, but is not limited to: a server, a workstation, a desktop computing device, or a mobile computing device (e.g., a laptop computing device, a handheld computing device, a tablet computer, a netbook, etc.). In various embodiments, the system 1000 may have more or fewer components and / or a different architecture. For example, in some embodiments, the system 1000 includes one or more cameras, a keyboard, a liquid crystal display (LCD) screen (including a touch screen 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, can be implemented 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 related data structures) can be stored in a computer readable recording medium, for example, a RAM memory, a magnetic or optical drive or a floppy disk and the like. In addition, some steps or functions of the present invention can be implemented using hardware, for example, as a circuit that cooperates with a processor to perform each step or function.

[0098] In addition, a part of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the existence of computer program instructions in computer-readable media includes, but is not limited to, source files, executable files, installation package files, etc., and accordingly, the way in which computer program instructions are executed by a computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium accessible to the computer.

[0099] Communication media include media by 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 may include guided transmission media such as cables and wires (e.g., fiber optic, coaxial, etc.) and wireless (unguided transmission) media that can propagate energy waves, such as acoustic, electromagnetic, RF, microwave, and infrared. Computer readable instructions, data structures, program modules, or other data may be embodied as a modulated data signal in, for example, a wireless medium such as a carrier wave or similar mechanism such as embodied as part of spread spectrum technology. The term "modulated data signal" refers to a signal whose one or more characteristics are changed or set in such a manner as to encode information in the signal. Modulation may be analog, digital, or a hybrid modulation technique.

[0100] By way of example and not limitation, computer-readable storage media may include volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of 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 memory, such as random access memory (RAM, DRAM, SRAM); and non-volatile memory, 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 later developed that can store computer-readable information / data for use by a computer system.

[0101] Here, according to one embodiment of the present invention, a device is included, which includes 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 device is triggered to run the methods and / or technical solutions based on the aforementioned multiple embodiments of the present invention.

[0102] It is obvious 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 present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the device claim can also be implemented by one unit or device through software or hardware. The words first, second, etc. are used to indicate names, and do not indicate any particular order.

Claims

1. A method for orthognathic digital virtual occlusion matching, characterized in that: include: Acquire a three-dimensional digital model of the patient's oral cavity, wherein the three-dimensional digital model of the oral cavity includes a jaw and a dentition; Segmenting the jaws in the three-dimensional digital model of the oral cavity to form a segmentation model; Calibrate reference position information on the segmentation model and determine an adjustment rule; The jaw blocks in the segmented model are pieced together until the adjustment rule is satisfied.

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

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

4. The method according to claim 1, characterized in that: The adjustment rule is a number of reference items and their standard ranges set based on the reference position information.

5. The method according to claim 1, characterized in that The steps for aligning the divided jaws in the segmented model are as follows: Establish anterior occlusion; Align the mandibular dentition; Establish posterior occlusion; Correct maxillary dentition.

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

7. The method according to claim 1, characterized in that The ABO-OGS score was performed on the completed occlusal model.

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

9. A device for orthognathic digital virtual occlusion matching, wherein: The device comprises: Processor; and A memory arranged 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 which, when executed, cause a system to perform the operations of the method according to any one of claims 1 to 8.

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