CN114343906B - Method and device for acquiring occlusion vertical distance, medium and electronic equipment - Google Patents
Method and device for acquiring occlusion vertical distance, medium and electronic equipment Download PDFInfo
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Abstract
The invention provides a method, a device, a medium and electronic equipment for acquiring an occlusion vertical distance. The method comprises the following steps: acquiring a dentition scanning result of the target object when the target object is at a preset occlusion position; acquiring an oral cavity image of the target object when the target object is in a preset occlusion position, wherein the oral cavity image comprises temporomandibular joints, infrabony orbitals and complete dentition of the target object; acquiring a maxilla and a mandible three-dimensional model of the target object according to the oral cavity image; importing the dentition scanning result and the maxilla and mandible three-dimensional model into an electronic face arch system; acquiring a mandible movement track of the target object by using the electronic facebow system in the process of carrying out preset mandible movement on the target object; and acquiring a target jaw position and a bite vertical distance according to the mandible movement track of the target object. The method can quickly and accurately acquire the occlusion vertical distance of the target object.
Description
Technical Field
The invention relates to the technical field of digital oral cavities, in particular to a method, a device, a medium and electronic equipment for acquiring occlusion vertical distance.
Background
Oral health is closely related to the quality of life of people. In oral clinic, the vertical occlusion distance of a patient is often reduced due to heavy abrasion of teeth, loss of dentition or missing dentition, which affects the appearance and reduces the life quality of the patient. This situation is often addressed in the prior art by means of bite reconstruction to achieve a combination of aesthetic and functional appeal to the patient. However, the prior art methods of increasing the vertical distance of the patient's bite are typically empirical to manually position the mandible and the condyles, which requires a great deal of experience and a high degree of technical sensitivity of the medical personnel, which is difficult to universally teach and popularize.
In recent years, with the progress of computer technology and the development of technology, digital technology has been gradually applied to the fields of oral cavity restoration and the like. It has become feasible to use Computer aided design/Computer aided manufacturing (CAD/CAM) as a support platform to integrate extraoral facial scan (EOS), intraoral scan (IOS) and Cone Beam Computed Tomography (CBCT) data to create virtual dental patients and to determine the mandibular position and vertical bite distance digitally.
Disclosure of Invention
An object of the present invention is to provide a method, an apparatus, a medium, and an electronic device for acquiring a vertical occlusion distance, which are used to solve the problem that it is difficult to quickly and accurately acquire a vertical occlusion distance of a patient in the prior art.
To achieve the above and other related objects, a first aspect of the present invention provides a method for acquiring a vertical occlusion distance, including: acquiring a dentition scanning result of the target object when the target object is at a preset occlusion position; acquiring an oral cavity image of the target object when the target object is in a preset occlusion position, wherein the oral cavity image comprises temporomandibular joints, inferior bony orbitals and complete dentition of the target object; acquiring a maxilla and mandible three-dimensional model of the target object according to the oral cavity image; importing the dentition scanning result and the maxilla and mandible three-dimensional model into an electronic facebow system; acquiring a mandible movement track of the target object by using the electronic facebow system in the process of carrying out preset mandible movement on the target object; and acquiring a target jaw position and a bite vertical distance according to the mandible movement track of the target object.
In an embodiment of the first aspect, the predetermined occlusal position is a maximum cusp dislocation.
In an embodiment of the first aspect, the method for obtaining the occlusion vertical distance further includes: and registering the dentition scanning result and the maxilla three-dimensional model based on a tooth calibration point.
In an embodiment of the first aspect, the method for obtaining a three-dimensional model of the maxilla of the target object based on the mouth image comprises: processing temporomandibular joint gaps in the oral cavity image according to the gray threshold range of bones and teeth so as to separate temporomandibular joint fossae from condyles and obtain complete maxilla; and performing three-dimensional reconstruction according to the complete maxilla and the mandible to obtain the maxilla and the mandible three-dimensional model.
In an embodiment of the first aspect, the method for obtaining the occlusion vertical distance further includes: replacing dentition in the three-dimensional model of the maxilla with the dentition scan result.
In an embodiment of the first aspect, the method for obtaining the occlusion vertical distance further includes: marking the mandibular jaw occlusal surfaces and the real occlusal surfaces of the target object in the electronic facial arch system based on preset dental occlusal surface marking points to obtain facial hard tissue registration results of the target object.
In an embodiment of the first aspect, the preset mandibular movement includes small jaw movement, the mandibular movement trajectory includes a plurality of frames of facial images, and the implementation method for obtaining the target jaw position includes: displaying the face image corresponding to the small jaw opening movement frame by frame; acquiring a corresponding frame of face image as a target image in response to the received instruction; and acquiring a lower jaw position in the target image as the target jaw position.
A second aspect of the present invention provides a device for acquiring a vertical occlusal distance, including: the scanning result acquisition module is used for acquiring the dentition scanning result of the target object when the target object is at a preset occlusion position; the oral cavity image acquisition module is used for acquiring an oral cavity image of the target object when the target object is in a preset occlusion position, wherein the oral cavity image comprises a temporomandibular joint, an infrabony orbit border and a complete dentition of the target object; the three-dimensional model acquisition module is used for acquiring a maxilla and mandible three-dimensional model of the target object according to the oral cavity image; the data import module is used for importing the dentition scanning result and the maxilla and mandible three-dimensional model into an electronic face arch system; the mandible track acquisition module is used for acquiring a mandible movement track of the target object by using the electronic facebow system in the process that the target object repeatedly performs a plurality of times of preset mandible movements; and the vertical distance acquisition module is used for acquiring a target jaw position and a bite vertical distance according to the mandible movement track of the target object.
A third aspect of the present invention provides a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the method for acquiring a perpendicular occlusion distance according to any one of the first aspect of the present invention.
A fourth aspect of the present invention provides an electronic apparatus, comprising: a memory storing a computer program; and the processor is in communication connection with the memory and executes the method for acquiring the occlusion vertical distance in the first aspect of the invention when the computer program is called.
As described above, the method for obtaining the occlusion vertical distance described in one or more embodiments of the present invention has the following advantageous effects:
the method for acquiring the vertical occlusion distance can automatically acquire the mandibular movement locus of the target object through the electronic face bow system, and further can acquire the target jaw position and the vertical occlusion distance. The method is independent of the experience of medical staff, and has the advantages of rapidness, accuracy, easiness in popularization and the like.
Drawings
Fig. 1 is a flow chart illustrating a method for obtaining the occlusion vertical distance according to an embodiment of the present invention.
Fig. 2 is a detailed flowchart of step S13 of the method for obtaining the occlusion vertical distance according to an embodiment of the present invention.
Fig. 3 is a detailed flowchart of step S16 of the method for obtaining the occlusion vertical distance according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a device for acquiring a vertical occlusion distance according to an embodiment of the invention.
Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Description of the element reference numerals
4. Occlusion vertical distance acquisition device
41. Scanning result acquisition module
42. Oral cavity image acquisition module
43. Three-dimensional model acquisition module
44. Data import module
45. Mandibular trajectory acquisition module
46. Vertical distance acquisition module
500. Electronic device
510. Memory device
520. Processor with a memory for storing a plurality of data
530. Display device
S11 to S16
S131 to S132 steps
S161 to S163
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation, and the type, number and proportion of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated. Moreover, in this document, relational terms such as "first," "second," and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Referring to fig. 1, in an embodiment of the present invention, a method for acquiring a vertical occlusion distance is provided, and the method for acquiring a vertical occlusion distance includes the following steps S11 to S16.
And S11, acquiring a dentition scanning result of the target object when the target object is at a preset occlusion position. The target object is for example a patient to be examined. The dentition scanning result can be obtained by carrying out oral cavity scanning on the target object by an intraoral scanning device. In practical application, medical staff can retract the lips of the target object through the mouth gag, and scan and record the dentition of the upper jaw, the lower jaw and the occlusion relation of the target object by using an intraoral scanning device, so as to obtain the dentition scanning result.
Optionally, the preset bite position is a maximum cusp staggering position.
Optionally, the dentition scan results are in STL (stereolithography) format for subsequent processing of the dentition scan results.
Step S12, acquiring an oral cavity image of the target object when the target object is in a preset occlusion position, wherein the oral cavity image comprises temporomandibular joints, bony infraorbital margins and complete dentition of the target object.
Optionally, the oral cavity image is a CBCT image. Further, the oral cavity image may be a field of view (FOV) CBCT image encompassing the temporomandibular joint, the infrabony orbit, and the complete dentition.
Optionally, in this embodiment, a CBCT scanning device may be used to obtain a large-field CBCT image including mandibular condyle, bony external auditory canal, bony infraorbital margin and complete dentition at the time of maximum cusp dislocation of the target object as the oral cavity image.
Optionally, the oral cavity image is a DICOM (Digital Imaging and Communications in Medicine) image for subsequent processing of the oral cavity image.
And S13, acquiring a maxilla and mandible three-dimensional model of the target object according to the oral cavity image.
And step S14, importing the dentition scanning result and the maxilla and mandible three-dimensional model into an electronic face arch system, wherein the electronic face arch system is a preset optical sensing type electronic face arch system.
And S15, acquiring a mandible movement track of the target object by using the electronic facebow system in the process of presetting mandible movement of the target object. For example, the medical staff may request the target object to perform the repeated preset mandibular movement for a plurality of times, and during the repeated preset mandibular movement for the target object, the present embodiment may acquire the mandibular movement trajectory of the target object using the electronic facebow system. The preset mandibular movement includes, for example, mandibular protrusion movement, lateral movement, opening and closing movement, small jaw opening movement, tapping movement, and the like.
Alternatively, the target subject may perform the preset mandibular movement after the bilateral posterior bites on the rolls for a period of time to achieve facial muscle programming.
And S16, acquiring a target jaw position and a bite vertical distance according to the lower jaw movement track of the target object.
As can be seen from the above description, the method for acquiring a vertical occlusion distance according to this embodiment can acquire a mandibular movement trajectory of a target object through an electronic facial arch system, and further can acquire a target jaw position and a vertical occlusion distance. The method is independent of the experience of medical staff, and has the advantages of rapidness, accuracy, easiness in popularization and the like.
Referring to fig. 2, in an embodiment of the present invention, the method for obtaining a three-dimensional model of a maxilla and a mandible of a target object according to an oral cavity image includes the following steps S131 and S132.
Step S131, processing temporomandibular joint space in the oral cavity image according to the gray threshold range of bones and teeth so that temporomandibular joint fossa and the condyles are separated to obtain complete maxilla and mandible. Specifically, the gray threshold values of bones and teeth in the oral cavity image are different, so that the temporomandibular joint space can be cleaned according to the gray threshold value range of the bones and the teeth. The gray threshold range of the bones and the teeth can be a preset value and can be manually specified according to actual requirements.
And S132, performing three-dimensional reconstruction according to the complete maxilla and mandible to obtain the maxilla and mandible three-dimensional model. For example, the mouth image may be imported into corresponding three-dimensional reconstruction software to obtain the three-dimensional model of the maxilla, such as a surface three-dimensional model.
Alternatively, the three-dimensional models of the maxilla and mandible may be derived in a file in STL format.
Optionally, the method for obtaining the vertical occlusion distance further includes: and registering the dentition scanning result and the upper and lower jaw three-dimensional models based on the dental calibration points, wherein the electronic facebow system comprises the registered jaw lower jaw dentition occlusal surfaces. Specifically, the tooth index point may be a point where the dentition scanning result and the plurality of positions in the three-dimensional model of the maxilla and mandible correspond to the same, for example, three points of a mesial incisor angle of the right maxillary middle incisor, a mesial lingual cusp of the upper right first molar and a distal lingual sulcus of the upper left first molar may be selected as the tooth index point in this embodiment. It should be noted that the tooth calibration point can be selected according to the actual dentition of the target object, which is not limited by the invention.
Optionally, in this embodiment, an implementation method for registering the scan result of the dentition and the three-dimensional model of the maxilla based on the tooth calibration point includes: marking the tooth marking points in the dentition scanning result and the maxilla and mandible three-dimensional models respectively, and registering the dentition scanning result and the maxilla and mandible three-dimensional models based on a marking point matching algorithm to obtain a registered oral cavity scanning result. In this way, the accuracy of dentition in the three-dimensional model of the maxilla and mandible can be optimized. Preferably, a final matching result with a matching error less than or equal to 0.05mm may be selected as the registered oral cavity scanning result in the above registration process.
Optionally, the method for acquiring the vertical occlusion distance may further include: replacing dentition in the three-dimensional model of the maxilla with the dentition scanning result so that the dentition scanning result matches the three-dimensional model of the maxilla.
Optionally, after the dental scan result and the maxilla three-dimensional model are introduced into the electronic facial arch system, the method for obtaining the vertical occlusion distance further includes: marking the jaw and jaw dentition occlusal surfaces in the electronic facial arch system and the real dentition occlusal surface of the target object based on preset tooth occlusal surface calibration points to obtain a facial hard tissue registration result of the target object. Wherein, the real dentition occlusal surface of the target object refers to the dentition occlusal surface acquired in step S11.
Alternatively, in this embodiment, a corresponding point may be selected as the tooth calibration point in each of the left and right near and far sides of the mandibular dentition occlusal surface, that is, a point having the same position in the mouth of the target object may be selected as the tooth calibration point in each of the left and right near and far sides of the mandibular dentition occlusal surface after the registration in the electronic facial arch system. For example, four points of the mesial buccal apex of the left mandibular second molar, the buccal apex of the left mandibular first molar, the buccal apex of the right mandibular first molar and the mesial buccal apex of the right mandibular second molar may be selected as the tooth calibration points, but the invention is not limited thereto, and the tooth calibration points may be selected according to the actual condition of the dentition of the target object in practical application.
In an embodiment of the present invention, the method for obtaining the occlusion vertical distance may further include: and fixing optical positioning and tracking devices matched with the electronic face bow system on the head and the lower jaw dentition buccal side of the target object, and clicking the dentition occlusal surface calibration points and the two lateral condyle points of the target object by using an optical signal receiving pen to obtain a virtual patient jaw face hard tissue registration result. In fixing the optical positioning and tracking device, it is necessary to use a photo-curing fluid resin bonding fixation to receive and record the mandibular movement trajectory while ensuring that the placement position does not affect the bite and cause bite interference.
Optionally, the mandibular movement trajectory of the target object includes a dynamic maxillofacial hard tissue relationship result.
In an embodiment of the present invention, in the process of acquiring the mandibular movement track of the target object by using the electronic facial arch system, the electronic facial arch system may be used to analyze the occlusal condition of the target object, and observe the shift track route and range during the motion of the condyles from the sagittal plane, the coronal plane and the horizontal plane, and quickly analyze the track characteristics and the repetition condition thereof, thereby excluding some patients who are not suitable for occlusal reconstruction.
In an embodiment of the invention, the predetermined mandibular movement includes small jaw opening movement, and the mandibular movement trajectory includes a plurality of frames of facial images. Referring to fig. 3, the implementation method for obtaining the target jaw position in the present embodiment includes the following steps S161 to S163.
Step S161, displaying the face image corresponding to the small jaw movement frame by frame.
In step S162, a corresponding one-frame face image is acquired as a target image in response to the received instruction. Wherein, the instruction is input by medical staff through equipment such as a mouse, a keyboard and the like.
Step S163, acquiring a lower jaw position in the target image as the target jaw position.
Based on the above steps S161 to S163, the medical staff can observe the vertical distance of the front tooth area and the back tooth area and the positional relationship of the condyloid process in the glenoid fossa according to the displayed content, so as to input corresponding instructions to select the jaw position in a frame of face image as a target jaw position, so as to consider stable temporomandibular joint relationship, the aesthetics of the front teeth and the sufficient repair space of the back teeth.
Optionally, the method for acquiring the vertical occlusion distance may further include: deriving a tooth scan model with specific coordinates in an STL format, deriving the mandibular movement track in an xml format, and obtaining a jaw position relation result after the final virtual lifting of the vertical distance between the jaws of the patient, wherein the result can be butted with CAD-CAM software to manufacture a temporary prosthesis and a final prosthesis.
Based on the description of the method for acquiring the occlusion vertical distance, the invention also provides a device for acquiring the occlusion vertical distance. Referring to fig. 4, in an embodiment of the present invention, the apparatus 4 for acquiring vertical occlusal distance includes a scanning result acquiring module 41, an oral cavity image acquiring module 42, a three-dimensional model acquiring module 43, a data importing module 44, a mandibular track acquiring module 45 and a vertical distance acquiring module 46.
The scanning result obtaining module 41 is configured to obtain a dentition scanning result of the target object when the target object is in a preset occlusion position.
The oral cavity image acquiring module 42 is configured to acquire an oral cavity image of the target object when the target object is in a preset occlusion position, where the oral cavity image includes a temporomandibular joint, an infrabony orbital margin, and a complete dentition of the target object.
The three-dimensional model obtaining module 43 is connected to the oral cavity image obtaining module 42, and is configured to obtain a three-dimensional model of the maxilla and the mandible of the target object according to the oral cavity image.
The data importing module 44 is connected to the scanning result obtaining module 41 and the three-dimensional model obtaining module 43, and is configured to import the dental scan result and the maxilla three-dimensional model into an electronic facebow system.
The mandibular track acquisition module 44 is connected to the electronic facebow system and is configured to acquire the mandibular track of the target object using the electronic facebow system during the repeated multiple times of pre-determined mandibular movement of the target object.
The vertical distance acquisition module 45 is connected to the mandibular trajectory acquisition module 44 and is configured to acquire a target jaw position and a vertical occlusion distance according to the mandibular movement trajectory of the target object.
It should be noted that, each module in the acquiring apparatus 4 for the vertical occlusion distance according to this embodiment corresponds to step S11 to step S16 in the acquiring method for the vertical occlusion distance shown in fig. 1, and the improvement or modification of the acquiring method for the vertical occlusion distance is applicable to the acquiring apparatus 4 for the vertical occlusion distance according to this embodiment. For the sake of saving the description space, the description of the device 4 for obtaining the vertical occlusion distance is not repeated here. Further, in some embodiments, the electronic facebow system may be contained within the bite vertical distance acquisition device 4. In other embodiments, the electronic facebow system can also be disposed outside of the perpendicular-to-bite acquisition device 4 and communicatively coupled to the perpendicular-to-bite acquisition device 4.
Based on the above description of the method for acquiring the occlusion vertical distance, the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method for acquiring the occlusion vertical distance shown in fig. 1.
Based on the description of the method for acquiring the occlusion vertical distance, the invention further provides electronic equipment. Specifically, referring to fig. 5, in an embodiment of the invention, the electronic device 500 includes a memory 510 and a processor 520. The memory 510 stores a computer program, and the processor 520 is connected to the memory 510 in communication, and executes the method for acquiring the occlusion vertical distance shown in fig. 1 when the computer program is called.
Optionally, the electronic device 500 may further include a display 530, and the display 530 is communicatively connected to the memory 510 and the processor 520, and is configured to display a GUI interactive interface related to the method for obtaining the vertical bite distance.
The protection scope of the method for acquiring the occlusion vertical distance in the present invention is not limited to the execution sequence of the steps listed in the embodiment, and all the solutions implemented by adding, subtracting, and replacing the steps in the prior art according to the principles of the present invention are included in the protection scope of the present invention.
The invention also provides a device for acquiring the occlusion vertical distance, which can implement the method for acquiring the occlusion vertical distance described in the invention, but the device for acquiring the occlusion vertical distance described in the invention includes, but is not limited to, the structure of the device for acquiring the occlusion vertical distance described in the embodiment, and all structural modifications and substitutions in the prior art made according to the principle of the invention are included in the protection scope of the invention.
As can be seen from the above description, according to the method for acquiring the vertical occlusal distance in one or more embodiments of the present invention, the scan result of the dentition of the target object may be first acquired by the intraoral scanning device, and the digitized dentition impression may be matched with the intraoral real dentition of the target object by using the optical signal receiver as a medium. By taking a digital dentition impression as an intermediary, the method can introduce a three-dimensional model of the upper jaw and the lower jaw established based on the oral cavity image of the target object into an electronic facial arch system, so as to track and record the lower jaw movement of the target object in real time, and dynamically visualize the temporomandibular joint so as to facilitate medical staff to obtain the needed jaw position relation. Therefore, the method for acquiring the vertical occlusion distance can enable the vertical occlusion distance to be increased, which is a key step of occlusion reconstruction, to obtain an ideal and convenient solution, further enable a three-dimensional virtual patient to develop towards a four-dimensional dynamic direction, initially establish a four-dimensional virtual dental patient, enable dynamic connection between hard tissues of the jaw face to be more visual, further realize visualization and dynamism of a digital oral cavity, thereby providing a new clinical solution for medical staff and meeting higher diagnosis and treatment requirements of the patient.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A method for acquiring occlusion vertical distance is characterized by comprising the following steps:
acquiring a dentition scanning result of the target object when the target object is at a preset occlusion position;
acquiring an oral cavity image of the target object when the target object is in a preset occlusion position, wherein the oral cavity image comprises temporomandibular joints, inferior bony orbitals and complete dentition of the target object;
acquiring a maxilla and mandible three-dimensional model of the target object according to the oral cavity image;
importing the dentition scanning result and the maxilla and mandible three-dimensional model into an electronic face arch system;
acquiring a mandible movement track of the target object by using the electronic facebow system in the process of carrying out preset mandible movement on the target object;
and acquiring a target jaw position and a bite vertical distance according to the mandible movement track of the target object.
2. The method for obtaining the vertical bite distance according to claim 1, wherein: the preset occlusion position is maximum cusp dislocation.
3. The method for acquiring occlusion vertical distance as claimed in claim 1, further comprising: and registering the dentition scanning result and the maxilla three-dimensional model based on a tooth calibration point.
4. The method for obtaining the vertical occlusal distance according to claim 1, wherein the method for obtaining the three-dimensional model of the maxilla and mandible of the target object from the mouth image comprises:
processing temporomandibular joint gaps in the oral cavity image according to the gray threshold range of bones and teeth so as to separate temporomandibular joint fossae from condyles and obtain complete maxilla;
and performing three-dimensional reconstruction according to the complete maxilla and the mandible to obtain the maxilla and the mandible three-dimensional model.
5. The method for obtaining the vertical bite distance according to claim 1, further comprising: replacing dentition in the three-dimensional model of the maxilla with the dentition scan result.
6. The method for obtaining the vertical bite distance according to claim 5, further comprising: marking the mandibular jaw occlusal surfaces and the real occlusal surfaces of the target object in the electronic facial arch system based on preset dental occlusal surface marking points to obtain facial hard tissue registration results of the target object.
7. The method for acquiring the occlusion vertical distance according to claim 1, wherein the preset mandibular movement comprises small jaw movement, the mandibular movement trajectory comprises a plurality of frames of facial images, and the method for acquiring the target jaw position comprises:
displaying the face image corresponding to the small jaw opening movement frame by frame;
acquiring a corresponding frame of facial image as a target image in response to the received instruction;
and acquiring a lower jaw position in the target image as the target jaw position.
8. An occlusal vertical distance acquisition device, characterized in that it comprises:
the scanning result acquisition module is used for acquiring the dentition scanning result of the target object when the target object is at a preset occlusion position;
the oral cavity image acquisition module is used for acquiring an oral cavity image of the target object when the target object is in a preset occlusion position, wherein the oral cavity image comprises a temporomandibular joint, an intraoral infraorbital margin and a complete dentition of the target object;
the three-dimensional model acquisition module is used for acquiring a maxilla and mandible three-dimensional model of the target object according to the oral cavity image;
the data import module is used for importing the dentition scanning result and the maxilla and mandible three-dimensional model into an electronic facebow system;
the mandible track acquisition module is used for acquiring a mandible movement track of the target object by using the electronic facebow system in the process that the target object repeatedly performs a plurality of times of preset mandible movements;
and the vertical distance acquisition module is used for acquiring a target jaw position and a bite vertical distance according to the mandible movement track of the target object.
9. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program, when executed by a processor, implements the method of acquiring a bite vertical distance of any one of claims 1 to 7.
10. An electronic device, characterized in that the electronic device comprises:
a memory storing a computer program;
a processor, communicatively coupled to the memory, that executes the method for obtaining the occlusion vertical distance of any of claims 1-7 when the computer program is invoked.
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| CN112489764A (en) * | 2020-11-30 | 2021-03-12 | 北京大学口腔医学院 | Method for determining jaw position through multi-source data fusion and mandible movement trajectory adjustment |
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