A method of calculating a difference between an actual bone augmentation and a designed bone augmentation

Abstract

The application relates to the field of interventional biological medical materials and services, and particularly relates to a method for calculating the difference between actual bone increment and designed bone increment, which comprises the following steps: extracting a patient's original designed bone increment model V1 obtained when a target titanium mesh is designed; obtaining immediate CBCT data of the patient after the target titanium mesh is implanted; obtaining the patient's actual bone increment model V2: extracting the patient's postoperative jawbone model on the immediate CBCT data to obtain the patient's actual bone increment model V2 after the operation; matching the designed bone increment model V1 and the actual bone increment model V2, keeping the corresponding positions of the two models coinciding, and judging whether the designed bone increment model V1 and the actual bone increment model V2 are consistent; if yes, it indicates that no implantation deviation occurs in the operation process of the doctor; if no, it indicates that implantation deviation occurs in the operation process of the doctor. The application has the effect that whether deviation occurs between the actual bone increment and the designed bone increment can be accurately judged.

Description

Technical Field

[0001] The present application relates to the field of implantable biomedical materials and services, and in particular to a method for calculating the difference between actual bone augmentation and designed bone augmentation. Background Art

[0002] When a patient experiences tooth loss and associated bone loss, the current common treatment involves first repairing the bone defect with guided tissue regeneration, followed by dental implantation to replace the missing tooth. The specific procedure involves placing bone powder or bone fragments in the patient's jawbone defect. A titanium mesh is then used to secure the bone powder or fragments within the defect, preventing them from shifting. Finally, a barrier membrane is placed around the titanium mesh to prevent the rapid growth of epithelial cells and fibroblasts, which proliferate more rapidly, while allowing the slower-growing osteoblasts to rapidly grow and form bone. This allows the bone powder or fragments to quickly integrate with the patient's jawbone, completing the bone grafting procedure. Once the bone powder or fragments have integrated with the jawbone, the titanium mesh is simply removed, completing the bone defect repair. The doctor then places an implant in the repaired jawbone. Once the implant has properly integrated with the jawbone, a crown is placed over the implant, completing the crown placement and treating both tooth loss and bone loss.

[0003] With the popularity of personalized titanium mesh, before bone grafting surgery, the patient's jaw model is first obtained, and then the titanium mesh is designed according to the patient's jaw morphology. Finally, the doctor fixes the titanium mesh in the patient's mouth to fix the position of bone powder or bone blocks on the patient's jaw.

[0004] However, in actual operation, after the doctor performs bone grafting and installs the titanium mesh, whether there is any implant deviation during the operation, that is, whether the position of the implanted bone augmentation is consistent with the previously designed bone augmentation position, can only be roughly observed by the human eye, and it is impossible to accurately judge. Therefore, how to accurately judge whether there is a deviation between the actual implanted bone augmentation and the designed bone augmentation is a problem that needs to be solved at present. Summary of the Invention

[0005] In order to accurately determine whether there is a deviation between the actual bone augmentation and the designed bone augmentation, the present application provides a method for calculating the difference between the actual bone augmentation and the designed bone augmentation.

[0006] The present application provides a method for calculating the difference between actual bone augmentation and designed bone augmentation using the following technical solution:

[0007] A method for calculating the difference between actual bone augmentation and designed bone augmentation comprises the following steps:

[0008] Extract the patient's original designed bone augmentation model V1 obtained when designing the target titanium mesh;

[0009] Obtain CBCT data immediately after the patient is implanted with the target titanium mesh;

[0010] Obtaining the patient's actual bone augmentation model V2: Extracting the patient's postoperative jaw model from the immediate CBCT data to obtain the patient's actual postoperative bone augmentation model V2;

[0011] Matching the designed bone augmentation model V1 with the actual bone augmentation model V2, keeping the corresponding positions of the two models coincident, and determining whether the designed bone augmentation model V1 and the actual bone augmentation model V2 are consistent;

[0012] If so, it means that there was no implant deviation during the doctor’s surgery;

[0013] If not, it means that the doctor made an implant deviation during the operation.

[0014] By adopting the above technical solution, the present application obtains the patient's CBCT model after surgery, and obtains the patient's actual bone increment V2 from the CBCT model after implantation of the target titanium mesh. The actual bone increment model is the size of the bone powder or bone block implanted during the patient's surgery. The actual bone increment V2 is then compared with the previously designed bone increment model V1 to determine whether the actual bone increment V2 after bone filling is consistent with the previously designed bone increment model V1. If they are consistent, it means that the position of the bone filling during the operation is consistent with the position designed by the designer, and the doctor performed the bone filling work in full accordance with the plan designed by the designer, and no implant deviation occurred during the doctor's operation; if they are inconsistent, it means that the position of the bone filling during the operation deviated from the position designed by the designer, and implant deviation occurred during the doctor's operation. It is very accurate to determine whether there is a deviation between the actual bone increment and the designed bone increment.

[0015] Optionally, after obtaining the immediate CBCT data of the patient after the target titanium mesh is implanted, the original CBCT data of the patient before the target titanium mesh is implanted is extracted, and the original CBCT data of the patient and the immediate CBCT data are aligned to keep the basic coordinates of the original CBCT data and the immediate CBCT data consistent.

[0016] By adopting the above technical solution, the coordinates of the two models are guaranteed to be consistent, which makes the data more accurate when comparing the two models.

[0017] Optionally, when aligning the patient's original CBCT data and the immediate CBCT data, feature points such as the protruding points of adjacent teeth at the bone loss position are selected on the original CBCT data as the first marking point, and the position corresponding to the first marking point is found on the immediate CBCT data and recorded as the second marking point. When the patient's original CBCT data and the immediate CBCT data are superimposed together, the first marking point and the second marking point are made to coincide.

[0018] By adopting the above technical solution and making the first marking point coincide with the second marking point, the corresponding positions of the original CBCT data and the immediate CBCT data of the patient can be coincident and placed together.

[0019] Optionally, extracting the patient's postoperative jaw model based on the immediate CBCT data to obtain the patient's actual postoperative bone augmentation model V2 includes: extracting the patient's postoperative jaw model based on the immediate CBCT data, and removing the area not covered by the target titanium mesh on the postoperative jaw model, and the model after removal is the patient's actual postoperative bone augmentation model V2.

[0020] By adopting the above technical solution, since only the area covered by the target titanium mesh has increased bone volume, it is only necessary to compare and calculate the area covered by the target titanium mesh. By removing the area not covered by the target titanium mesh, the patient's actual bone augmentation model V2 can be obtained, which facilitates the comparison work of the actual bone augmentation model V2.

[0021] Optionally, when the area not covered by the target titanium mesh is removed on the postoperative jaw model, the target titanium mesh is set as a transparent model.

[0022] By adopting the above technical solution, observation is more convenient.

[0023] Optionally, when the area not covered by the target titanium mesh is removed on the postoperative jaw model, the cutting is performed along the boundary of the target titanium mesh.

[0024] By adopting the above technical solution, the actual bone increment V2 formed after resection is made more accurate.

[0025] Optionally, the method for calculating the difference between the actual bone augmentation and the designed bone augmentation also includes, after determining whether the designed bone augmentation model V1 and the actual bone augmentation model V2 are consistent, obtaining the initial jaw model V0 of the patient before the target titanium mesh is implanted, and superimposing the designed bone augmentation model V1 and the actual bone augmentation model V2 on the initial jaw model V0 for comparison.

[0026] By adopting the above technical solution, by superimposing the designed bone augmentation model V1 and the actual bone augmentation model V2 on the initial jaw model V0 for comparison, the positions of the designed bone augmentation model V1 and the actual bone augmentation model V2 on the initial jaw model V0 of the human body can be obtained, and the judgment is more accurate.

[0027] Optionally, when determining whether the designed bone augmentation model V1 and the actual bone augmentation model V2 are consistent, a difference model between the designed bone augmentation model V1 and the actual bone augmentation model V2 is obtained by calculating the difference between the designed bone augmentation model V1 and the actual bone augmentation model V2, and the volume of the difference model is obtained.

[0028] By adopting the above technical solution, the staff can intuitively see the degree of planting deviation through the volume of the difference model.

[0029] Optionally, the design method of the target titanium mesh includes:

[0030] Obtain the patient's original CBCT data and oral scan model, and match the oral scan model with the CBCT data to obtain the patient's tooth arrangement model;

[0031] According to the implant size determined in the early stage, find the appropriate implant position on the obtained tooth arrangement model;

[0032] Extract the patient's initial jaw model V0 based on the implant position on the patient's tooth arrangement model;

[0033] Based on the position and size of the implant, bone augmentation is designed on the patient's original jaw model V0 to obtain a designed jaw model with bone augmentation. This ensures that the jaw model after bone augmentation can cover the implant on the lingual (palatal), buccal and alveolar ridge sides, providing sufficient bone volume for subsequent implant placement.

[0034] The designed jaw model is compared with the original jaw model V0 to obtain the designed bone augmentation model V1;

[0035] Obtaining the initial coverage of the target titanium mesh model, filling the target titanium mesh unit cell, and obtaining the final target titanium mesh model;

[0036] The target titanium mesh is manufactured according to the model of the target titanium mesh.

[0037] By adopting the above technical solution, the target titanium mesh can be produced, and the produced target titanium mesh matches the shape of the human oral cavity.

[0038] Optionally, when comparing the designed jaw model with the original jaw model V0, the designed jaw model and the original jaw model V0 are superimposed together, and the difference between the designed jaw model and the original jaw model V0 is calculated by Boolean operation, and the difference is the designed bone augmentation model V1.

[0039] By adopting the above technical solution, it is possible to directly perform comparison by designing the bone augmentation model V1, and the comparison is more accurate.

[0040] In summary, this application includes at least one of the following beneficial technical effects:

[0041] 1. The application can obtain the actual bone increment model V2 of the bone graft after the target titanium mesh is implanted, and then compare the actual bone increment model V2 with the design bone increment model V1 when the target titanium mesh is designed, that is, whether the design bone increment model V1 and the actual bone increment model V2 are consistent, so as to determine whether the actual installation position of the target titanium mesh deviates from the pre-designed position, so as to quickly judge whether the doctor deviates during the operation;

[0042] 2. The application can register the original CBCT data of the patient and the immediate CBCT data of the patient, so that the basic coordinates of the original CBCT data and the immediate CBCT data of the patient are consistent, which is convenient for subsequent comparison of the design bone increment model V1 and the actual bone increment model V2, and the comparison data is more accurate;

[0043] 3. After obtaining the immediate CBCT data of the patient, the application cuts the region of the patient's jaw bone covered by the non-target titanium mesh, and cuts the jaw bone model when the target titanium mesh design is transparent, so that the actual bone increment model V2 of the patient can be directly extracted and compared with the design bone increment model V1 in the early stage. The comparison is more convenient and accurate. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 is the overall process schematic diagram of the application.

[0045] Figure 2 is the structural schematic diagram for embodying the design bone increment model V1.

[0046] Figure 3 is the structural schematic diagram for embodying the immediate CBCT data of the patient after implanting the target titanium mesh.

[0047] Figure 4 is the structural schematic diagram for embodying the jaw bone model after the operation.

[0048] Figure 5 is the structural schematic diagram for embodying the actual bone increment model V2.

[0049] Figure 6 is the structural schematic diagram for embodying the actual bone increment model V2 and the design bone increment model V1 after being superimposed together.

[0050] Figure 7 is the structural schematic diagram for embodying the difference model of the design bone increment model V1 and the actual bone increment model V2. DETAILED DESCRIPTION

[0051] The following will be described in detail in combination with the accompanying Figures 1-7 The application will be further described in detail.

[0052] The present invention discloses a method for calculating the difference between the actual bone augmentation and the designed bone augmentation. Figure 1 The method for calculating the difference between the actual bone augmentation and the designed bone augmentation includes the following steps.

[0053] Reference Figure 1 and Figure 2 , S1: Extract the patient's designed bone augmentation model V1.

[0054] Specifically, the patient's original bone augmentation model V1 obtained when designing the target titanium mesh is extracted. Since the target titanium mesh is initially manufactured based on the patient's oral morphology and is used to match the patient's oral morphology, the required bone augmentation must be designed when designing the target titanium mesh. Specifically, the design method of the target titanium mesh includes the following steps:

[0055] S11: Obtain the patient's tooth arrangement model.

[0056] Specifically, the patient's original CBCT data and oral scan model are obtained, and the oral scan model is matched with the CBCT data to obtain the patient's tooth arrangement model.

[0057] The patient's original CBCT data is obtained through oral CT equipment, and the patient's oral scan model is obtained through an oral scanning probe. The patient's original CBCT data and oral scan model are then imported into 3D visualization software. The patient's oral scan model and CBCT data are combined through the 3D visualization software to obtain the patient's tooth arrangement model.

[0058] S12: Find the implant location.

[0059] When looking for the implant placement, find a suitable implant placement on the obtained tooth arrangement model based on the implant size determined in advance.

[0060] According to the position and size of the adjacent teeth on the patient's dental model, a crown model of appropriate size is selected for the patient, so that when the crown model is placed in the position to be implanted, the positional relationship and size of the crown and the adjacent teeth match. Then determine the size and implantation position of the implant based on the final shape and position of the crown to be worn. When selecting the implantation position, select the jawbone where the teeth are missing, 2-4mm away from both sides of the final shape of the crown, so that the implant is located in the middle of the crown to be worn; select the jawbone where the teeth are missing, 1.5-3.5mm away from the buccal side and 1-3.5mm away from the lingual side (palatal side) as the implantation position of the implant, so that after the subsequent implant is in place, the implant can be completely wrapped by the patient's jawbone and the jawbone can provide sufficient support for the implant, and after the crown is worn through the implant, the crown is in the pre-designed position.

[0061] S13: Extract the patient's initial jaw model V0.

[0062] The patient's initial jaw model V0 is extracted based on the implant position on the patient's tooth arrangement model.

[0063] S14: Design of bone augmentation.

[0064] According to the position and size of the implant, bone augmentation is designed on the patient's original jaw model V0 to obtain a designed jaw model with bone augmentation, ensuring that the jaw model after bone augmentation can wrap the implant on the lingual side (palatal side), buccal side and alveolar ridge top, and the wrapping thickness after filling meets the above-mentioned distance of 2-4mm on both sides of the final crown shape, 1.5-3.5mm from the buccal side, and 1-3.5mm from the lingual side (palatal side), providing sufficient bone volume for the later implant placement.

[0065] S15: Obtain the designed bone augmentation model V1.

[0066] The designed jaw model was compared with the original jaw model V0. Since the difference between the two models is that the designed jaw model includes the designed bone augmentation, the designed jaw model and the original jaw model V0 were superimposed in 3D visualization software. The difference between the designed jaw model and the original jaw model V0 was calculated using a Boolean operation. The difference between the two models was used to determine the designed bone augmentation model V1.

[0067] S16: Obtaining a model of the target titanium mesh.

[0068] After the bone augmentation design is completed, the surface data of the designed jaw model after bone augmentation is extracted and used as the initial coverage of the target titanium mesh model. This ensures that the manufactured target titanium mesh closely fits the surface of the augmented jaw, ensuring stable fixation of the bone powder or bone block.

[0069] After obtaining the initial coverage of the target titanium mesh model, the model of the initial coverage of the target titanium mesh is exported and imported into the three-dimensional analytical model. The unit cells of the target titanium mesh are filled using the three-dimensional analytical model to obtain the final target titanium mesh model.

[0070] Finally, the target titanium mesh can be printed and produced through 3D printing and other technologies.

[0071] Reference Figure 3 ,S2: Acquire the CBCT data of the patient immediately after implanting the target titanium mesh.

[0072] Reference Figure 4 and Figure 5S3: Obtain the patient's actual bone augmentation model V2. Extract the patient's postoperative jaw model based on the immediate CBCT data to obtain the patient's actual postoperative bone augmentation model V2;

[0073] Specifically, the patient's postoperative jaw model is extracted from the immediate CBCT data. Since only the area covered by the target titanium mesh is filled with bone augmentation, the area not covered by the target titanium mesh can be removed from the postoperative jaw model. The model after resection is the patient's actual postoperative bone augmentation model V2.

[0074] In order to ensure the effect after resection, the target titanium mesh can be set as a transparent model during resection, and then cut along the boundary of the target titanium mesh to obtain a model of the area covered by the target titanium mesh. This model is the patient's actual bone augmentation model V2 after surgery.

[0075] Reference Figure 6 , S4: Determine whether the actual bone augmentation V2 is consistent with the designed bone augmentation V1.

[0076] The designed bone augmentation model V1 and the actual bone augmentation model V2 are matched, the corresponding positions of the two models are kept overlapping, and it is determined whether the actual bone augmentation V2 is consistent with the designed bone augmentation V1.

[0077] Import both the patient's designed bone augmentation model V1 and the actual bone augmentation model V2 into the 3D visualization software. When the designed bone augmentation model V1 and the actual bone augmentation model V2 are superimposed for comparison and judgment, the corresponding positions of the two models need to be kept consistent. Therefore, after obtaining the immediate CBCT data of the patient after implantation of the target titanium mesh in step S2, the patient's original CBCT data and the immediate CBCT data need to be aligned.

[0078] Specifically, a feature point, such as the protruding point of the adjacent tooth at the bone loss location, is selected from the patient's original CBCT data as the first marker point. The location corresponding to the first marker point is found in the immediate CBCT data and recorded as the second marker point. When the patient's original and immediate CBCT data are superimposed, the first marker point and the second marker point coincide. At this point, the first marker point serves as the origin of the position coordinates for the patient's original CBCT data, and the second marker point serves as the origin of the position coordinates for the patient's immediate CBCT data. The first marker point is then retained when extracting the patient's designed bone augmentation model V1, and the second marker point is retained when extracting the patient's actual postoperative bone augmentation model V2.

[0079] When matching the patient's designed bone augmentation model V1 and the actual bone augmentation model V2, it is only necessary to keep the first marking point and the second marking point coincident so that the corresponding positions of the patient's designed bone augmentation model V1 and the actual bone augmentation model V2 coincide. The staff can directly determine whether the designed bone augmentation model V1 and the actual bone augmentation model V2 are consistent.

[0080] If the answer is yes, that is, the patient's designed bone augmentation model V1 and the actual bone augmentation model V2 are consistent, then it proves that the doctor implanted the target titanium mesh and bone augmentation in accordance with the pre-designed position, and there was no implant deviation during the doctor's operation.

[0081] If the answer is no, that is, the patient's designed bone augmentation model V1 and the actual bone augmentation model V2 are inconsistent, then it proves that the bone augmentation during the operation is inconsistent with the bone augmentation designed in the early stage, indicating that the doctor has implant deviation during the operation.

[0082] By determining whether the designed bone augmentation model V1 and the actual bone augmentation model V2 are consistent, it is possible to accurately determine whether there is a deviation between the actual bone augmentation and the designed bone augmentation, allowing the doctor to clearly understand the surgical situation in order to formulate subsequent treatment plans.

[0083] Reference Figure 7 To facilitate intuitive evaluation of the degree of deviation between the designed bone augmentation model V1 and the actual bone augmentation model V2, a Boolean operation can be used to determine the difference between the designed and actual bone augmentation models V1 and V2, thereby obtaining a difference model. This difference model allows staff to directly determine the degree of deviation between the designed and actual bone augmentation models V1 and V2.

[0084] Of course, the staff can also further obtain the volume of the difference model, so as to further understand the degree of deviation between the designed bone augmentation model V1 and the actual bone augmentation model V2.

[0085] The method for calculating the difference between the actual bone augmentation and the designed bone augmentation may also include:

[0086] S5: Determine the positions of the designed bone augmentation model V1 and the actual bone augmentation model V2 on the initial human jaw model V0.

[0087] When judging whether the designed bone augmentation model V1 and the actual bone augmentation model V2 are consistent, the initial jaw model V0 of the patient before the target titanium mesh is implanted is obtained, and the designed bone augmentation model V1 and the actual bone augmentation model V2 are superimposed on the initial jaw model V0 for comparison. The positions of the designed bone augmentation model V1 and the actual bone augmentation model V2 on the initial jaw model V0 of the human body can be obtained, making the judgment more accurate.

[0088] The implementation principle of a method for calculating the difference between actual bone augmentation and designed bone augmentation in an embodiment of the present application is as follows: After the doctor installs the target titanium mesh in the patient's mouth and completes the bone grafting surgery, the patient's immediate CBCT data can be obtained, and the designed bone augmentation model V1 when the target titanium mesh was designed can be retrieved. Then, both the patient's immediate CBCT data and the designed bone augmentation model V1 are imported into 3D visualization software. The patient's actual bone augmentation model V2 is obtained from the patient's immediate CBCT data through the 3D visualization software. Finally, the designed bone augmentation model V1 and the actual bone augmentation model V2 are compared to determine whether the designed bone augmentation model V1 and the actual bone augmentation model V2 are consistent. This can accurately determine whether there is a deviation between the actual bone augmentation and the designed bone augmentation, and whether the doctor has made an implant deviation during the implantation process.

[0089] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A method for calculating the difference between actual bone augmentation and designed bone augmentation, characterized in that: The following steps are involved: Extract the patient's original designed bone augmentation model V1 obtained when designing the target titanium mesh; Acquire CBCT data immediately after the patient is implanted with the target titanium mesh; Obtaining the patient's actual bone augmentation model V2: Extracting the patient's postoperative jaw model from the immediate CBCT data to obtain the patient's actual postoperative bone augmentation model V2; Matching the designed bone augmentation model V1 with the actual bone augmentation model V2, keeping the corresponding positions of the two models coincident, and determining whether the designed bone augmentation model V1 and the actual bone augmentation model V2 are consistent; If so, it means that there was no implant deviation during the doctor’s surgery; If not, it means that the doctor made an implant deviation during the operation.

2. The method for calculating the difference between actual bone augmentation and designed bone augmentation according to claim 1, characterized in that: After obtaining the immediate CBCT data of the patient after the target titanium mesh is implanted, the original CBCT data of the patient before the target titanium mesh is implanted is extracted, and the original CBCT data of the patient and the immediate CBCT data are aligned to keep the basic coordinates of the original CBCT data and the immediate CBCT data consistent.

3. The method for calculating the difference between actual bone augmentation and designed bone augmentation according to claim 2, characterized in that: When the original CBCT data and the immediate CBCT data of the patient are registered, the protruding point of the adjacent tooth at the bone loss position is selected on the original CBCT data as the first marking point, and the position corresponding to the first marking point is found on the immediate CBCT data and recorded as the second marking point. When the original CBCT data and the immediate CBCT data of the patient are superimposed, the first marking point and the second marking point are overlapped.

4. The method for calculating the difference between actual bone augmentation and designed bone augmentation according to claim 2, characterized in that: Extracting the patient's postoperative jaw model based on the immediate CBCT data to obtain the patient's actual postoperative bone augmentation model V2 includes: extracting the patient's postoperative jaw model based on the immediate CBCT data, and removing the area not covered by the target titanium mesh on the postoperative jaw model, where the model after the removal is the patient's actual postoperative bone augmentation model V2.

5. The method for calculating the difference between actual bone augmentation and designed bone augmentation according to claim 4, characterized in that: When the area not covered by the target titanium mesh is removed on the postoperative jaw model, the target titanium mesh is set as a transparent model.

6. The method for calculating the difference between actual bone augmentation and designed bone augmentation according to claim 5, characterized in that: When the area not covered by the target titanium mesh is removed on the postoperative jaw model, the cutting is performed along the boundary of the target titanium mesh.

7. The method for calculating the difference between actual bone augmentation and designed bone augmentation according to claim 1, characterized in that: The method for calculating the difference between the actual bone augmentation and the designed bone augmentation also includes obtaining an initial jaw model V0 of the patient before implantation of the target titanium mesh when determining whether the designed bone augmentation model V1 and the actual bone augmentation model V2 are consistent, and superimposing the designed bone augmentation model V1 and the actual bone augmentation model V2 on the initial jaw model V0 for comparison.

8. The method for calculating the difference between actual bone augmentation and designed bone augmentation according to claim 1, characterized in that: After determining whether the designed bone augmentation model V1 is consistent with the actual bone augmentation model V2, a difference model between the designed bone augmentation model V1 and the actual bone augmentation model V2 is obtained by calculating the difference between the designed bone augmentation model V1 and the actual bone augmentation model V2, and the volume of the difference model is obtained.

9. The method for calculating the difference between actual bone augmentation and designed bone augmentation according to claim 1, characterized in that: The design method of the target titanium mesh includes: Obtain the patient's original CBCT data and oral scan model, and match the oral scan model with the CBCT data to obtain the patient's tooth arrangement model; According to the implant size determined in the early stage, find the appropriate implant position on the obtained tooth arrangement model; Extract the patient's initial jaw model V0 based on the implant position on the patient's tooth arrangement model; Based on the position and size of the implant, bone augmentation is designed on the patient's original jaw model V0 to obtain a designed jaw model with bone augmentation. This ensures that the jaw model after bone augmentation can cover the implant on the lingual side, buccal side and alveolar ridge top, or on the palatal side, buccal side and alveolar ridge top, providing sufficient bone volume for subsequent implant placement. The designed jaw model is compared with the original jaw model V0 to obtain the designed bone augmentation model V1; The initial coverage of the target titanium mesh model is obtained, and the target titanium mesh unit cell is filled to obtain the final target titanium mesh model.

10. The method for calculating the difference between actual bone augmentation and designed bone augmentation according to claim 9, characterized in that: When comparing the designed jaw model with the original jaw model V0, the designed jaw model and the original jaw model V0 are superimposed together, and the difference between the designed jaw model and the original jaw model V0 is calculated by Boolean operation, and the difference is the designed bone augmentation model V1.

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