Methods and apparatus for arranging teeth in complete dentures

Abstract

This application proposes a method and apparatus for arranging teeth in complete dentures, belonging to the field of data processing. The method includes aligning maxillary and mandibular oral scan data and silicone occlusal recording data from silicone rubber, and then overlaying preprocessed CBCT data with the aligned maxillary and mandibular oral scan data and silicone rubber oral scan data to obtain first overlaid data. Furthermore, the first overlaid data is overlaid with facial scan data of the patient in various facial states to obtain second overlaid data, and a tooth arrangement plan is derived based on the second overlaid data. This achieves standardized tooth arrangement, facilitates standardized inspection, and reduces the high cost and time required for tooth arrangement. By integrating multiple data sources to provide rich tooth arrangement information, the tooth arrangement plan is better matched to the patient, improving the compatibility between the tooth arrangement plan and the patient.

Description

Technical Field

[0001] This application relates to the field of data processing, and more specifically, to a method and apparatus for arranging teeth in complete dentures. Background Technology

[0002] With the increasing aging population and the influence of dietary habits, there is a growing number of edentulous patients. Due to its low cost, quick recovery time, and ease of adjustment, complete denture implants are one of the feasible solutions for restoring the teeth of edentulous patients.

[0003] Currently, traditional complete denture placement involves a dentist creating a denture base based on a plaster model and recording the occlusal relationship on a wax rim. A technician then arranges the dentures and conducts an aesthetic assessment based on the anatomical markers on the wax rim and working model. This method relies heavily on the technician's experience and skill, as it cannot recreate the dentist's reference lines and planes after placement, making standardized testing impossible. It is costly and time-consuming. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a method and device for arranging teeth in complete dentures, which can perform standardized tooth arrangement without relying on the experience and skill of the technician, thereby improving the problems of high cost and long time consumption of current tooth arrangement methods.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] In a first aspect, embodiments of this application provide a method for arranging teeth in a complete denture, the method comprising:

[0007] The system acquires maxillary and mandibular oral scan data of the tooth arrangement subject, oral CBCT data when the occlusal recording silicone rubber is in the mouth, and facial scan data in various facial states. It also acquires the silicone rubber oral scan data of the occlusal recording silicone rubber. The occlusal relationship of the tooth arrangement subject is recorded on the occlusal recording silicone rubber.

[0008] Align the maxillary and mandibular oral scan data and the silicone rubber oral scan data, reconstruct and trim the oral CBCT data to obtain preprocessed CBCT data, and superimpose and integrate the preprocessed CBCT data with the aligned maxillary and mandibular oral scan data and silicone rubber oral scan data to obtain the first superimposed data.

[0009] The first superimposed data is combined with the area scan data to obtain the second superimposed data;

[0010] Based on the second superimposed data, the tooth arrangement position and denture parameters are determined to obtain a tooth arrangement plan.

[0011] In one possible implementation, the oral CBCT data is the oral CBCT data when the tooth arrangement object has occlusal recording silicone rubber in its mouth and the occlusal recording silicone rubber is provided with multiple metal balls, and the silicone rubber oral scan data is the silicone rubber oral scan data when the occlusal recording silicone rubber is provided with the multiple metal balls.

[0012] The step of overlaying and integrating the preprocessed CBCT data with the aligned maxillary and mandibular intraoral scan data and the silicone intraoral scan data to obtain the first overlaid data includes:

[0013] Based on the metal ball, the same position point is determined for the preprocessed CBCT data and the aligned silicone rubber intraocular scan data;

[0014] Based on the same location point, the jawbone is used as the moving data. The preprocessed CBCT data is superimposed with the aligned maxillary and mandibular oral scan data and the silicone rubber oral scan data to obtain the first superimposed data.

[0015] In one possible implementation, the step of aligning the maxillary and mandibular intraoral scan data with the silicone rubber intraoral scan data includes:

[0016] The first auxiliary tool is invoked to select anatomical structure sites in the maxillary and mandibular oral scan data and the silicone rubber oral scan data, respectively, and the maxillary and mandibular oral scan data and the silicone rubber oral scan data are aligned according to the anatomical structure sites.

[0017] In one possible implementation, the step of reconstructing and trimming the oral CBCT data to obtain preprocessed CBCT data includes:

[0018] The oral CBCT data is reconstructed using the reconstruction function of the second auxiliary tool;

[0019] Using the trimming function of the second auxiliary tool, the reconstructed oral CBCT data is trimmed to obtain preprocessed CBCT data.

[0020] In one possible implementation, the facial scan data includes first facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a natural resting state; second facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a smiling state; third facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a laughing state; and fourth facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is holding the occlusal recording silicone rubber in their mouth.

[0021] The step of superimposing and integrating the first overlaid data with the area scan data to obtain the second overlaid data includes:

[0022] Based on the metal sphere, the same position point where the first superimposed data and the area scan data are located is determined;

[0023] Based on the same location point, the first superimposed data and the area scan data are superimposed and integrated to obtain the second superimposed data.

[0024] In one possible implementation, the facial scan data includes first facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a natural resting state; second facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a smiling state; third facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a laughing state; and fourth facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is holding the occlusal recording silicone rubber in their mouth.

[0025] The step of determining the tooth arrangement position and denture parameters based on the second overlapping data to obtain a tooth arrangement plan includes:

[0026] Using a virtual frame, the anterior condyle guide slope was measured based on the preprocessed CBCT data in the second composite data.

[0027] From the first surface scan data in the second composite data, the incisal position of the upper anterior teeth is selected as the incisal position of the upper anterior teeth of the denture; wherein, the incisal position is 0mm to 2mm below the labia of the tooth arrangement object;

[0028] Based on the corner of the mouth position in the first and second surface scan data of the second composite data, the position of the maxillary canine of the denture is determined;

[0029] Based on the preprocessed CBCT data in the second overlapping data and the position of the incisal edge of the upper anterior teeth, the maxillary plane of the denture is determined;

[0030] Based on the silicone rubber oral and surface scan data in the second composite data, the midline of the denture is determined;

[0031] Based on the first, second, and third surface scan data in the second composite data, the size and shape of the denture are determined.

[0032] In one possible implementation, the step of determining the maxillary plane of the denture based on the preprocessed CBCT data in the second overlapping data and the position of the incisal edge of the upper anterior teeth includes:

[0033] Based on the preprocessed CBCT data in the second superimposed data, the nasal alar-tragus line, orbito-auricular plane, and Monson sphere are marked;

[0034] The maxillary plane of the denture is obtained by fitting the position of the incisal edge of the upper anterior teeth, the nasal ala-tragus line, the orbitoauricular plane, and the Monson sphere.

[0035] In one possible implementation, the step of determining the midline of the denture based on the silicone rubber oral scan data and facial scan data in the second composite data includes:

[0036] From the silicone rubber oral and facial scan data in the second composite data, the facial midline, labial frenulum, and palatal midline are determined, and the facial midline, labial frenulum, and palatal midline are fitted according to a preset rule to obtain the midline of the denture.

[0037] In one possible implementation, the method further includes:

[0038] The occlusion function is checked using a virtual frame with the first auxiliary tool, and virtual adjustment is performed based on the protruding condyle guide angle of the denture to eliminate interference points in tooth alignment.

[0039] Secondly, embodiments of this application provide a complete denture tooth arrangement device, including a data acquisition module, a first overlapping module, a second overlapping module, and a tooth arrangement module;

[0040] The data acquisition module is used to acquire maxillary and mandibular oral scan data of the tooth arrangement object, oral CBCT data when the occlusal recording silicone rubber is in the mouth, and facial scan data in various facial states, and to acquire the silicone rubber oral scan data of the occlusal recording silicone rubber; wherein, the occlusal recording silicone rubber records the occlusal relationship of the tooth arrangement object.

[0041] The first overlay module is used to align the maxillary and mandibular oral scan data and the silicone rubber oral scan data, reconstruct and trim the oral CBCT data to obtain preprocessed CBCT data, and overlay and integrate the preprocessed CBCT data with the aligned maxillary and mandibular oral scan data and silicone rubber oral scan data to obtain the first overlay data.

[0042] The second overlay module is used to overlay and integrate the first overlay data with the area scan data to obtain the second overlay data;

[0043] The tooth arrangement module is used to determine the tooth arrangement position and denture parameters based on the second overlapping data, and obtain a tooth arrangement plan.

[0044] Thirdly, embodiments of this application provide an electronic device including a processor and a memory, the memory storing machine-executable instructions executable by the processor, the processor executing the machine-executable instructions to implement the complete denture tooth arrangement method as described in any possible implementation of the first aspect.

[0045] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the complete denture tooth arrangement method as described in any possible implementation of the first aspect.

[0046] The complete denture tooth arrangement method provided in this application aligns the maxillary and mandibular oral scan data of the patient and the silicone oral scan data of the silicone occlusal recording rubber that records the occlusal relationship of the patient. The oral CBCT data of the patient with the silicone occlusal recording rubber in their mouth is reconstructed and refined to obtain preprocessed CBCT data. This preprocessed CBCT data is then superimposed and integrated with the aligned maxillary and mandibular oral scan data and the silicone oral scan data to obtain first superimposed data. Furthermore, the first superimposed data is superimposed and integrated with facial scan data of the patient in various facial states to obtain second superimposed data. Based on this second superimposed data, a tooth arrangement plan is obtained. In this way, standardized tooth arrangement can be achieved without relying on the technician's skill level and precision, enabling standardized inspection after tooth arrangement, thereby improving the problems of high cost and long processing time of current tooth arrangement methods.

[0047] Furthermore, during tooth arrangement, the maxillary and mandibular oral scan data are aligned with the occlusal recording silicone rubber data gel that records the occlusal relationship of the patient, providing data complementarity and making the spatial positional relationship of the maxilla and mandible more accurate. Then, the reconstructed and refined oral CBCT data is overlaid and integrated with the aligned maxillary and mandibular oral scan data, and further overlaid and integrated with facial scan data. This results in a second overlay data set that not only records the facial expressions of the patient in various facial states but also records a more accurate spatial positional relationship and the midline positional relationship of the maxilla and mandible. This allows the tooth arrangement position determined based on the second overlay data to be more closely matched with the patient, optimizing the tooth arrangement process and improving the fit between the tooth arrangement plan and the patient.

[0048] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0049] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1A schematic diagram of the structure of the complete denture tooth arrangement system provided in the embodiments of this application is shown.

[0051] Figure 2 A schematic flowchart of the complete denture tooth arrangement method provided in the embodiments of this application is shown.

[0052] Figure 3 It shows Figure 2 One of the flowcharts for some sub-steps in step S13.

[0053] Figure 4 It shows Figure 2 The second flowchart of some sub-steps in step S13.

[0054] Figure 5 It shows Figure 2 A flowchart illustrating some sub-steps of step S15.

[0055] Figure 6 It shows Figure 2 A flowchart illustrating some sub-steps of step S17.

[0056] Figure 7 A schematic diagram of the complete denture tooth arrangement device provided in an embodiment of this application is shown.

[0057] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of this application is shown.

[0058] Figure reference numerals: 1000 - Complete denture tooth arrangement system; 10 - Tooth arrangement device; 20 - CBCT scanner; 30 - Scanning device; 40 - Complete denture tooth arrangement device; 401 - Data acquisition module; 402 - First overlapping module; 403 - Second overlapping module; 404 - Tooth arrangement module; 50 - Electronic equipment. Detailed Implementation

[0059] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0060] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0061] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] Traditional complete denture tooth arrangement involves a dentist creating a base using a plaster model as a reference and recording the occlusal relationship on a wax rim. A technician then performs the complete denture tooth arrangement and aesthetic assessment based on the anatomical landmarks on the wax rim and working model. The specific procedure involves: after determining the appropriate positional relationship between the upper and lower jaws, tooth arrangement is performed, including determining the midline, canine position, incisal edge position of the maxillary teeth, tooth size, and planes.

[0063] The aforementioned traditional tooth arrangement methods rely entirely on plaster models and reference lines and planes marked by the dentist, without taking into account the patient's face. This heavily depends on the technician's experience and skill, and the dentist's reference lines and planes cannot be reconstructed after tooth arrangement. Therefore, it is impossible to reconstruct the dentist's reference lines and planes after tooth arrangement, and standardized testing is not possible. Furthermore, tooth arrangement is costly and time-consuming.

[0064] In addition, the traditional tooth arrangement methods mentioned above often fail to satisfy the patients, requiring rework and increasing the number of tooth arrangements and costs.

[0065] Based on the above considerations, this application provides a method for arranging teeth in complete dentures. Based on a facial reference of the patient, it offers a standardized tooth-arranging approach, optimizes the process, and ensures the resulting arrangement is more suitable for the patient. Furthermore, the procedure is simple, reducing costs and time. Moreover, the tooth-arranging process does not rely on the technician's experience or skill level and allows for standardized inspection.

[0066] The complete denture tooth arrangement method provided in this application embodiment can be applied to... Figure 1 The complete denture dental alignment system 1000 shown may include an alignment device 10, a CBCT scanner 20, and a scanning device 30. The alignment device 10 can communicate with the CBCT scanner 20 and the scanning device 30 via wired or wireless means.

[0067] Before data acquisition, professionals can set fixed markers on the face of the person undergoing teeth alignment. For example, metal balls can be attached to the high points of the cheekbones on both sides and the tip of the nose as fixed markers on the face.

[0068] The scanning device 30 is used to scan the face of the dental alignment subject in various facial states, superimpose the scan data of each facial state to obtain facial scan data, and send the facial scan data to the dental alignment device 10.

[0069] The CBCT scanner 20 is used to collect maxillary and mandibular oral scan data of the subject being arranged for tooth arrangement, oral CBCT data of the subject being arranged for tooth arrangement when the subject has occlusal recording silicone rubber in its mouth, and silicone rubber oral scan data of the subject being arranged for occlusal recording silicone rubber. The maxillary and mandibular oral scan data, oral CBCT data and silicone rubber oral scan data are transmitted to the tooth arrangement device 10.

[0070] The tooth arrangement device 10 is used to implement the complete denture tooth arrangement method provided in the embodiments of this application.

[0071] The scanning device 30 includes, but is not limited to, facial scanners and CBCT scanners 20. The dental alignment device 10 includes, but is not limited to, standalone servers, server clusters, personal computers, laptops, and tablets.

[0072] In one possible implementation, a method for arranging teeth in a complete denture is provided, referring to... Figure 2 This may include the following steps. In this embodiment, the complete denture tooth arrangement method is applied to... Figure 1 Let's take the dental alignment device 10 as an example to illustrate.

[0073] S11, acquire the maxillary and mandibular oral scan data of the tooth arrangement object, the oral CBCT data when the occlusal recording silicone rubber is in the mouth, and the facial scan data in various facial states, and acquire the silicone rubber oral scan data of the occlusal recording silicone rubber.

[0074] In this embodiment, the occlusal relationship of the tooth arrangement object is recorded on the occlusal recording silicone rubber. Moreover, after a professional determines the positional relationship between the upper and lower jaws of the tooth arrangement object, the occlusal relationship of the tooth arrangement object is recorded with silicone rubber to obtain the occlusal recording silicone rubber.

[0075] S13, Align the maxillary and mandibular oral scan data and the silicone rubber oral scan data, Reconstruct and refine the oral CBCT data to obtain preprocessed CBCT data, and Overlay and integrate the preprocessed CBCT data with the aligned maxillary and mandibular oral scan data and silicone rubber oral scan data to obtain the first overlay data.

[0076] S15, the first superimposed data and the area scan data are superimposed and integrated to obtain the second superimposed data.

[0077] S17. Based on the second overlapping data, the tooth arrangement position and denture parameters are determined to obtain the tooth arrangement plan.

[0078] After determining the positional relationship between the upper and lower jaws of the patient undergoing tooth alignment, the professional records the occlusal relationship on silicone rubber, obtaining an occlusal recording silicone rubber. In addition, the professional sets fixed marker points on the patient's face. The preset facial locations for setting these fixed marker points can be arbitrarily chosen; for example, they could be at the wing of the nose or at the corner of the mouth, and are not specifically limited in this embodiment.

[0079] In one possible implementation, the preset facial positions can be the highest points of the cheekbones on both sides and the tip of the nose. A professional can attach metal balls to these points as facial fixation markers. The radius of the metal balls can be flexibly set, for example, it can be 0.5mm or 1mm.

[0080] Based on the above, professionals can use scanning device 30 to perform three-dimensional scanning of the face of the dental alignment subject in various facial states to obtain facial scan data. Scanning device 30 transmits the facial scan data to dental alignment device 10. Simultaneously, professionals can use CBCT scanner 20 to scan the upper and lower jaws of the dental alignment subject to obtain maxillary and mandibular oral scan data. Furthermore, CBCT scanner 20 can be used to scan both the dental alignment subject with occlusal recording silicone rubber and the silicone rubber itself to obtain oral CBCT data and silicone rubber oral scan data. CBCT scanner 20 transmits the maxillary and mandibular oral scan data, oral CBCT data, and silicone rubber oral scan data to dental alignment device 10.

[0081] It should be understood that the midline positional relationship of the maxilla and mandible of the person being toothed can be obtained from oral CBCT data.

[0082] The tooth alignment device 10 receives facial scan data, maxillary and mandibular oral scan data, oral CBCT data, and silicone tube oral scan data. It aligns the maxillary and mandibular oral scan data and the silicone tube oral scan data to obtain aligned data. This aligned data is then integrated for data complementarity, making the spatial relationship between the maxilla and mandible of the tooth alignment object more accurate. Simultaneously, the oral CBCT data is reconstructed and refined to eliminate interfering data and correct fuzzy data, resulting in preprocessed CBCT data. Furthermore, the preprocessed CBCT data and the aligned data (i.e., the post-cut maxillary and mandibular oral scan data and the silicone tube oral scan data) are superimposed and integrated to obtain the first superimposed data.

[0083] After obtaining the first superimposed data, the tooth-arranging device 10 integrates the first superimposed data with the facial scan data to obtain the second superimposed data. This second superimposed data not only records the facial expressions of the subject under various facial conditions, but also records a more accurate spatial relationship between the upper and lower jaws and the midline position of the upper and lower jawbones, providing rich information on tooth arrangement. Furthermore, based on the second superimposed data, the required tooth-arranging locations are determined, resulting in a tooth-arranging plan.

[0084] Compared with traditional tooth arrangement methods, the above-mentioned complete denture tooth arrangement method is simple to operate, does not rely on the technician's wellbore and level, and can achieve standardized tooth arrangement, which allows for standardized inspection after tooth arrangement, thereby improving the problem of long time consumption of current tooth arrangement methods.

[0085] In addition, by recording facial expressions under various facial conditions of the patient, as well as more accurate second-overlap data on the spatial relationship between the upper and lower jaws and the midline relationship between the upper and lower jawbones, the tooth placement position and denture parameters are determined. This makes the tooth placement position determined based on the second-overlap data more suitable for the patient, optimizes the tooth placement process, improves the fit between the tooth placement plan and the patient, increases customer satisfaction, thereby reducing the number of tooth placements and lowering the cost of tooth placement.

[0086] For step S11, when acquiring facial scan data, the selection of facial state can be flexibly set. For example, it can be when laughing, smiling and expressionless, or when smiling and expressionless. In this embodiment, no specific limitation is made.

[0087] In one possible implementation, to ensure that the facial scan data is deeply correlated with the oral condition of the patient undergoing tooth alignment, thereby improving the tooth alignment effect, the facial state can include a natural resting state, a smiling state, a laughing state, and a state with the oral occlusion recording silicone rubber in place. In this case, the facial scan data includes first facial scan data when the patient's face has a metal ball attached to a preset position and is in a natural resting state; second facial scan data when the patient's face has a metal ball attached to a preset position and is in a smiling state; third facial scan data when the patient's face has a metal ball attached to a preset position and is in a laughing state; and fourth facial scan data when the patient's face has a metal ball attached to a preset position and is with the oral occlusion recording silicone rubber in place.

[0088] It should be noted that the area scan data is obtained by superimposing the first, second, third, and fourth area scan data. During the superposition process, a metal sphere can be used as a reference point to find the same location point among the first, second, third, and fourth area scan data, align their positions, and then superimpose the data from the points at the same location to obtain the area scan data.

[0089] When using a CBCT scanner to acquire oral CBCT data and occlusal recording silicone rubber oral scan data, multiple metal balls can be dispersed on the occlusal recording silicone rubber in order to make the occlusal recording silicone rubber in the mouth of the tooth-arranging object visible and to facilitate subsequent superposition and integration.

[0090] For example, 6-18 metal balls with a diameter of 1-3 mm can be placed on the occlusal recording silicone rubber. The same number of metal balls are evenly placed on both sides of the labial and lingual sides of the occlusal recording silicone rubber. Furthermore, for each metal ball, half of the metal ball can be embedded in the occlusal recording silicone rubber, and the other half of the metal ball can protrude from the surface of the occlusal recording silicone rubber.

[0091] This setup allows for the visualization of silicone rubber during the collection of oral CBCT data and silicone rubber intraoral scan data.

[0092] For step S13, when aligning the maxillary and mandibular oral scan data and the silicone rubber oral scan data, the first auxiliary tool can be invoked to select anatomical structure sites in the maxillary and mandibular oral scan data and the silicone rubber oral scan data respectively, and align the maxillary and mandibular oral scan data and the silicone rubber oral scan data according to the anatomical structure sites.

[0093] The first auxiliary tool can be a 3D drawing software such as Exocad, but in this embodiment, no specific limitation is made.

[0094] After importing the STL format oral scan data of the mandible and the silicone rubber oral scan data into Exocad software, you can use the "Tools" → "Match Mesh" → "Auto" function of Exocad software to identify and select the same anatomical structure sites between the mandible and the silicone rubber oral scan data for alignment, so as to determine the spatial position relationship between the mandible and the epigastrium.

[0095] The method for obtaining preprocessed CBCT data can also be flexibly set. For example, it can be reconstructed and trimmed according to preset rules, or it can be reconstructed and trimmed using auxiliary tools. In this embodiment, no specific limitation is made.

[0096] In one possible implementation, refer to Figure 3 The following steps can be used to reconstruct and refine oral CBCT data.

[0097] S131, using the reconstruction function of the second auxiliary tool, reconstruct the oral CBCT data.

[0098] S132, using the trimming function of the second auxiliary tool, trim the reconstructed oral CBCT data to obtain preprocessed CBCT data.

[0099] The second auxiliary tool can be a medical imaging control system such as Materialise mimics, but in this embodiment, no specific limitation is made.

[0100] When the second auxiliary tool is Materialise Mimics software, oral CBCT data can be imported into Materialise Mimics. The "segment" → "threshold" function can be used to select a threshold for reconstructing the oral CBCT data. Then, the "edit masks" function of Materialise Mimics software can be used in conjunction with manual adjustments to eliminate interfering data and correct errors, resulting in preprocessed CBCT data that visualizes the maxilla and mandible, face, and occlusion recordings of the metal balls on the silicone rubber.

[0101] Based on the above, since both the silicone rubber in-scan data and the preprocessed CBCT data include metal ball data, referring to... Figure 4 The first superimposed data obtained in step S13 can be achieved through the following steps.

[0102] S133, based on the metal ball, determine the same location point for the preprocessed CBCT data and the aligned silicone rubber intraoral scan data.

[0103] S135, based on the same location point, the jawbone is used as the moving data, and the preprocessed CBCT data is superimposed with the aligned maxillary and mandibular oral scan data and silicone rubber oral scan data to obtain the first superimposed data.

[0104] In real-world scenarios, preprocessed CBCT data in STL format can be imported into Exocad software. Then, the "Tools" → "Match Mesh" → "Auto" function in Exocad software can be used. Using the jawbone as the moving data, the data can be superimposed and integrated by clicking on the same metal ball on the aligned silicone rubber intraoral scan data and the preprocessed CBCT data to obtain the first superimposed data.

[0105] Through the above steps S133 to S135, the superposition and integration of the jawbone, occlusal record and maxillary teeth (mucosa) are completed by data superposition, so that the first superposition data includes the positional relationship of the jawbone, occlusal record and maxillary teeth (mucosa).

[0106] For step S15, the method of superimposing and integrating the first superimposed data and the area scan data can also be flexibly selected. For example, it can be superimposed and integrated according to preset rules, or it can be superimposed and integrated using a model. In this embodiment, no specific limitation is made.

[0107] In one possible implementation, refer to Figure 5In S15, the integration can be achieved through the following steps.

[0108] S151, based on the metal sphere, determine the same position point for the first superimposed data and the surface scan data.

[0109] In step S152, the first overlay data and the surface scan data are superimposed and integrated based on the same location point to obtain the second overlay data. Since the surface scan data includes data on the occlusal recording of silicone rubber with a metal ball in the mouth, and the first overlay data also includes data on the occlusal recording of silicone rubber with a metal ball in the mouth (i.e., silicone rubber oral scan data), in step S151, based on the metal ball in the first overlay data and the metal ball in the surface scan data, the same location point of the same metal ball can be found in both the first overlay data and the surface scan data. Therefore, in step S152, based on multiple sets of the same location points, the first overlay data and the surface scan data are superimposed and integrated (mainly by superimposing the preprocessed CBCT data of the first overlay data and the surface scan data) to obtain the second overlay data.

[0110] Through the above steps S151 to S152, the first superimposed data and surface scan data can be accurately superimposed, which can avoid superimposition errors to a certain extent and help improve the adaptability of the tooth arrangement plan to the tooth arrangement object.

[0111] When arranging a full set of teeth, it is necessary to determine the size and shape of the dentures, the midline, the maxillary plane, the position of the maxillary canines, the position of the incisal edges of the maxillary anterior teeth, and the inclination of the protruding condyles. Therefore, refer to Figure 6 Step S17 can be implemented as follows.

[0112] S171, using a virtual frame and preprocessed CBCT data from the second composite data, the anterior condyle guide slope is measured.

[0113] S172, select the incisal position of the upper anterior teeth from the first surface scan data in the second overlapping data, and use it as the incisal position of the upper anterior teeth of the denture.

[0114] Among them, the incision tip is located 0mm to 2mm below the lip of the tooth being arranged.

[0115] S173, based on the preprocessed CBCT data and the position of the incisal edge of the upper anterior teeth in the second occlusal data, the maxillary plane of the denture is determined.

[0116] S174. Based on the position of the corner of the mouth in the first and second surface scan data of the second overlapping data, determine the position of the maxillary canine of the denture.

[0117] S175, Based on the silicone rubber oral and facial scan data in the second composite data, determine the midline of the denture.

[0118] S176, Based on the first, second, and third surface scan data in the second overlapping data, determine the size and shape of the denture.

[0119] In the above steps S171 to S176, S173 must be executed after S172. The order of S171, S172, S174, S175 and S176 can be arbitrarily changed, or they can be executed simultaneously.

[0120] In step S171, a cylinder can be drawn using SolidWorks software. A plane passing through the cylinder is created with the length direction of the cylinder as the axis. The cylinder and the plane are then combined to obtain an auxiliary file in STL format.

[0121] For example, you can use "Sketch" → "Circle" to draw a circle with a diameter of 1-4mm. Then, select "Features" → "Extrude Base / Boss" to extrude the circle to form a cylinder with a length of 13-20cm. Simultaneously, create a plane through the cylinder, with the cylinder's length as the axis. The plane should be 0.1mm thick and 13-20cm in both length and width. Combine the cylinder and the plane, and save it as an STL file.

[0122] Import the auxiliary file and the preprocessed CBCT data from the second overlay data into the Exocad software and perform data overlay matching. This involves moving the cylinder through the center of both condyles in the preprocessed CBCT data, thus shifting the cylinder's axial direction to the corresponding position on the virtual scaffold. Continue rotating the cylinder and the plane until the plane is simultaneously parallel to the orbitoauricular plane on the CBCT.

[0123] Based on the above, a reference plane parallel to the anterior slope of the superior glenoid fossa in the preprocessed CBCT data is created. The angle between the reference plane and the plane attached to the cylinder is measured using the measurement tool of the exocad software. This yields the protruding condyle guide angle, which characterizes the tooth movement data of the tooth arrangement object.

[0124] In step S172, the incisal position of the upper anterior teeth refers to the position 2mm below the lip. That is, the position of the upper anterior teeth can be the distance from the lower edge of the upper lip to 0mm to 2mm in the first surface scan data.

[0125] Typically, the plane is considered to be parallel to the nasolabial tragus line and forms a 15° angle with the orbitotragus plane. The compensation curve of the maxillary dentition is considered to be part of the Monson sphere. Therefore, in step S173, the preprocessed CBCT data of the second composite data can be used as a basis. That is, the nasolabial tragus line, the orbitotragus plane, and the Monson sphere are marked in the preprocessed CBCT data of the second composite data. Then, the nasolabial tragus line, the orbitotragus plane, and the Monson sphere are connected and fitted to obtain the maxillary plane or curve of the denture.

[0126] In step S174, the position of the maxillary canine can be determined by taking the corner of the mouth in the first and second surface scan data as the distal position of the maxillary canine in the natural resting state and smiling state (i.e., relaxed lips).

[0127] In step S175, the facial midline, labial frenulum, and palatal midline can be determined from the silicone rubber oral scan data and facial scan data in the second composite data, and the facial midline, labial frenulum, and palatal midline can be fitted according to a preset rule to obtain the midline of the denture.

[0128] Traditional tooth alignment methods determine the midline based on the palatal suture and labial frenulum on a plaster model. However, sometimes the intraoral midline does not match the facial midline. Furthermore, traditional tooth alignment only provides intraoral morphology and lacks facial information for reference, thus the results may be unsatisfactory.

[0129] Compared to traditional tooth alignment, the S175 incorporates facial scan data for reference. It uses the facial midline determined by the facial scan data and the labial frenulum and palatal suture determined by the silicone intraoral scan data to fit the midline, thereby improving the accuracy of the midline.

[0130] In S176, the labial curvature between the two corners of the mouth in the first surface scan data (facial data in a natural resting state) of the second laparoscopic data can be used as the width of the upper anterior teeth 3-3, thereby determining the width of the denture. At the same time, based on the first, second, and third surface scan data in the second laparoscopic data, the facial morphology of the dental prosthesis is identified, and the tooth shape corresponding to the facial morphology is used as the shape of the denture.

[0131] Upper front teeth 3-3 refers to the two upper incisors and the lateral incisors adjacent to the two incisors, which is a total of six teeth.

[0132] The facial morphology of the person undergoing tooth alignment can be identified through machine learning models or manually. The tooth shape corresponding to each facial morphology can be preset or generated using a machine learning model; in this embodiment, no specific limitation is made.

[0133] After determining the tooth arrangement parameters (i.e., the size and shape of the denture, midline, maxillary plane, position of the maxillary canines, position of the incisal edge of the maxillary anterior teeth, and protrusion condyle guide angle), the occlusal function can be checked using the virtual frame of the first auxiliary tool. Virtual adjustment can be performed based on the protrusion condyle guide angle of the denture to eliminate tooth arrangement interference points.

[0134] For example, you can use the "Advanced Mode" → "Tools" → "Start Articulation" function in the Exocad software. The articulation type can be selected as Artex CR. Move the second occlusal data as a whole to align the condyle of the virtual articulation with the condyle in the preprocessed CBCT data, ensuring the upper surface of the virtual articulation is flush with the orbitoauricular plane. Simultaneously, input the obtained protruding condyle guide angle and start the "Start Simulated Occlusal Movement" function to complete the virtual articulation transfer process. Then, start the articulation, and when interference points on the denture are displayed during occlusal movement, use the "Adjust Occlusal High Point" function to complete automatic occlusion adjustment.

[0135] The complete denture tooth arrangement method provided in this application integrates facial scanning data from various facial states, maxillary and mandibular oral scanning data, oral scanning data of silicone rubber for occlusal recording, and oral CBCT data when the patient has silicone rubber for occlusal recording in their mouth. Based on this rich information, it enables scientific tooth arrangement, significantly optimizing the process, improving the fit of the arrangement plan, and reducing the number of arrangements and costs. Furthermore, the process is standardized, eliminating reliance on the experience of professionals, simplifying the procedure, facilitating subsequent examination, and reducing the duration of the arrangement. Therefore, it addresses the problems of limited references, cumbersome procedures, high technical sensitivity, and inconvenience for examination inherent in existing technologies.

[0136] In addition, it facilitates detailed adjustments and aesthetic previews, thereby improving the satisfaction of the patient with the tooth arrangement.

[0137] Based on the same inventive concept as the aforementioned complete denture tooth arrangement method, in one possible embodiment, a complete denture tooth arrangement device 40 is also provided. (Refer to...) Figure 7 It may include a data acquisition module 401, a first overlapping module 402, a second overlapping module 403, and a tooth arrangement module 404.

[0138] The data acquisition module 401 is used to acquire maxillary and mandibular oral scan data of the tooth-arranging object, oral CBCT data when the occlusal recording silicone rubber is in the mouth, and facial scan data in various facial states, and to acquire the silicone rubber oral scan data of the occlusal recording silicone rubber. The occlusal recording silicone rubber records the occlusal relationship of the tooth-arranging object.

[0139] The first overlay module 402 is used to align the maxillary and mandibular oral scan data and the silicone rubber oral scan data, reconstruct and trim the oral CBCT data to obtain preprocessed CBCT data, and overlay and integrate the preprocessed CBCT data with the aligned maxillary and mandibular oral scan data and silicone rubber oral scan data to obtain the first overlay data.

[0140] The second overlay module 403 is used to overlay and integrate the first overlay data with the area scan data to obtain the second overlay data.

[0141] The tooth arrangement module 404 is used to determine the tooth arrangement position and denture parameters based on the second overlapping data to obtain a tooth arrangement plan.

[0142] In the aforementioned complete denture tooth arrangement device 40, through the synergistic effect of the data acquisition module 401, the first overlapping module 402, the second overlapping module 403 and the tooth arrangement module 404, standardized tooth arrangement can be achieved without relying on the technician's wellbore and level. Moreover, the tooth arrangement operation is simple, and standardized inspection can be carried out after tooth arrangement, thereby improving the problem of long time consumption in the current tooth arrangement method.

[0143] In addition, by recording facial expressions under various facial conditions of the patient, as well as more accurate second-overlap data on the spatial relationship between the upper and lower jaws and the midline relationship between the upper and lower jawbones, the tooth placement position and denture parameters are determined. This makes the tooth placement position determined based on the second-overlap data more suitable for the patient, optimizes the tooth placement process, improves the fit between the tooth placement plan and the patient, increases customer satisfaction, thereby reducing the number of tooth placements and lowering the cost of tooth placement.

[0144] Specific limitations regarding the complete denture tooth arrangement device 40 can be found in the limitations of the complete denture tooth arrangement method described above, and will not be repeated here. Each module in the complete denture tooth arrangement device 40 can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of the electronic device 50 in hardware form or independent of it, or stored in the memory of the electronic device 50 in software form, so that the processor can call and execute the corresponding operations of each module.

[0145] In one embodiment, an electronic device 50 is provided, the internal structure of which can be shown in the figure below. Figure 8 As shown, the electronic device 50 includes a processor, memory, communication interface, display screen, and input device connected via a system bus. The processor of the electronic device 50 provides computing and control capabilities. The memory of the electronic device 50 includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The communication interface of the electronic device 50 is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, near-field communication (NFC), or other technologies. When the computer program is executed by the processor, it implements the complete denture tooth arrangement method provided in the above embodiment.

[0146] Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the electronic device 50 to which the present invention is applied. The specific electronic device 50 may include, but is not limited to, the following: Figure 8The diagram shows more or fewer components, or combinations of certain components, or different component arrangements.

[0147] In one embodiment, the complete denture tooth-aligning device 40 provided by the present invention, applied to a deployed device, can be implemented as a computer program, which can be implemented in the form of, for example... Figure 8 The electronic device 50 shown operates on this device. The memory of the electronic device 50 can store the various program modules that make up the complete denture dental arrangement device 40, for example, Figure 7 The data acquisition module 401, the first overlapping module 402, the second overlapping module 403, and the tooth arrangement module 404 are shown. The computer program, which consists of these modules, causes the processor to execute the steps in the complete denture tooth arrangement method described in this specification.

[0148] For example, Figure 8 The electronic device 50 shown can be accessed via, for example... Figure 7 The data acquisition module 401 of the complete denture tooth arrangement device 40 shown executes step S11. The electronic device 50 can execute step S13 through the first overlapping module 402. The electronic device 50 can execute step S15 through the second overlapping module 403. The electronic device 50 can execute step S17 through the tooth arrangement module 404.

[0149] In one embodiment, an electronic device 50 is provided, including a processor and a memory for storing one or more programs. When the processor executes one or more programs, the following steps are performed: acquiring maxillary and mandibular oral scan data of the tooth arrangement object, oral CBCT data when the occlusal recording silicone rubber is in the mouth, and facial scan data in various facial states, and acquiring silicone rubber oral scan data; aligning the maxillary and mandibular oral scan data and the silicone rubber oral scan data, reconstructing and trimming the oral CBCT data to obtain preprocessed CBCT data, and superimposing and integrating the preprocessed CBCT data with the aligned maxillary and mandibular oral scan data and the silicone rubber oral scan data to obtain first superimposed data; superimposing and integrating the first superimposed data with the facial scan data to obtain second superimposed data; and based on the second superimposed data, determining the tooth arrangement position and denture parameters to obtain a tooth arrangement plan.

[0150] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, it performs the following steps: acquiring maxillary and mandibular oral scan data of the tooth arrangement object, oral CBCT data when the occlusal recording silicone rubber is in the mouth, and facial scan data in various facial states, and acquiring silicone rubber oral scan data; aligning the maxillary and mandibular oral scan data and the silicone rubber oral scan data; reconstructing and trimming the oral CBCT data to obtain preprocessed CBCT data; and superimposing and integrating the preprocessed CBCT data with the aligned maxillary and mandibular oral scan data and the silicone rubber oral scan data to obtain first superimposed data; superimposing and integrating the first superimposed data with the facial scan data to obtain second superimposed data; and based on the second superimposed data, determining the tooth arrangement position and denture parameters to obtain a tooth arrangement plan.

[0151] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0152] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0153] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0154] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for arranging teeth in a complete denture, characterized in that, The method includes: The system acquires maxillary and mandibular oral scan data of the tooth arrangement subject, oral CBCT data when the occlusal recording silicone rubber is in the mouth, and facial scan data in various facial states. It also acquires the silicone rubber oral scan data of the occlusal recording silicone rubber. The occlusal recording silicone rubber records the centric occlusal relationship of the tooth arrangement subject. Align the maxillary and mandibular oral scan data and the silicone rubber oral scan data, reconstruct and trim the oral CBCT data to obtain preprocessed CBCT data, and superimpose and integrate the preprocessed CBCT data with the aligned maxillary and mandibular oral scan data and silicone rubber oral scan data to obtain the first superimposed data. The first superimposed data is combined with the area scan data to obtain the second superimposed data; Based on the second superimposed data, the tooth arrangement position and denture parameters are determined to obtain a tooth arrangement plan; The oral CBCT data refers to the oral CBCT data when the subject of tooth arrangement has occlusal recording silicone rubber in its mouth and multiple metal balls are set on the occlusal recording silicone rubber; the silicone rubber oral scan data refers to the silicone rubber oral scan data when the occlusal recording silicone rubber is set with the multiple metal balls. The step of overlaying and integrating the preprocessed CBCT data with the aligned maxillary and mandibular intraoral scan data and the silicone intraoral scan data to obtain the first overlaid data includes: Based on the metal ball, the same position point is determined for the preprocessed CBCT data and the aligned silicone rubber intraocular scan data; Based on the same location point, the jawbone is used as the moving data. The preprocessed CBCT data is superimposed with the aligned maxillary and mandibular oral scan data and the silicone rubber oral scan data to obtain the first superimposed data.

2. The method for arranging teeth in a complete denture according to claim 1, characterized in that, The step of aligning the maxillary and mandibular intraoral scan data with the silicone rubber intraoral scan data includes: The first auxiliary tool is invoked to select anatomical structure sites in the maxillary and mandibular oral scan data and the silicone rubber oral scan data, respectively, and the maxillary and mandibular oral scan data and the silicone rubber oral scan data are aligned according to the anatomical structure sites.

3. The method for arranging teeth in a complete denture according to claim 1, characterized in that, The step of reconstructing and trimming the oral CBCT data to obtain preprocessed CBCT data includes: The oral CBCT data is reconstructed using the reconstruction function of the second auxiliary tool; Using the trimming function of the second auxiliary tool, the reconstructed oral CBCT data is trimmed to obtain preprocessed CBCT data.

4. The method for arranging teeth in a complete denture according to claim 1, characterized in that, The facial scan data includes the first facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a natural resting state; the second facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a smiling state; the third facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a laughing state; and the fourth facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is holding the occlusal recording silicone rubber in their mouth. The step of superimposing and integrating the first overlaid data with the area scan data to obtain the second overlaid data includes: Based on the metal sphere, the same position point where the first superimposed data and the area scan data are located is determined; Based on the same location point, the first superimposed data and the area scan data are superimposed and integrated to obtain the second superimposed data.

5. The method for arranging teeth in a complete denture according to any one of claims 1 to 4, characterized in that, The facial scan data includes the first facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a natural resting state; the second facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a smiling state; the third facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is in a laughing state; and the fourth facial scan data when the subject of tooth shaving has a metal ball attached to a preset position on their face and is holding the occlusal recording silicone rubber in their mouth. The step of determining the tooth arrangement position and denture parameters based on the second overlapping data to obtain a tooth arrangement plan includes: Using a virtual frame, the anterior condyle guide slope is measured based on the preprocessed CBCT data in the second composite data. From the first surface scan data in the second composite data, the incisal position of the upper anterior teeth is selected as the incisal position of the upper anterior teeth of the denture; wherein, the incisal position is 0mm~2mm below the labia of the tooth arrangement object; Based on the corner of the mouth position in the first and second surface scan data of the second composite data, the position of the maxillary canine of the denture is determined; Based on the preprocessed CBCT data in the second overlapping data and the position of the incisal edge of the upper anterior teeth, the maxillary plane of the denture is determined; Based on the silicone rubber oral and surface scan data in the second composite data, the midline of the denture is determined; Based on the first, second, and third surface scan data in the second composite data, the size and shape of the denture are determined.

6. The method for arranging teeth in a complete denture according to claim 5, characterized in that, The step of determining the maxillary plane of the denture based on the preprocessed CBCT data in the second overlapping data and the position of the incisal edge of the upper anterior teeth includes: Based on the preprocessed CBCT data in the second composite data, the nasal alar-tragus line, orbito-auricular plane, and Monson sphere are marked. The maxillary plane of the denture is obtained by fitting the position of the incisal edge of the upper anterior teeth, the nasal ala-tragus line, the orbitoauricular plane, and the Monson sphere.

7. The method for arranging teeth in a complete denture according to claim 5, characterized in that, The step of determining the midline of the denture based on the silicone rubber oral and facial scan data in the second composite data includes: From the silicone rubber oral and facial scan data in the second composite data, the facial midline, labial frenulum, and palatal midline are determined, and the facial midline, labial frenulum, and palatal midline are fitted according to a preset rule to obtain the midline of the denture.

8. The method for arranging teeth in a complete denture according to claim 5, characterized in that, The method further includes: The occlusion function is checked using a virtual frame with the first auxiliary tool, and virtual adjustment is performed based on the protruding condyle guide angle of the denture to eliminate interference points in tooth alignment.

9. A complete denture tooth arrangement device, characterized in that, It includes a data acquisition module, a first overlapping module, a second overlapping module, and a tooth arrangement module; The data acquisition module is used to acquire maxillary and mandibular oral scan data of the tooth arrangement object, oral CBCT data when the occlusal recording silicone rubber is in the mouth, and facial scan data in various facial states, and to acquire the silicone rubber oral scan data of the occlusal recording silicone rubber; wherein, the occlusal recording silicone rubber records the occlusal relationship of the tooth arrangement object. The first overlay module is used to align the maxillary and mandibular oral scan data and the silicone rubber oral scan data, reconstruct and trim the oral CBCT data to obtain preprocessed CBCT data, and overlay and integrate the preprocessed CBCT data with the aligned maxillary and mandibular oral scan data and silicone rubber oral scan data to obtain the first overlay data. The second overlay module is used to overlay and integrate the first overlay data with the area scan data to obtain the second overlay data; The tooth arrangement module is used to determine the tooth arrangement position and denture parameters based on the second overlapping data to obtain a tooth arrangement plan; The oral CBCT data refers to the oral CBCT data when the subject of tooth arrangement has occlusal recording silicone rubber in its mouth and multiple metal balls are set on the occlusal recording silicone rubber; the silicone rubber oral scan data refers to the silicone rubber oral scan data when the occlusal recording silicone rubber is set with the multiple metal balls. The first overlapping module is specifically used for: Based on the metal ball, the same position point is determined for the preprocessed CBCT data and the aligned silicone rubber intraocular scan data; Based on the same location point, the jawbone is used as the moving data. The preprocessed CBCT data is superimposed with the aligned maxillary and mandibular oral scan data and the silicone rubber oral scan data to obtain the first superimposed data.

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