Prosthesis design method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention provides a prosthesis design method and device, electronic equipment and a storage medium, and belongs to the technical field of medical treatment. The method comprises the following steps: performing intraoral scanning to obtain an original scanning copy; deleting the target abutment and the surrounding area of the original scanning copy to obtain a first scanning copy; performing supplementary scanning on the target abutment and the surrounding area thereof based on the first scanning copy to obtain a second scanning copy; performing supplementary scanning on the target abutment and the surrounding area thereof based on the first scanning copy to obtain a third scanning copy; and determining a target restoration model according to the second scanning piece and the third scanning piece. According to the embodiment of the invention, the restoration manufacturing time can be shortened, the restoration accuracy is improved, and the requirement of restoration design on the operation capability of doctors is reduced.

Description

Technical Field

[0001] The present application relates to the field of medical technology, and in particular to a restoration design method and device, electronic equipment and storage medium. Background Art

[0002] When designing a restoration, if the optical impression cannot accurately reflect the actual position of the gingival sulcus bottom, the edge of the restoration will appear too long or too short. During clinical trial fitting of the restoration, the edge of the restoration needs to be repeatedly adjusted to prevent it from invading the gingival sulcus bottom and pressing the gums, or resin materials need to be used to reline the restoration edge to the appropriate position, which will undoubtedly increase the production time and require a high level of doctor's operational ability.

[0003] In summary, the technical problems existing in the relevant technologies need to be improved. Summary of the invention

[0004] The main purpose of the embodiments of the present application is to propose a restoration design method and device, electronic equipment and storage medium, aiming to reduce the restoration production time, improve the restoration accuracy, and reduce the restoration design requirements on the doctor's operational ability.

[0005] To achieve the above object, one aspect of an embodiment of the present application provides a restoration design method, the method comprising the following steps:

[0006] Perform intraoral scanning to obtain the original scan;

[0007] Deleting the target abutment tooth and its surrounding area from the original scan to obtain a first scan;

[0008] Performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a second scan;

[0009] Performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a third scan;

[0010] A target restoration model is determined based on the second scan and the third scan.

[0011] In some embodiments, the method further comprises:

[0012] Perform vertical tooth preparation to create a finished area of ​​the preparation margin.

[0013] In some embodiments, the target abutment tooth and its surrounding area include the entire preparation, the edge completion area of ​​the preparation, the position of the alveolar ridge top of the root of the preparation, and the adjacent surface of the adjacent tooth that is not the preparation.

[0014] The method of performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a second scan includes:

[0015] Based on the first scan, the entire preparation, the edge completion area of ​​the preparation, the position of the alveolar ridge top of the root of the preparation, and the adjacent surface of the adjacent tooth that is not a preparation are scanned to obtain a second scan.

[0016] In some embodiments, the target abutment tooth and its surrounding area include the entire preparation, the edge completion area of ​​the partial preparation and its gingival margin position and the adjacent surface of the adjacent tooth non-preparation.

[0017] The method of performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a third scan includes:

[0018] Based on the first scan, the entire prepared body, the edge completion area of ​​the partial prepared body and its gingival margin position and the adjacent surface of the adjacent tooth non-prepared body are scanned to obtain a third scan.

[0019] In some embodiments, determining the target restoration model according to the second scan and the third scan includes:

[0020] The second scan is used as a working model and the third scan is used as a reference model, and the second scan is combined with the third scan to obtain a first complete model, wherein the first complete model includes a preparation completion area, a position of an alveolar crest, and a position of a gingival margin;

[0021] Determine the restoration edge position and target parameters according to the first complete model, wherein the target parameters include edge line width, edge horizontal width, edge tilt width, edge tilt angle, edge vertical height and edge line displacement;

[0022] The target restoration model is generated by design software according to the restoration edge position and the target parameters.

[0023] In some embodiments, generating a target restoration model according to the restoration edge position and the target parameters by design software includes:

[0024] Set the road in place;

[0025] Calling the target full crown template in the database and completing the positioning according to the positioning path;

[0026] Generate an original restoration model according to the insertion path, the target crown template, the restoration edge position and the target parameters by design software;

[0027] The morphology, occlusion and adjacency relationship of the original restoration model are adjusted using a morphology adjustment tool to obtain a target restoration model.

[0028] In some embodiments, the method further comprises:

[0029] Outputting the target restoration model as a stereolithography file;

[0030] The target restoration is manufactured according to the stereolithography file by a chairside computer-aided manufacturing system.

[0031] To achieve the above-mentioned purpose, another aspect of the embodiment of the present application provides a restoration design device, the device comprising:

[0032] The original scanning module is used to perform intraoral scanning to obtain the original scanned copy;

[0033] A deletion module, used for deleting the target abutment and its surrounding area from the original scan to obtain a first scan;

[0034] A first supplementary scanning module, configured to supplementary scan the target abutment tooth and its surrounding area based on the first scan to obtain a second scan;

[0035] A second supplementary scanning module is used to supplement the target abutment tooth and its surrounding area based on the first scan to obtain a third scan;

[0036] A model determination module is used to determine a target restoration model according to the second scan and the third scan.

[0037] To achieve the above-mentioned purpose, another aspect of an embodiment of the present application provides an electronic device, the electronic device comprising a memory and a processor, the memory storing a computer program, and the processor implementing the above-mentioned method when executing the computer program.

[0038] To achieve the above objective, another aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described above is implemented.

[0039] The embodiments of the present application include at least the following beneficial effects: the present application provides a restoration design method and apparatus, an electronic device and a storage medium, the scheme obtains an original scan by performing an intraoral scan; deletes the target abutment tooth and its surrounding area of ​​the original scan to obtain a first scan; based on the first scan, re-scans the target abutment tooth and its surrounding area to obtain a second scan; based on the first scan, re-scans the target abutment tooth and its surrounding area to obtain a third scan; determines the target restoration model according to the second scan and the third scan, which is beneficial to reducing the restoration production time, improving the restoration accuracy, and reducing the restoration design requirements on the doctor's operational ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a flow chart of a restoration design method provided in an embodiment of the present application;

[0041] Figure 2 yes Figure 1 Flow chart of step S105 in FIG.

[0042] Figure 3 yes Figure 2 Flow chart of step S203 in FIG.

[0043] Figure 4 is another flow chart of the restoration design method provided in the embodiment of the present application;

[0044] Figure 5 is a schematic diagram of the maxillary dentition of the original scan provided in the embodiment of the present application;

[0045] Figure 6 is a schematic diagram of the mandibular dentition of the original scan provided in the embodiment of the present application;

[0046] Figure 7 is a schematic diagram of the occlusal relationship of the original scan provided in the embodiment of the present application;

[0047] Figure 8 is a schematic diagram of deleting a target abutment provided in an embodiment of the present application;

[0048] Fig. 9 It is a schematic diagram of vertical tooth preparation provided in an embodiment of the present application;

[0049] Fig.10 is a schematic diagram of a second scan provided in an embodiment of the present application;

[0050] Fig.11 is a schematic diagram of a third scan provided in an embodiment of the present application;

[0051] Fig.12 is a schematic diagram of the target abutment and its surrounding area to be merged in the first section of the selected scan 3 provided in an embodiment of the present application;

[0052] Fig.13 is a schematic diagram of the target abutment and its surrounding area to be merged in the second section of the selected scan 3 provided in an embodiment of the present application;

[0053] Fig.14 is a schematic diagram of the target abutment and its surrounding area to be merged in the third section of the selected scan 3 provided in an embodiment of the present application;

[0054] Fig.15 is a schematic diagram of the target abutment and its surrounding area to be merged in the first section of the intercepted scan 3 provided in an embodiment of the present application;

[0055] Fig.16 is a schematic diagram of the target abutment and its surrounding area to be merged in the second section of the intercepted scan 3 provided in an embodiment of the present application;

[0056] Fig.17 is a schematic diagram of the target abutment and its surrounding area to be merged in the third segment of the intercepted scan 3 provided in an embodiment of the present application;

[0057] Fig.18 is a schematic diagram of selecting multiple marking points in the first scan 2 and scan 3 provided in an embodiment of the present application;

[0058] Fig.19 is a schematic diagram of selecting multiple marking points in the second scan 2 and scan 3 provided in an embodiment of the present application;

[0059] Fig. 20 is a schematic diagram of selecting multiple marking points in the third scan 2 and scan 3 provided in an embodiment of the present application;

[0060] Fig.21 It is a schematic diagram of the first complete model of the first section provided in the embodiment of the present application;

[0061] Fig. 22 It is a schematic diagram of the first complete model of the second section provided in the embodiment of the present application;

[0062] Fig.23 It is a schematic diagram of the first complete model of the third section provided in the embodiment of the present application;

[0063] Fig.24 It is a schematic diagram of determining the edge of a restoration according to the position of the alveolar ridge top provided in an embodiment of the present application;

[0064] Fig.25 Schematic diagram of the relationship between the edge of the restoration, the gingival margin, and the alveolar ridge top provided in the embodiment of the present application;

[0065] Fig.26 It is a schematic diagram of parameter determination provided by an embodiment of the present application;

[0066] Fig. 27 is a schematic diagram of a target restoration model provided in an embodiment of the present application;

[0067] Fig.28 is a schematic diagram of a target restoration provided in an embodiment of the present application;

[0068] Fig.29 is a schematic diagram of the structure of a restoration design device provided in an embodiment of the present application;

[0069] Fig.30 It is a schematic diagram of the hardware structure of the electronic device provided in the embodiment of the present application. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. They are only examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the attached claims.

[0071] It is understood that the terms "first", "second", etc. used in this application can be used to describe various concepts in this article, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another concept. For example, without departing from the scope of the embodiment of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination".

[0072] The terms "at least one", "multiple", "each", "any", etc. used in this application, at least one includes one, two or more, multiple includes two or more, each refers to each of the corresponding multiple, and any refers to any one of the multiple.

[0073] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0074] Before describing the embodiments of the present application in detail, some nouns and terms involved in the embodiments of the present application are first described. The nouns and terms involved in the embodiments of the present application are subject to the following explanations.

[0075] 1) EXO CAD is a leading dental computer-aided design (CAD) and computer-aided manufacturing (CAM) software. EXO CAD provides a range of tools and functions to help dentists and technicians perform precise tooth modeling, restoration design and virtual try-in on the computer.

[0076] 2) Chairside CAM system (Computer Aided Manufacturing), that is, the chairside application of computer-aided manufacturing system in the field of dental restoration, is an important part of chairside CAD / CAM (computer-aided design / computer-aided manufacturing) technology. Chairside CAM system integrates optoelectronic technology, computer information processing and automatic machining technology, and is used to produce exquisite and high-precision dental restorations.

[0077] When designing a restoration, if the optical impression cannot accurately reflect the actual position of the gingival sulcus bottom, the edge of the restoration will appear too long or too short. During clinical trial fitting of the restoration, the edge of the restoration needs to be repeatedly adjusted to prevent it from invading the gingival sulcus bottom and pressing the gums, or resin materials need to be used to reline the restoration edge to the appropriate position, which will undoubtedly increase the production time and require a high level of doctor's operational ability.

[0078] In summary, the technical problems existing in the relevant technologies need to be improved.

[0079] In view of this, a restoration design method, apparatus, device and medium are provided in an embodiment of the present application. The scheme obtains an original scan by performing an intraoral scan; deletes the target abutment tooth and its surrounding area of ​​the original scan to obtain a first scan; based on the first scan, the target abutment tooth and its surrounding area are supplemented to obtain a second scan; based on the first scan, the target abutment tooth and its surrounding area are supplemented to obtain a third scan; and the target restoration model is determined according to the second scan and the third scan, which is beneficial to reducing the restoration production time, improving the restoration accuracy, and reducing the restoration design requirements on the doctor's operational capabilities.

[0080] The restoration design method provided in the embodiment of the present application relates to the field of medical technology. The restoration design method provided in the embodiment of the present application can be applied to a terminal, can be applied to a server, or can be software running in a terminal or a server. In some embodiments, the terminal can be a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart speaker, a smart watch, and a car terminal, etc., but is not limited to this; the server side can be configured as an independent physical server, or it can be configured as a server cluster or a distributed system composed of multiple physical servers, and can also be configured as a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms. The server can also be a node server in a blockchain network; the software can be an application that implements the restoration design method, etc., but is not limited to the above forms.

[0081] The present application can be used in many general or special computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, etc. The present application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application can also be practiced in distributed computing environments, in which tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules can be located in local and remote computer storage media including storage devices.

[0082] Figure 1 is an optional flow chart of the restoration design method provided in the embodiment of the present application, Figure 1 The method may include but is not limited to steps S101 to S105.

[0083] Step S101, perform intraoral scanning to obtain an original scan;

[0084] In some embodiments, an intraoral digital scanner is used to perform an intraoral scan of the patient's upper and lower jaw dentition and occlusion to obtain an original scan.

[0085] The present application does not make any specific limitation on intraoral scanning, and it can be flexibly selected according to actual needs. For example, an intraoral digital scanner can be used, or other types of scanners can be used.

[0086] In this embodiment, intraoral scanning is performed to obtain an original scan, which is conducive to providing comprehensive information on the internal structure of the oral cavity and providing basic data for subsequent restoration design.

[0087] Step S102, deleting the target abutment tooth and its surrounding area from the original scan to obtain a first scan;

[0088] Specifically, the target abutment tooth and its surrounding area include the entire target abutment tooth and the surrounding gums and the adjacent surfaces of the adjacent teeth that are not prepared.

[0089] Optionally, the target abutment is input or selected by a user (ie, a medical professional).

[0090] In some embodiments, a trimming tool of the scanning interface is used to delete the target abutment and its surrounding area to obtain a first scan.

[0091] Furthermore, vertical tooth preparation is performed to form a preparation edge finishing area.

[0092] In this embodiment, the target abutment tooth and its surrounding area of ​​the original scan are deleted to obtain a first scan, which is prepared for subsequent supplementary scanning.

[0093] Step S103, performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a second scan;

[0094] Specifically, the target abutment tooth and its surrounding area include the entire preparation, the edge completion area of ​​the preparation, the position of the alveolar ridge top of the root of the preparation, and the adjacent surface of the adjacent tooth that is not the preparation.

[0095] In some embodiments, after tooth preparation is completed and before suturing, the entire preparation, the finished area of ​​the preparation edge, the position of the alveolar ridge top of the preparation root, and the adjacent surfaces of the adjacent teeth that are not prepared are scanned based on the first scan to obtain a second scan.

[0096] In this embodiment, the target abutment tooth and its surrounding area are supplemented with a scan based on the first scan to obtain a second scan, which is beneficial to improving the integrity and accuracy of the data of the target abutment tooth and its surrounding area and providing accurate basic data for restoration design.

[0097] Step S104, performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a third scan;

[0098] Specifically, the target abutment tooth and its surrounding area include the entire preparation, the edge completion area of ​​the partial preparation and its gingival margin position and the adjacent surface of the adjacent tooth that is not a preparation.

[0099] It can be understood that the second scan and the third scan are digital models.

[0100] In some embodiments, after the gingival tissue in the surgical area is repositioned and sutured and bleeding is fully stopped, the entire preparation, the partial preparation edge completion area, its gingival margin position and the adjacent non-prepared surfaces of the adjacent teeth are scanned based on the first scan to obtain a third scan.

[0101] In this embodiment, the target abutment tooth and its surrounding area are supplemented with a scan based on the first scan to obtain a third scan, which is beneficial to improving the accuracy and reliability of the data and the precision of the restoration design.

[0102] Step S105, determining a target restoration model according to the second scan and the third scan.

[0103] It can be understood that the data of the second scan and the third scan are compared, the difference between the data is identified and corrected, and the target restoration model is constructed.

[0104] Furthermore, if there are many target abutment teeth, the data of the second scan and the third scan may be intercepted in segments to perform segment matching.

[0105] In some embodiments, the second scan is used as a working model and the third scan is used as a reference model. The second scan is combined with the third scan to obtain a first complete model, and the edge position and target parameters of the restoration are determined based on the first complete model; the target restoration model is generated by the design software based on the edge position and target parameters of the restoration.

[0106] The first complete model includes the preparation completion area, the alveolar ridge top position and the gingival margin position, and the target parameters include edge line width, edge horizontal width, edge inclination width, edge inclination angle, edge vertical height and edge line displacement.

[0107] Further, the target restoration model is output as a stereolithography file; and the target restoration is manufactured according to the stereolithography file through a chairside computer-aided manufacturing system.

[0108] In this embodiment, determining the target restoration model based on the second scan and the third scan is helpful to reduce the restoration production time, improve the accuracy of the restoration model, improve the matching of the target abutment tooth and its surrounding structure, optimize the function and aesthetics of the restoration, and reduce the restoration design requirements on the doctor's operational ability.

[0109] In steps S101 to S105 shown in the embodiment of the present application, an original scan is obtained by performing an intraoral scan; the target abutment tooth and its surrounding area of ​​the original scan are deleted to obtain a first scan; based on the first scan, the target abutment tooth and its surrounding area are supplemented with a scan to obtain a second scan; based on the first scan, the target abutment tooth and its surrounding area are supplemented with a scan to obtain a third scan; and the target restoration model is determined based on the second scan and the third scan, which is beneficial to reducing the restoration production time, improving the restoration accuracy, and reducing the restoration design requirements on the doctor's operational ability.

[0110] See also Figure 2 In some embodiments, step S105 may include but is not limited to steps S201 to S203:

[0111] Step S201: Use the second scan as a working model and the third scan as a reference model, merge the second scan and the third scan to obtain a first complete model.

[0112] Specifically, the first complete model includes the preparation completion area, the alveolar crest position and the gingival margin position.

[0113] In step S201 of some embodiments, the second scan and the third scan are input into CAD software, and the second scan is used as a working model and the third scan is used as a reference model.

[0114] Furthermore, a 3D data editor is selected in the CAD software toolbar, and the target abutment and its surrounding area in the third scan are selected through the 3D data editor. The matching grid tool is selected in the toolbar, and multiple marking points (same tooth position and same position) are selected in the second scan and the third scan, respectively, and the best fit is selected in the window to complete the merging of the two digital models of the second scan and the third scan to obtain the first complete model.

[0115] Step S202: determining the restoration edge position and target parameters according to the first complete model.

[0116] Specifically, the target parameters include edge line width, edge horizontal width, edge tilt width, edge tilt angle, edge vertical height, and edge line shift.

[0117] In step S202 of some embodiments, the position of the alveolar ridge crest of the first complete model is used as a reference, and the coronal attachment tissue / biological width is not violated, so that the edge of the restoration is positioned a certain distance away from the bottom of the gingival sulcus.

[0118] Furthermore, after the edge position of the restoration is determined, it is also necessary to adjust parameters such as edge line width, edge horizontal width, edge inclination width, edge inclination angle, edge vertical height and edge line downward movement.

[0119] Step S203, generating a target restoration model according to the restoration edge position and target parameters through design software.

[0120] In step S203 of some embodiments, the positioning path is set; the target crown template in the database is called and the positioning is completed according to the positioning path; the original restoration model is generated by the design software according to the positioning path, the target crown template, the restoration edge position and the target parameters; the morphology, occlusion and adjacent relationship of the original restoration model are adjusted using the morphology adjustment tool to obtain the target restoration model.

[0121] See also Figure 3 In some embodiments, step S203 may include but is not limited to steps S301 to S304:

[0122] Step S301, setting the positioning path.

[0123] In step S301 of some embodiments, the position and direction of the restoration are set through the positioning path in the design software, which helps the restoration to accurately match the prepared part of the tooth.

[0124] Step S302, calling the target full crown template in the database and completing the positioning according to the positioning path.

[0125] Specifically, the database is used to store standard full crown templates for various tooth positions.

[0126] In step S302 of some embodiments, a target full crown template matching the target tooth position is selected from a database and accurately positioned on the preset tooth position, wherein the target tooth position corresponds to the target abutment tooth.

[0127] Among them, the software loads the target full crown template into the tooth model to align the target full crown template with the actual tooth position in three-dimensional space.

[0128] Alternatively, positioning can be achieved by a three-dimensional registration algorithm.

[0129] In this embodiment, the target full crown template in the database is called and the positioning is completed according to the insertion path. The use of standardized templates is conducive to speeding up the design process and reducing the time of manual intervention. At the same time, the template provides a unified design standard, which helps to improve the quality and consistency of the restoration.

[0130] Step S303, generating an original restoration model through design software according to the insertion path, the target crown template, the restoration edge position and the target parameters.

[0131] In step S303 of some embodiments, the design software automatically generates an original restoration model according to the insertion path, the target crown template, the restoration edge position and the target parameters.

[0132] Optionally, the design software generates an original restoration model according to the insertion channel, the target crown template, the restoration edge position and the target parameters through parametric modeling and shape optimization algorithms.

[0133] In this embodiment, the original restoration model is generated by the design software according to the insertion path, the target full crown template, the restoration edge position and the target parameters, which is helpful to speed up the design process, reduce the errors and inconsistencies of human operation, and reduce the operation ability requirements of the doctor for the restoration design.

[0134] Step S304: Use a morphology adjustment tool to adjust the morphology, occlusion and adjacency relationship of the original restoration model to obtain a target restoration model.

[0135] In step S304 of some embodiments, a morphology adjustment tool is used to further adjust the automatically generated original restoration model to optimize the morphology, occlusion and adjacency of the original restoration model, so as to facilitate the personalized appearance of the restoration to meet the actual needs of the patient.

[0136] Optionally, the automatically generated original restoration model can be further adjusted using the move, scale, and rotate tools.

[0137] In this embodiment, the morphology adjustment tool is used to adjust the morphology, occlusion and adjacency of the original restoration model to obtain a target restoration model, which is helpful in meeting the specific needs of patients, improving comfort and functionality, and solving small errors that may exist in the automatically generated model, thereby improving the matching of the restoration.

[0138] Figure 4 is an optional flow chart of the restoration design method provided in the embodiment of the present application, Figure 4 The method may include but is not limited to the following steps.

[0139] Step 1, preoperative evaluation.

[0140] In some embodiments, after preoperative evaluation of the overall abutment tooth (tooth periodontal condition) and the abutment tooth margin (aesthetic position, biological position, preparation form and details), it is determined that periodontal flap surgery and vertical tooth preparation can be performed simultaneously without changing the aesthetic position.

[0141] Step 2, data preparation: Use an intraoral digital scanner to perform intraoral scans of the patient's upper and lower jaw dentition and occlusion to form a scan 1 as baseline data. Use the editing or cutting tools on the scanning interface to delete the data of the target abutment and its surrounding area for repeated use in subsequent operation processes.

[0142] Among them, scan 1 is the original scan, and scan 1 with data of the target abutment tooth and its surrounding area deleted is the first scan.

[0143] For example, the maxillary dentition diagram of the original scan is as follows: Figure 5 The original scan of the mandibular dentition is shown in Figure 6 As shown, the occlusal relationship diagram of the original scan is as follows Figure 7 As shown in the figure, the schematic diagram of deleting the target abutment is as follows Figure 8 shown.

[0144] Step 3: Perform vertical tooth preparation during periodontal flap surgery.

[0145] In some embodiments, during flap surgery, a bur with a flame-shaped tip is used under direct vision to perform vertical tooth preparation, remove the original overly wide and deep shoulders, and perform step-by-step polishing to form a smooth, continuous, and flexible preparation edge completion area.

[0146] For example, the vertical tooth preparation diagram is as follows Fig. 9 shown.

[0147] Step 4: Suture to stop bleeding.

[0148] Step 5, the target abutment tooth and its surrounding area are scanned to form a scan 2. The key scanning areas include: the entire preparation, the edge completion area of ​​the preparation, the position of the alveolar ridge top of the root of the preparation, and the adjacent surface of the adjacent tooth that is not the preparation.

[0149] In some embodiments, after the tooth preparation is completed and before suturing, the deleted target abutment tooth and its surrounding area are re-scanned on the basis of scan 1 (i.e., the first scan) to form scan 2 (i.e., the second scan). When re-scanning, the key areas include: the entire preparation, the edge completion area, the position of the root alveolar ridge top, and the adjacent surfaces of the adjacent teeth. In this process, liquid seepage in the key areas needs to be strictly controlled to ensure that the optical information of the key areas is fully collected. Since scan 2 can accurately obtain a clear position of the entire preparation, the edge completion area and the root alveolar ridge top, it serves as the main working impression in the restoration production process and plays a vital role in the design and production of the restoration.

[0150] For example, the second scan diagram is as follows: Fig.10 shown.

[0151] Step 6: Scan the target abutment tooth and its surrounding area to form scan 3. The key scanning areas include: the entire preparation, the edge of the preparation and its gingival margin, and the adjacent surface of the adjacent tooth that is not the preparation.

[0152] In some embodiments, after the gingival tissue of the surgical area is repositioned and sutured and the bleeding is fully stopped, the deleted target abutment tooth and its surrounding area are scanned again on the basis of scan 1 to form scan 3 (i.e., the third scan). During the scan, the key areas include: the entire preparation, the area where the edge of the partial preparation is completed and its gingival margin position, and the adjacent surfaces of the adjacent teeth.

[0153] Unlike Scan 2, the gingival tissue in Scan 3 covers the alveolar ridge top and part of the prepared edge completion area, and cannot provide a direct reference for the production of the restoration. In addition, the gingival tissue will also change during the healing process under the guidance of the restoration. Therefore, Scan 3 is used as a reference impression in the restoration production process, which only provides a certain reference for the design and production of the restoration.

[0154] For example, the third scan diagram is as follows: Fig.11 shown.

[0155] Step 7, data input and processing: Input the data of scan 2 and scan 3 into EXOCAD software to form model 2 and model 3, which are used as working model and reference model respectively. Use the alignment tool to merge the two models together to form a complete model that can clearly identify the completed area of ​​the preparation, the position of the alveolar crest, and the position of the gingival margin.

[0156] In some embodiments, the data of scan 2 and scan 3 are input into EXO CAD software, where scan 2 is used as a working model and scan 3 is used as a reference model. Because there are many target abutment teeth in this case, the target abutment teeth and their surrounding areas in scan 3 are intercepted in three sections and matched with scan 2 in sections. The three sections are: the natural teeth at the end of the maxillary right dental arch to the target abutment teeth and the surrounding areas, the target abutment teeth and their surrounding areas, and the natural teeth at the end of the maxillary left dental arch to the target abutment teeth and their surrounding areas. Select the 3D data editor in the EXOCAD software toolbar, and select the target abutment teeth and their surrounding areas in scan 3. Select the matching grid tool in the toolbar, select multiple marking points (same tooth position and same position) in scan 2 and scan 3 respectively, select the best fit in the window, complete the merger of the two digital models of scan 2 and scan 3, and form a complete model (i.e., the first complete model) that can clearly identify the completed area of ​​the preparation, the position of the alveolar ridge top, and the position of the gingival margin.

[0157] It is understandable that if there are many target abutments, the target abutments and their surrounding areas in the scan 3 can be segmented and matched with the scan 2 in segments.

[0158] For example, the target abutment tooth and its surrounding area to be merged in the first segment of the scan 3 are selected as shown in FIG. Fig.12 As shown; the target abutment tooth and its surrounding area to be merged in the second segment of scan 3 are selected as shown in the figure Fig.13 As shown; the target abutment tooth and its surrounding area to be merged in the third segment of scan 3 are selected as shown in the figure Fig.14 The dark part indicates the selected target abutment tooth and its surrounding area.

[0159] Further, the first segment of the target abutment tooth and its surrounding area to be merged in the scan 3 is intercepted as shown in FIG. Fig.15 As shown; the schematic diagram of the target abutment and its surrounding area to be merged in the second section of scan 3 is as follows Fig.16 As shown; the schematic diagram of the target abutment and its surrounding area to be merged in the third section of scan 3 is as follows Fig.17 shown.

[0160] In some embodiments, the matching grid tool is selected in the tool bar, and multiple marking points (same tooth position and same location) are selected in Scan 2 and Scan 3 respectively.

[0161] For example, a schematic diagram of selecting multiple marking points in the first scan 2 and the scan 3 is as follows: Fig.18 As shown; the schematic diagram of selecting multiple marking points in the second scan 2 and scan 3 is as follows Fig.19 As shown; the schematic diagram of selecting multiple marking points in the third scan 2 and scan 3 is as follows Fig. 20 shown.

[0162] In some embodiments, the best fit is selected in the window to complete the merging of the two digitized models of Scan 2 and Scan 3 .

[0163] For example, the first complete model schematic diagram of the first section is as follows: Fig.21 As shown; the first complete model schematic diagram of the second section is as follows Fig. 22 As shown; the first complete model schematic diagram of the third section is as follows Fig.23 As shown in the figure. Among them, blue indicates that the two models have the best fit, and red indicates that the two models have poor fit.

[0164] Step 8, edge marking and parameter determination of the restoration: Draw the edge line of the restoration at least 2.5 mm away from the top of the alveolar ridge, and set parameters such as edge width, horizontal edge width, edge inclination width, edge inclination angle, edge vertical height and edge line downward movement.

[0165] In some embodiments, with the position of the alveolar ridge crest as a reference and the coronal attachment tissue / biological width (including connective tissue 1.07 mm and junctional epithelium 0.97 mm, approximately 2 mm) not violated as the boundary, the edge of the restoration is positioned at least 0.5 mm from the bottom of the gingival sulcus and within 0.8 mm below the gingival margin.

[0166] Furthermore, the restoration edge is set at least 2.5mm away from the crown of the alveolar ridge (biological width 2mm + minimum distance of the restoration edge from the gingival sulcus bottom 0.5mm), and the restoration edge position is adjusted to be within 0.8mm below the gingival margin. After the restoration edge position is determined, it is also necessary to adjust the edge line width, edge horizontal width, edge tilt width, edge tilt angle, edge vertical height and edge line downward to form a precise and close-fitting restoration edge with good morphology.

[0167] For example, the schematic diagram of determining the restoration edge according to the alveolar ridge top position is as follows: Fig.24 As shown; the relationship between the restoration edge and the gingival margin and alveolar ridge top is shown in Fig.25 As shown; the schematic diagram of parameter determination is as follows Fig.26 As shown. Among them, the restoration margin line is drawn according to the position of the alveolar ridge top and the gingival margin, and the parameters such as the margin width, the margin horizontal width, the margin inclination width, the margin inclination angle, the margin vertical height and the margin line downward displacement (i.e., the target parameters) are set.

[0168] Step 9: Design of restoration morphology.

[0169] In some embodiments, the positioning path is set, the standard full crown template corresponding to the tooth position in the database is called and the positioning is completed.

[0170] Furthermore, after the design software automatically generates the restoration according to the set parameters, the morphology, occlusion and adjacent relationships are manually adjusted using the morphology adjustment tool to form an ideal personalized restoration shape (ie, the target restoration model).

[0171] For example, the schematic diagram of the target restoration model is as follows: Fig. 27 shown.

[0172] Step 10: The restoration is cut and manufactured using the chairside CAM system.

[0173] Among them, the chairside CAM system is the chairside computer-aided manufacturing system.

[0174] In some embodiments, the designed restoration is exported as an STL file, and the chairside CAM system cuts and manufactures the restoration (ie, the target restoration).

[0175] Exemplarily, the target restoration schematic diagram is as follows Fig.28 shown.

[0176] See also Fig.29 The present application also provides a restoration design device that can implement the above restoration design method. The device includes:

[0177] The original scanning module 2901 is used to perform intraoral scanning to obtain an original scan;

[0178] A deletion module 2902 is used to delete the target abutment and its surrounding area from the original scan to obtain a first scan;

[0179] A first re-scanning module 2903 is used to re-scan the target abutment tooth and its surrounding area based on the first scan to obtain a second scan;

[0180] A second supplementary scanning module 2904 is used to supplement the target abutment tooth and its surrounding area based on the first scan to obtain a third scan;

[0181] The model determination module 2905 is used to determine the target restoration model according to the second scan and the third scan.

[0182] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0183] The embodiment of the present application also provides an electronic device, the electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements the above-mentioned restoration design method when executing the computer program. The electronic device can be any intelligent terminal including a tablet computer, a car computer, etc.

[0184] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0185] See also Fig.30 , Fig.30 The hardware structure of an electronic device of another embodiment is illustrated, and the electronic device includes:

[0186] The processor 3001 may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application;

[0187] The memory 3002 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 3002 can store an operating system and other application programs. When the technical solution provided in the embodiment of this specification is implemented by software or firmware, the relevant program code is stored in the memory 3002, and the processor 3001 calls and executes the restoration design method of the embodiment of this application;

[0188] Input / output interface 3003, used to implement information input and output;

[0189] Communication interface 3004, used to realize communication interaction between the device and other devices, which can be realized through wired mode (such as USB, network cable, etc.) or wireless mode (such as mobile network, WI FI, Bluetooth, etc.);

[0190] A bus 3005 that transmits information between various components of the device (e.g., the processor 3001, the memory 3002, the input / output interface 3003, and the communication interface 3004);

[0191] The processor 3001 , the memory 3002 , the input / output interface 3003 and the communication interface 3004 are connected to each other in communication within the device via the bus 3005 .

[0192] An embodiment of the present application also provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the above-mentioned restoration design method is implemented.

[0193] It can be understood that the contents of the above method embodiments are all applicable to the present storage medium embodiments, the functions specifically implemented by the present storage medium embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0194] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0195] The restoration design method, restoration design device, electronic device and storage medium provided in the embodiments of the present application obtain an original scan by performing an intraoral scan; deleting the target abutment tooth and its surrounding area of ​​the original scan to obtain a first scan; performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a second scan; performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a third scan; and determining a target restoration model based on the second scan and the third scan, which is beneficial to reducing the restoration production time, improving the restoration accuracy, and reducing the restoration design requirements on the doctor's operational ability.

[0196] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0197] Those skilled in the art will appreciate that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0198] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0199] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0200] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0201] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0202] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0203] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0204] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0205] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including multiple instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store programs.

[0206] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the rights of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention should be within the scope of the rights of the present invention.

Claims

1. A restoration design method, characterized in that: The method comprises the following steps: Perform intraoral scanning to obtain the original scan; Deleting the target abutment tooth and its surrounding area from the original scan to obtain a first scan; Performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a second scan; Performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a third scan; A target restoration model is determined according to the second scan and the third scan.

2. The method according to claim 1, characterized in that: The method further comprises: Perform vertical tooth preparation to create a finished area of ​​the preparation margin.

3. The method according to claim 1, characterized in that The target abutment tooth and its surrounding area include the entire preparation, the edge completion area of ​​the preparation, the position of the alveolar ridge top of the root of the preparation, and the adjacent surface of the adjacent tooth that is not the preparation. The method of performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a second scan includes: Based on the first scan, the entire preparation, the edge completion area of ​​the preparation, the position of the alveolar ridge top of the root of the preparation, and the adjacent surface of the adjacent tooth that is not a preparation are scanned to obtain a second scan.

4. The method according to claim 2, characterized in that: The target abutment tooth and its surrounding area include the entire preparation body, the edge completion area of ​​the partial preparation body and its gingival margin position and the adjacent surface of the adjacent tooth non-preparation body. The method of performing a supplementary scan on the target abutment tooth and its surrounding area based on the first scan to obtain a third scan includes: Based on the first scan, the entire prepared body, the edge completion area of ​​the partial prepared body and its gingival margin position and the adjacent surface of the adjacent tooth non-prepared body are scanned to obtain a third scan.

5. The method according to claim 1, characterized in that The step of determining a target restoration model according to the second scan and the third scan includes: The second scan is used as a working model and the third scan is used as a reference model, and the second scan is combined with the third scan to obtain a first complete model, wherein the first complete model includes a preparation completion area, a position of an alveolar crest, and a position of a gingival margin; Determine the restoration edge position and target parameters according to the first complete model, wherein the target parameters include edge line width, edge horizontal width, edge tilt width, edge tilt angle, edge vertical height and edge line displacement; The target restoration model is generated by design software according to the restoration edge position and the target parameters.

6. The method according to claim 5, characterized in that The step of generating a target restoration model according to the restoration edge position and the target parameters by design software includes: Set the road in place; Calling the target full crown template in the database and completing the positioning according to the positioning path; Generate an original restoration model according to the insertion path, the target crown template, the restoration edge position and the target parameters by design software; The morphology, occlusion and adjacency relationship of the original restoration model are adjusted using a morphology adjustment tool to obtain a target restoration model.

7. The method according to claim 1, characterized in that The method further comprises: Outputting the target restoration model as a stereolithography file; The target restoration is manufactured according to the stereolithography file by a chairside computer-aided manufacturing system.

8. A restoration design device, characterized in that: The device comprises: The original scanning module is used to perform intraoral scanning to obtain the original scanned copy; A deletion module, used for deleting the target abutment and its surrounding area from the original scan to obtain a first scan; A first supplementary scanning module, configured to supplementary scan the target abutment tooth and its surrounding area based on the first scan to obtain a second scan; A second supplementary scanning module is used to supplement the target abutment tooth and its surrounding area based on the first scan to obtain a third scan; A model determination module is used to determine a target restoration model according to the second scan and the third scan.

9. An electronic device, characterized in that: The electronic device comprises a memory and a processor, the memory stores a computer program, and the processor implements the method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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