Generation method, device and application of implant substitute integrated model

Abstract

The invention discloses a method and a device for generating an implant substitute integrated model and application. The method comprises the following steps: acquiring intraoral optical impression data of a patient; on the basis of acquired intraoral optical impression data of the patient, registering the substitute digital model and an optical scanning rod to obtain a three-dimensional position of the substitute digital model, and then calling substitute appearance data of the same model as the intraoral implant to virtually reproduce the three-dimensional position of the intraoral implant; and based on the three-dimensional position of the intraoral implant obtained through virtual reproduction, generating an implant substitute integrated model after applying an implant substitute digital model containing internal threads, ports and appearance. Computer-aided manufacturing equipment is used, the integrated dental model is subjected to 3D printing in an additive manufacturing mode, and it is ensured that the substitute digital model accurately restores the three-dimensional position of the actual implant. According to the invention, angle deviation and displacement caused by rotation and sliding of the finished product substitute body in the process of manually returning to the model can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to the field of oral implant restoration, and in particular to a method, device and application of generating an integrated model of an implant substitute. Background Art

[0002] Tooth loss and tooth loss are the most common oral diseases. They not only weaken the patient's chewing function and affect the appearance, but may also cause secondary oral damage, such as oral mucosal damage, tilting and displacement of adjacent teeth, etc., which cause great harm to the patient's physical and mental health and greatly affect the patient's quality of life. The current restoration methods mainly include implant denture restoration, removable denture restoration and traditional fixed bridge restoration.

[0003] In the past, clinical implant restoration mostly used polyether silicone rubber to make impressions, and used plaster perfusion to form models. Metal implant substitutes simulated the three-dimensional position of the bone implant in the model to meet the needs of the upper restoration production process. In traditional implant restoration technology, due to the manual resetting of the finished substitute, rotational offset problems often occur, resulting in inaccurate restoration position. In recent years, with the continuous advancement of optical scanning technology, the accuracy of optical digital impressions has been continuously improved. Due to its fast transmission speed and convenient storage, digital impression technology is now widely used in the treatment process of oral implant restoration.

[0004] When using digital impressions to make restorations, technicians need to use the substitute appearance data model in computer-aided design (CAD) software to simulate the three-dimensional position of the implant, reserve the reset hole of the finished substitute and complete the model editing and design, transfer the data to the computer-aided manufacturing equipment 3D printing model, and then reposition the finished substitute in the reserved hole on the model. However, in the process of manually resetting the finished substitute, it is very easy to cause the substitute to rotate or shift, resulting in the three-dimensional position of the finished substitute not matching the three-dimensional position of the actual implant in the patient's jaw, thus affecting the final clinical restoration effect. Especially when the patient needs to undergo implant bridge restoration, any of the above errors in the finished substitute may result in the inability to complete clinical tooth wearing after the implant restoration is delivered to the clinic, requiring a second impression to be made and the restoration to be returned to the factory for remaking. This not only increases the number of visits for patients and prolongs the diagnosis and treatment cycle of patients, but also causes a certain amount of resource waste, such as time and materials. Therefore, exploring new methods for applying substitutes to reduce errors such as angle deviation is of great significance for improving clinical efficacy. Summary of the invention

[0005] The purpose of the present invention is to provide a method for generating an integrated model of an implant substitute, which uses a digital model of the substitute to align with a scanning rod to simulate an intrabone implant to generate an integrated model of the implant substitute, and performs 3D printing to reduce or avoid rotational deviation in the application of the finished substitute, reduce the clinical rework rate, and improve clinical efficacy.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A first aspect provides a method for generating an integrated model of an implant substitute, comprising:

[0008] Acquiring intraoral optical impression data of a patient, wherein an optical scanning rod is installed in the patient's mouth;

[0009] Based on the intraoral optical impression data of the patient, the digital model of the substitute is registered with the optical scanning rod to obtain the three-dimensional position of the digital model of the substitute, and then the appearance data of the substitute of the same model as the intraoral implant is called to virtually reproduce the three-dimensional position of the intraoral implant;

[0010] Based on the three-dimensional position of the intraoral implant obtained by virtual reproduction, and using the digital model of the implant substitute containing internal threads, port structure and appearance morphology, an integrated model of the implant substitute is generated.

[0011] In one embodiment, the inner diameter, port structure, and appearance parameters of the integrated model of the implant substitute match the restoration base of the implant system.

[0012] In one embodiment, the pitch and diameter of the internal thread of the digital model of the replacement in the integrated model of the implant replacement match those of the technician screw of the implant system.

[0013] In one embodiment, the pitch and diameter of the internal thread of the digital model of the replacement body in the integrated model of the implant replacement body match the repair screws of the implant system.

[0014] In one embodiment, the method further comprises:

[0015] Edit and design the three-dimensional structure of the gums around the digital model of the replacement in the integrated model of the implant replacement;

[0016] Edit the model base, add jaw frame and model information labels;

[0017] The editing information of the integrated model of the implant substitute is transmitted to the printing device for 3D printing to obtain an integrated model including the internal threads and port structure of the implant substitute.

[0018] In one embodiment, based on the acquired intraoral optical impression data of the patient, the digital model of the substitute is registered with the optical scanning rod to obtain the three-dimensional position of the digital model of the substitute, including:

[0019] Import the acquired intraoral optical impression data of the patient into the computer-aided design software, and retrieve the scanning rod data of the corresponding model in the design software;

[0020] Select the three common corner points of the scanning rod in the optical impression and the virtual scanning rod of the corresponding model in the design software in different planes, use spatial three-point positioning for initial alignment and fitting, and obtain the three-dimensional position of the digital model of the substitute.

[0021] In one embodiment, calling the appearance data of a substitute of the same model as the intraoral implant to virtually reproduce the three-dimensional position of the intraoral implant includes:

[0022] The replacement volume data containing appearance data such as height, diameter and shape of the same model as the intraoral implant is called up, matched with the virtual scanning rod data, and the virtual reproduction of the three-dimensional position of the intraoral implant is obtained.

[0023] Based on the same inventive concept, the second aspect of the present invention provides a device for generating an integrated model of an implant substitute, comprising:

[0024] An optical impression data acquisition module is used to acquire the optical impression data in the patient's mouth, wherein an optical scanning rod is installed in the patient's mouth;

[0025] A position registration module is used to register the digital model of the substitute with the optical scanning rod based on the acquired intraoral optical impression data of the patient, obtain the three-dimensional position of the digital model of the substitute, and then call the appearance data of the substitute of the same model as the intraoral implant to virtually reproduce the three-dimensional position of the intraoral implant;

[0026] The appearance data application module is used to generate an integrated model of the implant substitute based on the three-dimensional position of the intraoral implant obtained by virtual reproduction and the digital model of the implant substitute containing internal threads, port structure and appearance morphology.

[0027] Based on the same inventive concept, the third aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for generating an integrated model of an implant substitute as described in the first aspect.

[0028] Based on the same inventive concept, the fourth aspect of the present invention provides an application of an integrated model of an implant substitute, wherein the integrated model containing the implant substitute structure obtained in the first aspect is applied to oral implantation.

[0029] Compared with the prior art, the advantages and beneficial technical effects of the present invention are as follows:

[0030] The invention provides a method for generating an integrated model of an implant substitute, which first obtains the three-dimensional position relationship of the implant in the patient's mouth, and aligns the digital model of the substitute with the optical scanning rod, and then uses a multi-point registration technology to accurately virtually reproduce the three-dimensional position of the implant in the bone, and then uses the digital model of the implant substitute containing internal threads, port structures and appearance morphology to generate an integrated model of the implant substitute. This can effectively solve the problem of rotational offset of the finished substitute in the prior art method when the model is manually reset after printing, and avoid the situation where the digital impression implant crown restoration cannot be placed in place.

[0031] Furthermore, compared with the traditional method, this method also performs 3D printing on the integrated model of the implant substitute, which can completely replace the key link in the traditional digital impression model production method, that is, the manual resetting process of the finished substitute. Its process parameters are easy to control, and the three-dimensional position of the intrabone implant is accurately reproduced, which improves the accuracy of the implant restoration, reduces the possibility of chairside operation and rework, shortens the treatment cycle, and significantly improves the clinical effect and patient satisfaction. The original method only uses the dental mold of the implant substitute appearance design, performs 3D printing, and then manually returns the finished metal substitute to the reserved hole. This process will inevitably produce rotation or displacement, which will cause the finished substitute to be unable to accurately reproduce the three-dimensional position of the intrabone implant, and then the produced implant restoration cannot be installed in the patient's mouth, affecting the clinical diagnosis and treatment effect. The method provided by the present invention integrates and optimizes the digital impression data and the digital model data of the implant replacement body containing internal threads, port structures, and appearance morphology, makes full use of CAD software and optimizes and integrates multiple technical processes, so that the repair base is directly connected to the integrated model, rather than the indirect method used in the prior art, that is, first resetting the finished metal replacement body to the tooth mold, and then connecting the repair base to the finished metal replacement body. The repair base in this indirect method will change synchronously with the inaccurate resetting of the finished metal replacement body. The production and manufacture of implant restorations based on the integrated model prepared by the present invention can transform the relationship between the implant restoration base and the tooth model from the indirect connection of the traditional method to a direct connection. Whether it is to make a single implant crown restoration or an implant bridge restoration supported by multiple implants, the possibility of rotational offset or displacement when using the finished replacement body can be avoided. At the same time, the accuracy of the implant restoration finally produced is effectively improved, and the possibility of operations such as adding porcelain, shaping, and even rework by the chairside technician is reduced, which saves chairside operation time, reduces the number of patient visits, shortens the patient's diagnosis and treatment cycle, improves clinical efficacy, and improves patient satisfaction.

[0032] In the future, it can be further combined with big data and intelligent manufacturing to realize personalized treatment plans such as automated restoration abutment design and crown design, providing certain support for promoting the digital development of oral implant restoration diagnosis and treatment processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A flow chart of a method for generating an integrated model of an implant substitute provided in an embodiment of the present invention;

[0035] Figure 2 This is a specific application flow chart of the integrated model of implant substitutes in an embodiment of the present invention;

[0036] Figure 3 Schematic diagram of installing a scanning rod in a patient's mouth according to an embodiment of the present invention, wherein the left side is a schematic diagram of the patient's mouth, and the right side is a schematic diagram of the scanning rod after it is installed in the patient's mouth;

[0037] Figure 4 A side view of a scanned computer-aided drawing (CAD) model of a tooth and a scanbar in an embodiment of the present invention;

[0038] Figure 5 for Figure 4 Schematic diagram of the registration using computer-aided design software applied in the process;

[0039] Figure 6 for Figure 5 A side view of the registered CAD model, with a cross-section showing the scanboom data model and CAD model fit check;

[0040] Figure 7 To add the following examples in the computer-aided design software system Figure 6 Side view of the CAD model of the analog appearance data matching the middle scan body, which highlights that the appearance analog simulates the three-dimensional position and orientation of the implant relative to the tooth;

[0041] Figure 8 To add the following examples in the computer-aided design software system Figure 6 CAD model of the restoration abutment that matches the appearance data of the analog in the figure, highlighting the relationship between the abutment edge and the model gingiva;

[0042] Fig. 9 is a schematic diagram of a digital model of a substitute, wherein the left side is a perspective view of the digital model of a substitute required for application according to the example, and the right side is a plan view of the digital model of a substitute required for application according to the example, wherein parameters such as port shape, diameter, and internal thread match the model of the patient's intraosseous implant;

[0043] Fig.10 According to the example Fig. 9 After the digital model data of the substitute shown is imported into the computer-aided design software, the side view of the integrated CAD model obtained by selecting to replace the original substitute appearance data model is highlighted, in which the internal thread structure of the digital model of the substitute applied in this example is highlighted;

[0044] Fig.11 The size and position of the gum glue and the CAD model perspective view of the jaw frame are designed according to the example in the embodiment of the present invention, in which the Fig.10 The position of the digital model of the surrogate is shown;

[0045] Fig.12 CAD model structure diagram for completing layout design based on examples;

[0046] Fig.13 A physical picture of a 3D printed implant replacement integrated model according to an example;

[0047] Fig.14 The detailed picture of the integrated model and the implant substitute contained therein according to the example, in which the interface shape and internal thread of the integrated model substitute are highlighted;

[0048] Fig.15 A diagram of the steps of making an implant restoration using an integrated model according to an example, showing the steps of grinding abutments using the integrated model, making crowns by subtracting materials, and adjusting adjacent occlusions by trial fitting;

[0049] Fig.16 Occlusal diagram of the implant restoration made according to the application integrated model after clinical diagnosis and treatment;

[0050] Fig.17 It is a three-dimensional modeling diagram and perspective view of the integrated model of the 3D printed implant substitute in an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In view of the problems existing in the prior art, the present invention designs and implements a method for 3D printing an integrated model of an implant substitute based on the principle of using digital impressions to design and manufacture restorations. By integrating the patient's optical impression data with a digital model of an implant substitute containing internal threads and a port structure, and screening and using model resin materials that meet the precision and low system shrinkage rate, not only can the rotation and displacement of the finished substitute during the reduction process be effectively avoided, but the model accuracy can also be improved, the chance of chairside adjustment and rework can be reduced, and the chairside operation time can be reduced, which is more conducive to improving clinical efficacy and enhancing patient satisfaction.

[0052] The key points of the technical solution of the present invention are to use an intraoral scanner and an optical scanning rod to obtain the three-dimensional position relationship of the patient's intraoral implant, align the digital model of the substitute and the optical scanning rod on the computer-aided design (CAD) software, and use multi-point alignment technology to accurately virtually reproduce the three-dimensional position of the intrabone implant. Then, use computer-aided manufacturing (CAM) equipment to 3D print an integrated model through additive manufacturing to ensure that the digital model of the substitute accurately restores the three-dimensional position of the actual implant. That is, through the high-precision alignment of the optical scanning rod and the digital model of the substitute, seamless connection between the data is ensured, thereby achieving complete consistency between the virtual model and the actual implant position. This method can effectively avoid the angular offset and displacement caused by the rotation and sliding of the finished substitute during the process of artificial return to the model, and can accurately and reliably reproduce the three-dimensional position of the patient's intraoral implant in the integrated model, reduce the rework rate of the restoration, and effectively improve the clinical diagnosis and treatment effect of oral implants.

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] Embodiment 1

[0055] The present invention discloses a method for generating an integrated model of an implant substitute, see Figure 1 , the method comprising:

[0056] S1: Acquiring intraoral optical impression data of a patient, wherein an optical scanning rod is installed in the patient's mouth;

[0057] S2: Based on the acquired intraoral optical impression data of the patient, the digital model of the substitute is registered with the optical scanning rod to obtain the three-dimensional position of the digital model of the substitute, and then the appearance data of the substitute of the same model as the intraoral implant is called to virtually reproduce the three-dimensional position of the intraoral implant;

[0058] S3: Based on the three-dimensional position of the intraoral implant obtained by virtual reproduction, and using the digital model of the implant substitute containing internal threads, port structure and appearance morphology, an integrated model of the implant substitute is generated.

[0059] In the specific implementation process, step S1 can use an oral optical scanner to scan and obtain the patient's intraoral optical impression; the patient's intraoral optical impression data includes data such as dentition, implant scanning rod shape and orientation, upper and lower jaw occlusion relationship, etc. The substitute appearance data includes appearance morphology, size such as height, diameter, etc. The digital model in S3 refers to the system's original digital model with only substitute appearance data, which is a digital model that matches the actual implant.

[0060] In one embodiment, the method further comprises:

[0061] Edit and design the three-dimensional structure of the gums around the digital model of the replacement in the integrated model of the implant replacement;

[0062] Edit the model base, add jaw frame and model information labels;

[0063] The editing information of the integrated model of the implant substitute is transmitted to the printing device for 3D printing to obtain an integrated model containing the implant substitute structure.

[0064] Specifically, the digital model of the substitute is aligned with the scanning rod in the digital impression to simulate the intraosseous implant, and then 3D printing is performed to obtain an integrated model of the implant substitute containing internal threads and port structures.

[0065] The 3D printing model material selection should meet the restoration processing process to achieve the expected clinical effect, such as Micro301Red Wax, Micro 201ABS and other high-precision, high-strength, low-system shrinkage 3D printing resin materials.

[0066] The obtained integrated model of implant substitute is a dental model and substitute that are modeled and 3D printed simultaneously. Specifically, computer-aided manufacturing (CAM) equipment is used to 3D print an integrated dental model through additive manufacturing to ensure that the digital model of the substitute accurately restores the three-dimensional position of the actual implant. That is, through the high-precision registration of the optical scanning rod and the digital model of the substitute, seamless connection between the data is ensured, thereby achieving complete consistency between the virtual model and the actual implant position.

[0067] 3D printed integrated implant replacement models should use high-precision, high-strength, low system shrinkage, and strong creep resistance 3D printing resin materials to accurately restore the real situation in the oral cavity; and ensure that the creep ratio of the thread morphology in the implant replacement is small within the production time period of the implant restoration to obtain clinically satisfactory implant restorations.

[0068] In one embodiment, based on the acquired intraoral optical impression data of the patient, the digital model of the substitute is registered with the optical scanning rod to obtain the three-dimensional position of the digital model of the substitute, including:

[0069] Import the acquired intraoral optical impression data of the patient into the computer-aided design software, and retrieve the scanning rod data of the corresponding model in the design software;

[0070] Select the three common corner points of the scanning rod in the optical impression and the virtual scanning rod of the corresponding model in the design software in different planes, use spatial three-point positioning for initial alignment and fitting, and obtain the three-dimensional position of the digital model of the substitute.

[0071] Specifically, when using spatial three-point positioning to perform initial alignment and fitting of the virtual scanning rod-substitute digital model and the optical scanning rod, the data point cloud of the two uses the iterative closest point (ICP) algorithm to minimize the distance between the corresponding points in the source model (optical scanning rod) and the target model (virtual scanning rod-substitute digital model). Through multiple iterations, the models will be automatically aligned, thereby virtualizing the precise position of the substitute digital model in space, refining the alignment results and improving the alignment accuracy.

[0072] In one embodiment, calling the appearance data of a substitute of the same model as the intraoral implant to virtually reproduce the three-dimensional position of the intraoral implant includes:

[0073] The height, diameter and shape of the substitute in vitro of the same model as the intraoral implant are called up, matched with the virtual scanning rod data, and the virtual reproduction of the three-dimensional position of the intraoral implant is obtained.

[0074] Specifically, the height, diameter, and shape of the return channel of the finished metal implant substitute are consistent with those of the finished metal substitute. The virtual scanning rod data is matched to obtain a virtual reproduction of the three-dimensional position relationship of the intraoral implant, thereby initially forming a working model.

[0075] Then, the digital model of the replacement body containing the internal thread and port morphology is imported into the CAD software database. The digital model of the implant replacement body containing the internal thread, port structure, and appearance is selected and applied to replace the digital model of the replacement body with only the appearance and size in the original system, and the integrated model of the implant replacement body is initially generated.

[0076] In general, the present invention provides a method for 3D printing an editable integrated model of an implant substitute. After using a traditional digital impression and aligning the digital model of the implant substitute containing internal threads and port structures with an optical scanning rod to accurately simulate the three-dimensional position of the patient's intrabone implant, the implant substitute data containing internal threads and port structures are reintegrated with the traditional digital model into an integrated model through computer-aided design (CAD), and transmitted to a computer-aided manufacturing (CAM) device to obtain an integrated model of the implant substitute through additive manufacturing.

[0077] The purpose of using the digital model of the implant substitute to match the scanning rod in the present invention is to avoid the angle deviation error caused by the operation of manually resetting the finished substitute through printing and integrated molding, thereby affecting the accuracy of the implant restoration.

[0078] Embodiment 2

[0079] Based on the same inventive concept, this embodiment discloses a device for generating an integrated model of an implant substitute, comprising:

[0080] An optical impression data acquisition module is used to acquire the optical impression data in the patient's mouth, wherein an optical scanning rod is installed in the patient's mouth;

[0081] A position registration module is used to register the digital model of the substitute with the optical scanning rod based on the acquired intraoral optical impression data of the patient, obtain the three-dimensional position of the digital model of the substitute, and then call the appearance data of the substitute of the same model as the intraoral implant to virtually reproduce the three-dimensional position of the intraoral implant;

[0082] The appearance data application module is used to generate an integrated model of the implant substitute based on the three-dimensional position of the intraoral implant obtained by virtual reproduction and the digital model of the implant substitute containing internal threads, port structure and appearance morphology.

[0083] Since the device introduced in the second embodiment of the present invention is a device used to implement the method for generating an integrated model of an implant substitute in the first embodiment of the present invention, based on the method introduced in the first embodiment of the present invention, a person skilled in the art can understand the specific structure and deformation of the device, so it is not described here in detail. All devices used in the method in the first embodiment of the present invention belong to the scope of protection of the present invention.

[0084] Embodiment 3

[0085] Based on the same inventive concept, the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method described in the first embodiment is implemented.

[0086] Since the computer-readable storage medium introduced in the third embodiment of the present invention is the computer-readable storage medium used to implement the method for generating an integrated model of an implant substitute in the first embodiment of the present invention, based on the method introduced in the first embodiment of the present invention, those skilled in the art can understand the specific structure and deformation of the computer-readable storage medium, so it is not repeated here. All computer-readable storage media used in the method of the first embodiment of the present invention belong to the scope of protection of the present invention.

[0087] Embodiment 4

[0088] The present invention also provides an application of an integrated model of an implant substitute, wherein the integrated model containing the implant substitute structure obtained in Example 1 is applied to oral implant restoration.

[0089] During the specific implementation process, the implant restoration production process is as follows:

[0090] After selecting the implant restoration abutment that matches the implant model, install it on the integrated model and grind the restoration abutment according to the patient's gum morphology and occlusal relationship;

[0091] After the implant restoration abutment is ground, the integrated model and its restoration abutment are scanned using a warehouse scanner, and the data is imported into the design software to design the crown;

[0092] The crown design data is transmitted to the corresponding CNC machine tool for cutting the crown, after which the technician trims the shape and sinters it to obtain an implant crown restoration;

[0093] The implant crown restoration is placed on the implant restoration base on the integrated model, the adjacent and occlusal relationships are checked and adjusted, the crown restoration is polished, disinfected, and then delivered to the clinic.

[0094] Among them, the model is used to avoid the impact of angular rotation or displacement of the finished replacement body when it is artificially returned to the traditional digital model during the oral implant restoration process, which may affect the clinical diagnosis and treatment effect, and at the same time reduce the rework rate of the restoration parts.

[0095] See also Figure 2 , is a specific application flow chart of the implant substitute integrated model in the embodiment of the present invention, including the following steps: obtaining a digital model, scanning volume data fitting and registration, substitute volume data fitting and registration, integrated model integration, adding additional information to the model, 3D printing integrated model, restoration production, and clinical trial wearing and adjustment. Please refer to Fig.17 , which are the three-dimensional modeling diagram and perspective diagram of the integrated model of the 3D printed implant substitute in an embodiment of the present invention.

[0096] The specific application of the present invention is described below by using a 3D printed implant substitute integrated model to produce a lower left first molar implant crown restoration.

[0097] The application method of the implant substitute integrated model described in this embodiment comprises the following steps:

[0098] (1) After removing the implant healing abutment in the patient's mouth, install the optical scanning rod ( Figure 3 ), use an oral optical scanner to make an optical impression of the patient's mouth, and import it into the computer-aided design software to obtain a computer-aided drawing CAD model containing the patient's dental arch, teeth, and implant positions ( Figure 4 ).

[0099] (2) In the CAD software, retrieve the system data of the same model as the scanning rod and use the three-point spatial positioning to perform registration fitting ( Figure 5 ), use the split plane tool to view the horizontal profile to verify the fitting results and confirm that the two completely overlap ( Figure 6 ).

[0100] (3) In reality, retrieve the digital model of the implant substitute that matches the implant model in the system, and automatically align the scanbar data that has been fitted in step (2) ( Figure 7 ) and obtain the virtual reproduction of the three-dimensional position of the patient's intraosseous implant in the CAD software ( Figure 8 ).

[0101] (4) Prepare a digital model of the implant substitute with internal threads and port morphology that matches the patient's implant model. Fig. 9 ) is imported into the CAD software database, the digital model is selected and applied, the data in the original system that only contains the appearance of the implant substitute is replaced, and the implant substitute data containing the internal thread and port structure is reintegrated with the traditional digital model into an integrated model ( Fig.10 ).

[0102] (5) Then, the jaw frame information was added, and the size and position of the gum glue were designed to complete the design of the integrated model. Fig.11 ).

[0103] (6) Transfer the completed CAD integrated model to computer-aided manufacturing (CAM) for editing and typesetting ( Fig.12 ), using Micro 301Red Wax material for 3D printing to perform additive manufacturing, and obtain a physical model of an integrated model of an implant replacement body with internal threads and port structures ( Fig.13 ).

[0104] (7) Using the physical model obtained in step (6), try to install the implant restoration abutment. After tightening the central screw inside the abutment, the abutment is stable and has no shaking ( Fig.14 ), then grind the restoration base according to the patient's gum level ( Fig.15 ).

[0105] (8) After the restoration base is polished, the integrated model and the restoration base are scanned with an oral scanner and imported into the CAD software. After the crown design is completed, it is transferred to the CAM device for subtractive manufacturing ( Fig.15 ).

[0106] (9) After the restoration obtained by subtractive manufacturing in step (8) is trimmed and crystallized, the restoration base ( Fig.15), check and adjust the occlusal relationship and adjacent relationship, and then deliver to the clinic after disinfection.

[0107] (10) Use the implant restoration obtained in step (9) to complete the clinical tooth-wearing work ( Fig.16 ), the clinical trial effect was good, the restoration abutment and implant crown were smoothly positioned, and only fine-tuning of the occlusion was required. The implant restoration made using the integrated model designed using this method had accurate morphology, which greatly reduced the chairside treatment time and the probability of the restoration being returned to the factory for re-manufacturing due to the three-dimensional position relationship caused by the rotation or displacement of the substitute body not matching the actual position of the patient's implant.

[0108] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0109] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0110] Although preferred embodiments of the present invention have been described, additional changes and modifications may be made to these embodiments by those skilled in the art once the basic creative concepts are known. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for generating an integrated model of an implant substitute, characterized in that: include: Acquiring intraoral optical impression data of a patient, wherein an optical scanning rod is installed in the patient's mouth; Based on the intraoral optical impression data of the patient, the digital model of the substitute is registered with the optical scanning rod to obtain the three-dimensional position of the digital model of the substitute, and then the appearance data of the substitute of the same model as the intraoral implant is called to virtually reproduce the three-dimensional position of the intraoral implant; Based on the three-dimensional position of the intraoral implant obtained by virtual reproduction, and using the digital model of the implant substitute containing internal threads, ports and appearance, an integrated model of the implant substitute is generated.

2. The method for generating an integrated model of an implant substitute according to claim 1, characterized in that: The inner diameter, port structure and appearance parameters of the integrated model of the implant substitute match the restoration base of the implant system.

3. The method for generating an integrated model of an implant substitute according to claim 1, characterized in that: The pitch and diameter of the internal thread of the digital model of the replacement body in the integrated model of the implant replacement body match the technician screw of the implant system.

4. The method for generating an integrated model of an implant substitute according to claim 1, characterized in that: The pitch and diameter of the internal thread of the digital model of the implant substitute integrated model match the repair screw of the implant system.

5. The method for generating an integrated model of an implant substitute according to claim 1, characterized in that: The method further comprises: Edit and design the three-dimensional structure of the gums around the digital model of the replacement in the integrated model of the implant replacement; Edit the model base, add jaw frame and model information labels; The editing information of the integrated model of the implant substitute is transmitted to the printing device for 3D printing to obtain an integrated model containing the implant substitute structure.

6. The method for generating an integrated model of an implant substitute according to claim 1, characterized in that: Based on the acquired intraoral optical impression data of the patient, the digital model of the substitute is registered with the optical scanning rod to obtain the three-dimensional position of the digital model of the substitute, including: Import the acquired intraoral optical impression data of the patient into the computer-aided design software, and retrieve the scanning rod data of the corresponding model in the design software; Select the three common corner points of the scanning rod in the optical impression and the virtual scanning rod of the corresponding model in the design software in different planes, use spatial three-point positioning for initial alignment and fitting, and obtain the three-dimensional position of the digital model of the substitute.

7. The method for generating an integrated model of an implant substitute according to claim 1, characterized in that: Call the appearance data of the substitute of the same model as the intraoral implant to virtually reproduce the three-dimensional position of the intraoral implant, including: The appearance data of the substitute body with the same model as the intraoral implant, including characteristics such as height, diameter and shape, is called up, matched with the virtual scanning rod data, and the virtual reproduction of the three-dimensional position of the intraoral implant is obtained.

8. A device for generating an integrated model of an implant substitute, characterized in that: include: An optical impression data acquisition module is used to acquire the optical impression data in the patient's mouth, wherein an optical scanning rod is installed in the patient's mouth; A position registration module is used to register the digital model of the substitute with the optical scanning rod based on the acquired intraoral optical impression data of the patient, obtain the three-dimensional position of the digital model of the substitute, and then call the appearance data of the substitute of the same model as the intraoral implant to virtually reproduce the three-dimensional position of the intraoral implant; The appearance data application module is used to generate an integrated model of the implant substitute based on the three-dimensional position of the intraoral implant obtained by virtual reproduction and the digital model of the implant substitute containing internal threads, port structure and appearance morphology.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method for generating an integrated model of an implant substitute as claimed in any one of claims 1 to 7 is implemented.

10. An application of an integrated model of an implant substitute, characterized in that: The integrated model containing the implant substitute structure obtained in claim 5 is applied to oral implant restoration.

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