Digital tooth physiological form recovery method and device, electronic equipment and medium

Abstract

The invention discloses a digital tooth physiological morphology recovery method and device, electronic equipment and a medium, and the method comprises the steps: obtaining a digital model obtained through three-dimensional scanning of a to-be-repaired tooth, and obtaining a target digital model based on the digital model; fitting the two digital models, determining the range of a filling body, and reversely generating a digital guide plate according to the target digital model; a tooth filling sequence guide plate is designed according to the digital guide plate, the sequence guide plate is printed in a three-dimensional mode, and the tooth to be repaired is repaired according to the sequence guide plate. The scheme is used for filling and repairing large-area defects of teeth, and the sequence guide plate is printed in a three-dimensional manner based on a sequence filling concept, so that the physiological form of an affected tooth is recovered through a digital duplicating technology, an efficient, convenient and economical clinical treatment target is expected to be achieved, and the blank of the guide plate in the resin repairing field is filled; the resin filling treatment effect is improved, the technical sensitivity is reduced, the economic burden of a patient is relieved, and high popularization value and social effect are achieved.

Description

Technical Field

[0001] The present invention relates to the field of tooth technology, and in particular to a method, device, electronic equipment and medium for digitally restoring the physiological morphology of teeth. Background Art

[0002] Tooth tissue defects caused by caries or non-carious diseases are common clinical diseases. Timely repair of tooth defects is of great significance for preserving the affected teeth and restoring chewing function. There are two methods for repairing tooth tissue defects: indirect and direct. The indirect method usually uses inlays, onlays or full crowns for restoration. It is necessary to prepare corresponding retention shapes and resistance shapes to remove too much tooth tissue, resulting in an increased risk of pulpal lesions. The direct method mainly uses resin direct bonding restoration. This method has low requirements for the cavity shape, can preserve more tooth tissue, is convenient for clinical operation, and has low treatment costs. It is the main way to repair tooth defects in clinical practice. With the development of composite resin materials and bonding technology, composite resin direct bonding restoration as a minimally invasive method has been increasingly used in tooth defect repair.

[0003] However, composite resin filling and restoration of large-area tooth tissue defects is a difficult point in clinical treatment, in which restoring tooth shape and reconstructing occlusal relationship are the key to treatment. In most cases, doctors use free hands to perform filling and restoration. To achieve a more ideal shape, it requires a lot of practice and experience. At the same time, it is difficult to control the occlusal relationship of the filling body with free hands, and it is often necessary to adjust the filling after filling. This in turn destroys the shape of the filling. For teeth with latent caries that are basically intact in appearance, the "seal method" is often used clinically to restore the original shape and occlusal relationship of the tooth. However, the most common teeth with larger defects in clinical practice cannot be directly treated with the seal method, and a seal needs to be made through indirect means: silicone rubber mold removal after caries removal - casting plaster model - making diagnostic wax model - making a seal on the diagnostic wax model - clinical resin filling. This method is time-consuming and labor-intensive, and due to the limitation of the insertion channel, it can only be used for single-sided cavity defects ( Filling and repair of facial holes or buccal / lingual surfaces) is difficult to promote clinically. Summary of the invention

[0004] In view of the above problems, the present invention is proposed to provide a method and system for digital tooth physiological morphology restoration that overcomes the above problems or at least partially solves the above problems.

[0005] According to one aspect of the present invention, a method for restoring digital tooth physiological morphology is provided, the method comprising:

[0006] Obtain a real digital model of the tooth to be repaired through three-dimensional scanning, and obtain a target digital model that meets the physiological morphology of the tooth based on the real digital model;

[0007] The target digital model and the real digital model are subtracted and fitted to determine the range of the filling body, and a digital guide plate is reversely generated according to the surface features of the target digital model;

[0008] A printing model of a tooth filling sequence guide is designed according to the digital guide, and the tooth filling sequence guide is three-dimensionally printed to repair the tooth to be repaired according to the tooth filling sequence guide.

[0009] In some embodiments, reverse engineering the digital guide plate according to the surface features of the target digital model includes:

[0010] The target digital model is formed by inversely enveloping the surface features of the target digital model. Digital guides for facial, labial / buccal, lingual / palatal surfaces.

[0011] In some embodiments, designing a printed model of a tooth filling sequence guide according to the digital guide includes:

[0012] According to the digital guide plate of the buccal surface of the tooth, the buccal filling guide plate printing model is obtained. Digital guide plate The tongue surface filling guide printing model is obtained according to the tongue surface digital guide.

[0013] In some embodiments, a buccal filling guide printing model is obtained according to a digital buccal guide of a tooth, Digital guide plate The surface filling guide printing model further includes:

[0014] Extend the buccal filling guide to the adjacent teeth and surface, so that the buccal filling guide plate covers the buccal and lingual cusps;

[0015] exist The non-occlusal contact point of the surface filling guide is designed with an overflow channel;

[0016] The buccal filling guide and the The buccal filling guide is designed with an overlapping area, and the buccal filling guide and the The thickness of the surface filling guide plate is not less than a preset threshold.

[0017] In some embodiments, the three-dimensional printing of a dental filling guide comprises:

[0018] The printed model of the tooth filling sequence guide is output to a three-dimensional printing device for three-dimensional printing, wherein a photosensitive polymer is selected and a layering accuracy is set during the printing process of the three-dimensional printing device.

[0019] In some embodiments, repairing the tooth to be repaired according to the tooth filling sequence guide plate includes:

[0020] Simulating clinical filling methods, the filling guides on each side of the tooth are used to restore the physiological morphology of the tooth. According to another aspect of the present invention, a digital tooth physiological morphology restoration device is provided, the device comprising:

[0021] A model determination module, adapted to obtain a real digital model of the tooth to be repaired obtained through three-dimensional scanning, and obtain a target digital model that meets the physiological morphology of the tooth based on the real digital model;

[0022] A guide plate generation module, adapted to subtract and fit the target digital model and the real digital model, determine the range of the filling body, and reversely generate a digital guide plate according to the surface features of the target digital model;

[0023] The guide plate printing module is suitable for designing a printing model of a tooth filling sequence guide plate according to the digital guide plate, and three-dimensionally printing the tooth filling sequence guide plate to repair the tooth to be repaired according to the tooth filling sequence guide plate.

[0024] According to another aspect of the present invention, an electronic device is provided, comprising: a processor and a memory arranged to store computer executable instructions, wherein when the executable instructions are executed, the processor executes the digital tooth physiological morphology restoration method according to any one of the above-mentioned embodiments.

[0025] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores one or more programs, and when the one or more programs are executed by a processor, the digital tooth physiological morphology restoration method according to any one of the above-mentioned methods is implemented.

[0026] From the above, it can be seen that according to the digital tooth physiological morphology restoration method disclosed in the present invention, the physiological morphology of the affected tooth is restored on a three-dimensional model through digital technology, and on this basis, a digital guide plate is reproduced to replicate the tooth morphology, and a sequential filling method is used to restore the morphology and occlusion reconstruction of the affected tooth involving multiple tooth surface defects, and then a sequential guide plate is made.

[0027] The above method retains the advantages of the traditional seal method and greatly improves the time-consuming and labor-intensive shortcomings of indirect seal making with traditional plaster models; compared with traditional free-hand filling, it greatly reduces technical sensitivity and reduces chairside operation time, providing a minimally invasive, accurate and simple new resin filling and restoration method for large-area tooth defects.

[0028] The above technical solution is aimed at filling and repairing large-area tooth defects. It innovatively proposes a method of generating a target restoration guide by combining digital technology with the principle of reverse engineering. Compared with the traditional seal method, it eliminates the steps of "taking molds - making plaster models - making diagnostic wax models - making seals", greatly simplifying the clinical operation process.

[0029] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0031] Figure 1 A schematic diagram showing a process flow of a digital tooth physiological morphology restoration method according to an embodiment of the present invention is shown;

[0032] Figure 2 A schematic diagram of a technical route for digital tooth restoration (reproduction) according to an embodiment of the present invention is shown;

[0033] Figure 3 A schematic structural diagram of a digital tooth physiological morphology restoration device according to an embodiment of the present invention is shown;

[0034] Figure 4 A schematic structural diagram of an electronic device according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0035] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0036] Figure 1 A schematic flow chart of a method for digitally restoring the physiological morphology of teeth according to an embodiment of the present invention is shown, and the method comprises the following steps:

[0037] Step S110, obtaining a real digital model of the tooth to be repaired obtained through three-dimensional scanning, and obtaining a target digital model that meets the physiological morphology of the tooth based on the real digital model; it should be noted that the target digital model of the tooth after filling can be generated by using a bioreconstruction model, thereby forming a new physiological morphology of the tooth, ensuring that the filling body has a smooth appearance, clear pit and fissure morphology, and smooth edge transition;

[0038] Step S120, subtracting and fitting the target digital model and the real digital model to determine the range of the filling body, and reversely generating a digital guide plate according to the surface features of the target digital model;

[0039] Step S130, designing a printing model of a tooth filling sequence guide according to the digital guide, sending the printing model to a 3D printer, thereby 3D printing a tooth filling sequence guide to repair the tooth to be repaired according to the tooth filling sequence guide.

[0040] The above scheme of this embodiment is used for filling and repairing large-area tooth defects. The sequence guide is three-dimensionally printed based on the seal method and the concept of sequential filling, so as to restore the physiological morphology of the affected tooth through digital replication technology, in order to achieve efficient, convenient and economical clinical treatment goals, fill the gap in the guide plate in the field of resin restoration, improve the treatment effect of resin filling, reduce technical sensitivity, and reduce the economic burden on patients. It has high promotion value and social effect.

[0041] In some embodiments, in step S120, reversely generating a digital guide plate according to the surface features of the target digital model includes:

[0042] The target digital model is formed by inversely enveloping the surface features of the target digital model. Digital guides for the face, buccal and lingual surfaces. Surfaces other than the face, labial / buccal surface, and lingual / palatal surface are also within the protection scope of the embodiments of the present invention.

[0043] In some embodiments, designing a printed model of a tooth filling sequence guide according to the digital guide in step S130 includes:

[0044] According to the digital guide plate of the buccal surface of the tooth, the buccal filling guide plate printing model is obtained. Digital guide plate The tongue surface filling guide printing model is obtained according to the tongue surface digital guide.

[0045] In this embodiment, according to the formed digital guide plates, actual guide plates are manufactured according to the needs of tooth restoration. A printed model of the guide plate can be first manufactured, and then the actual physical guide plate can be processed by three-dimensional printing.

[0046] Therefore, in some embodiments, a buccal filling guide printing model is obtained according to the buccal digital guide of the tooth, Digital guide plate The surface filling guide printing model further includes:

[0047] Extend the buccal filling guide to the adjacent teeth and surface, so that the buccal filling guide plate covers the buccal and lingual cusps;

[0048] exist The non-occlusal contact point of the surface filling guide is designed with a 0.8mm-1.2mm wide overflow channel;

[0049] The buccal filling guide and the The buccal filling guide is designed with an overlap area of ​​0.8mm-1.2mm, and the buccal filling guide and the The thickness of the surface filling guide plate shall not be less than 2 mm to ensure its rigidity.

[0050] In some embodiments, the three-dimensional printing of the tooth filling guide in step S130 includes:

[0051] The printed model of the tooth filling sequence guide is output to a three-dimensional printing device for three-dimensional printing, wherein a photosensitive polymer is selected during the printing process of the three-dimensional printing device and the layering accuracy is set to 40 μm-60 μm.

[0052] In some embodiments, in step S130, repairing the tooth to be repaired according to the tooth filling sequence guide plate includes:

[0053] Simulate the clinical filling method and use the filling guides on each side of the tooth to restore the physiological shape of the tooth.

[0054] Specifically, after obtaining the processed filling guide, the guide is fixed to the tooth to be restored, and then filled with resin or silicone rubber. The guide is then taken out and the ideal shape of the tooth is restored after simple processing.

[0055] Optionally, the guide can be printed and directly attached to the tooth to be restored.

[0056] In a specific embodiment, the digital tooth physiological morphology restoration method of the present invention can also be divided into the following steps:

[0057] 1) Generate digital tooth model

[0058] A large cheek area was created using a standard tooth model (mandibular first tooth) For surface defects, 3Shape is used to scan and obtain digital models. The supporting software is used to generate the tooth shape after filling using the biological reconstruction mode to ensure that the filling body has a smooth shape, clear pit and fissure shape, and smooth edge transition. The digital models of standard teeth and filled molars are exported to .stl format files respectively.

[0059] 2) Design sequence guide

[0060] Import the .stl file into Geomagic software, fit the digital model before and after filling, and clarify the filling range. Use the shape after filling as a stamp to design the buccal filling guide and The buccal filling guide should cover at least 1mm outside the defect edge and extend to the adjacent teeth, The filling guide should cover at least 1 mm outside the defect edge and cover the buccal and lingual cusps (not exceeding the highest point of the axial surface) to ensure accurate positioning. The surface filling guide is designed with an overflow channel about 1mm wide at the non-occlusal contact point; the two guides have an overlapping area of ​​1mm, and the thickness of the guide is not less than 2mm to ensure its rigidity.

[0061] 3) 3D Printing Sequence Guide

[0062] The guide plate printing model generated above is imported into objet30pro for 3D layered printing. The material used is photosensitive polymer VeroClear RGD810, and the layering accuracy is about 50μm. After printing, the edge of the guide plate is trimmed to remove flash and burrs.

[0063] Simulate the clinical filling method, first use the buccal filling guide to restore the buccal shape of the tooth, and then use Surface filling guide plate is restored by stamp method Surface shape.

[0064] After filling, the IScan 3D structure scanner was used to scan and output the .stl format file. The filled area was selected for 3D comparison with the standard tooth to analyze the buccal and The accuracy of the surface shape.

[0065] Other points that need to be noted are: 1) When designing the shape of the sequence guide plate made by digital technology, it is necessary to comprehensively consider the order of use, placement stability, ease of operation, excess resin drainage channel and other related factors; 2) The separation method of the sequence guide plate and the resin. The sequence guide plate is also made of resin material. If it is light-cured together with the resin, it will be combined and difficult to separate. Therefore, it is necessary to select appropriate isolation materials and isolation methods so that the guide plate can be separated smoothly under the premise of ensuring the quality of the resin filling body.

[0066] With the development of oral digital technology, commercial digital scanning and design equipment, and 3D printing equipment have gradually become popular, and the cost has continued to decrease. At present, the scanning and design of digital restorations only takes a few minutes and can be completed chairside. In theory, compared with traditional free-hand filling treatment, the production of digital sequence guides to fill large-area defective teeth will not significantly increase the cost of treatment or the number of treatments. On the contrary, it reduces the requirements for doctor experience and the ability of resin to restore the shape, thereby reducing clinical operation time; compared with indirect restoration, the biggest advantage of this method is that it has lower requirements for the preparation of retention and resistance shapes, can maximize the retention of natural tooth tissue, and significantly reduces treatment costs.

[0067] The final technical route of tooth restoration and reproduction technology is as follows Figure 2 The technology disclosed in this embodiment is aimed at filling and repairing large-area defects in teeth. It innovatively proposes a method of generating a target restoration by combining digital technology with the principle of reverse engineering. Compared with the traditional seal method, it omits the steps of "taking a mold - making a plaster model - making a diagnostic wax model - making a seal", which greatly simplifies the clinical operation process.

[0068] According to another aspect of the present invention, a digital tooth physiological morphology restoration device is provided, which is combined with Figure 3 As shown, the device 300 includes:

[0069] The model determination module 310 is adapted to obtain a real digital model of the tooth to be repaired obtained through three-dimensional scanning, and obtain a target digital model that meets the physiological morphology of the tooth based on the real digital model;

[0070] A guide plate generation module 320 is adapted to subtract and fit the target digital model and the real digital model, determine the range of the filling body, and reversely generate a digital guide plate according to the surface features of the target digital model;

[0071] The guide plate printing module 330 is suitable for designing a printing model of a tooth filling sequence guide plate according to the digital stamp, and three-dimensionally printing the tooth filling sequence guide plate to repair the tooth to be repaired according to the tooth filling sequence guide plate.

[0072] The above scheme of this embodiment is used for filling and repairing large-area tooth defects. The sequence guide is three-dimensionally printed based on the seal method and the concept of sequential filling, so as to restore the physiological morphology of the affected tooth through digital replication technology, in order to achieve efficient, convenient and economical clinical treatment goals, fill the gap in the guide plate in the field of resin restoration, improve the treatment effect of resin filling, reduce technical sensitivity, and reduce the economic burden on patients. It has high promotion value and social effect.

[0073] In one or some embodiments, the guide plate generation module 320 reversely generates a digital guide plate according to the surface features of the target digital model, including:

[0074] The target digital model is formed by inversely enveloping the surface features of the target digital model. Digital guides for facial, labial / buccal, lingual / palatal surfaces.

[0075] In some embodiments, the guide plate printing module 330 designs a printing model of a tooth filling sequence guide plate according to the digital guide plate, including:

[0076] According to the digital guide plate of the buccal surface of the tooth, the buccal filling guide plate printing model is obtained. Digital guide plate The tongue surface filling guide printing model is obtained according to the tongue surface digital guide.

[0077] In some embodiments, the guide plate printing module 330 obtains a buccal filling guide plate printing model according to the buccal digital guide plate of the tooth, and Digital guide plate The surface filling guide printing model further includes:

[0078] Extend the buccal filling guide to the adjacent teeth and surface, so that the buccal filling guide plate covers the buccal and lingual cusps;

[0079] exist The non-occlusal contact point of the surface filling guide is designed with an overflow channel;

[0080] The buccal filling guide and the The buccal filling guide is designed with an overlapping area, and the buccal filling guide and the The thickness of the surface filling guide plate is not less than a preset threshold.

[0081] In some embodiments, the three-dimensional printing of the tooth filling guide in the guide printing module 330 includes:

[0082] The printed model of the tooth filling sequence guide is output to a three-dimensional printing device for three-dimensional printing, wherein a photosensitive polymer is selected and a layering accuracy is set during the printing process of the three-dimensional printing device.

[0083] In some embodiments, the guide plate printing module 330 repairs the tooth to be repaired according to the tooth filling sequence guide plate, including:

[0084] Simulate the clinical filling method and use the filling guides on each side of the tooth to restore the physiological shape of the tooth.

[0085] In summary, the embodiments of the present invention use digital technology to restore the shape and occlusal relationship of the affected tooth and generate a target restoration, combine the reverse engineering principle and the concept of sequential filling to generate a filling guide, and use three-dimensional printing to produce a filling and restoration sequence guide; and realize the integration of different platforms and software in the process of producing sequence guides using digital technology.

[0086] The embodiments of the present invention fill the gap in the field of direct resin bonding restoration of tooth defects using three-dimensional printing sequence guide technology, and provide a new method and new idea for the restoration of large-area tooth defects.

[0087] It should be noted that:

[0088] The algorithm and display provided herein are not inherently related to any particular computer, virtual device or other equipment. Various general-purpose devices can also be used together with the teachings based on this. According to the above description, it is obvious to construct the structure required for this type of device. In addition, the present invention is not directed to any specific programming language either. It should be understood that various programming languages ​​can be utilized to realize the content of the present invention described herein, and the description of the above specific language is for the purpose of disclosing the best mode of the present invention.

[0089] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0090] Similarly, it should be understood that in order to streamline the present invention and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim.

[0091] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition they may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and / or processes or units are mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0092] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is meant to be within the scope of the present invention and to form different embodiments.

[0093] The various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or digital signal processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in the digital tooth physiological morphology restoration device according to an embodiment of the present invention. The present invention may also be implemented as a device or apparatus program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program for implementing the present invention may be stored on a computer-readable medium, or may be in the form of one or more signals. Such a signal may be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0094] An embodiment of the present invention provides a non-volatile computer storage medium, wherein the computer storage medium stores at least one executable instruction, and the computer executable instruction can execute the digital tooth physiological morphology restoration method in any of the above method embodiments.

[0095] Figure 4 The schematic diagram of the structure of the electronic device embodiment of the present invention is shown. The specific embodiment of the present invention does not limit the specific structure of the electronic device.

[0096] like Figure 4As shown, the electronic device may include: a processor (processor) 402 , a communication interface (Communications Interface) 404 , a memory (memory) 406 , and a communication bus 408 .

[0097] The processor 402, the communication interface 404, and the memory 406 communicate with each other via a communication bus 408. The communication interface 404 is used to communicate with other devices such as a client or other server network elements. The processor 402 is used to execute a program 410, which can specifically execute the relevant steps in the embodiment of the digital tooth physiological morphology restoration method for the electronic device.

[0098] Specifically, the program 410 may include program codes, which include computer operation instructions.

[0099] The processor 402 may be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention. The one or more processors included in the electronic device may be processors of the same type, such as one or more CPUs; or processors of different types, such as one or more CPUs and one or more ASICs.

[0100] The memory 406 is used to store the program 410. The memory 406 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0101] The program 410 can be specifically used to enable the processor 402 to perform operations corresponding to the above-mentioned embodiment of the digital tooth physiological morphology restoration method.

[0102] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

Claims

1. A digital tooth physiological morphology restoration method, characterized in that: The method comprises: Obtain a real digital model of the tooth to be repaired through three-dimensional scanning, and obtain a target digital model that meets the physiological morphology of the tooth based on the real digital model; The target digital model and the real digital model are subtracted and fitted to determine the range of the filling body, and a digital guide plate is reversely generated according to the surface features of the target digital model; A printing model of a tooth filling sequence guide is designed according to the digital guide, and the tooth filling sequence guide is three-dimensionally printed to repair the tooth to be repaired according to the tooth filling sequence guide.

2. The method according to claim 1, characterized in that: Reversely generating a digital guide plate according to the surface features of the target digital model includes: The target digital model is formed by inversely enveloping the surface features of the target digital model. Digital guides for facial, labial / buccal, lingual / palatal surfaces.

3. The method according to claim 2, characterized in that The printed model of the tooth filling sequence guide designed according to the digital guide includes: According to the digital guide plate of the buccal surface of the tooth, the buccal filling guide plate printing model is obtained. Digital guide plate The tongue surface filling guide printing model is obtained according to the tongue surface digital guide.

4. The method according to claim 3, characterized in that: According to the digital guide plate of the buccal surface of the tooth, the buccal filling guide plate printing model is obtained. Digital guide plate The surface filling guide printing model further includes: Extend the buccal filling guide to the adjacent teeth and surface, so that the buccal filling guide plate covers the buccal and lingual cusps; exist The non-occlusal contact point of the surface filling guide is designed with an overflow channel; The buccal filling guide and the The buccal filling guide is designed with an overlapping area, and the buccal filling guide and the The thickness of the surface filling guide plate is not less than a preset threshold.

5. The method according to claim 1, characterized in that The 3D printed tooth filling guide includes: The printed model of the tooth filling sequence guide is output to a three-dimensional printing device for three-dimensional printing, wherein a photosensitive polymer is selected and a layering accuracy is set during the printing process of the three-dimensional printing device.

6. The method according to claim 1, characterized in that Restoring the tooth to be repaired according to the tooth filling sequence guide plate includes: Simulate the clinical filling method and use the filling guides on each side of the tooth to restore the physiological shape of the tooth.

7. A digital tooth physiological morphology restoration device, characterized in that: The device comprises: A model determination module, adapted to obtain a real digital model of the tooth to be repaired obtained through three-dimensional scanning, and obtain a target digital model that meets the physiological morphology of the tooth based on the real digital model; A guide plate generation module, adapted to subtract and fit the target digital model and the real digital model, determine the range of the filling body, and reversely generate a digital guide plate according to the surface features of the target digital model; The guide plate printing module is suitable for designing a printing model of a tooth filling sequence guide plate according to the digital guide plate, and three-dimensionally printing the tooth filling sequence guide plate to repair the tooth to be repaired according to the tooth filling sequence guide plate.

8. An electronic device, characterized in that: The invention comprises a processor and a memory arranged to store computer executable instructions, wherein when the executable instructions are executed, the processor executes the digital tooth physiological morphology restoration method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores one or more programs, and when the one or more programs are executed by a processor, the method for restoring the digital tooth physiological morphology according to any one of claims 1 to 6 is implemented.

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