Method of manufacturing dental object, system and method of manufacturing object

Abstract

The invention provides a method for manufacturing a dental object, a system and a method for manufacturing an object, and a method for manufacturing a dental object, the dental object comprising a base and teeth, the method comprising: acquiring an initial data model of the dental object; increasing the thickness of the initial data model of the dental object by a predetermined value in at least one direction to obtain a target data model; integrally manufacturing a target object based on the target data model, the target object including a base portion and a tooth portion, the base portion including a first material, and the tooth portion including a second material different from the first material; the target object is processed to reduce a predetermined thickness of the target object in at least one direction to obtain a dental object. According to the technical scheme, the problem that the production cost is increased due to the fact that manual bonding and polishing are needed in the prior art is effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of 3D printing, in particular to a method for manufacturing a dental object, a system and a method for manufacturing an object. BACKGROUND

[0002] The manufacturing process of complete dentures occupies an important position in the field of oral prosthetics. The traditional process usually includes taking an impression, making a plaster model, manually arranging finished resin teeth and carving a wax base, injection molding, and subsequent manual polishing and polishing. In recent years, with the rapid development of digital technology, the manufacturing of complete dentures has gradually introduced automated processes to improve efficiency and accuracy and reduce labor costs.

[0003] In the automated manufacturing of complete dentures, there are currently two technical approaches: one is to achieve integrated molding of the dentition and the base by cutting a resin disc. This method improves the speed and accuracy of production, but the aesthetics of the gum margin curve is limited, and manual polishing and polishing are still required after cutting. The second is to use 3D printing technology to print the base and dentition separately, and then manually bond them using the base or tooth material as an adhesive. Although 3D printing technology can quickly generate parts, the bonding and subsequent polishing and polishing processes still rely on manual operations, increasing the production cycle and cost.

[0004] Specifically, the application of DLP (Digital Light Processing) 3D printing technology in the manufacturing of complete dentures is particularly prominent. DLP printers can accurately print bases and dentitions, but the post-processing process includes support removal, cleaning, bonding, polishing, and polishing. The bonding step requires manual precise alignment of the base and dentition and the use of adhesive to connect them, which not only tests the operator's professional skills but also consumes a lot of time. Polishing and polishing are even more time-consuming and labor-intensive, and the operator needs to carefully remove the support structures and layer lines generated during the printing process and perform fine processing on the surface. SUMMARY

[0005] The main purpose of the present application is to provide a method for manufacturing a dental object, a system and a method for manufacturing an object to solve the problem of the need for manual polishing and the increase in production costs in the related art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a method for manufacturing a dental object is provided, the dental object comprising a base and teeth, the method comprising:

[0007] obtaining an initial data model of the dental object;

[0008] increasing the thickness of the initial data model of the dental object by a predetermined value in at least one direction to obtain a target data model;

[0009] integrally fabricating the target object based on the target data model, wherein the target object comprises a base portion and a tooth portion, the base portion comprises a first material, and the tooth portion comprises a second material different from the first material;

[0010] processing the target object to reduce a thickness of a predetermined value of the target object in at least one direction to obtain the dental object.

[0011] Further, the predetermined value is 30 pm to 3000 pm, preferably 50 pm to 2000 pm, preferably 100 pm to 1000 pm, preferably 150 pm to 400 pm.

[0012] Further, the at least one direction comprises at least one of: an X-axis direction along a space where the data model is located, a Y-axis direction along the space where the data model is located, a Z-axis direction along the space where the data model is located, or a normal direction along a contour of the data model.

[0013] Further, integrally fabricating the target object comprises: fabricating the target object using a multi-material light-cured 3D printing device.

[0014] Further, processing the target object comprises: cutting the target object using a machining device.

[0015] Further, the machining device sets a cutting path based on the initial data model of the dental object.

[0016] Further, the method further comprises: providing a locator model for the initial data model of the dental object, the locator model is configured to be integrally fabricated with the target data model, and a locator formed by the locator model is capable of being installed to the machining device.

[0017] Further, processing the target object comprises: polishing the target object.

[0018] According to a second aspect of the present application, a method for fabricating a plurality of dental objects is provided, comprising:

[0019] obtaining initial data models of the plurality of dental objects;

[0020] increasing a thickness of the initial data model of each dental object to obtain a plurality of target data models of the plurality of dental objects;

[0021] integrally fabricating the plurality of target objects based on the plurality of target data models, wherein each target object comprises a base portion and a tooth portion, the base portion comprises a first material, and the tooth portion comprises a second material different from the first material;

[0022] The plurality of target objects are subtractively manufactured to reduce the thickness of the target objects to obtain a plurality of dental objects.

[0023] Further, the additive manufacturing of the plurality of target objects comprises simultaneously manufacturing the plurality of target objects, the plurality of target objects being connected by a plurality of connectors.

[0024] Further, the additive manufacturing of the plurality of target objects comprises that the layer thickness of the additive manufacturing is 20-300 μm.

[0025] Further, the method further comprises adjusting the process parameters of the additive manufacturing and the process parameters of the subtractive manufacturing to adapt the total time length of the additive manufacturing to the total time length of the subtractive manufacturing.

[0026] Further, the process parameters of the additive manufacturing comprise at least one of the following: layer thickness, number of target data models in a single layer, exposure time, platform lifting time; the process parameters of the subtractive manufacturing comprise at least one of the following: cutting path, cutting times, polishing time.

[0027] According to a third aspect of the present application, a system for manufacturing an object is provided, comprising:

[0028] a processor configured to increase a thickness of a data model of the object, the object comprising a first portion formed at least of a first material and a second portion formed at least of a second material, the first material being different from the second material;

[0029] a multi-material 3D printing device configured to manufacture the object with the increased thickness based on the data model with the increased thickness;

[0030] a post-processing device configured to remove the increased thickness of the object by subtractive manufacturing.

[0031] According to a fourth aspect of the present application, a method for manufacturing an object is provided, comprising:

[0032] obtaining an initial data model of the object;

[0033] increasing a thickness of the data model of the object to obtain a target data model;

[0034] manufacturing a target object by additive manufacturing based on the target data model, wherein a first portion of the target object comprises a first material and a second portion of the target object comprises a second material different from the first material;

[0035] subtractively manufacturing the target object to reduce the thickness of the target object such that the processed target object substantially corresponds to the size of the initial data model.

[0036] The technical scheme of the present application is applied to obtain an initial data model of a dental object; the thickness of the initial data model of the dental object is increased by a predetermined value in at least one direction to obtain a target data model; through the setting of the predetermined value, the post-printing processing can be prepared, and the accuracy of the final product size can be ensured. By using the multi-material printing technology, the different materials of the base and the teeth can be integrally formed in the same manufacturing process, and the production efficiency is improved and the cost is reduced. The target object is processed to reduce the thickness of the target object by a predetermined value in at least one direction, so as to obtain a dental object. In this way, by accurately controlling the thickness of the predetermined value, the size of the dental object is ensured to be consistent with the design model, so as to realize the manufacturing of the high-quality dental object, and the whole process of printing and post-processing is realized, and the manual participation is reduced. Therefore, the technical scheme of the present application effectively solves the problem of manual polishing and polishing in the related art.

[0037] In addition, for the layer lines generated by 3D printing, using cutting is beneficial to eliminate the layer lines.

[0038] In the manufacturing of objects made of multiple materials, the traditional method respectively uses single material to manufacture different parts of the object, and then assembles or bonds using complementary structural features. The present application directly prints a thickened version of the aforementioned object using multi-material, and then removes unnecessary features using cutting. This is very advantageous to avoid the assembly problem caused by printing accuracy, while taking into account the accuracy of the object. BRIEF DESCRIPTION OF DRAWINGS

[0039] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description, explain the present application. The present application is shown by way of example in the drawings and is not intended to limit the present application. In the drawings:

[0040] Figure 1 A flowchart of an embodiment of a method for manufacturing a dental object according to the present application is shown;

[0041] Figure 2 A flowchart of an embodiment of a method for manufacturing a plurality of dental objects according to the present application is shown;

[0042] Figure 3 A flowchart of an embodiment of a method for manufacturing an object according to the present application is shown. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one example embodiment is merely illustrative in nature and is in no way limiting to the application or its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort fall within the scope of the present application.

[0044] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0045] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the application, unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown are for the purpose of illustration and description only. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as if the techniques, methods, and apparatus were discussed in the present specification. In all examples shown and discussed herein, any specific values are to be interpreted as illustrative only and are not to be construed as limiting. Other examples of the example embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the disclosure, and thus, once defined, no further discussion of such parts is necessary.

[0046] As Figure 1 In some embodiments, a method of manufacturing a dental object, the dental object comprising a base and teeth, comprises:

[0047] obtaining an initial data model of the dental object;

[0048] increasing a thickness of the initial data model of the dental object by a predetermined value in at least one direction to obtain a target data model;

[0049] integrally manufacturing a target object based on the target data model, wherein the target object comprises a base portion and a tooth portion, the base portion comprising a first material, the tooth portion comprising a second material different from the first material;

[0050] The target object is processed to reduce the thickness of the target object by a predetermined value in at least one direction, thereby obtaining a dental object.

[0051] By applying the technical solution of the embodiment, an initial data model of the dental object is obtained; the thickness of the initial data model of the dental object is increased by a predetermined value in at least one direction to obtain a target data model; through the setting of the predetermined value, preparation for post-printing processing can be made, and the accuracy of the size of the final product can be ensured. By using the multi-material printing technology, different materials of the base and the teeth can be integrally formed in the same manufacturing process, the production efficiency is improved, and the cost is reduced. The target object is processed to reduce the thickness of the target object by a predetermined value in at least one direction, thereby obtaining a dental object. In this way, by accurately controlling the thickness reduced by the predetermined value, it is ensured that the size of the dental object is consistent or substantially consistent with the design model, thereby realizing high-quality dental object manufacturing. In this way, the whole process of printing and post-processing is realized, and the manual participation is reduced. Therefore, the technical solution of the embodiment effectively solves the problem of the related art that manual polishing is required, thereby increasing the production cost.

[0052] As shown in Figure 1 In some embodiments, the predetermined value is 30 pm to 3000 pm. The range of the predetermined value is set, for example, between 30 pm and 1000 pm, taking into account the shrinkage of different materials during the printing process. This range not only takes into account the physical properties of the materials, but also takes into account the printing accuracy and efficiency, ensuring that the dental object can be accurately removed from the pre-thickened part by the cutting machine in the post-processing stage to reach the designed size. And by adjusting the predetermined value, different materials and printing conditions can be flexibly adapted, improving the flexibility of manufacturing and product quality.

[0053] The predetermined value is, for example, 30 pm to 3000 pm, preferably 50 pm to 2000 pm, preferably 100 pm to 1000 pm, preferably 150 pm to 400 pm, for example, 50 pm to 800 pm, for example, 100 pm to 500 pm, for example, 150 pm to 500 pm, for example, 200 pm to 400 pm.

[0054] Specifically, the predetermined value can be 160 pm, 170 pm, 180 pm, 190 pm, 200 pm, 210 pm, 220 pm, 230 pm, 240 pm, 250 pm, 260 pm, 270 pm, 280 pm, 290 pm, 300 pm, 310 pm, 320 pm, 330 pm, 340 pm, 350 pm, 360 pm, 370 pm, 380 pm, 390 pm, 400 pm, 410 pm, 420 pm, 430 pm, 440 pm, 450 pm, 460 pm, 470 pm, 480 pm, 490 pm, or other sizes.

[0055] As shown in Figure 1 In some embodiments, the at least one direction includes at least one of: a direction along an X-axis of a space in which the data model is located, a direction along a Y-axis of the space in which the data model is located, a direction along a Z-axis of the space in which the data model is located, or a direction along a normal of a contour of the data model.

[0056] By increasing the thickness of the data model in each direction in the three-dimensional space, it is ensured that the product can achieve the expected size and appearance.

[0057] And the thickness increase in the three-dimensional direction can better adapt to the machining path of the cutting machine, thereby improving the machining efficiency.

[0058] As shown in Figure 1 In some embodiments, the manufacturing of the target object includes: manufacturing the target object using a multi-material light-curing 3D printing device. By using the multi-material light-curing 3D printing technology, different materials of the base and the teeth can be printed simultaneously in one printing process, simplifying the manufacturing process. As shown in Figure 1 In some embodiments, the processing of the target object includes: cutting the target object using a mechanical machining device. By cutting the printed target object using the mechanical machining device, the surface layer lines are removed, and the surface flatness is improved. And the mechanical machining device cuts the target object by using a high-speed rotating cutter to achieve the expected surface finish.

[0059] The above arrangement not only ensures the smoothness of the surface of the complete denture, but also reduces the time and cost of subsequent manual polishing.

[0060] As shown in Figure 1 In some embodiments, the mechanical machining device sets a cutting path based on the initial data model of the dental object. The above arrangement can automatically calculate the cutting path, thereby achieving accurate cutting.

[0061] Specifically, the data transmitted by the pre-processing software can be received by the CAM software to automatically calculate the cutting path and achieve precise cutting. And the CAM software generates the optimal cutting path according to the shape and size of the data model and the positioning mark information. This can ensure the automation and high precision of the cutting process, and reduce the waste rate.

[0062] As shown in Figure 1As shown, in some embodiments, the method further includes: providing a locator model for an initial data model of the dental object, the locator model being configured to be integrally formed with the target data model, and the locator formed by the locator model being mountable onto a machining equipment. The locator ensures that the cutting machine can accurately identify and position the target object. Specifically, the locator model provides a stable fixing point for the cutting machine through a tight connection with the target object. This ensures improved accuracy and stability of the cutting process and reduces product quality problems caused by inaccurate positioning.

[0063] like Figure 1 As shown, in some embodiments, processing the target object includes grinding and polishing the target object. The surface finish is improved by grinding and polishing the cut target object using a polishing wheel on a cutting machine or an eddy current grinding machine. Specifically, the polishing wheel or grinding machine removes minor surface imperfections through high-speed rotation and friction, achieving a smooth effect.

[0064] The technology in this embodiment enables the surface of complete dentures to achieve an ideal polishing state, improving the aesthetics and comfort of the product.

[0065] According to a second aspect of this application, a method for manufacturing a plurality of dental objects is provided, such as... Figure 2 As shown, the method for manufacturing multiple dental objects in this embodiment includes:

[0066] Obtain initial data models for multiple dental objects;

[0067] Increase the thickness of the initial data model for each dental object to obtain multiple target data models for multiple dental objects;

[0068] Based on multiple target data models, multiple target objects are additively manufactured, each target object including a base plate part and a tooth part. The base plate part includes a first material, and the tooth part includes a second material different from the first material.

[0069] Multiple dental objects are obtained by subtractive manufacturing of multiple target objects to reduce their thickness.

[0070] Production efficiency is improved by printing multiple denture models simultaneously. Specifically, layout software is used to arrange multiple models, ensuring that the number printed is maximized within a limited space. This enables mass production and reduces costs.

[0071] like Figure 2 As shown, in some embodiments, additive manufacturing of multiple target objects includes: simultaneously manufacturing multiple target objects, which are connected via multiple connectors. Connecting multiple target objects using connectors during the printing process facilitates batch processing.

[0072] The design of the connector needs to take into account the ease of breaking and stability during subsequent cutting and polishing. Specifically, the technology in the embodiments can simplify the production process and improve automation.

[0073] As shown in the Figure 2 embodiments, the additive manufacturing of the plurality of target objects includes: the layer thickness of the additive manufacturing is 20 μm-300 μm, for example, 50 μm-250 μm, for example, 100 μm-200 μm. By adjusting the layer thickness in the 3D printing process, the printing speed and the surface quality are balanced. The selection of the layer thickness needs to take into account the printing efficiency and the feasibility of subsequent cutting. The solidified layer thickness can be one or more times of the layer thickness of the slicing. For example, in the slicing process, the layer thickness of a single slice is 40 μm, and the actual solidified layer thickness is 40 μm, 80 μm, or 120 μm.

[0074] The technology in the embodiments can ensure the printing speed while maintaining good surface quality and cutting performance.

[0075] As shown in the Figure 2 embodiments, the method further includes: adjusting the process parameters of the additive manufacturing and the process parameters of the subtractive manufacturing to adapt the total length of the additive manufacturing to the total length of the subtractive manufacturing. By adjusting the process parameters of printing and cutting, the matching of the two is realized, and the overall production efficiency is improved.

[0076] Specifically, the adjustment of the process parameters needs to be based on the equipment capacity and product demand to ensure the smoothness of the production process. Further, the technology in the embodiments can realize seamless docking of printing and cutting, reduce waiting time, and improve equipment utilization.

[0077] As shown in the Figure 2 embodiments, the process parameters of the additive manufacturing include at least one of the following: layer thickness, number of target data models in a single version, exposure time, platform lifting time;

[0078] As shown in the Figure 2 embodiments, the process parameters of the subtractive manufacturing include at least one of the following: cutting path, cutting times, polishing time. By fine control of the process parameters of printing and cutting, high-quality and efficient production is realized. Each process parameter directly affects the quality and production efficiency of the final product.

[0079] The technology in the embodiments can ensure the controllability and consistency of the production process and improve the product quality.

[0080] The technical scheme relates to an automatic post-processing process of a full denture, which starts from obtaining an initial data model, automatically adjusts the model thickness through a processor, and integrally manufactures a target object including different material parts of the base and the teeth using a multi-material 3D printing device.

[0081] Subsequently, the target object is sent to a post-processing device, and through cutting by a cutting machine and polishing by a polishing wheel or a vortex grinding machine, surface layer lines and excess materials are removed, and finally a dental object with a size consistent or substantially consistent with the initial data model is obtained. Throughout the entire working process, the processor, the printing device and the post-processing device work automatically and cooperatively through data transmission and signal control, reducing the manual participation link and improving the production efficiency and product quality.

[0082] In addition, by optimizing process parameters such as layer thickness, exposure time, cutting path, etc., the efficiency and stability of the production process are ensured. In batch production, multiple target objects are connected through connectors for unified processing, further improving production efficiency. The entire working process embodies the characteristics of automation, intelligence and high efficiency, and provides a new solution for the production of full dentures.

[0083] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be realized by general computing devices, which can be concentrated on a single computing device or distributed on a network composed of multiple computing devices, and they can be realized by program codes executable by computing devices, so that they can be stored in storage devices and executed by computing devices, and in some cases, the steps shown or described can be executed in different order, or they can be made into individual integrated circuit modules, or multiple modules or steps can be made into a single integrated circuit module. Thus, the present application is not limited to any specific combination of hardware and software.

[0084] According to a third aspect of the present application, a system for manufacturing an object is provided, the system for manufacturing an object of the embodiment comprises:

[0085] a processor configured to increase a thickness of a data model of the object, the object comprising a first portion formed at least from a first material and a second portion formed at least from a second material, the first material being different from the second material;

[0086] a multi-material 3D printing device configured to manufacture the object with the increased thickness based on the data model with the increased thickness;

[0087] a post-processing device configured to remove the portion of the increased thickness of the object by subtractive manufacturing.

[0088] By constructing an integrated manufacturing system, automatic production from a data model to a finished product is realized. Specifically, the processor, the printing device and the post-processing device work cooperatively through data transmission and signal control.

[0089] The technology in the embodiment can provide an efficient, stable and highly automated production environment.

[0090] According to a fourth aspect of the present application, a method for manufacturing an object is provided, comprising Figure 3 As shown, the method for manufacturing an object of the embodiment comprises:

[0091] obtaining an initial data model of the object;

[0092] increasing the thickness of the data model of the object to obtain a target data model;

[0093] obtaining a target object through additive manufacturing based on the target data model, wherein a first part of the target object comprises a first material, and a second part of the target object comprises a second material different from the first material;

[0094] subtractively manufacturing the target object to reduce the thickness of the target object, so that the processed target object is substantially consistent in size with the initial data model. It can be understood that errors caused by processing are difficult to avoid, so the processed target object is substantially consistent in size with the initial data model.

[0095] Through the cooperation of the multi-material printer and the cutting machine, automatic full denture post-processing is realized. By increasing the thickness of the object model before printing, and then removing the excess material through cutting, the size consistent with the original data model is achieved.

[0096] Further, the embodiment can greatly reduce manual participation, reduce production cost, and improve production efficiency and product quality.

[0097] Specifically, by increasing a preset thickness on the data model, then using multi-material 3D printing technology for integrated molding, and finally removing the pre-thickened material through precise post-processing, efficient and accurate manufacturing of the object is realized. The increase of the preset thickness takes into account the shrinkage characteristics of the material, ensuring the accuracy of the final size. The application of multi-material 3D printing technology enables the use of multiple materials in a single manufacturing process, improving the diversity and applicability of products. Precise control of post-processing solves the problems of size deviation and poor surface quality in traditional manufacturing methods, improving the precision and aesthetics of products.

[0098] In the description of the application, it should be understood that "a plurality of" means two or more than two. The orientation words such as "front, back, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated by the orientation or position relationship shown in the drawings are usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the application; The orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0099] For the convenience of description, spatial relative terms such as "on", "above", "upper surface", "upper", etc. can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Therefore, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.

[0100] In addition, it should be noted that the use of "first", "second" and the like to define parts only facilitates the distinction of corresponding parts, and the above words have no special meaning unless otherwise stated, therefore, it cannot be understood as a limitation on the scope of protection of the application.

[0101] The above only describes the preferred embodiments of the application and is not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A method for manufacturing a dental object, said dental object comprising a base and teeth, characterized in that, include: Obtain the initial data model of the dental object; Along at least one direction, the thickness of the initial data model of the dental object is increased by a predetermined value to obtain the target data model; Based on the target data model, the target object is manufactured as a single unit, wherein the target object includes a base portion and a tooth portion, the base portion includes a first material, and the tooth portion includes a second material different from the first material; The target object is processed to reduce its thickness by a predetermined value along at least one direction, thereby obtaining the dental object.

2. The method for manufacturing a dental object according to claim 1, characterized in that, The predetermined value is 30 μm to 3000 μm, preferably 50 μm to 2000 μm, preferably 100 μm to 1000 μm, and preferably 150 μm to 400 μm.

3. The method for manufacturing a dental object according to claim 1, characterized in that, The at least one direction includes at least one of the following: along the X-axis of the space where the data model is located, along the Y-axis of the space where the data model is located, along the Z-axis of the space where the data model is located, or along the normal of the contour of the data model.

4. The method for manufacturing a dental object according to claim 1, characterized in that, The integrated manufacturing target object includes: manufacturing the target object using a multi-material photopolymerization 3D printing device.

5. The method for manufacturing a dental object according to claim 1, characterized in that, Processing the target object includes cutting the target object using machining equipment.

6. The method for manufacturing a dental object according to claim 5, characterized in that, The machining equipment sets the cutting path based on the initial data model of the dental object.

7. The method for manufacturing a dental object according to claim 5, characterized in that, Also includes: A locator model is provided for the initial data model of a dental object. The locator model is configured to be integrally formed with the target data model, and the locator formed by the locator model can be mounted on a machining equipment.

8. The method for manufacturing a dental object according to claim 1, characterized in that, Processing the target object includes grinding and polishing the target object.

9. A method for manufacturing a plurality of dental objects, characterized in that, include: Obtain initial data models for multiple dental objects; Increase the thickness of the initial data model for each dental object to obtain multiple target data models for multiple dental objects; Based on the multiple target data models, multiple target objects are additively manufactured, wherein each target object includes a base portion and a tooth portion, the base portion includes a first material, and the tooth portion includes a second material different from the first material; Multiple target objects are subjected to subtractive manufacturing to reduce the thickness of the target objects, thereby obtaining multiple dental objects.

10. The method for manufacturing a plurality of dental objects according to claim 9, characterized in that, The additive manufacturing of multiple target objects includes: simultaneously manufacturing multiple target objects, the multiple target objects being connected via multiple connectors.

11. The method for manufacturing a plurality of dental objects according to claim 9, characterized in that, The additive manufacturing of multiple target objects includes additive manufacturing with a layer thickness of 20μm to 300μm.

12. The method for manufacturing a plurality of dental objects according to claim 9, characterized in that, Also includes: Adjust the process parameters of additive manufacturing and subtractive manufacturing so that the total time of additive manufacturing is adapted to the total time of subtractive manufacturing.

13. The method for manufacturing a plurality of dental objects according to claim 12, characterized in that, The additive manufacturing process parameters include at least one of the following: layer thickness, number of target data models in a single plate, exposure time, and platform lifting time; The process parameters for subtractive manufacturing include at least one of the following: cutting path, number of cutting operations, and polishing time.

14. A system for manufacturing objects, characterized in that, include: A processor configured to increase the thickness of a data model of an object, the object comprising a first portion formed of at least a first material and a second portion formed of at least a second material, the first material being different from the second material; Multi-material 3D printing equipment is configured to manufacture objects with increased thickness based on data models with increased thickness; The post-processing equipment is configured to remove the increased thickness portion of the object through subtractive manufacturing.

15. A method for manufacturing an object, characterized in that, include: Obtain the initial data model of the object; Increase the thickness of the object's data model to obtain the target data model; Based on the target data model, a target object is obtained by additive manufacturing, wherein the first part of the target object includes a first material, and the second part of the target object includes a second material different from the first material. The target object is subjected to subtractive manufacturing to reduce its thickness, so that the size of the processed target object is basically the same as that of the initial data model.

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