3D printing method of dental brackets

Abstract

The application provides a 3D printing method of a dental bracket, which comprises the following steps: obtaining parameters of the dental bracket, and selecting a printing angle according to the parameters of the dental bracket, wherein the parameters comprise at least one of the following: a placing quantity, material loss, and close-fitting performance; and selecting a support adding scheme corresponding to the dental bracket according to the printing angle. The 3D printing method of the dental bracket has the advantages of simple processing flow, strong universality and good product quality.

Description

TECHNICAL FIELD

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

[0002] The laser 3D printing technology is currently widely used in various production and manufacturing industries, especially for complex structure products such as thin-walled, multi-hole and multi-cavity structure, and conformal waterway. Compared with the traditional processing method, it has obvious advantages. However, for cobalt-chromium brackets, due to the thin structure and difficult data control, the bracket is prone to deformation, so the current medical brackets such as dental brackets are still more processed by casting or cutting processing.

[0003] The current 3D printing technology for manufacturing dental brackets is to first process the data of the bracket, and then use software to repair and support the designed bracket model. This method is very dependent on the personal experience of the operator during data processing, and the data processing is very complicated, which is not conducive to popularization and industrialized production. SUMMARY

[0004] In view of the above, it is necessary to propose a 3D printing method of a dental bracket to solve the above problems.

[0005] The present application provides a 3D printing method of a dental bracket, comprising:

[0006] Obtaining parameters of a dental bracket, and selecting a printing angle according to the parameters of the dental bracket, wherein the parameters include at least one of the number of placements, material loss, and close-fitting performance;

[0007] According to the printing angle, a support addition scheme corresponding to the dental bracket is selected.

[0008] In a possible implementation, the dental bracket includes a main support surface and a deformable structure, the support addition scheme includes a main support scheme and a deformable structure support scheme, the main support scheme is applied to the main support surface, and the deformable structure support scheme is applied to the deformable structure.

[0009] In a possible implementation, the printing angle is determined according to the included angle of the main support surface relative to the horizontal plane, the printing angle includes a first angle interval, a second angle interval and a third angle interval, the first angle interval includes 0°-15°, the second angle interval includes 15°-45°, and the third angle interval includes 45°-75°.

[0010] In a possible implementation, when the printing angle falls within the first angle interval, the support addition scheme includes:

[0011] cylindrical support is performed on the dental bracket; or

[0012] intelligent support is performed on the dental bracket, and a cylindrical support is performed to strengthen the boundary.

[0013] In a possible implementation, when the printing angle falls within the second angle interval, the support addition scheme comprises:

[0014] cylindrical support is performed on the dental bracket, and a block support is performed to strengthen the boundary; or

[0015] cylindrical support is performed on the dental bracket, and a cylindrical support is performed to strengthen the boundary; or

[0016] intelligent support is performed on the dental bracket, and a cylindrical support is performed to strengthen the boundary.

[0017] In a possible implementation, the support addition scheme further comprises:

[0018] a connecting rod is arranged between the main support surfaces.

[0019] In a possible implementation, when the printing angle falls within the third angle interval, the support addition scheme comprises:

[0020] intelligent support is performed on the dental bracket, and a cylindrical support is performed to strengthen the boundary.

[0021] In a possible implementation, the support addition scheme further comprises:

[0022] polishing is performed on the dental bracket.

[0023] In a possible implementation, the deformable structure support scheme comprises one of double-row cylindrical support, boundary cylindrical support, adjustment angle, or connecting rod strengthening.

[0024] In a possible implementation, the adjustment angle comprises adjusting a deformable angle of the bracket or adjusting a placement angle of the dental bracket.

[0025] The 3D printing method of the dental bracket provided in the present application has the advantages of simple processing flow, strong universality, and good product quality by designing corresponding support addition schemes according to different printing angles of dental brackets with different requirements. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a step flowchart of the 3D printing method of the dental bracket in an embodiment of the present application.

[0027] Figure 2 is Figure 1 the schematic diagram of the printing angle in the 3D printing method of the dental bracket shown in the figure.

[0028] Figure 3 is Figure 1 a top view of the dental bracket in the first angle interval in the 3D printing method of the dental bracket shown in

[0029] Figure 4 is Figure 1 a top view of the dental bracket in the second angle interval in the 3D printing method of the dental bracket shown in

[0030] Figure 5 is Figure 1 a top view of the dental bracket in the third angle interval in the 3D printing method of the dental bracket shown in

[0031] Figure 6 is Figure 1 a schematic diagram of a support adding scheme when the dental bracket is in the second angle interval in the 3D printing method of the dental bracket shown in

[0032] Figure 7 is Figure 1 a schematic diagram of a support adding scheme when the dental bracket is in the third angle interval in the 3D printing method of the dental bracket shown in

[0033] Figure 8 is Figure 1 a schematic diagram of a deformable structure of the dental bracket in the 3D printing method of the dental bracket shown in

[0034] Explanation of main element symbols

[0035] Dental bracket 100

[0036] Deformable structure 10

[0037] Connecting rod 20 DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0039] In the description of the application, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0040] In the description of the application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0043] Please see Figure 1 The first embodiment of the present invention provides a 3D printing method for a dental framework 100, comprising:

[0044] S11: Obtain the parameters of the dental bracket 100 and select the printing angle based on the parameters of the dental bracket 100, wherein the parameters include at least one of the following: number of brackets, material waste, and fit performance.

[0045] It should be explained that the dental framework 100 is characterized by its thin, irregular, and non-standard structure. In actual production, to improve efficiency and save materials, multiple dental frameworks 100 are placed in parallel and printed in a single printing process. The "number of placements" parameter refers to the number of dental frameworks 100 printed in a single printing process. Fitting performance is a parameter that evaluates the degree to which the dental framework 100 fits snugly on the teeth during use. The higher the fitting performance requirement, the more complex the shape and the more details the dental framework 100 contains.

[0046] S12: Select the support addition scheme corresponding to the dental bracket 100 based on the printing angle.

[0047] It should be explained that the printing angle is the tilt angle of the dental bracket 100 relative to the printing platform, such as... Figure 2 Angle 'a' shown represents the printing angle of the dental framework 100. A larger printing angle allows for the production of more dental frameworks 100 in a single cycle, but also increases the requirements for molding and necessitates the reinforcement of more areas. Based on this principle, appropriate support addition schemes are adopted to meet different product needs. Supports are additional structural elements added to the product during 3D printing to facilitate the printing of suspended or steeply angled structures. The stress on the dental framework 100 varies significantly at different printing angles; therefore, employing corresponding support addition schemes is crucial for achieving better printing results, improving efficiency, and reducing waste.

[0048] In one embodiment, the dental framework 100 includes a main support surface and a deformable structure 10, the deformable structure 10 being as follows: Figure 8As shown in the middle frame selection part, the support adding scheme includes a main support scheme and a support scheme for the easily deformed structure 10. The main support scheme is applied to the main support surface, and the support scheme for the easily deformed structure 10 is applied to the easily deformed structure 10. The main support surface is the surface that mainly supports, and the easily deformed structure 10 usually needs to be reinforced. In this embodiment, the respective corresponding schemes are adopted according to the situation of the support surface, so as to achieve a better printing effect.

[0049] In an embodiment, the printing angle is determined according to the included angle of the main support surface relative to the horizontal plane. The printing angle includes a first angle interval, a second angle interval and a third angle interval. The first angle interval includes 0°-15°, the plan view thereof is as shown in Figure 3 ; the second angle interval includes 15°-45°, the plan view thereof is as shown in Figure 4 ; and the third angle interval includes 45°-75°, the plan view thereof is as shown in Figure 5 .

[0050] It needs to be explained that when the printing angle falls within the first angle interval, the support surface of the dental bracket 100 is mostly the main support surface, the support is mostly adopted, the operation is the simplest, and the adhesion performance is the best. When in the second angle interval, the support surface of the dental bracket 100 is partially the main support surface, the proportion is relatively small compared with the first angle interval, the easily deformed structure 10 needs to be strengthened, but at the same time the loss is also reduced. When in the third angle interval, the support surface of the dental bracket 100 is extremely small, the material loss is the least, and the number of simultaneous discharge printing is the most, but the forming difficulty is the highest, and the area needing to be strengthened is the most.

[0051] In an embodiment, when the printing angle falls within the first angle interval, the support adding scheme includes: performing columnar support on the dental bracket 100; or performing intelligent support on the dental bracket 100, and performing columnar support strengthening boundary.

[0052] It needs to be explained that since the support surface of the dental bracket 100 under the first angle interval is basically the main support surface, the first scheme directly adopts columnar support to meet the requirements, and there is no need to supplement the support scheme. The printing software used has a one-key columnar support generation function. According to the angle of the product, the area pressure and the parameters (support density, height, etc.) set by the user, the function automatically adds a single form of columnar support. This scheme is the simplest, and the product can be directly formed by using the function of the software, but the loss is higher.

[0053] In another scheme, the intelligent support is used as the main support scheme, and the columnar support is used to strengthen the boundary. The intelligent support is one of the functions of the printing software. The related parameters are set through the software, the area of the intelligent support is selected and added on the dental bracket 100 (i.e., the area marked by the square in the figure), and the sheet-shaped support is added. Then, the columnar support is used to strengthen the boundary area of the dental bracket 100.

[0054] The first angle interval is usually applied to the occasion where the forming area is sufficient and the aging requirement is high.

[0055] In an embodiment, when the printing angle falls into the second angle interval, the support adding scheme includes: columnar support and block support strengthening the boundary of the dental bracket 100, as shown in FIG. 4B; or columnar support and columnar support strengthening the boundary of the dental bracket 100; or intelligent support and columnar support strengthening the boundary of the dental bracket 100. Figure 6

[0056] The second angle interval is suitable for the occasion where the aging is high, the product quantity is large, and the loss is low.

[0057] In an embodiment, the support adding scheme further includes: connecting rods 20 arranged between the main support surfaces.

[0058] When the dental bracket 100 is in the second angle interval, part of the wearing surface (the wearing surface is the direct contact surface of the user wearing the dental bracket 100) is included in the main support surface. In order to prevent this part of the structure from shrinking and deforming, the connecting rods 20 can be added.

[0059] In an embodiment, when the printing angle falls into the third angle interval, the support adding scheme includes: intelligent support and columnar support strengthening the boundary of the dental bracket 100.

[0060] It needs to be explained that when the dental bracket 100 is in the third angle interval, the forming requirement is the highest, and the main support surface is very small. Therefore, there is no stress concentration and heat conduction possibility in the middle support part, and therefore, more connecting rods 20 need to be added in the middle part, as shown in FIG. 4C. At the same time, since part of the wearing surface is defined as the support surface in the third angle interval, the wearing surface needs to be polished in the subsequent processing. The columnar support will leave small spherical contact points on the contact surface, which will affect the quality of the polishing processing and thus affect the close-fitting performance. Therefore, the area of the columnar support needs to be strictly controlled. Therefore, the scheme adopted is that the intelligent support is dominant, and the columnar support is used for strengthening. Figure 7

[0061] In an embodiment, when the printing angle falls into the third angle interval, the support adding scheme further includes: polishing the dental bracket 100, especially the spherical contact point residues left by the columnar support area.​​

[0062] In one embodiment, the deformable structure 10 support scheme can include at least one of a double columnar support, a boundary columnar support, an angle adjustment, or a connecting rod 20 reinforcement.

[0063] It should be noted that the deformable structure 10 is defined as a support area at some angles, which can lead to difficulty in processing, presence of voids in the structure, etc., and therefore the deformable structure 10 support scheme is used to remove these defects.

[0064] In one embodiment, the angle adjustment includes adjusting the deformable angle of the bracket or adjusting the placement angle of the dental bracket 100.

[0065] Adjusting the deformable angle of the bracket of the dental bracket 100 can increase the support area and reduce the size of the deformable structure 10 that needs to be processed. Or adjusting the placement angle of the dental bracket 100, so that the thicker end instead of the thin-walled side downward, can significantly reduce the risk of deformation of the deformable structure 10.

[0066] The method in this embodiment is written into a script and configured. Compared with the traditional intelligent support, the drawing of the columnar support area range is extremely complex and prone to errors at a larger printing angle. This embodiment can significantly simplify the process when processing dental brackets 100 with different parameters, while improving production efficiency and quality, and achieving optimization of the whole process and results.

[0067] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be included in the present application.

[0068] The above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application.

Claims

1. A 3D printing method for dental frameworks, characterized in that, include: Obtain the parameters of the dental framework and select the printing angle according to the parameters of the dental framework, wherein the parameters include at least one of the following: number of placements, material waste, and fit performance; Based on the printing angle, select the support addition scheme corresponding to the dental bracket; The dental framework includes a main support surface and a deformable structure. The support addition scheme includes a main support scheme and a deformable structure support scheme. The main support scheme is applied to the main support surface, and the deformable structure support scheme is applied to the deformable structure. The printing angle is determined based on the angle between the main support surface and the horizontal plane. The printing angle includes a first angle range, a second angle range, and a third angle range. The first angle range includes 0° to 15°, the second angle range includes 15° to 45°, and the third angle range includes 45° to 75°.

2. The 3D printing method for dental frameworks as described in claim 1, characterized in that, When the printing angle falls within the first angle range, the support addition scheme includes: The dental framework is provided with columnar support; or The dental framework is intelligently supported, and its boundaries are reinforced with columnar support.

3. The 3D printing method for dental frameworks as described in claim 1, characterized in that, When the printing angle falls within the second angle range, the support addition scheme includes: The dental framework is provided with columnar support and block-shaped support to reinforce its boundaries; or The dental framework is provided with columnar support, and the columnar support reinforces the boundary; or The dental framework is intelligently supported, and its boundaries are reinforced with columnar supports.

4. The 3D printing method for dental frameworks as described in claim 3, characterized in that, The support addition scheme also includes: A connecting rod is provided between the main support surfaces.

5. The 3D printing method for dental frameworks as described in claim 1, characterized in that, When the printing angle falls within the third angle range, the support addition scheme includes: The dental framework is intelligently supported, and its boundaries are reinforced with columnar supports.

6. The 3D printing method for dental frameworks as described in claim 5, characterized in that, The support addition scheme also includes: The dental framework is then polished.

7. The 3D printing method for dental frameworks as described in claim 1, characterized in that, The proposed support scheme for easily deformable structures includes one of the following: double-row column support, boundary column support, angle adjustment, or connecting rod reinforcement.

8. The 3D printing method for dental frameworks as described in claim 7, characterized in that, The adjustment angle includes adjusting the angle at which the bracket is prone to deformation or adjusting the placement angle of the dental bracket.

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