CN112757645A - Method for 3D printing of invisible appliance - Google Patents
Method for 3D printing of invisible appliance Download PDFInfo
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- CN112757645A CN112757645A CN202011553296.1A CN202011553296A CN112757645A CN 112757645 A CN112757645 A CN 112757645A CN 202011553296 A CN202011553296 A CN 202011553296A CN 112757645 A CN112757645 A CN 112757645A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a method for 3D printing an invisible appliance, belonging to the technical field of 3D printing appliances, comprising the following steps: acquiring a three-dimensional data file of orthodontic teeth; expanding a preset thickness value to the peripheral outline of the three-dimensional data file of the orthodontic tooth according to the obtained three-dimensional data file of the orthodontic tooth, and obtaining the expanded three-dimensional data file of the orthodontic tooth; acquiring a three-dimensional data file of the appliance to be processed according to the acquired three-dimensional data file of the expanded orthodontic tooth; inputting the data file of the step into 3D printing software, and controlling the 3D printing software to output a corresponding processing program; and the 3D printer prints the appliance according to the data file and the parameters in the step and the processing program output by the 3D printing software. According to the method for 3D printing the invisible appliance, the invisible appliance is directly manufactured through the 3D printing technology, the production process flow is reduced, manpower and material resources are greatly saved, the manufacturing precision is improved, and natural resources are saved.
Description
Technical Field
The invention relates to the technical field of 3D printing appliances, in particular to a method for 3D printing an invisible appliance.
Background
At present, the production of the invisible appliance is generally realized by using a dental diaphragm to carry out hot press molding on the basis of 3D printing and producing a male die, and then trimming the edge of the diaphragm to be matched with the contour of the dental gear.
The existing production method adopts a male die and a dental film for hot press molding, and the process flow in the male die manufacturing and hot press molding process engineering is complex, so that the final manufacturing precision is low and the material consumption is large; subsequent trimming of the film until the film is matched with the profile of the tooth gear, no matter manual or equipment processing is adopted, the precision is low, a large amount of manpower and material resources are consumed, and the trimmed excess materials cause irreversible resource waste.
Disclosure of Invention
Therefore, the embodiment of the invention provides a method for 3D printing of an invisible appliance, which aims to solve the technical problems that in the existing method for manufacturing the invisible appliance by adopting a male die and a dental pellicle hot-press forming, the subsequent trimming of the pellicle is matched with the contour of a dental gear, no matter manual or equipment processing is adopted, the precision is low, a large amount of manpower and material resources are consumed, and the sheared excess material causes irreversible resource waste.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to an embodiment of the invention, a method for 3D printing of an invisible appliance is provided, which includes:
step S1, acquiring a three-dimensional data file of the orthodontic tooth;
step S2, according to the obtained three-dimensional data file of the orthodontic tooth, expanding a preset thickness value to the peripheral outline thereof, and obtaining the expanded three-dimensional data file of the orthodontic tooth;
step S3, acquiring a three-dimensional data file of the appliance to be processed according to the acquired three-dimensional data file of the expanded orthodontic tooth;
step S4, inputting the data file of step S3 into 3D printing software, and controlling the 3D printing software to output a corresponding processing program;
and step S5, the 3D printer prints the appliance according to the data file and the parameters in the step S4 and the processing program output by the 3D printing software.
Further, in step S2, the preset thickness value ranges from 0.5 to 1.2 mm.
Further, in step S2, the thickness of the non-orthodontic area of the anterior teeth ranges from 0.5 to 0.8mm, the large thickness of the torsion moment in the area of tooth # three ranges from 0.7 to 1.2mm, and the thickness of the posterior teeth-retaining area ranges from 0.7 to 1.0 mm.
Further, in step S3, according to the occlusal maxillofacial removal, the free hook region, the windowing and tongue-side appliance grooving correction requirements, boolean operations are performed on the corresponding structures and the data files and parameters in step S3 to obtain three-dimensional data files of appliances to be processed.
Further, in step S4, the 3D printing software is controlled to output the corresponding processing program according to the preset mechanical effect matching parameters in cooperation with the filamentous material fused deposition parameters and the parameters of the light-cured resin and the curing lamp.
Further, in step S5, a nozzle at the front end of the 3D printer performs fused deposition of PET, TPU or a composite material, a nozzle at the middle part sprays light-cured resin, and a UV lamp irradiates the light-cured resin to cure the resin in real time at the rear end.
Further, in step S5, the heights of the middle nozzle and the rear UV lamp of the 3D printer are the same, and the assembly height is half a print layer thickness lower than the front nozzle.
Further, in step S5, the contact point between the 3D printer and the bottom plate or the thermal bed is one or more points, the model is taken out after the printing is completed, and the contact point is polished, so that the printing of the appliance is completely realized.
The embodiment of the invention has the following advantages:
the invisible orthodontic device is directly manufactured by a 3D printing technology, so that the production process flow is reduced, the manpower and material resources are greatly saved, the manufacturing precision is improved, and natural resources are saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a schematic flow chart of a method for 3D printing an invisible appliance according to an embodiment of the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
As shown in fig. 1, a method for 3D printing an invisible appliance according to an embodiment of the present invention includes:
step S1, acquiring a three-dimensional data file of the orthodontic tooth;
step S2, according to the obtained three-dimensional data file of the orthodontic tooth, expanding a preset thickness value to the peripheral outline thereof, and obtaining the expanded three-dimensional data file of the orthodontic tooth;
step S3, acquiring a three-dimensional data file of the appliance to be processed according to the acquired three-dimensional data file of the expanded orthodontic tooth;
step S4, inputting the data file of step S3 into 3D printing software, and controlling the 3D printing software to output a corresponding processing program;
and step S5, the 3D printer prints the appliance according to the data file and the parameters in the step S4 and the processing program output by the 3D printing software.
According to the method for 3D printing the invisible appliance, the invisible appliance is directly manufactured through the 3D printing technology, the production process flow is reduced, manpower and material resources are greatly saved, the manufacturing precision is improved, and natural resources are saved. The printing effect and the mechanical expression effect are controlled more accurately and effectively by combining the filamentous material fused deposition parameters and the parameters of the light-cured resin and the curing lamp, expressing the processing parameters of the target accurate output material and equipment according to mechanics, controlling the processing path, the heating temperature of the spray head, the size of the spray head nozzle, the moving speed of the spray head, the UV light energy in real time and the like.
In some embodiments, optionally, in step S2, the preset thickness value ranges from 0.5 to 1.2 mm. The thickness can be conveniently controlled.
Further, in step S2, the thickness of the non-corrected front tooth region ranges from 0.5 to 0.8mm, the large torsion moment region ranges from 0.7 to 1.2mm in the third tooth region, and the thickness of the retained rear tooth region ranges from 0.7 to 1.0 mm. Namely, the thickness of the non-correction area of the anterior teeth is thinner, the thickness of the large torsion moment area of the third teeth is thicker, and the thickness of the retention area of the posterior teeth is moderate.
In the above embodiment, optionally, in step S3, based on the occlusal and maxillofacial removal, the free hook region, the windowing and the tongue-side appliance grooving correction requirements, boolean operations are performed on the corresponding structures and the data files and parameters in step S3 to obtain three-dimensional data files of appliances to be processed. The thickness of the mechanical property of the appliance can be effectively controlled, and in addition, the accurate expression of combining other appliances and contents is realized.
In some embodiments, optionally, in step S4, the 3D printing software is controlled to output the corresponding processing program according to the preset mechanical effect matching parameters in cooperation with the filamentous material fused deposition parameters and the parameters of the light-cured resin and the curing lamp.
In some embodiments, optionally, in step S5, a nozzle at the front end of the 3D printer performs the fused deposition of PET, TPU or composite material, a nozzle at the middle sprays the light-curable resin, and a UV lamp irradiates the light-curable resin at the rear end for curing. Optionally, in step S5, the heights of the middle nozzle and the back end UV lamp of the 3D printer are the same, and the assembly height is half a print layer thickness lower than the front end nozzle. The printing effect and the mechanical expression effect are controlled more accurately and effectively according to the processing parameters of the output material and the equipment which are expressed as the target accurately, the processing path, the heating temperature of the spray head, the size of the spray nozzle, the moving speed of the spray head, the UV light energy real-time control and the like.
The UV lamp is an ultraviolet lamp, and UV is an english abbreviation of ultraviolet (Ultra-Violet Ray); PET, polyethylene terephthalate (PET), polyethylene terephthalate (PET for short); TPU (thermoplastic polyurethanes) thermoplastic polyurethane elastomer is also called thermoplastic polyurethane rubber, is abbreviated as TPU, and is An (AB) n type block linear polymer.
In some embodiments, optionally, in step S5, the contact point between the 3D printer and the bottom plate or the thermal bed is one or more points, the model is taken out after the printing is completed, and the contact point is ground, that is, the printing of the appliance is completely realized. In the step, the printing operation does not completely depend on a hot bed or a bottom plate, the contact point position only needs to be based on the initial 1 point position, the contact point position generated in the processing process has no requirement, the processing operation is convenient and fast, and the requirement on space is very low.
In one implementation, as shown in fig. 1, a method for 3D printing an invisible appliance provided by the present application includes:
step S1, a three-dimensional data file of the orthodontic tooth is obtained, wherein the three-dimensional data file includes attachments and the like, and the obtaining method can be the same as the obtaining method of the orthodontic tooth in the prior art.
Step S2, according to the obtained three-dimensional data file of the orthodontic tooth, extending a preset thickness value to the peripheral outline thereof, wherein the preset thickness value range is 0.5mm to 1.2mm, meanwhile, the thickness value range of the orthodontic non-orthodontic area is 0.5mm to 0.8mm, the large thickness value range of the torsional moment in the area of the third tooth is 0.7 mm to 1.2mm, and the thickness value range of the rear tooth retention area is 0.7 mm to 1.0mm, and obtaining the three-dimensional data file of the orthodontic tooth after extension;
step S3, according to the obtained three-dimensional data file of the extended orthodontic tooth, specifically, according to the orthodontic requirements of occlusal and maxillofacial removal, free hook area, windowing and tongue-side appliance grooving in the prior art, boolean operations are performed on the corresponding structure and the data file and parameters in step S3 to obtain the three-dimensional data file of the appliance to be processed;
step S4, inputting the data file of the step S3 into 3D printing software, optionally, on the basis of the data of the step S3, matching with the melting deposition parameters of the filamentous material and the parameters of the light-cured resin and the curing lamp, and controlling the 3D printing software to output a corresponding processing program according to preset mechanical effect matching parameters;
and S5, printing the corrector by the 3D printer according to the data file and the parameters in the step S4 and the processing program output by the 3D printing software, specifically, carrying out fusion deposition of PET, TPU or composite materials by a nozzle at the front end of the 3D printer, spraying photocureable resin by a nozzle at the middle, immediately irradiating the photocureable resin by a UV lamp at the rear end for curing, wherein the heights of the UV lamp at the middle nozzle and the UV lamp at the rear end of the 3D printer are the same, the assembly height is lower than the half printing layer thickness of the nozzle at the front end, the contact point between the 3D printer and the bottom plate or the hot bed is one or more points, taking out the model after printing is finished, polishing the contact point, and completely correcting and realizing the printing of the corrector.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A method for 3D printing of an invisible appliance is characterized by comprising the following steps:
step S1, acquiring a three-dimensional data file of the orthodontic tooth;
step S2, according to the obtained three-dimensional data file of the orthodontic tooth, expanding a preset thickness value to the peripheral outline thereof, and obtaining the expanded three-dimensional data file of the orthodontic tooth;
step S3, acquiring a three-dimensional data file of the appliance to be processed according to the acquired three-dimensional data file of the expanded orthodontic tooth;
step S4, inputting the data file of step S3 into 3D printing software, and controlling the 3D printing software to output a corresponding processing program;
and step S5, the 3D printer prints the appliance according to the data file and the parameters in the step S4 and the processing program output by the 3D printing software.
2. The method of 3D printing the invisible appliance, according to claim 1, wherein in the step S2, the preset thickness value ranges from 0.5mm to 1.2 mm.
3. The method for 3D printing the invisible appliance according to claim 2, wherein in step S2, the thickness of the non-correction area of the anterior teeth ranges from 0.5 to 0.8mm, the large thickness of the torsional moment in the area of the third teeth ranges from 0.7 to 1.2mm, and the thickness of the retention area of the posterior teeth ranges from 0.7 to 1.0 mm.
4. The method for 3D printing the invisible appliance, according to the claim 1, wherein in the step S3, according to the correction requirements of occlusal maxillofacial removal, free hook area, windowing and tongue side appliance grooving, Boolean operation is performed on the corresponding structure and the data file and parameters in the step S3 to obtain the three-dimensional data file of the appliance to be processed.
5. The method for 3D printing the invisible appliance according to claim 1, wherein in step S4, the 3D printing software is controlled to output a corresponding processing program according to preset mechanical effect matching parameters in accordance with the filamentous material fused deposition parameters and the parameters of the light-cured resin and the curing lamp.
6. The method for 3D printing the invisible appliance according to claim 1, wherein in step S5, a nozzle at the front end of the 3D printer performs melt deposition of PET, TPU or composite material, a nozzle at the middle part sprays light-cured resin, and a UV lamp irradiates the light-cured resin instantly at the rear end for curing.
7. The method for 3D printing the invisible appliance, according to claim 6, wherein in step S5, the heights of the middle nozzle and the rear UV lamp of the 3D printer are the same, and the assembly height is half of the printing layer thickness lower than that of the front nozzle.
8. The method for 3D printing the invisible appliance, according to claim 1, is characterized in that in step S5, the contact point between the 3D printer and the bottom plate or the hot bed is one or more points, after the printing is completed, the model is taken out, and the contact point is ground, so that the printing of the appliance is completely realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011553296.1A CN112757645A (en) | 2020-12-24 | 2020-12-24 | Method for 3D printing of invisible appliance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011553296.1A CN112757645A (en) | 2020-12-24 | 2020-12-24 | Method for 3D printing of invisible appliance |
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| CN112757645A true CN112757645A (en) | 2021-05-07 |
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| CN202011553296.1A Pending CN112757645A (en) | 2020-12-24 | 2020-12-24 | Method for 3D printing of invisible appliance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115302777A (en) * | 2022-07-22 | 2022-11-08 | 安徽工程大学 | 3D printing manufacturing method for customized auricle orthotics |
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| CN105769356A (en) * | 2016-04-28 | 2016-07-20 | 华南理工大学 | Manufacturing method for photocuring additive material of personalized bracket-free invisible appliance |
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| CN111251597A (en) * | 2020-01-17 | 2020-06-09 | 北京大学口腔医学院 | Integrated design and 3D printing method of accurate force control appliance |
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2020
- 2020-12-24 CN CN202011553296.1A patent/CN112757645A/en active Pending
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| US20150282913A1 (en) * | 2012-07-06 | 2015-10-08 | Peter John Zegarelli | Oral appliance for delivery of medicaments and/or other substances |
| CN105266906A (en) * | 2015-11-19 | 2016-01-27 | 肖然 | Manufacturing method of invisible tooth correcting treatment devices |
| CN105769356A (en) * | 2016-04-28 | 2016-07-20 | 华南理工大学 | Manufacturing method for photocuring additive material of personalized bracket-free invisible appliance |
| CN105919682A (en) * | 2016-06-06 | 2016-09-07 | 西安博恩生物科技有限公司 | Rapid forming production method of personalized customization concealed teeth correcting equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115302777A (en) * | 2022-07-22 | 2022-11-08 | 安徽工程大学 | 3D printing manufacturing method for customized auricle orthotics |
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