CN111938845A - Appliance and manufacturing method thereof - Google Patents
Appliance and manufacturing method thereof Download PDFInfo
- Publication number
- CN111938845A CN111938845A CN202010636716.6A CN202010636716A CN111938845A CN 111938845 A CN111938845 A CN 111938845A CN 202010636716 A CN202010636716 A CN 202010636716A CN 111938845 A CN111938845 A CN 111938845A
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- layer
- appliance
- correction
- tooth
- correction layer
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/08—Mouthpiece-type retainers or positioners, e.g. for both the lower and upper arch
-
- 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
- B33Y80/00—Products made by additive manufacturing
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a corrector and a manufacturing method thereof, wherein the corrector comprises an inner correcting layer and an outer correcting layer; the inner correction layer is elastic, the hardness of the inner correction layer is smaller than that of the outer correction layer, the inner correction layer is fixedly connected with the outer correction layer, and the inner face of the inner correction layer is an anti-slip face. The manufacturing method of the appliance comprises the following steps: scanning and collecting three-dimensional data of the jaw of the patient to obtain a three-dimensional model of the jaw of the patient; designing a correction animation of each tooth according to the three-dimensional model of the jaw; dividing the correcting animation into N steps, and designing N pairs of correcting devices according to the three-dimensional model of the jaw; calculating the movement amount of each step of each tooth according to the orthodontic animation; calculating a correction force required for each tooth at each step based on the movement amount of each tooth at each step; calculating the thickness of the inner correcting layer and the outer correcting layer of each pair of correcting devices at each tooth according to the correcting force required by each tooth in each step; each pair of appliances is printed out in 3D.
Description
Technical Field
The invention relates to the field of orthodontics, in particular to an appliance and a manufacturing method thereof.
Background
The transparent appliance is a continuous appliance, and achieves the aim of correction by continuously moving teeth in a small range. The transparent appliance can control the size of the correction force and the time of the correction force.
The existing common appliance manufacturing method in the market mainly adopts a 3D printing technology to print out a tooth model of a patient, and then a transparent appliance is prepared by a die pressing method. On one hand, the process flow is complicated and the time consumption is long; on the other hand, more than 30-50 sets of tooth models are generally printed according to the treatment period, which increases the production cost and the working intensity.
In addition, the existing transparent appliance has single material and single thickness due to the limitation of the process flow, cannot be individually designed for different symptoms of patients, and cannot simultaneously meet the correction requirements of different symptoms of complex cases. The existing transparent appliance is mainly fixed on teeth by adhering accessories on the teeth so as to achieve the purpose of correction; the attachment adheres to the teeth to assist in tooth movement, increase appliance retention, and the like. However, the attachment to the tooth requires a professional operation by a doctor; if the attachment falls off or is worn, the correction effect is affected, and the expected correction purpose cannot be achieved.
Disclosure of Invention
In order to overcome the disadvantages of the prior art, it is a first object of the present invention to provide an orthosis, and a second object of the present invention is to provide a manufacturing method of orthosis, which can solve the problems of the prior art.
One of the purposes of the invention is realized by adopting the following technical scheme:
an appliance comprises an inner appliance layer and an outer appliance layer; the outer correction layer is located outside the inner correction layer, the inner correction layer is elastic, the hardness of the inner correction layer is smaller than that of the outer correction layer, the inner correction layer is fixedly connected with the outer correction layer, the inner face of the inner correction layer is an anti-skid face, and the inner correction layer can wrap the part of the whole row of teeth at least.
Further, the inner appliance layer is adapted to fill the crevices between teeth.
Further, the inner correction layer and the outer correction layer are integrally formed.
Furthermore, the inner surface of the inner correction layer is provided with raised or concave reticulate patterns.
Further, the inner correction layer is suitable for wrapping the whole row of teeth.
Furthermore, the inner correction layer and the outer correction layer are transparent, the light transmittance of the whole inner correction layer and the whole outer correction layer is more than or equal to 80%, and the clamping force on teeth is more than or equal to 1N.
One of the purposes of the invention is realized by adopting the following technical scheme:
a manufacturing method of an appliance is characterized by comprising the following steps:
s1, scanning and collecting three-dimensional data of the jaw of the patient to obtain a three-dimensional model of the jaw of the patient;
s2, designing a correction animation of each tooth according to the three-dimensional model of the jaw;
s3, dividing the orthodontic animation into N steps, and designing N pairs of orthodontic devices according to the three-dimensional models of the jaws;
s4, calculating the moving amount of each step of each tooth according to the orthodontic animation divided into N steps;
s5, calculating the correction force required by each tooth in each step according to the moving amount of each step of each tooth;
s6, calculating the thickness of the inner correcting layer and the outer correcting layer of each pair of correcting devices at each tooth according to the correcting force required by each tooth in each step;
and S7, printing each appliance in a 3D mode.
Further, the step S7 includes:
and S71, printing each pair of appliance by using a multi-nozzle 3D printing device.
Further, in step S6, the thickness of the inner correction layer is 0.5-1 mm.
Further, in step S6, the inner correction layer has a shore hardness of 50A to 60D, and the outer correction layer has a shore hardness of 55 to 90D.
Compared with the prior art, the invention has the beneficial effects that:
(1) the appliance of the invention can be fixed with the teeth only through the anti-slip surface of the inner appliance layer without adhering accessories on the teeth, thereby reducing the working strength of doctors. In addition, the appliance provided by the invention is divided into the inner correction layer and the outer correction layer, and the hardness of the inner correction layer is smaller than that of the outer correction layer, so that the outer correction layer can play a role of supporting the inner correction layer, the inner correction layer can be worn more comfortably by a user, the inner correction layer has elasticity and can have a better wrapping effect on teeth, and therefore, a larger correction force is provided, the correction effect is better, and the same elastic correction layer can also be worn more comfortably.
(2) The manufacturing method of the appliance provided by the invention has the advantages that the appliance is directly printed without printing a dental cast, so that the production cost is reduced, and the manufacturing method of the appliance can also be used for carrying out personalized design on the appliance, specifically, the thickness of the inner correction layer and the thickness of the outer correction layer of each pair of appliances at each tooth can be calculated according to the correction force required by each tooth in each step, namely, the thicknesses of the same auxiliary appliance at different teeth are different, so that different correction forces can be provided for each tooth, and thus, different symptoms of the teeth of the same patient can be corrected, and the correction requirements of different symptoms of complex cases are met.
Drawings
FIG. 1 is a cross-sectional view of the present invention.
In the figure: 1. an inner correction layer; 2. an outer correction layer.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, an appliance provided by an embodiment of the present invention is shown, which includes: an inner correction layer 1 and an outer correction layer 2; outer layer 2 of correcting is located interior correction layer 1 outside, and interior correction layer 1 elasticity, and the hardness ratio of correcting layer 1 in is little than the hardness of correcting layer 2 outward, and interior correction layer 1 and the outer fixed connection of correcting between layer 2, the inner face of correcting layer 1 in is the antiskid face, and interior correction layer 1 can wrap up the part of whole row tooth at least.
Through the arrangement mode, the appliance can be fixed with the teeth only through the anti-slip surface of the inner correction layer 1 without adhering accessories on the teeth, so that the working strength of a doctor can be reduced. In addition, the appliance is divided into the inner correction layer 1 and the outer correction layer 2, and the hardness of the inner correction layer 1 is smaller than that of the outer correction layer 2, so that the outer correction layer 2 can play a role of supporting the inner correction layer 1, the inner correction layer 1 can be worn by a user more comfortably, and the inner correction layer 1 has elasticity and can have a better wrapping effect on teeth, so that a larger correction force is provided, and the correction effect is better; likewise, the elastic correction layer can be more comfortable to wear.
Preferably, the inner appliance layer 1 is adapted to fill the crevices between teeth. Through such a setting mode, the fixing effect of the appliance and the teeth can be further improved.
Preferably, the inner corrective layer 1 is integrally formed with the outer corrective layer 2. The integral forming process can reduce the process steps and the production cost.
Preferably, the inner face of the inner corrective layer 1 is provided with raised or recessed webbing. Namely, the anti-slip surface of the inner correction layer 1 can be realized by arranging convex or concave reticulate patterns on the inner surface of the inner correction layer 1.
Preferably, the inner corrective layer 1 is adapted to wrap around the entire row of teeth. By the mode, the teeth can be moved under better stress, so that a better correction effect is achieved.
Preferably, the inner correction layer 1 and the outer correction layer 2 are transparent, the light transmittance of the whole of the inner correction layer 1 and the whole of the outer correction layer 2 is more than or equal to 80%, and the clamping force on teeth is more than or equal to 1N. The transparent inner correction layer 1 and the transparent outer correction layer 2 can enable the correction device to be more attractive in wearing. It should be noted that, the clamping force to the teeth refers to the clamping force of the inner correction layer 1 and the outer correction layer 2 to the teeth as a whole, and the clamping force is greater than or equal to 1N to ensure the fixing effect of the correction device to the teeth.
A manufacturing method of the appliance comprises the following steps: s1, scanning and collecting three-dimensional data of the jaw of the patient to obtain a three-dimensional model of the jaw of the patient; s2, designing a correction animation of each tooth according to the three-dimensional model of the jaw; s3, dividing the orthodontic animation into N steps, and designing N pairs of orthodontic devices according to the three-dimensional models of the jaws; s4, calculating the moving amount of each step of each tooth according to the orthodontic animation divided into N steps; s5, calculating the correction force required by each tooth in each step according to the moving amount of each step of each tooth; s6, calculating the thickness of the inner correction layer 1 and the outer correction layer 2 of each pair of the appliances at each tooth according to the correction force required by each tooth in each step; and S7, printing each appliance in a 3D mode.
In the above step S1, the apparatus for scanning and acquiring the dental jaw of the patient is the prior art and will not be described herein too much. In step S2, an animation of the orthodontic treatment of each tooth is designed, which is understood to be an animation of the process of each tooth changing from its original position to the correct position. In step S3, N may be generally 30-50, and the appliance is designed based on a three-dimensional model of the teeth, which may also be implemented by existing software.
The manufacturing method of the appliance provided by the invention has the advantages that the printing of the tooth model is not needed, but the appliance is directly printed, so that the production cost is reduced, in addition, the appliance can be further subjected to personalized design through the manufacturing method of the appliance provided by the invention, specifically, the thickness of the inner correction layer 1 and the thickness of the outer correction layer 2 of each pair of appliances at each tooth can be calculated according to the correction force required by each tooth in each step, namely, the thickness of the same attached appliance at different teeth is different, so that different correction forces can be provided for each tooth, so that different symptoms of the teeth of the same patient can be corrected, and the correction requirements of different symptoms of complex cases are met.
Preferably, step S7 includes: and printing each pair of the orthodontic devices by using the multi-nozzle 3D printing equipment. In this way, printing efficiency can be improved. Specifically, the slicing processing, the layer-by-layer scanning printing and the like in the 3D printing process are common knowledge in the 3D printing, and are not described in detail here.
Preferably, in step S6, the thickness of the inner correction layer 1 is 0.5-1mm, the shore hardness of the inner correction layer 1 is 50A-60D, and the shore hardness of the outer correction layer 2 is 55-90D.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An orthopedic appliance is characterized by comprising an inner orthopedic layer and an outer orthopedic layer; the outer correction layer is located outside the inner correction layer, the inner correction layer is elastic, the hardness of the inner correction layer is smaller than that of the outer correction layer, the inner correction layer is fixedly connected with the outer correction layer, the inner face of the inner correction layer is an anti-skid face, and the inner correction layer can wrap the part of the whole row of teeth at least.
2. The appliance of claim 1, wherein the inner appliance layer is adapted to fill the crevices between teeth.
3. The appliance of claim 1, wherein the inner and outer orthotic shells are integrally formed.
4. The appliance of claim 1, wherein the inner face of the inner appliance layer is provided with raised or indented webbing.
5. The appliance of claim 1, wherein the inner appliance layer is adapted to wrap around an entire row of teeth.
6. The appliance of claim 1, wherein the inner and outer correction layers are transparent, and the overall light transmittance of the inner and outer correction layers is greater than or equal to 80%, and the gripping force on the teeth is greater than or equal to 1N.
7. A method of manufacturing the orthosis of any of claims 1-6, comprising the steps of:
s1, scanning and collecting three-dimensional data of the jaw of the patient to obtain a three-dimensional model of the jaw of the patient;
s2, designing a correction animation of each tooth according to the three-dimensional model of the jaw;
s3, dividing the orthodontic animation into N steps, and designing N pairs of orthodontic devices according to the three-dimensional models of the jaws;
s4, calculating the moving amount of each step of each tooth according to the orthodontic animation divided into N steps;
s5, calculating the correction force required by each tooth in each step according to the moving amount of each step of each tooth;
s6, calculating the thickness of the inner correcting layer and the outer correcting layer of each pair of correcting devices at each tooth according to the correcting force required by each tooth in each step;
and S7, printing each appliance in a 3D mode.
8. The method of manufacturing the appliance of claim 7, wherein the step S7 includes:
and S71, printing each pair of appliance by using a multi-nozzle 3D printing device.
9. The method of claim 7, wherein the inner appliance layer has a thickness of 0.5 mm to 1mm in step S6.
10. The method of claim 7, wherein the inner appliance layer has a durometer hardness of 50A to 60D and the outer appliance layer has a durometer hardness of 55 to 90D in step S6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010636716.6A CN111938845A (en) | 2020-07-03 | 2020-07-03 | Appliance and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010636716.6A CN111938845A (en) | 2020-07-03 | 2020-07-03 | Appliance and manufacturing method thereof |
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| CN111938845A true CN111938845A (en) | 2020-11-17 |
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| CN202010636716.6A Pending CN111938845A (en) | 2020-07-03 | 2020-07-03 | Appliance and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102244439B1 (en) * | 2020-12-10 | 2021-04-29 | 주식회사 그래피 | Transparent aligner with increased correction power |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009201916A (en) * | 2008-02-29 | 2009-09-10 | Tetsuji Yamanouchi | Orthodontic device and its manufacturing method |
| CN103284805A (en) * | 2013-05-28 | 2013-09-11 | 上海正雅齿科科技有限公司 | Manufacturing method of elastic force/ and push force module type dentognathic deformity appliance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102244439B1 (en) * | 2020-12-10 | 2021-04-29 | 주식회사 그래피 | Transparent aligner with increased correction power |
| WO2022124509A1 (en) * | 2020-12-10 | 2022-06-16 | 주식회사 그래피 | Transparent orthodontic appliance having increased correctability |
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Application publication date: 20201117 |
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