CN114681076B - Shape memory invisible appliance based on bi-component material and manufacturing method thereof - Google Patents
Shape memory invisible appliance based on bi-component material and manufacturing method thereof Download PDFInfo
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- CN114681076B CN114681076B CN202210208364.3A CN202210208364A CN114681076B CN 114681076 B CN114681076 B CN 114681076B CN 202210208364 A CN202210208364 A CN 202210208364A CN 114681076 B CN114681076 B CN 114681076B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 title claims abstract description 32
- 210000004513 dentition Anatomy 0.000 claims abstract description 28
- 230000036346 tooth eruption Effects 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000013461 design Methods 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims abstract description 10
- 230000009477 glass transition Effects 0.000 claims abstract description 10
- 210000000214 mouth Anatomy 0.000 claims abstract description 9
- 238000010146 3D printing Methods 0.000 claims abstract description 8
- 238000004458 analytical method Methods 0.000 claims abstract description 8
- 239000012781 shape memory material Substances 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims abstract description 7
- 229920001244 Poly(D,L-lactide) Polymers 0.000 claims description 22
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 19
- 239000004626 polylactic acid Substances 0.000 claims description 19
- 229910052586 apatite Inorganic materials 0.000 claims description 17
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 12
- 238000007731 hot pressing Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical compound CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 3
- 238000002591 computed tomography Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 210000004746 tooth root Anatomy 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012937 correction Methods 0.000 description 18
- 229920000431 shape-memory polymer Polymers 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 2
- 230000006386 memory function Effects 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 206010061274 Malocclusion Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 230000001055 chewing effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011960 computer-aided design Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 210000003054 facial bone Anatomy 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 201000001245 periodontitis Diseases 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
Classifications
-
- 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
- A61C7/002—Orthodontic computer assisted systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
-
- A61B6/512—
Abstract
The invention discloses a shape memory invisible appliance design method and an appliance based on a bi-component material, which relate to the technical field of tooth invisible appliances, in particular to a shape memory invisible appliance design method and an appliance based on a bi-component material, and comprise the following steps: s1, preparing an appliance material; s2, collecting oral cavity data of a patient; s3, biomechanical analysis of tooth movement; s4, designing an orthodontic treatment scheme; s5, manufacturing a designed dentition physical model by using a 3D printing technology; s6, manufacturing a membrane made of a shape memory material; s7, manufacturing an invisible appliance; s8, using an appliance. The bi-component material of the invention has ideal shape recovery performance, glass transition temperature near the oral temperature of human body and ideal shape recovery force at the oral temperature, and has more continuous and stable tooth holding force and higher elastic modulus than the traditional invisible appliance, and the orthodontic effect is obviously improved.
Description
Technical Field
The invention relates to the technical field of tooth invisible correction devices, in particular to a method for manufacturing a shape memory invisible correction device based on a bi-component material and the correction device.
Background
The orthodontic correction technology is characterized in that the teeth are arranged in a malformed manner or misplaced manner by the pointers, the fixed correction device or the bracket-free invisible correction device is utilized, correction force and correction moment are applied to the teeth, balance and coordination among facial bones, the teeth and maxillofacial muscles are adjusted, and the purposes of improving facial, aligning dentition and improving chewing efficiency are achieved through treatment for a period of time. Orthodontic treatment can well improve the appearance image of a treated object, so that the self-confidence of individuals in social communication is improved, and an active optimistic human body attitude is established.
The existence of the bracket and the arch wire in the traditional fixed correction technology can lead to the strong uncomfortable feeling of the patient in the orthodontic treatment process, and secondly, the oral cavity is difficult to keep clean due to inconvenient cleaning, and periodontitis is easy to cause. Furthermore, the presence of brackets and archwires can also affect aesthetics. Although the lingual correction technology places the bracket and the arch wire on the lingual side of the dental crown to hide the appliance, the appliance is more difficult to install, easy to fall off and not strong in applicability.
With the gradual maturity of 3D printing and computer aided design technology, the bracket-free invisible correction technology is generated. Most of traditional invisible appliance materials utilize elastic deformation to generate an appliance force which is continuously applied to teeth to be moved, so that the purpose of appliance is achieved. However, since the elastic material is easy to fatigue, the correction force applied to the teeth by the appliance can be larger in the initial wearing stage, the patient has stronger uncomfortable feeling, then the correction force is attenuated rapidly, the tooth movement effect is reduced rapidly, so that the invisible appliance has a plurality of barriers to correction of complex malocclusion, and the adaptation diseases are limited.
Shape memory polymer SMPs, such as PU, have proven to have good promise in medical applications. The appliance made of the shape memory polymer material can be conveniently worn in the oral cavity of a patient after being softened under a certain temperature condition, the appliance has the shape memory function to enable the appliance to gradually recover to the original shape in the memory of the appliance under the oral cavity temperature environment of the patient so as to push the dentition to move, the process is active, the conventional invisible appliance is not required to be frequently replaced, a lot of trouble is omitted for the patient, the cost is reduced, and the stability of the capacity can be ensured more accurately than the conventional elastic material invisible appliance due to active force application. However, although SMP has good biocompatibility and good shape memory properties, it has a low mechanical strength and elastic modulus, provides a small shape restoring force, has only a good overall dentition gripping effect, and provides a restoring force that does not guarantee a good movement of the teeth. The ideal bracket-free groove-shaped memory appliance needs to have higher shape recovery rate, glass transition temperature near the oral temperature of a human body and ideal elastic modulus at the oral temperature, so that finding a proper SMP material is important for manufacturing the shape memory invisible appliance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a manufacturing method of a shape memory invisible appliance with a bi-component material, which can provide larger shape restoring force and shape restoring rate and enable teeth to continuously, stably and accurately move in an oral cavity, and the appliance.
In order to achieve the above purpose, the invention is realized by the following technical scheme: a shape memory invisible appliance manufacturing method and an appliance based on a bi-component material comprise the following steps:
s1, preparing an appliance material;
s2, collecting oral cavity data of a patient;
s3, biomechanical analysis of tooth movement;
s4, designing an orthodontic treatment scheme;
s5, manufacturing a designed dentition physical model by using a 3D printing technology;
s6, manufacturing a membrane made of a shape memory material;
s7, manufacturing an invisible appliance;
s8, using an appliance.
Optionally, the step S1 specifically includes the following steps:
s11, dissolving: the method comprises the steps of weighing racemic polylactic acid PDLLA and apatite HA according to mass parts in advance, dissolving the pre-weighed racemic polylactic acid PDLLA in hydrogen chloride under stirring, and dissolving the apatite HA in ethanol for 10min by a high-speed homogenizer.
S12, preliminary mixing: slowly dripping the apatite HA and the ethanol solution into the stirred racemized polylactic acid PDLLA polymer solution by using a pipette, continuously stirring the emulsion for at least 4 hours in a sealing process, so that the racemized polylactic acid PDLLA and the apatite HA are further and uniformly mixed, and the ratio of the racemized polylactic acid PDLLA to the HA can be between 2 and 2.5.
S13, evaporating: after stirring in air, the solvent slowly formed some flocs, mainly racemic polylactic acid PDLLA and apatite HA composite, at the bottom of the beaker.
S14, drying: the composite material of step S13 is dried under vacuum.
S15, further mixing: and (2) uniformly mixing tributyl citrate TBC with the composite material in the step (S14) in a stirrer to prepare the shape memory material meeting the requirements.
Optionally, the step S2 specifically includes the following steps: and directly scanning by using an intraoral scanner to obtain dental crown data of a patient, and performing CT scanning on the patient to obtain jaw and dental root data of the patient.
Optionally, the step S3 specifically includes the following steps: and comparing the tooth model after tooth arrangement with the original dentition, performing biomechanical analysis on tooth movement, analyzing the stress application requirements of each area of the dentition, and determining the local area with larger required force or moment and the specific data of the required force and moment.
Optionally, the step S4 specifically includes the following steps:
s41, carrying out scheme design on orthodontic treatment teeth, and carrying out motion constraint, collision constraint and tooth spacing constraint on the orthodontic treatment teeth, wherein the tooth arrangement result specifically comprises tooth extraction positions and numbers, tooth movement or rotation, anchorage design, accessory design and the like;
s42, determining restoring force provided by the appliance matrix according to the constitutive model of the shape memory high polymer;
s43, determining the treatment period of the single appliance base body according to the tooth movement amount and the restoring force of the appliance base body, so as to obtain the dentition model of each stage of orthodontic treatment.
Optionally, the step S5 specifically includes the following steps: and inputting the dentition model into a three-dimensional printer by using an STL data format to carry out three-dimensional printing.
Optionally, the step S6 specifically includes the following steps: and (2) manufacturing the material manufactured in the step (S1) into a diaphragm, wherein the glass transition temperature of the material is about 35 ℃, and the completely dried composite material is pressed in a mould for 5 minutes at 105 ℃ by using a hot press, and the mould is designed into a standard circular diaphragm with the diameter of 50 mm and the thickness of 1 mm.
Optionally, the step S7 specifically includes the following steps:
s71, processing the initial shape of the appliance by using a dentition model of a second stage on a hot-pressing film forming machine at a temperature of 100-120 ℃;
s72, performing secondary molding on the once-molded invisible appliance, reducing the temperature to about 50-70 ℃ on a hot-pressing film molding machine, performing hot-pressing film on the first-stage dental row on the first-stage appliance, and reducing the temperature to below the glass transition temperature under the condition of keeping external load to process the secondarily-molded invisible appliance.
Optionally, the step S8 specifically includes the following steps:
s81, when a dentist uses the shape memory invisible appliance after the secondary molding, the shape memory invisible appliance is worn on the dentition of a patient;
s82, gradually recovering the teeth to a memory initial state under the oral temperature environment, and providing correction force required by tooth movement, so that the purpose of correction is achieved.
An appliance is a shape memory invisible appliance designed based on a bi-component material.
The invention provides a shape memory invisible appliance manufacturing method based on a bi-component material and an appliance, which have the following beneficial effects:
the invention provides a shape memory bracket-free invisible appliance which takes racemized polylactic acid PDLLA and apatite HA as raw materials based on the performance of a thermotropic shape memory polymer.
The PDLLA has better mechanical property, but has poorer shape recovery rate, and a stationary phase and a reversible phase can be generated when the amorphous PDLLA polymer is compounded with crystalline calcium phosphate particles, so that the bi-component material has better shape memory function; the PDLLA has a glass transition temperature of about 50-60 ℃ and poor toughness, and the proportion of the plasticizer tributyl citrate TBC in the bi-component material is adjusted, so that the bi-component material has ideal shape recovery performance, the glass transition temperature near the oral temperature of a human body and ideal shape recovery force at the oral temperature, and the orthodontic effect is remarkably improved because the bi-component material bracket-free invisible appliance has more continuous and stable tooth holding force and higher elastic modulus than the traditional invisible appliance.
Drawings
FIG. 1 is a schematic diagram of a process flow for preparing a material according to the present invention;
FIG. 2 is a schematic view of a first and second stage dentition configuration according to the present invention;
FIG. 3 is a schematic perspective view of an invisible appliance according to the present invention;
fig. 4 is a schematic bottom view of the invisible appliance of the present invention.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
The invention provides a technical scheme that: a shape memory invisible appliance manufacturing method and an appliance based on a bi-component material comprise the following steps:
s1, preparing an appliance material;
s2, collecting oral cavity data of a patient;
s3, biomechanical analysis of tooth movement;
s4, designing an orthodontic treatment scheme;
s5, manufacturing a designed dentition physical model by using a 3D printing technology;
s6, manufacturing a membrane made of a shape memory material;
s7, manufacturing an invisible appliance;
s8, using an appliance.
As shown in FIG. 1, S1, preparation of appliance material
S11, dissolving: the method comprises the steps of weighing racemic polylactic acid PDLLA and apatite HA according to mass parts in advance, dissolving the pre-weighed racemic polylactic acid PDLLA in hydrogen chloride under stirring, and dissolving the apatite HA in ethanol for 10min by a high-speed homogenizer.
S12, preliminary mixing: slowly dripping the apatite HA and the ethanol solution into the stirred racemized polylactic acid PDLLA polymer solution by using a pipette, continuously stirring the emulsion for at least 4 hours in a sealing process, so that the racemized polylactic acid PDLLA and the apatite HA are further and uniformly mixed, and the ratio of the racemized polylactic acid PDLLA to the HA can be between 2 and 2.5.
S13, evaporating: after stirring in air, the solvent slowly formed some flocs, mainly racemic polylactic acid PDLLA and apatite HA composite, at the bottom of the beaker.
S14, drying: the composite material of step S13 is dried under vacuum.
S15, further mixing: and (2) uniformly mixing tributyl citrate TBC with the composite material in the step (S14) in a stirrer to prepare the shape memory material meeting the requirements.
S2, as shown in FIG. 2, collecting oral cavity data of a patient
And directly scanning by using an intraoral scanner to obtain dental crown data of a patient, and performing CT scanning on the patient to obtain jaw and dental root data of the patient.
S3, biomechanical analysis of tooth movement
And comparing the tooth model after tooth arrangement with the original dentition, performing biomechanical analysis on tooth movement, analyzing stress application requirements (translation and rotation) of each area of the dentition, and determining specific data of a local area with larger required force or moment and the required force and moment.
S4, orthodontic treatment scheme design
S41, carrying out scheme design on orthodontic treatment teeth, and carrying out motion constraint, collision constraint and tooth spacing constraint on the orthodontic treatment teeth, wherein the tooth arrangement result specifically comprises tooth extraction positions and numbers, tooth movement or rotation, anchorage design, accessory design and the like;
s42, determining restoring force provided by the appliance matrix according to the constitutive model of the shape memory high polymer;
s43, determining the treatment period of the single appliance base body according to the tooth movement amount and the restoring force of the appliance base body, so as to obtain the dentition model of each stage of orthodontic treatment.
S5, manufacturing a designed dentition physical model by using a 3D printing technology
The dentition model is input in STL data format to a three-dimensional stereoscopic printer such as Connex350 from Stratasys, U.S.A. for stereoscopic printing.
S6, manufacturing of membrane made of shape memory material
And (2) manufacturing the material manufactured in the step (S1) into a diaphragm, wherein the glass transition temperature of the material is about 35 ℃, and the completely dried composite material is pressed in a mould for 5 minutes at 105 ℃ by using a hot press, and the mould is designed into a standard circular diaphragm with the diameter of 50 mm and the thickness of 1 mm.
As shown in fig. 2, 3 and 4, S7, manufacture of invisible appliance
S71, processing the initial shape of the appliance by using a dentition model of a second stage on a hot-pressing film forming machine at a temperature of 100-120 ℃;
s72, performing secondary molding on the once-molded invisible appliance, reducing the temperature to about 50-70 ℃ on a hot-pressing film molding machine, performing hot-pressing film on the first-stage dental row on the first-stage appliance, and reducing the temperature to below the glass transition temperature under the condition of keeping external load to process the secondarily-molded invisible appliance.
S8, use of an appliance
S81, when a dentist uses the shape memory invisible appliance after the secondary molding, the shape memory invisible appliance is worn on the dentition of a patient;
s82, gradually recovering the teeth to a memory initial state under the oral temperature environment, and providing correction force required by tooth movement, so that the purpose of correction is achieved.
An appliance is a shape memory invisible appliance designed based on a bi-component material.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (8)
1. The manufacturing method of the shape memory invisible appliance based on the bi-component material comprises the following steps:
s1, preparing an appliance material;
s2, collecting oral cavity data of a patient;
s3, biomechanical analysis of tooth movement;
s4, designing an orthodontic treatment scheme;
s5, manufacturing a designed dentition model by using a 3D printing technology;
s6, manufacturing a membrane made of a shape memory material;
s7, processing the invisible appliance by using a dentition model on a hot-pressing film forming machine;
the preparation of the appliance material in the step S1 is as follows:
s11, dissolving: the method comprises the steps of weighing racemic polylactic acid PDLLA and apatite HA according to mass parts in advance, dissolving the pre-weighed racemic polylactic acid PDLLA in hydrogen chloride under stirring, and dissolving the apatite HA in ethanol for 10min by a high-speed homogenizer;
s12, preliminary mixing: slowly dripping the apatite HA and the ethanol solution into the stirred racemized polylactic acid PDLLA polymer solution by using a pipette, continuously stirring the emulsion for at least 4 hours in a sealing way, so that the racemized polylactic acid PDLLA and the apatite HA are uniformly mixed, and the ratio of the racemized polylactic acid PDLLA to the apatite HA is between 2 and 2.5;
s13, evaporating: stirring in air, slowly forming floccules at the bottom of a beaker after the solvent is slowly removed from the emulsion, wherein the floccules are a racemized polylactic acid PDLLA and apatite HA composite material;
s14, drying: drying the composite material in the step S13 under vacuum;
s15, further mixing: and (2) uniformly mixing tributyl citrate TBC with the composite material in the step (S14) in a stirrer to prepare the shape memory material.
2. The method for manufacturing the shape memory invisible appliance according to claim 1, wherein the step S2 specifically comprises the following steps: and directly scanning by using an intraoral scanner to obtain dental crown data of a patient, and performing CT scanning on the patient to obtain jaw and dental root data of the patient.
3. The method for manufacturing the shape memory invisible appliance according to claim 1, wherein the step S3 specifically comprises the following steps: and comparing the tooth model after tooth arrangement with the original dentition, performing biomechanical analysis on tooth movement, analyzing the stress application requirements of each area of the dentition, and determining the local area needing force or moment and the specific data of the needed force and moment.
4. The method for manufacturing the shape memory invisible appliance according to claim 1, wherein the step S4 specifically comprises the following steps:
s41, carrying out scheme design on orthodontic treatment teeth, and carrying out motion constraint, collision constraint and tooth spacing constraint on the orthodontic treatment teeth, wherein the tooth arrangement result specifically comprises tooth extraction positions and numbers, tooth movement or rotation, anchorage design and accessory design;
s42, determining restoring force provided by the appliance matrix according to the constitutive model of the shape memory high polymer;
s43, determining the treatment period of the single appliance base body according to the tooth movement amount and the restoring force of the appliance base body, so as to obtain the dentition model of each stage of orthodontic treatment.
5. The method for manufacturing the shape memory invisible appliance according to claim 1, wherein the step S5 specifically comprises the following steps: and inputting the dentition model into a three-dimensional printer by using an STL data format to carry out three-dimensional printing.
6. The method for manufacturing the shape memory invisible appliance according to claim 1, wherein the step S6 specifically comprises the following steps: the material produced in step S1 was made into a membrane, the glass transition temperature of which was 35 degrees celsius, and the completely dried composite material was compression molded in a mold at 105 degrees celsius for 5 minutes using a hot press, to produce a standard round membrane having a diameter of 50 millimeters and a thickness of 1 millimeter.
7. The method for manufacturing the shape memory invisible appliance according to claim 1, wherein the step S7 specifically comprises the steps of:
s71, processing the initial shape of the appliance by using a dentition model of a second stage on a hot-pressing film forming machine at a temperature of 100-120 ℃;
s72, performing secondary molding on the once-molded invisible appliance, reducing the temperature to 50-70 ℃ on a hot-pressing film molding machine, performing hot-pressing film on the first-stage dentition model on the first-stage appliance, and reducing the temperature to below the glass transition temperature under the condition of keeping external load to process the secondarily-molded invisible appliance.
8. An appliance, wherein the shape memory invisible appliance is manufactured by the shape memory invisible appliance manufacturing method based on the two-component material according to claims 1 to 7.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104161596A (en) * | 2014-08-04 | 2014-11-26 | 浙江工业大学 | Shape memory material-based oral appliance production method and invisible appliance thereby |
| CN204016523U (en) * | 2014-08-04 | 2014-12-17 | 浙江工业大学 | Invisible orthotic device |
| WO2021137161A1 (en) * | 2019-12-30 | 2021-07-08 | 3M Innovative Properties Company | Dental appliance with functional structures & transfer articles used in forming such appliances |
| CN113197851A (en) * | 2015-05-06 | 2021-08-03 | 辛纳吉勒公司 | Pharmaceutical suspensions containing drug particles, devices for their administration, and methods of use thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114269682A (en) * | 2019-08-20 | 2022-04-01 | 3M创新有限公司 | Medical articles having microstructured surfaces with enhanced ability to remove microorganisms when cleaned and methods thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104161596A (en) * | 2014-08-04 | 2014-11-26 | 浙江工业大学 | Shape memory material-based oral appliance production method and invisible appliance thereby |
| CN204016523U (en) * | 2014-08-04 | 2014-12-17 | 浙江工业大学 | Invisible orthotic device |
| CN113197851A (en) * | 2015-05-06 | 2021-08-03 | 辛纳吉勒公司 | Pharmaceutical suspensions containing drug particles, devices for their administration, and methods of use thereof |
| WO2021137161A1 (en) * | 2019-12-30 | 2021-07-08 | 3M Innovative Properties Company | Dental appliance with functional structures & transfer articles used in forming such appliances |
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