CN114681076A - Shape memory invisible appliance design method based on bi-component material and appliance - Google Patents
Shape memory invisible appliance design method based on bi-component material and appliance Download PDFInfo
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- CN114681076A CN114681076A CN202210208364.3A CN202210208364A CN114681076A CN 114681076 A CN114681076 A CN 114681076A CN 202210208364 A CN202210208364 A CN 202210208364A CN 114681076 A CN114681076 A CN 114681076A
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- 239000000463 material Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000013461 design Methods 0.000 title claims abstract description 22
- 210000004513 dentition Anatomy 0.000 claims abstract description 30
- 230000036346 tooth eruption Effects 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 210000000214 mouth Anatomy 0.000 claims abstract description 15
- 230000009477 glass transition Effects 0.000 claims abstract description 10
- 239000012528 membrane Substances 0.000 claims abstract description 10
- 238000005516 engineering process Methods 0.000 claims abstract description 9
- 238000010146 3D printing Methods 0.000 claims abstract description 8
- 239000012781 shape memory material Substances 0.000 claims abstract description 8
- 238000004458 analytical method Methods 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 9
- 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
- 229920000642 polymer Polymers 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 3
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- 230000008020 evaporation Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 244000144992 flock Species 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
- 210000001847 jaw Anatomy 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 210000003781 tooth socket Anatomy 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012937 correction Methods 0.000 description 6
- 229920000431 shape-memory polymer Polymers 0.000 description 3
- 206010061274 Malocclusion Diseases 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 230000006386 memory function Effects 0.000 description 2
- 210000004746 tooth root Anatomy 0.000 description 2
- 206010072574 Periodontal inflammation Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
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- 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
- 201000010099 disease Diseases 0.000 description 1
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- 230000005489 elastic deformation Effects 0.000 description 1
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- 239000004014 plasticizer Substances 0.000 description 1
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- 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
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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
- A61C7/002—Orthodontic computer assisted systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
- A61B6/512—Intraoral means
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Abstract
The invention discloses a shape memory invisible appliance design method and appliance based on a bi-component material, relates to the technical field of invisible tooth appliances, and particularly relates to a shape memory invisible appliance design method and appliance based on a bi-component material, which comprises the following steps: s1, preparing appliance materials; s2, collecting oral cavity data of a patient; s3, biomechanical analysis of tooth movement; s4, designing orthodontic treatment schemes; s5, manufacturing a designed dentition physical model by using a 3D printing technology; s6, manufacturing a shape memory material membrane; s7, manufacturing an invisible appliance; and S8, using the appliance. The double-component material disclosed by the invention has ideal shape recovery performance, glass transition temperature near the oral temperature of a human body and ideal shape recovery force at the oral temperature, and also 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 invisible tooth appliances, in particular to a shape memory invisible tooth appliance design method based on a bi-component material and an appliance.
Background
The orthodontic technology is characterized in that deformity or malocclusion is arranged for teeth, a fixed appliance or a bracket-free invisible appliance is utilized, correction force and correction torque are applied to the teeth, balance and coordination among facial bones, teeth and maxillofacial muscles are adjusted, and the aims of improving facial form, aligning dentition and improving chewing efficiency are fulfilled through treatment for a period of time. The appearance image of a treated object can be well improved through orthodontic treatment, so that the self-confidence of an individual in social communication is improved, and the active and optimistic life attitude is established.
The presence of brackets and archwires in conventional fixed orthodontic techniques can lead to strong discomfort for the patient during orthodontic treatment, and secondly, the oral cavity is difficult to keep clean due to inconvenient cleaning and periodontal inflammation is easily caused. 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 and hides the correction device, the installation difficulty is higher, the bracket and the arch wire are easy to fall off, and the applicability is not strong.
With the gradual maturity of 3D printing and computer aided design technologies, the bracket-free invisible correction technology comes up. Most of the traditional invisible orthodontic appliances use the elastic deformation to generate orthodontic force which is continuously applied to the teeth to be moved, thereby achieving the aim of orthodontic treatment. However, because the elastic material is easy to fatigue, the correcting force applied to the teeth by the correcting device is larger at the initial wearing stage, a patient has stronger uncomfortable feeling, then the correcting force is quickly attenuated, the tooth moving effect is quickly reduced, so that the invisible correcting device has a plurality of obstacles to the correction of the complex malocclusion deformity, and the adaptation diseases are limited.
Shape memory polymers, SMPs, such as PU, have proven promising in medical applications. The ware of correcting of shape memory polymer material can conveniently be worn in patient's oral cavity after getting soft under the certain temperature condition, the shape memory function that the ware of correcting has makes its original shape that resumes gradually in its memory under patient's oral cavity temperature environment and promotes the dentition and remove, this process is initiative, need not like current stealthy ware of correcting often changes, for the patient has saved not few troubles, the cost is also reduced, and owing to be initiative application of force, the ware is corrected more can the stability of assurance power than current elastic material stealthy, it is also more accurate. However, although SMP has good biocompatibility and good shape memory properties, its mechanical strength and elastic modulus are low, and it provides a small shape restoring force, and only has a good overall holding effect of dentition, and the restoring force provided cannot ensure a good moving effect of teeth. The ideal bracket-free shape memory appliance needs to have higher shape recovery rate, glass transition temperature near the human oral cavity temperature and ideal elastic modulus at the oral cavity temperature, so that the search for 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 design method of a shape memory invisible appliance made of a bi-component material and capable of providing larger shape restoring force and shape restoring rate and enabling teeth to continuously, stably and accurately move in an oral cavity and the appliance.
In order to achieve the purpose, the invention is realized by the following technical scheme: the shape memory invisible appliance design method based on the bi-component material and the appliance comprise the following steps:
s1, preparing appliance materials;
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 shape memory material membrane;
s7, manufacturing an invisible appliance;
and S8, using the appliance.
Optionally, the step S1 specifically includes the following steps:
s11, dissolving: weighing racemic polylactic acid PDLLA and apatite HA in advance according to the mass parts, 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 ethanol solution into the stirred polymer solution of the racemic polylactic acid PDLLA by using a pipette, and continuously stirring the emulsion for at least 4 hours in a sealing process to further uniformly mix the racemic polylactic acid PDLLA and the apatite HA, wherein the ratio of the racemic polylactic acid PDLLA to the apatite HA can be between 2 and 2.5.
S13, evaporation: after stirring in air and the solvent slowly released from the emulsion, some flocks were gradually formed at the bottom of the beaker, mainly the racemic polylactic acid PDLLA and apatite HA composite.
S14, drying: the composite material of step S13 is dried under vacuum conditions.
S15, further mixing: and (4) uniformly mixing the tributyl citrate TBC with the composite material in the step S14 in a stirrer to prepare the required shape memory material.
Optionally, the step S2 specifically includes the following steps: the dental crown data of a patient is directly obtained by scanning with an intraoral scanner, and the patient is subjected to CT scanning to obtain jaw bone and dental root data of the patient.
Optionally, the step S3 specifically includes the following steps: and comparing the tooth model with the original dentition after the teeth are arranged, carrying out biomechanical analysis on tooth movement, analyzing the stress application requirements of each area of the dentition, and determining a local area with larger required force or moment and 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 tooth arrangement, and carrying out motion constraint, collision constraint and tooth spacing constraint on the tooth arrangement, wherein the tooth arrangement result specifically comprises the position and number of tooth extraction, tooth movement or rotation, anchorage design, accessory design and the like;
s42, determining the restoring force provided by the appliance matrix according to the constitutive model of the shape memory high polymer;
and S43, determining the treatment period of the single pair of appliance matrixes according to the tooth movement amount and the restoring force of the appliance matrixes, thereby obtaining 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 for three-dimensional printing.
Optionally, the step S6 specifically includes the following steps: and (3) making the material prepared in the step (S1) into a membrane, wherein the glass transition temperature of the material is about 35 ℃, and pressing the completely dried composite material in a mould for 5 minutes at 105 ℃ by using a hot press, wherein the mould is designed into a standard circular membrane 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 the dentition model at the second stage on a hot-pressing film forming machine at the temperature of 100-120 ℃;
and S72, performing secondary forming on the primary-formed invisible appliance, reducing the temperature to about 50-70 ℃ on a hot-pressing film forming machine, performing hot-pressing film on the dentition of the primary-formed appliance at the first stage, reducing the temperature to be below the glass transition temperature under the condition of keeping external load, and processing the secondary-formed invisible appliance.
Optionally, the step S8 specifically includes the following steps:
s81, when the dentist uses the appliance, the shape memory invisible appliance after the secondary molding is worn on the dentition of the patient;
and S82, under the environment of oral cavity temperature, the tooth socket gradually recovers to the initial memory state, provides the orthodontic force required by tooth movement, and achieves the aim of orthodontic.
An appliance, which is a shape memory invisible appliance designed based on a bi-component material.
The invention provides a shape memory invisible appliance design method based on a bi-component material and an appliance, and the shape memory invisible appliance design method has the following beneficial effects:
the invention provides a shape memory bracket-free invisible appliance taking racemic polylactic acid PDLLA and apatite HA as raw materials based on the performance of a thermotropic shape memory polymer.
PDLLA has good mechanical properties, but the shape recovery rate is poor, and when an amorphous PDLLA polymer is compounded with crystalline calcium phosphate particles, a fixed phase and a reversible phase can be generated, so that the double-component material has a good shape memory function; the glass transition temperature of PDLLA is generally about 50-60 ℃, the toughness is poor, the proportion of plasticizer tributyl citrate TBC in the bi-component material is adjusted, so that the bi-component material has ideal shape recovery performance, glass transition temperature near the human oral cavity temperature and ideal shape recovery force at the oral cavity temperature, and 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, and the orthodontic effect is obviously improved.
Drawings
FIG. 1 is a schematic view of a process for preparing the material of the present invention;
FIG. 2 is a schematic view of the first and second stages of the dentition structure of the present invention;
FIG. 3 is a schematic perspective view of the invisible orthosis of the present invention;
fig. 4 is a schematic bottom view of the invisible orthosis of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
The invention provides a technical scheme that: the shape memory invisible appliance design method based on the bi-component material and the appliance comprise the following steps:
s1, preparing appliance materials;
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 shape memory material membrane;
s7, manufacturing an invisible appliance;
and S8, using the appliance.
Detailed description of the preferred embodiment 2
As shown in FIG. 1, S1 preparation of appliance material
S11, dissolving: weighing racemic polylactic acid PDLLA and apatite HA in advance according to the mass parts, 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 ethanol solution into the stirred racemic polylactic acid PDLLA polymer solution by using a pipette, and continuously stirring the emulsion for at least 4 hours in a sealing process to further uniformly mix the racemic polylactic acid PDLLA and the apatite HA, wherein the ratio of the racemic polylactic acid PDLLA to the HA can be 2-2.5.
S13, evaporation: after stirring in air and the solvent slowly released from the emulsion, some flocks were gradually formed at the bottom of the beaker, mainly the racemic polylactic acid PDLLA and apatite HA composite.
S14, drying: the composite material of step S13 is dried under vacuum conditions.
S15, further mixing: and (4) uniformly mixing the tributyl citrate TBC with the composite material in the step S14 in a stirrer to prepare the required shape memory material.
As shown in FIG. 2, S2, collecting the oral data of the patient
The dental crown data of the patient is directly obtained by scanning with an intraoral scanner, and the patient is subjected to CT scanning to obtain jaw bone and tooth root data of the patient.
S3 biomechanical analysis of tooth movement
And comparing the tooth model with the original dentition after the tooth arrangement is finished, carrying out biomechanical analysis on tooth movement, analyzing the stress application requirements (translation and rotation) of each area of the dentition, and determining a local area with larger required force or moment and specific data of the required force and moment.
S4 orthodontic treatment scheme design
S41, carrying out scheme design on orthodontic treatment tooth arrangement, and carrying out motion constraint, collision constraint and tooth spacing constraint on the tooth arrangement, wherein the tooth arrangement result specifically comprises the position and number of tooth extraction, tooth movement or rotation, anchorage design, accessory design and the like;
s42, determining the restoring force provided by the appliance matrix according to the constitutive model of the shape memory high polymer;
and S43, determining the treatment period of the single pair of appliance matrixes according to the tooth movement amount and the restoring force of the appliance matrixes, thereby obtaining the dentition model of each stage of orthodontic treatment.
S5, manufacturing the designed dentition physical model by using the 3D printing technology
The dentition model is input to a three-dimensional printer such as Connex350 from Stratasys, USA in STL data format for stereoscopic printing.
S6 manufacture of shape memory material film
And (4) manufacturing the material manufactured in the step (S1) into a membrane, wherein the glass transition temperature of the material is about 35 ℃, pressing the completely dried composite material in a mould for 5 minutes at 105 ℃ by using a hot press, and the mould is designed into a standard circular membrane with the diameter of 50 mm and the thickness of 1 mm.
As shown in FIG. 2, FIG. 3 and FIG. 4, S7, manufacture of invisible orthosis
S71, processing the initial shape of the appliance by the dentition model at the second stage on a hot-pressing film forming machine at the temperature of 100-120 ℃;
and S72, performing secondary forming on the primarily formed invisible appliance, reducing the temperature to about 50-70 ℃ on a hot-pressing film forming machine, performing hot-pressing film on the primarily formed appliance on dentition in the first stage, reducing the temperature to be below the glass transition temperature under the condition of keeping external load, and processing the secondarily formed invisible appliance.
S8 use of appliance
S81, when the dental appliance is used, the shape memory invisible appliance after the secondary molding is worn on the dentition of a patient;
and S82, under the environment of oral cavity temperature, the tooth socket gradually recovers to the initial memory state, provides the orthodontic force required by tooth movement, and achieves the aim of orthodontic.
An appliance, which is a shape memory invisible appliance designed based on a bi-component material.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (10)
1. The design method of the shape memory invisible appliance based on the bi-component material comprises the following steps:
s1, preparing appliance materials;
s2, collecting oral cavity data of a patient;
s3, analyzing the biomechanics of tooth movement;
s4, designing orthodontic treatment schemes;
s5, manufacturing a designed dentition physical model by using a 3D printing technology;
s6, manufacturing a shape memory material membrane;
s7, manufacturing an invisible appliance;
and S8, using the appliance.
2. The method for designing the shape memory invisible appliance based on the two-component material as claimed in claim 1, wherein the step S1 specifically comprises the following steps:
s11, dissolving: weighing racemic polylactic acid PDLLA and apatite HA in advance according to the mass parts, 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 ethanol solution into the stirred racemic polylactic acid PDLLA polymer solution by using a pipette, and continuously stirring the emulsion for at least 4 hours in a sealing process to further uniformly mix the racemic polylactic acid PDLLA and the apatite HA, wherein the ratio of the racemic polylactic acid PDLLA to the HA can be 2-2.5.
S13, evaporation: after stirring in air and the solvent slowly released from the emulsion, some flocks were gradually formed at the bottom of the beaker, mainly the racemic polylactic acid PDLLA and apatite HA composite.
S14, drying: the composite material of step S13 is dried under vacuum conditions.
S15, further mixing: and (4) uniformly mixing the tributyl citrate TBC with the composite material in the step S14 in a stirrer to prepare the required shape memory material.
3. The method for designing the shape memory invisible appliance based on the two-component material as claimed in claim 1, wherein the step S2 specifically comprises the following steps: the dental crown data of the patient is directly obtained by scanning with an intraoral scanner, and the patient is subjected to CT scanning to obtain jaw bone and tooth root data of the patient.
4. The method for designing the shape memory invisible appliance based on the two-component material as claimed in claim/1, wherein the step S3 specifically comprises the following steps: and comparing the tooth model with the original dentition after the teeth are arranged, carrying out biomechanical analysis on tooth movement, analyzing the stress application requirements of each area of the dentition, and determining a local area with larger required force or moment and specific data of the required force and moment.
5. The method for designing the shape memory invisible appliance based on the two-component material as claimed in claim 1, wherein the step S4 specifically comprises the following steps:
s41, carrying out scheme design on orthodontic treatment tooth arrangement, and carrying out motion constraint, collision constraint and tooth spacing constraint on the tooth arrangement, wherein the tooth arrangement result specifically comprises the position and number of tooth extraction, tooth movement or rotation, anchorage design, accessory design and the like;
s42, determining the restoring force provided by the appliance matrix according to the constitutive model of the shape memory high polymer;
and S43, determining the treatment period of the single pair of appliance matrixes according to the tooth movement amount and the restoring force of the appliance matrixes, thereby obtaining the dentition model of each stage of orthodontic treatment.
6. The method for designing the shape memory invisible appliance based on the two-component material as claimed in 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 for three-dimensional printing.
7. The method for designing the shape memory invisible appliance based on the two-component material as claimed in claim 1, wherein the step S6 specifically comprises the following steps: and (3) making the material prepared in the step (S1) into a membrane, wherein the glass transition temperature of the material is about 35 ℃, and pressing the completely dried composite material in a mould for 5 minutes at 105 ℃ by using a hot press, wherein the mould is designed into a standard circular membrane with the diameter of 50 mm and the thickness of 1 mm.
8. The method for designing the shape memory invisible appliance based on the two-component material as claimed in claim 1, wherein the step S7 specifically comprises the following steps:
s71, processing the initial shape of the appliance by the dentition model at the second stage on a hot-pressing film forming machine at the temperature of 100-120 ℃;
and S72, performing secondary forming on the primarily formed invisible appliance, reducing the temperature to about 50-70 ℃ on a hot-pressing film forming machine, performing hot-pressing film on the primarily formed appliance on dentition in the first stage, reducing the temperature to be below the glass transition temperature under the condition of keeping external load, and processing the secondarily formed invisible appliance.
9. The method for designing the shape memory invisible appliance based on the two-component material as claimed in claim 1, wherein the step S8 specifically comprises the following steps:
s81, when the dentist uses the appliance, the shape memory invisible appliance after the secondary molding is worn on the dentition of the patient;
and S82, under the environment of oral cavity temperature, the tooth socket gradually recovers to the initial memory state, provides the orthodontic force required by tooth movement, and achieves the aim of orthodontic.
10. An appliance, wherein the invisible shape memory appliance based on a two-component material design as claimed in claims 1-9.
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Citations (5)
| 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 |
| US20210177549A1 (en) * | 2019-08-20 | 2021-06-17 | 3M Innovative Properties Company | Medical articles with microstructured surface having increased microorganism removal when cleaned and methods 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 |
| 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 |
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Patent Citations (6)
| 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 |
| US20210177549A1 (en) * | 2019-08-20 | 2021-06-17 | 3M Innovative Properties Company | Medical articles with microstructured surface having increased microorganism removal when cleaned and methods 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 |
| US20230049504A1 (en) * | 2019-12-30 | 2023-02-16 | 3M Innovative Properties Company | Dental appliance with functional structures & transfer articles used in forming such appliances |
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