CN111012528A - 3D design and manufacturing method of bracket-free invisible appliance - Google Patents
3D design and manufacturing method of bracket-free invisible appliance Download PDFInfo
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- CN111012528A CN111012528A CN201911154954.7A CN201911154954A CN111012528A CN 111012528 A CN111012528 A CN 111012528A CN 201911154954 A CN201911154954 A CN 201911154954A CN 111012528 A CN111012528 A CN 111012528A
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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
- 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
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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
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Abstract
A3D design and manufacturing method of a bracket-free invisible appliance belongs to the technical field of oral treatment and comprises the following manufacturing steps: the method comprises the steps of three-dimensional digital model acquisition, 3D design of a transparent appliance, design of a conventional labial attachment, design of a lingual attachment, printing and manufacturing of a female die of the transparent appliance, manufacturing of an attachment bonding template, manufacturing of the transparent appliance, and bonding of the attachment to manufacture the bracket-free invisible appliance. Through the tongue lateral surface at the tooth increase attachment, form the undercut of tooth lingual surface or increase the undercut of tooth lingual surface, increase the retention power of correcting the ware, prevent that the tooth from derailing, guarantee that the tooth moves according to direction and the volume of computer theoretical design, improve the retention power of the stealthy just abnormal ware of no support groove. The use of lingual attachments may provide enhanced retention when the addition of the attachment to the side of the tooth still does not provide sufficient retention of the appliance.
Description
Technical Field
The invention belongs to the technical field of oral treatment, and particularly relates to a 3D design and a manufacturing method of a bracket-free invisible appliance.
Background
In orthodontic clinical treatment, teeth are derailed because the retention force of the appliance on some teeth is small, the appliance cannot be completely in place and cannot move all teeth needing to be moved according to a designed path, so that clinically, after the originally designed series appliance is used, even when a plurality of patients need to use only one part of the originally designed appliance, the patients are remade or the dentition of the patients is scanned, the appliance is designed again, and most of the patients in clinic often experience the situation that a new series appliance is remade for a plurality of times. Repeated remanufacture and wearing of new appliances not only wastes materials, but also wastes a great deal of time for doctors, engineers and patients, and increases the treatment course of the patients.
Disclosure of Invention
According to the invention, the additional device is added on the lingual side of the teeth to form the inverted concave of the lingual surface of the teeth or increase the inverted concave of the lingual surface of the teeth, so that the retention force of the orthodontic appliance is increased, the teeth are prevented from derailing, the teeth are ensured to move according to the direction and the amount designed by the computer theory, and the retention force of the bracket-free invisible orthodontic appliance is improved.
The invention adopts the following technical scheme:
A3D design and manufacturing method of a bracket-free invisible appliance comprises the following manufacturing steps:
1) collecting a three-dimensional digital model: acquiring the upper dentition and the lower dentition and the resultant relation, recording the resultant relation by wax sheets, and scanning the upper dentition and the lower dentition and the resultant relation of a patient by a bin scanner to form a digital model;
2) 3D design of transparent appliance: introducing a three-dimensional digital model into design software of the transparent appliance, digitally arranging teeth in the software, arranging a final ideal fit relation, and decomposing the initial tooth state to the final fit relation into a plurality of steps;
3) design of conventional labial attachment: designing a lip side attachment at a corresponding step of the appliance needing to add the attachment by a lip side attachment design control in design software of the transparent appliance;
4) designing a lingual accessory: the lingual attachment design control in the design software of the transparent appliance is used for designing the lingual attachment of the tooth which is still not enough to generate enough retention force after the labial attachment is added;
5) printing a female die for manufacturing the transparent appliance: printing correction target models with labial and lingual attachments in each step through 3D printing to serve as female molds for manufacturing the thermoplastic film transparent correction appliances, or directly designing digital models of the transparent correction appliances through digital models of teeth in each stage and directly printing thermoplastic material transparent correction appliances;
6) manufacturing an accessory bonding template: printing a master die by using a digital model with an accessory at the original position of the tooth, and manufacturing an accessory bonding template of the hot-pressing transparent membrane;
7) manufacturing a transparent appliance: manufacturing a series of transparent orthodontic appliances by using a thermoplastic membrane and a vacuum adsorption molding press for hot pressing with a 3D printed orthodontic appliance series female die;
8) adhering accessories: acid etching the tooth surface with the accessory design by using an acid etching agent, filling photocureable resin into the accessory vacuole of the accessory bonding template, placing the template in the dentition to completely fit the dentition in place, and irradiating by using an ultraviolet lamp to solidify the resin to obtain the bracket-free invisible appliance.
Further, the step 1) of obtaining the upper and lower dentitions and the resultant relationship is to scan the upper and lower dentitions and the resultant relationship of the patient through an oral scanner, or to prepare an impression of the dentitions and cast a plaster model.
Further, the initial tooth state to the final resultant relation in the step 2) is decomposed into a plurality of steps, and a pair of transparent appliances is manufactured at the later stage of each step.
Further, the template in the step 6) is provided with corresponding cavities of the digital attachments for adhering the retention attachments on the labial side and the lingual side of the tooth surface.
Furthermore, the accessory is an accessory device which has a certain thickness and is square, rectangular, circular, oval, semicircular or triangular.
The invention has the advantages and effects that:
through the tongue lateral surface at the tooth increase attachment, form the undercut of tooth lingual surface or increase the undercut of tooth lingual surface, increase the retention power of correcting the ware, prevent that the tooth from derailing, guarantee that the tooth moves according to direction and the volume of computer theoretical design, improve the retention power of the stealthy just abnormal ware of no support groove. The use of lingual attachments may provide enhanced retention when the addition of the attachment to the side of the tooth still does not provide sufficient retention of the appliance.
Drawings
FIG. 1 is a schematic diagram of the distribution of an attachment for a bracket-less invisible appliance in accordance with one aspect of the present invention;
FIG. 2 is a schematic view of the distribution of the attachment of the invisible bracket appliance in another aspect of the invention;
FIG. 3 is a schematic view of the arrangement of an additional device of the bracket-free invisible appliance in another aspect of the invention.
Detailed Description
The invention is further explained below with reference to the figures and the examples.
A3D design and manufacturing method of a bracket-free invisible appliance comprises manufacturing design software of a transparent appliance with a tongue side accessory control, scanning dentitions of a patient by a scanner to form a digital model, introducing the digital model into the design software of the transparent appliance, designing a tongue side accessory on the tongue side of the digital model of the patient by using the tongue side control, wherein the accessory is a square, rectangular, circular, oval, semicircular and triangular additional device with a certain thickness, manufacturing a bonding template of the accessory through the designed digital model, and bonding dental resin on the tongue side of the corrected tooth by using the bonding template to form a corresponding accessory. And (3) carrying out corresponding tooth movement design on the transparent appliance by using the digital model with the lingual attachments to manufacture the transparent appliance, and manufacturing each step of appliance according to the shapes of the teeth and the corresponding attachments when the bracket-free appliance is manufactured.
Example 1
The invention relates to a 3D design and manufacturing method of a bracket-free invisible appliance, which comprises the following manufacturing steps:
1) collecting a three-dimensional digital model: the upper dentition and the lower dentition of a patient and the relation of the dentition and the combination are scanned by an oral scanner, or an dentition impression is prepared and a plaster model is poured, the relation of the dentition impression and the combination is recorded by a wax sheet, and the upper dentition and the lower dentition and the relation of the dentition impression and the combination of the dentition impression are scanned by a bin type scanner to form a digital model.
2) 3D design of transparent appliance: the method comprises the steps of introducing a three-dimensional digital model into design software of the transparent appliance, carrying out digital tooth arrangement in the software, arranging a final ideal fit relation, decomposing the initial tooth state to the final fit relation into a plurality of steps, and manufacturing a pair of transparent appliances in the future in each step. The design software used can be Clincheck, iOrtho, ACEdental, etc.
3) Design of conventional labial attachment: and designing the labial attachment at the corresponding step of the appliance needing to add the attachment by using the labial attachment design control in the design software of the transparent appliance.
4) Designing a lingual accessory: with lingual attachment design controls in the design software of the transparent appliance, the lingual attachment is designed for teeth that are still insufficient to produce sufficient retention force after the labial attachment is added.
5) Printing a female die for manufacturing the transparent appliance: and printing the correction target model with the labial and lingual attachments in each step through 3D printing to serve as a female die for manufacturing the thermoplastic film transparent corrector. The digital model of the transparent appliance can also be directly designed through the digital model of the teeth at each stage, and the thermoplastic transparent appliance can be directly printed.
6) Manufacturing an accessory bonding template: and printing the master die by using the digital model with the accessories at the original positions of the teeth to manufacture the accessory bonding template of the hot-pressing transparent membrane. The template has corresponding cavities for the digital attachments for bonding the retention attachments labially and lingual sides of the tooth surfaces.
7) Manufacturing a transparent appliance: and (3) hot-pressing the 3D printed female mould of the appliance series by using a thermoplastic membrane and a vacuum adsorption molding press to manufacture a series of transparent appliances.
8) Adhering accessories: etching the tooth surface with the accessory design by using an acid etching agent, filling photocureable resin into the accessory vacuole of the accessory bonding template, placing the template on the dentition to completely fit the dentition in place, and irradiating by using an ultraviolet lamp to solidify the resin.
9) Wearing the appliance: the patient wears the series transparent appliance, and changes one pair in 1-2 weeks, and the fixing accessories are added on the tongue side, so that the correction efficiency is obviously improved, and the correction effect is more accurate.
Principle of operation
When the stealthy orthodontic appliance of no support groove arranges the tooth design, need increase the digital additional device of the tooth tongue lateral surface design of undercut on computer digital model and increase different shapes, then correct each step design of removal tooth, the corresponding position of additional device had both had the sunken of corresponding shape when making the stealthy orthodontic appliance of each step of no support groove, use original digital model preparation additional device bonding template, when the patient wore the first pair and rescues the ware, utilize the additional device bonding template bonding additional device in tooth tongue surface bonding, the improvement that will produce the solid power when rescuring the ware and wearing.
Claims (5)
1. A3D design and manufacturing method of a bracket-free invisible appliance is characterized by comprising the following steps: the method comprises the following manufacturing steps:
1) collecting a three-dimensional digital model: acquiring the upper dentition and the lower dentition and the resultant relation, recording the resultant relation by wax sheets, and scanning the upper dentition and the lower dentition and the resultant relation of a patient by a bin scanner to form a digital model;
2) 3D design of transparent appliance: introducing a three-dimensional digital model into design software of the transparent appliance, digitally arranging teeth in the software, arranging a final ideal fit relation, and decomposing the initial tooth state to the final fit relation into a plurality of steps;
3) design of conventional labial attachment: designing a lip side attachment at a corresponding step of the appliance needing to add the attachment by a lip side attachment design control in design software of the transparent appliance;
4) designing a lingual accessory: the lingual attachment design control in the design software of the transparent appliance is used for designing the lingual attachment of the tooth which is still not enough to generate enough retention force after the labial attachment is added;
5) printing a female die for manufacturing the transparent appliance: printing correction target models with labial and lingual attachments in each step through 3D printing to serve as female molds for manufacturing the thermoplastic film transparent correction appliances, or directly designing digital models of the transparent correction appliances through digital models of teeth in each stage and directly printing thermoplastic material transparent correction appliances;
6) manufacturing an accessory bonding template: printing a master die by using a digital model with an accessory at the original position of the tooth, and manufacturing an accessory bonding template of the hot-pressing transparent membrane;
7) manufacturing a transparent appliance: manufacturing a series of transparent orthodontic appliances by using a thermoplastic membrane and a vacuum adsorption molding press for hot pressing with a 3D printed orthodontic appliance series female die;
8) adhering accessories: acid etching the tooth surface with the accessory design by using an acid etching agent, filling photocureable resin into the accessory vacuole of the accessory bonding template, placing the template in the dentition to completely fit the dentition in place, and irradiating by using an ultraviolet lamp to solidify the resin to obtain the bracket-free invisible appliance.
2. The 3D design and manufacturing method of the bracket-free invisible appliance of claim 1, wherein the method comprises the following steps: in the step 1), the upper dentition and the lower dentition and the resultant relation are obtained by scanning the upper dentition and the lower dentition and the resultant relation of a patient through an oral scanner, or preparing a dentition impression and pouring a plaster model.
3. The 3D design and manufacturing method of the bracket-free invisible appliance of claim 1, wherein the method comprises the following steps: and 2) decomposing the initial tooth state to the final resultant relation into a plurality of steps, and manufacturing a pair of transparent orthodontic appliances at the later stage of each step.
4. The 3D design and manufacturing method of the bracket-free invisible appliance of claim 1, wherein the method comprises the following steps: in step 6), the template is provided with cavities corresponding to the digital attachments for adhering the retention attachments on the labial side and the lingual side of the tooth surface.
5. The 3D design and manufacturing method of the bracket-free invisible appliance of claim 1, wherein the method comprises the following steps: the accessories are square, rectangular, circular, oval, semicircular and triangular accessories with certain thicknesses.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911154954.7A CN111012528A (en) | 2019-11-22 | 2019-11-22 | 3D design and manufacturing method of bracket-free invisible appliance |
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| CN201911154954.7A CN111012528A (en) | 2019-11-22 | 2019-11-22 | 3D design and manufacturing method of bracket-free invisible appliance |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112092375A (en) * | 2020-08-28 | 2020-12-18 | 湖南芽正美科技有限公司 | Processing technology of accessory for treating malocclusion of teeth |
| CN112741699A (en) * | 2020-12-29 | 2021-05-04 | 南京医科大学附属口腔医院 | Invisible orthotic device and method for monitoring wearing time and effect of invisible orthotic device |
| CN112890994A (en) * | 2021-01-15 | 2021-06-04 | 辛萍 | Invisible correction double-peak accessory |
| CN113367814A (en) * | 2021-06-24 | 2021-09-10 | 中国人民解放军空军军医大学 | Method for manufacturing direct-bonding type transparent appliance accessory through digital 3D printing |
| CN113425428A (en) * | 2021-06-24 | 2021-09-24 | 无锡时代天使医疗器械科技有限公司 | Method and system for constructing retention accessory and bracket-free invisible orthodontic appliance |
| CN113855280A (en) * | 2021-09-30 | 2021-12-31 | 浙江工业大学 | Bi-material invisible appliance with metal arch wire and design method thereof |
| WO2022161078A1 (en) * | 2021-01-26 | 2022-08-04 | 无锡时代天使医疗器械科技有限公司 | Method for manufacturing shell-shaped dental instrument |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2056733A1 (en) * | 2006-08-21 | 2009-05-13 | Thomas Kalili | Orthodontic repositioning appliance |
| CN201370636Y (en) * | 2009-01-16 | 2009-12-30 | 西安市恒惠科技有限公司 | Novel macromolecule orthodontic braces |
| US20110020761A1 (en) * | 2006-08-21 | 2011-01-27 | Thomas Kalili | Orthodontic Repositioning Applicance |
| CN105496573A (en) * | 2014-09-23 | 2016-04-20 | 上海时代天使医疗器械有限公司 | Method for providing orthodontic attachment, and orthodontic attachment |
| 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 |
| CN205683156U (en) * | 2015-12-29 | 2016-11-16 | 深圳爱美适科技有限公司 | There is the invisible orthotic device without bracket of tongue thorn |
| CN106725920A (en) * | 2016-12-07 | 2017-05-31 | 上海牙典医疗器械有限公司 | A kind of designing and manufacturing method of orthodontic appliance |
| CN208426231U (en) * | 2017-07-17 | 2019-01-25 | 深圳市国友义齿有限公司 | A kind of orthodontic hidden fixing device |
| CN110014537A (en) * | 2019-04-16 | 2019-07-16 | 珠海拜瑞口腔医疗股份有限公司 | A kind of method and appliance master mold of 3D printing invisible orthotic device master mold |
-
2019
- 2019-11-22 CN CN201911154954.7A patent/CN111012528A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2056733A1 (en) * | 2006-08-21 | 2009-05-13 | Thomas Kalili | Orthodontic repositioning appliance |
| US20110020761A1 (en) * | 2006-08-21 | 2011-01-27 | Thomas Kalili | Orthodontic Repositioning Applicance |
| CN201370636Y (en) * | 2009-01-16 | 2009-12-30 | 西安市恒惠科技有限公司 | Novel macromolecule orthodontic braces |
| CN105496573A (en) * | 2014-09-23 | 2016-04-20 | 上海时代天使医疗器械有限公司 | Method for providing orthodontic attachment, and orthodontic attachment |
| CN205683156U (en) * | 2015-12-29 | 2016-11-16 | 深圳爱美适科技有限公司 | There is the invisible orthotic device without bracket of tongue thorn |
| 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 |
| CN106725920A (en) * | 2016-12-07 | 2017-05-31 | 上海牙典医疗器械有限公司 | A kind of designing and manufacturing method of orthodontic appliance |
| CN208426231U (en) * | 2017-07-17 | 2019-01-25 | 深圳市国友义齿有限公司 | A kind of orthodontic hidden fixing device |
| CN110014537A (en) * | 2019-04-16 | 2019-07-16 | 珠海拜瑞口腔医疗股份有限公司 | A kind of method and appliance master mold of 3D printing invisible orthotic device master mold |
Non-Patent Citations (2)
| Title |
|---|
| 谢乙加等: "无托槽隐形矫治系统的相关生物力学研究及病例", 《国际口腔医学杂志》 * |
| 顾泽旭等: "隐形矫治技术中附件的应用", 《CHINESE JOURNAL OF PRACTICAL STOMATOLOGY》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112092375A (en) * | 2020-08-28 | 2020-12-18 | 湖南芽正美科技有限公司 | Processing technology of accessory for treating malocclusion of teeth |
| CN112741699A (en) * | 2020-12-29 | 2021-05-04 | 南京医科大学附属口腔医院 | Invisible orthotic device and method for monitoring wearing time and effect of invisible orthotic device |
| CN112890994A (en) * | 2021-01-15 | 2021-06-04 | 辛萍 | Invisible correction double-peak accessory |
| WO2022161078A1 (en) * | 2021-01-26 | 2022-08-04 | 无锡时代天使医疗器械科技有限公司 | Method for manufacturing shell-shaped dental instrument |
| CN113367814A (en) * | 2021-06-24 | 2021-09-10 | 中国人民解放军空军军医大学 | Method for manufacturing direct-bonding type transparent appliance accessory through digital 3D printing |
| CN113425428A (en) * | 2021-06-24 | 2021-09-24 | 无锡时代天使医疗器械科技有限公司 | Method and system for constructing retention accessory and bracket-free invisible orthodontic appliance |
| CN113425428B (en) * | 2021-06-24 | 2022-09-06 | 无锡时代天使医疗器械科技有限公司 | Method and system for constructing retention accessory and bracket-free invisible orthodontic appliance |
| CN113855280A (en) * | 2021-09-30 | 2021-12-31 | 浙江工业大学 | Bi-material invisible appliance with metal arch wire and design method thereof |
| CN113855280B (en) * | 2021-09-30 | 2023-11-17 | 浙江工业大学 | Double-material invisible appliance with metal arch wire and design method thereof |
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Application publication date: 20200417 |