WO2020138767A1 - 리테이너 제작 방법 - Google Patents
리테이너 제작 방법 Download PDFInfo
- Publication number
- WO2020138767A1 WO2020138767A1 PCT/KR2019/017409 KR2019017409W WO2020138767A1 WO 2020138767 A1 WO2020138767 A1 WO 2020138767A1 KR 2019017409 W KR2019017409 W KR 2019017409W WO 2020138767 A1 WO2020138767 A1 WO 2020138767A1
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- WO
- WIPO (PCT)
- Prior art keywords
- retainer
- base material
- laser processing
- manufacturing
- data
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/007—Dental splints; teeth or jaw immobilisation devices; stabilizing retainers bonded to teeth after orthodontic treatments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/004—Means or methods for taking digitized impressions
- A61C9/0046—Data acquisition means or methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/45—Nc applications
- G05B2219/45041—Laser cutting
Definitions
- the present invention relates to a method for manufacturing a retainer, and more specifically, based on data obtained by 3D scanning of the tooth arrangement, laser cutting the shape memory alloy based on 2D data reflecting all of the inclination of each tooth, the shape of the teeth, and the shape of the interdental teeth. It relates to a method of manufacturing a retainer for production.
- a retainer is a kind of dental arrangement maintenance device used for removing an orthodontic device after maintenance of an orthodontic treatment and maintaining a dental arrangement.
- retainers can be largely divided into adhesive retainers that attach to teeth and removable retainers that can be arbitrarily detached like mouthpieces.
- the triplex wire produced in this way has the advantage of being easy to manufacture because it can be deformed, and it has the advantage of allowing a slight physiological movement when each tooth receives a force because it has some elasticity. It has a problem that the tongue is uncomfortable because it intersects the interdental concave area on the inner surface of the tooth because it is not closely adhered, and food is pinched or a plaque is formed in the concave area, causing inflammation and cavities.
- the dentition may be distorted, and the dentition is deformed as the broken or bent area is opened or the twisted three strands are released.
- the present invention has been derived to solve the above-mentioned problems, and is manufactured by laser cutting a shape memory alloy based on two-dimensional data reflecting all the inclinations of each tooth, the shape of the tooth flexion, and the interdental shape, based on the three-dimensional scanning of the tooth arrangement. To provide a method for manufacturing a retainer.
- the method of manufacturing a retainer according to an embodiment of the present invention includes obtaining 3D scanning data of a tooth array using a 3D scanning device, and converting the obtained 3D scanning data into laser processing data for laser processing. And manufacturing a retainer by laser processing a base material based on the laser processing data.
- the three-dimensional scanning data of the tooth array may be characterized in that the file corresponding to the stl file format.
- the step of converting the obtained three-dimensional scanning data into laser processing data for laser processing comprises: setting a virtual retainer position in the three-dimensional scanning data corresponding to the stl file format, the third Setting a reference plane position (Datum plane section) on the dimensional scanning data, forming a retainer shape along the outer line of the tooth arrangement on the reference plane, and generating a 2D laser processing data according to the formed retainer shape It can be characterized by doing.
- the step of manufacturing a retainer by laser processing a base material includes preparing a jig to fix the base material, and seating and fixing the base material on the jig Step, setting a set value of the laser cutting means, processing the base material according to the set value, producing a retainer corresponding to the laser processing data, and separating the retainer from the base material It can be characterized by doing.
- the base material may be characterized in that the material Nitinol (Nitinol).
- the retainer is formed with a curved protrusion protruding toward the interdental, and the data for laser processing may be generated such that the protruding end of the curved protrusion is rounded.
- the retainer is formed with a curved projection protruding toward the interdental, and after the step of laser processing the base material to produce a retainer, processing the protruding end of the curved projection to be rounded; It can be characterized by.
- the front side facing the tooth surface of the retainer and the rear side of the retainer opposite to the front side are formed to be inclined, and in the step of manufacturing a retainer by laser processing the base material, the base material is provided on the front side and the back side of the retainer. It can be characterized in that the corresponding front and rear surfaces are laser cut so as to be perpendicular to the upper surface, and after the laser cutting is performed, the cut front and back surfaces of the base material are inclined by separate processing.
- the step of manufacturing the retainer by laser processing the base material separately processing the sharp edge portion of the laser-processed base material to form a rounded corner portion of the repeater; Can.
- the shape memory alloy is laser cut, but the inclination of each tooth, the shape of the tooth flexion, and the shape of the interdental are all reflected on the basis of the three-dimensional scanning data of the tooth array. It has the advantage of being in close contact.
- the teeth are not deformed during the period required for the manufacture and attachment of the retainer, thereby providing perfect adhesion to the teeth. It has an advantage.
- the tooth surface bend, tooth surface inclination, etc. can be accurately identified through the 3D scanning method, the attachment area between the tooth surface and the retainer is maximized when attaching via adhesive, thereby maintaining the strong adhesion.
- FIG. 1 is a view showing a conventional conventional triplex wire retainer and various problems caused by the retainer.
- FIG. 2 is a view showing a method of manufacturing a retainer according to an embodiment of the present invention in a sequence.
- FIG. 3 is a view showing in more detail the step of converting the data for laser processing shown in FIG. 2.
- FIG. 4 is a view showing in more detail the step of manufacturing a retainer by laser processing the base material shown in FIG.
- FIG. 5 is a view more specifically showing the jig shown in FIG.
- FIG. 6 is a view showing a curved projection of the retainer according to an embodiment of the present invention.
- FIG. 1 is a view showing a conventional conventional triplex wire retainer and various problems caused by the retainer.
- a conventional general triplex wire retainer is twisted by bending a ready-made wire made of a bundle (b) by twisting three strands of triplex wire (a), and then hitting it through a dental bond It is used to attach to the method.
- the retainer to which the triplex wire is applied has various problems as follows.
- FIG. 2 is a view showing a method of manufacturing a retainer according to an embodiment of the present invention in a sequence
- FIG. 3 is a view showing in more detail the step of converting the data for laser processing shown in FIG. 2
- FIG. 4 2 is a view showing in more detail the step of manufacturing a retainer by laser processing the base material shown in FIG. 2.
- the retainer according to the embodiment of the present invention is closely adhered to and attached to the teeth by a separate adhesive by closely contacting each tooth along the arrangement of teeth, and the retainer has a shape memory alloy plate based on 3D scanning data of the tooth arrangement. It can be produced by laser cutting.
- the retainer is a plate-shaped shape memory alloy plate cut by a laser cutting method to be integrally manufactured, it has a shape that perfectly matches the arrangement of teeth.
- the retainer is a shape memory alloy material, even if the tooth is distorted or deformed, the force may be limited by the nature of maintaining the laser cut form at all times.
- 3D scanning data of a tooth array is acquired using a 3D scanning device (S201).
- the 3D scanning data refers to photographing data obtained by using a 3D camera for teeth of the maxillary and mandibular teeth.
- the 3D scanning data includes tooth arrangement, tooth surface bending, tooth shape, interdental shape, tooth surface inclination, etc. All this is included.
- the teeth arrangement, tooth surface curvature, tooth shape, interdental shape, tooth surface inclination, etc. are all reflected through the laser cutting machine, and these 3D scanning data are stl files. It may be a file corresponding to the format.
- the obtained 3D scanning data is converted into laser processing data for laser processing (S202). This will be described in more detail through FIG. 3.
- a virtual retainer position is set on the 3D scanning data corresponding to the stl file format, and a datum plane section on which the virtual retainer is located on the 3D scanning data is set.
- a retainer shape is formed along an outer line that the tooth arrangement and the reference surface abut.
- the formed retainer shape is formed with one or more curved protrusions 111 (FIG. 6) for tight contact with each pronunciation.
- the bent protrusion 111 refers to an area in which a portion protrudes in an inner direction so as to be in close contact with a recessed portion formed in a gap between teeth adjacent to each other.
- the curved protrusion 111 is formed at the time of laser cutting based on the 3D scanning data, it is precisely matched to the recessed portion of the interdental without error.
- the retainer may be formed by reflecting the inclination of each tooth surface in order to maximize the attachment area with the tooth surface of each tooth.
- the cross-section of the retainer may take the form of a parallelogram formed to correspond to the inclination formed on the tooth surface, rather than a vertical rectangular shape.
- a retainer is manufactured by laser processing (cutting) a base material based on data for laser processing (S203). This will be described in more detail with reference to FIG. 4.
- the base material may be a shape memory alloy plate, and may be a thin metal plate of Nitinol material.
- the base material is fixed to the jig so that it does not move using a separate fixing device.
- the set value (algorithm condition value) of the laser cutting machine is set (granted), for example, processing speed 200mm/s, processing acceleration 3000mm/s, pulse type pulse power 300w, pulse frequency 600hz, pulse time 400us , Argon gas pressure 3.0mpa, etc. will set the laser cutting machine.
- the base material is laser cut according to the set value, thereby forming a retainer corresponding to the data for the two-dimensional laser processing.
- the retainer is separated from the base material, where the retainer can be separated from the base material and accommodated in the jig.
- the jig absorbs fine vibrations (shocks) of the base material generated during laser cutting of the base material (thin nitinol), and extinguishes or minimizes the reflected beam through the base material. Let's take a look.
- FIG. 5 is a view more specifically showing the jig shown in FIG.
- the jig is largely divided into an upper body (Top body) and a lower body (Bottom body).
- the center of the lower body has a constant depth (distance) so that the laser beam passing through the base material is extinguished or the influence of the reflected beam is minimized during laser cutting.
- a seating portion for seating and fixing the lower edge of the thin-walled nitinol base material is formed at the center, and a plurality of circular magnets (for example, at least 8 or more circular magnets) are disposed at regular distances along the upper edge surface. .
- the upper body is positioned on the lower body.
- the upper body is formed in a shape and size corresponding to the upper surface of the lower body.
- the nitinol base material is firmly fixed between the upper body and the lower body.
- the nitinol base material may be fixed firmly without moving during laser cutting.
- a plurality of positioning projections are protruded on the upper side of the lower body, and a plurality of positioning grooves are formed on the upper body at a corresponding position.
- the upper body when the upper body is superimposed on the lower body, the upper body may not be moved in the lower body and can be firmly fixed as the groove for positioning is fitted to the projection for positioning.
- the 3D scanning data may not include a tooth surface inclination, and in this case, additional processing may be further performed after laser processing the base material.
- the retainer does not reflect the inclination of each tooth surface during laser cutting, and after the laser cutting, the inclination may be formed through additional processing.
- the retainer is formed by cutting the plate-shaped shape memory alloy plate by a laser cutting method, and thus the upper and lower surfaces of the shape memory alloy plate may be reflected and formed identically. That is, the upper and lower surfaces of the retainer may be formed to be parallel.
- the front surface facing the tooth surface of the retainer may be formed to be inclined through additional processing after laser cutting perpendicular to the upper surface. That is, in step S203, the front surface of the retainer may be razor-cut perpendicular to the top surface. And, it can be processed inclined corresponding to the tooth surface through additional processing.
- the rear surface opposite to the front surface of the retainer may be formed to be inclined to be parallel to the front surface.
- the rear surface of the retainer may be formed to be inclined through additional processing after laser cutting perpendicular to the upper surface. That is, in step S203, the rear surface of the retainer may be razor-cut perpendicular to the upper surface. And, it can be processed inclined corresponding to the tooth surface through additional processing.
- Additional processing for obliquely forming the front and rear surfaces of the retainer may include milling, polishing, and the like.
- the thickness of the retainer which has been manufactured, may be approximately 0.4 mm.
- the height of the retainer may be approximately 0.4 mm.
- the retainer When the front and rear surfaces of the retainer are formed to be inclined through additional processing, the retainer may be laser cut to have a thickness of approximately 0.5 mm. In addition, as the front and rear surfaces are processed obliquely through additional processing, it may be formed to a thickness of approximately 0.4 mm.
- all corner portions of the retainer may be formed to be round.
- further processing may be further performed after laser processing the base material.
- a corner formed in a portion in which the upper surface and the front surface of the retainer are in contact, a portion in which the upper surface and the rear surface are in contact, a portion in which the lower surface and the front surface are in contact, and a portion where the lower surface and the rear surface are in contact may be rounded.
- corner portions formed at both ends of the retainer may be rounded.
- portions corresponding to the corners of the retainer may be rounded through a separate additional processing.
- additional processing may include milling, polishing, and the like.
- the front surface of the retainer facing the tooth surface and the rear surface of the retainer opposite to the front surface may be formed in a shape corresponding to each other.
- the curved protrusion 111 protrudes toward the interdental from the front of the retainer.
- the bent protrusion 111 is recessed toward the interdental surface from the rear surface of the retainer.
- the retainer may be formed in a shape that smoothly continues as a whole, so that there are no sharp edges and valleys when viewed from above.
- the protruding end of the bent projection 111 may be formed to be round.
- FIG. 6 is a view showing a curved projection of the retainer according to an embodiment of the present invention.
- the curved protrusion 111 may be formed such that an end protruding from the front of the retainer is rounded. Through this, it is possible to prevent the occurrence of damage due to the sharp end of the bent protrusion 111.
- the curved protrusion 111 may be formed to have a rounded end at the rear surface of the retainer. Therefore, a thickness for securing the strength of the protruding end of the bent protrusion 111 can be secured. In addition, the risk of breaking of the bent protrusion 111 may be blocked as the recessed end of the bent protrusion 111 is sharply formed.
- a portion corresponding to an end of the bent protrusion 111 is automatically detected and a cutting shape is corrected based on 3D scattering data so that the end of the bent protrusion 111 has a shape that is rounded as a whole. Can be cut.
- step S202 a part corresponding to the end of the bent protrusion 111 is recognized on the 3D scanning data by computer software, and after the part is corrected to a round shape, it corresponds to a 2D CAD file. Laser processing data can be generated.
- the portion corresponding to the end of the bent protrusion 111 is recognized, and the laser machining data is corrected so that the portion is processed into a round shape. It may be.
- the retainer may be formed into a shape in which sharp edges and valleys are rounded through additional processing after laser cutting is performed without correction of cutting shapes for sharp edges and valleys.
- the retainer is laser cut to have a rounded shape by correcting the cutting shape by computer software, and sharp edges are additionally processed after laser cutting is performed without correction of the cutting shape.
- Through the round paper may be formed in a shape.
- the bent protrusion 111 may be laser cut into a shape in which the end of the bone is rounded by correcting the cutting shape on the back side. Then, the front side edge of the bent protrusion 111 may be formed by laser cutting, and then rounded through additional processing. At this time, as the end of the bone on the back side of the bent protrusion 111 is roundly cut, the thickness at which the thickness is reduced can be offset by the processing of the front edge of the bent protrusion 111.
- a retainer for maintaining a tooth arrangement is manufactured by laser cutting a shape memory alloy, but is produced by reflecting all of the inclination of each tooth, the shape of the tooth flexion, and the interdental shape based on the 3D scanning of the tooth arrangement. do.
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Abstract
Description
Claims (9)
- 3차원 스캐닝 장치를 이용하여 치아 배열의 3차원 스캐닝 데이터를 획득하는 단계;획득된 3차원 스캐닝 데이터를, 레이저 가공을 위한 레이저 가공용 데이터로 변환하는 단계; 및상기 레이저 가공용 데이터를 토대로, 모재(base material)를 레이저 가공하여 리테이너를 제작하는 단계;를 포함하는 것을 특징으로 하는, 리테이너 제작 방법.
- 제1항에 있어서,상기 치아 배열의 3차원 스캐닝 데이터는,stl 파일 포맷에 해당하는 파일인 것을 특징으로 하는, 리테이너 제작 방법.
- 제2항에 있어서,상기 획득된 3차원 스캐닝 데이터를, 레이저 가공을 위한 레이저 가공용 데이터로 변환하는 단계는,상기 stl 파일 포맷에 해당하는 상기 3차원 스캐닝 데이터 상에서 가상의 리테이너 위치를 설정하는 단계;상기 3차원 스캐닝 데이터 상에서 기준면 위치(Datum plane section)를 설정하는 단계;상기 기준면 상에서 치아 배열의 외각선을 따라 리테이너 형태를 형성하는 단계; 및형성된 리테이너 형태에 따라, 2차원의 레이저 가공용 데이터를 생성하는 단계;를 포함하는 것을 특징으로 하는, 리테이너 제작 방법.
- 제1항에 있어서,상기 레이저 가공용 데이터를 토대로, 모재(base material)를 레이저 가공하여 리테이너를 제작하는 단계는,상기 모재를 고정할 지그(jig)를 준비하는 단계;상기 지그에 모재를 안착 및 고정하는 단계;레이저 커팅수단의 설정값을 세팅하는 단계;세팅된 설정값에 따라, 상기 모재를 가공하여 상기 레이저 가공용 데이터에 상응하는 리테이너를 제작하는 단계; 및상기 모재로부터 상기 리테이너를 분리하는 단계;를 포함하는 것을 특징으로 하는, 리테이너 제작 방법.
- 제4항에 있어서,상기 모재는,니티놀(Nitinol) 재질인 것을 특징으로 하는, 리테이너 제작 방법.
- 제1항에 있어서,상기 리테이너에는 치간을 향하여 돌출되는 굴곡 돌출부가 형성되며,상기 레이저 가공용 데이터는, 상기 굴곡 돌출부의 돌출된 단부가 라운드지게 가공되도록 생성되는 것을 특징으로 하는, 리테이너 제작 방법.
- 제1항에 있어서,상기 리테이너에는 치간을 향하여 돌출되는 굴곡 돌출부가 형성되며,상기 모재를 레이저 가공하여 리테이너를 제작하는 단계 후, 상기 굴곡 돌출부의 돌출된 단부를 라운드지게 가공하는 단계;를 더 포함하는 것을 특징으로 하는, 리테이너 제작 방법.
- 제1항에 있어서,상기 리테이너의 치면을 향하는 전면과, 상기 전면에 반대되는 상기 리테이너 배면은 경사지게 형성되며,상기 모재를 레이저 가공하여 리테이너를 제작하는 단계에서, 상기 모재는 상기 리테이너의 전면과 배면에 대응하는 전면과 배면이 상면에 수직하도록 레이저 커팅되고,레이저 커팅이 실시된 후, 상기 모재의 커팅된 전면과 배면이 별도의 가공에 의해서 경사지게 가공되는 것을 특징으로 하는, 리테이너 제작 방법.
- 제1항에 있어서,상기 모재를 레이저 가공하여 리테이너를 제작하는 단계 후, 레이저 가공된 모재의 날카로운 모서리 부분을 별도로 가공하여 리네이터의 모서리 부분을 라운드지게 형성하는 단계;를 더 포함하는 것을 특징으로 하는, 리테이너 제작 방법.
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KR1020180168175A KR102144776B1 (ko) | 2018-12-24 | 2018-12-24 | 리테이너 제작 방법 |
KR10-2018-0168175 | 2018-12-24 |
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KR102600037B1 (ko) * | 2021-08-05 | 2023-11-08 | 주식회사 스마일캐드 | 리테이너 및 그의 제조방법 |
Citations (5)
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KR20150128917A (ko) * | 2013-03-13 | 2015-11-18 | 리타인테크놀로지 유쥐 (하프퉁스베슈랭크트) | 리테이너 및 그 제조 방법 |
KR20170009199A (ko) * | 2015-07-16 | 2017-01-25 | 최장권 | 레이저 가공장치 및 레이저 가공방법 |
KR101877514B1 (ko) * | 2017-06-08 | 2018-07-11 | 한국기계연구원 | 치아 교정용 와이어의 제조 시스템 및 이를 이용한 치아 교정용 와이어의 제조 방법 |
JP2018525120A (ja) * | 2015-08-26 | 2018-09-06 | イ、ジョンホ | オーダーメード型歯列矯正用角型ワイヤの製造方法 |
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KR20150128917A (ko) * | 2013-03-13 | 2015-11-18 | 리타인테크놀로지 유쥐 (하프퉁스베슈랭크트) | 리테이너 및 그 제조 방법 |
KR20170009199A (ko) * | 2015-07-16 | 2017-01-25 | 최장권 | 레이저 가공장치 및 레이저 가공방법 |
JP2018525120A (ja) * | 2015-08-26 | 2018-09-06 | イ、ジョンホ | オーダーメード型歯列矯正用角型ワイヤの製造方法 |
KR101877514B1 (ko) * | 2017-06-08 | 2018-07-11 | 한국기계연구원 | 치아 교정용 와이어의 제조 시스템 및 이를 이용한 치아 교정용 와이어의 제조 방법 |
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