CN107822723B - Method for manufacturing oral appliance - Google Patents

Method for manufacturing oral appliance Download PDF

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Publication number
CN107822723B
CN107822723B CN201711329892.XA CN201711329892A CN107822723B CN 107822723 B CN107822723 B CN 107822723B CN 201711329892 A CN201711329892 A CN 201711329892A CN 107822723 B CN107822723 B CN 107822723B
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dimensional
connecting plate
bracket
model
tooth
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CN107822723A (en
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陈启锋
陈家良
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Fujian Chifeng Institute Of Oral And Maxillofacial Orthopedic
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Fujian Chifeng Institute Of Oral And Maxillofacial Orthopedic
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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
    • 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
    • A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Engineering & Computer Science (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

The invention relates to a method for manufacturing an oral appliance, which comprises the steps of establishing a bracket database, extracting a three-dimensional model of an oral tooth, assembling a bracket on the three-dimensional model of the tooth, generating a connecting plate model, three-dimensionally printing a connecting plate object, installing the bracket on the connecting plate object, placing an arch wire and applying a correcting force to obtain a customized personalized appliance finished product. The invention fully utilizes the three-dimensional virtual technology to complete the design and manufacture of the connecting plate, thereby greatly simplifying the manufacturing process.

Description

Method for manufacturing oral appliance
The technical field is as follows:
the invention belongs to the field of orthodontic treatment, and particularly relates to a manufacturing method of an oral appliance.
Background art:
the traditional orthodontic treatment is that a bracket and a molar tube are firstly stuck to the labial side (outer side) or the lingual side (inner side) of a tooth in the oral cavity, then an orthodontic arch wire is put in, and the orthodontic force is applied to the tooth after the arch wire is ligated. The processes of assembling and applying force of the components are directly carried out in the mouth of a patient, the operation time is long, and much inconvenience is brought to doctors and patients. Moreover, due to the influence of the visual field and the urgent operation time, errors are easy to generate, which brings influence to the treatment course and the curative effect.
Application No. 201610048837.2 discloses an oral appliance and a method for making the same, comprising a plurality of brackets, an arch wire and ligations, wherein: each bracket is provided with a connecting rod, a plurality of brackets are arranged according to the tooth position structure of the oral cavity, and the outer sides of the plurality of connecting rods are wrapped with a connecting plate made of dental plastics or composite resin materials and are solidified into a whole; the arch wire is respectively arranged in a plurality of brackets and is ligated by a ligature object and applied with orthodontic force. In will correcting the ware whole and put into patient's oral cavity by the doctor again clinically, directly bond the support groove on the tooth face, then break the connecting rod and hold in the palm the groove junction, take out connecting plate and connecting rod, leave plural and worn the arch wire, the ligature and apply the support groove of just abnormal power on the tooth face, shorten just abnormal operating time greatly, and satisfy individualized customization again, have accurate efficient characteristics. The fabrication is performed primarily on a model of the patient's teeth, which is then transferred to the patient's mouth. The manufacturing process is troublesome, the process is complex, and the period is long.
How to use the mature three-dimensional virtual technology to complete the scheme of manufacturing the connecting plate through three-dimensional software becomes the object of the research of the invention.
The invention content is as follows:
the invention aims to provide a method for manufacturing an oral appliance, which is used for assembling a tooth model and a bracket by means of a virtual technology, designing a three-dimensional connecting plate model by a computer, printing a connecting plate real object by a three-dimensional printer and assembling the real bracket.
The technical scheme of the invention is realized as follows:
a manufacturing method of an oral appliance is characterized by comprising the following steps: the method comprises the following steps:
firstly, establishing a three-dimensional bracket database corresponding to a bracket with a connecting rod in a real object;
secondly, extracting a three-dimensional tooth model of the oral teeth;
thirdly, importing a three-dimensional tooth model by means of computer three-dimensional software, calling in corresponding three-dimensional brackets according to different tooth surface structures, assembling one by one, namely assembling the three-dimensional brackets on the labial side or the lingual side of the three-dimensional tooth model corresponding to the correct positions of teeth, and locking the matching relationship;
fourthly, designing a connecting plate model on the occlusal surface of the tooth directly by using three-dimensional software; the generated connecting plate model is provided with an occlusion surface indentation and a connecting rod indentation; printing a connecting plate model by using a three-dimensional printer to obtain a connecting plate real object;
fifthly, mounting bracket real objects on the connecting plate, selecting corresponding bracket real objects when mounting according to the three-dimensional tooth model, inserting the connecting rods of the brackets into the connecting rod pressing concave parts corresponding to the connecting plate, adjusting to accurate positions, and then dispensing and fixing to connect a plurality of brackets into a whole;
sixthly, after the glue is dispensed and cured, placing an arch wire in the bracket groove according to a clinical treatment scheme, ligating, and applying correction force;
seventhly, sterilizing and packaging the connecting plate and the bracket which are applied with the correcting force to form the personalized oral correcting device.
Extracting a three-dimensional tooth model, and directly scanning the oral cavity by using a three-dimensional scanner to obtain the tooth model; or scanning the manufactured oral cavity tooth physical model to obtain a three-dimensional tooth model.
In the fourth step, the generated connecting plate model is allowed to extend from the occlusal surface of the tooth to the non-undercut area on the labial lingual side; the width of the section of the connecting plate is between 5 and 20mm, and the thickness of the section is more than 1.0 mm.
In the fourth step, the generated connecting plate model is provided with one to two fractures, and the fractures are positioned between the occlusal surfaces of the adjacent teeth.
The invention fully utilizes the three-dimensional virtual technology to complete the design and manufacture of the connecting plate, thereby greatly simplifying the manufacturing process; the printed connecting plate is accurate in material object, and the trouble that the traditional adze plastic or resin is used for manufacturing the connecting plate, the shape is uncontrollable, and secondary trimming is needed is reduced; and finally, assembling object brackets on the connecting plates one by one, threading an arch wire after dispensing and curing, ligating and applying orthodontic force to obtain the oral appliance with individual customization.
Description of the drawings:
the invention is further illustrated with reference to the following specific figures:
FIG. 1 is a schematic view of a bracket
FIG. 2 is a schematic view of a bracket
FIG. 3 is a three-schematic view of a bracket
FIG. 4 is a schematic view of a three-dimensional tooth model
FIG. 5 is the schematic diagram of FIG. 4 after the three-dimensional bracket is assembled
FIG. 6 is a schematic diagram of the connection plate of FIG. 5
FIG. 7 is a schematic view of a printed circuit board
FIG. 8 is a schematic view of a bracket with a connection plate bonded thereto
Wherein
1-bracket 11-connecting rod 111-bending hook
112-nick 113-bending 2-three-dimensional tooth model
3-connecting plate 31-occlusal surface indentation 32-connecting rod indentation
33-fracture 4-arch wire
The specific implementation mode is as follows:
the manufacturing method of the oral appliance comprises the following steps:
firstly, establishing a three-dimensional bracket database corresponding to the bracket with the connecting rod in real object.
Referring to fig. 1, the first bracket, which is a specific structure of a movable wing, is suitable for being fixed at the labial side of incisors and cuspids, and a connecting rod 11 is extended at one end of the base of the first bracket 1, and the end of the connecting rod is of a bent hook 111 structure, and can be abutted against the occlusal surface during assembly, so as to provide a matching reference, and can be reliably embedded into the connecting plate 3, and the adhesive can bear enough corrective force after curing. Furthermore, the connecting rod 11 has a plurality of notches 112 towards the bracket surface, so that the specific height of each bracket 1 bonded on the tooth surface can be known during operation, and the bonding accuracy is improved.
Referring to fig. 2, the bracket b is a specific structure of a movable wing, and is suitable for being fixed on the front molar tooth surface, a connecting rod 11 also extends from one end of the base of the bracket 1, the connecting end is in a bent 113 structure and can abut against the occlusal surface to provide an assembly reference, and the bracket b is fixed on the connecting plate 3 and bears the correction force of the arch wire, and the surface of the bracket b is also provided with a plurality of nicks 112.
Referring to fig. 3, the bracket three, which is a molar tube body structure, is adapted to be fixed on the molar surface, and is also provided with a connecting rod 11, a bent 113 structure at the end of the connecting rod, and a notch 112 on the surface of the connecting rod. Clinically, incisors and canines are the main body of correction, and the correction force applied is large, so that the end of the connecting rod is of a bent 113 structure, and reliable bonding with the connecting plate 3 can be ensured.
The present embodiment lists the above three common brackets, which may also be brackets with other shapes and functions, if the bracket is manufactured by modeling with three-dimensional software of a personal computer, such as Pro/engine, unity NX, soldworks, or exocad dental CAD design software, then the bracket is printed into a real object by a numerical control lathe or a three-dimensional printer. At this time, only the database needs to be called.
Secondly, extracting a three-dimensional tooth model of the oral teeth; specifically, there are two methods, one of which is to directly scan the oral cavity by using a three-dimensional scanner; and secondly, scanning the manufactured oral tooth physical model by the three-dimensional scanner to obtain a three-dimensional tooth model.
Referring to fig. 4, the three-dimensional tooth model 2 obtained by three-dimensional scanning can be retrieved and assembled under computer three-dimensional software. A three-dimensional scanner such as an AutoScan-DS300 dental three-dimensional scanner.
And thirdly, importing the three-dimensional tooth model 2 by means of computer three-dimensional software, calling the corresponding three-dimensional brackets 1 according to different tooth surface structures, assembling one by one, namely assembling the three-dimensional brackets 1 on the labial side or the lingual side of the three-dimensional tooth model 2 corresponding to the correct positions of the teeth, and locking the matching relation. In particular, the reference numerals of the three-dimensional bracket still refer to those of the bracket 1 in fig. 1 to 3; the connecting plate model and the printed physical connecting plate are both marked with the reference number 3, the same as below.
As shown in fig. 5, when the three-dimensional tooth model 2 and the three-dimensional bracket 1 are assembled in the three-dimensional software, the three-dimensional bracket 1 is locked at the correct position for correction, and the bending hook 111 or the bending 113 of the connecting rod of the bracket is kept to abut against the occlusal surface of the tooth, so that another matching reference is formed.
Fourthly, designing a connecting plate model on the occlusal surface of the tooth directly by using three-dimensional software; the generated connecting plate model is provided with an occlusion surface indentation and a connecting rod indentation; and printing the connecting plate model by using a three-dimensional printer to obtain a real object of the connecting plate 3.
As shown in fig. 6, in fig. 5, the tooth directly abuts against the occlusal surface of the tooth and the connecting rod, namely, the bent hook 111 or the bent 113, outside the end of the occlusal surface; generating a filling body with a concave pressure surface, namely designing a connecting plate model 3, and hiding the three-dimensional tooth model 2 and the three-dimensional bracket 1 after the rigidity requirement is met; the web model 3, and in particular the resulting occlusal surface indentions 31 and connecting rod indentions 32, are inspected for clean and burr-free edges and printed, printed physical objects of the web 3, as shown in fig. 7.
In the step, the generated connecting plate model 3 is allowed to extend from the occlusal surface of the tooth to the non-undercut area on the labial and lingual sides; the width of the section of the connecting plate is between 5 and 20mm, and the thickness of the section is more than 1.0 mm.
And when the plate model 3 is generated, one to two fractures 33 can be provided, and the fractures 33 are positioned between occlusal surfaces of adjacent teeth. When the adjacent teeth are seriously staggered and cannot be directly arranged on the occlusal surface of the teeth in the oral cavity, the teeth are conveniently cut off at the fracture, and the two sections are respectively arranged.
Fifthly, assembling the bracket 1 object on the connecting plate 3, selecting the corresponding bracket object when assembling according to the three-dimensional tooth model, inserting the connecting rod of the bracket 1 into the connecting rod indentation 32 corresponding to the connecting plate 3, adjusting to the accurate position, dispensing and fixing to connect the plurality of brackets 1 into a whole. That is, after the web 3 is obtained, the reverse operation is performed, and the corresponding bracket 1 is loaded in the connecting-rod depressing portion 32 of the web 3.
Sixthly, after the glue is dispensed and cured, according to a clinical treatment scheme, an arch wire 4 is placed in a groove of the bracket 1, ligation is performed, and correction force is applied, and ligation objects such as a ligature ring or a ligature wire are omitted in the drawing. By virtue of the rigidity of the webs 3, it is permitted to place an archwire 4 in the fixed bracket 1 and perform ligation and the application of corrective force. The final product is shown in FIG. 8.
Seventhly, sterilizing and packaging the connecting plate and the bracket which are applied with the correcting force to form the personalized oral correcting device.
The oral cavity appliance is customized by factory according to the tooth type structure of a patient, so that the clinical operation time is greatly shortened, only two steps are clinically performed, a three-dimensional tooth model of the oral cavity teeth is extracted, and the finished oral cavity appliance is arranged in the oral cavity. Because the oral cavity is customized from patient's tooth model, extremely coincide with patient's tooth, clinically, only need paste the support groove on the oral cavity is rescued one by one and is corresponded the tooth face, grind off connecting rod and support groove junction after the solidification, take out connecting plate and connecting rod, leave a plurality of and worn arch wire, ligature thing and applied the support groove of just abnormal power and on the tooth face, put in place in one step.

Claims (4)

1. A manufacturing method of an oral appliance is characterized by comprising the following steps: the method comprises the following steps:
firstly, establishing a three-dimensional bracket database corresponding to a bracket with a connecting rod in a real object;
secondly, extracting a three-dimensional tooth model of the oral teeth;
thirdly, importing a three-dimensional tooth model by means of computer three-dimensional software, calling in corresponding three-dimensional brackets according to different tooth surface structures, assembling one by one, namely assembling the three-dimensional brackets on the labial side or the lingual side of the three-dimensional tooth model corresponding to the correct positions of teeth, and locking the matching relationship;
fourthly, designing a connecting plate model on the occlusal surface of the tooth directly by using three-dimensional software; the generated connecting plate model is provided with an occlusion surface indentation and a connecting rod indentation; printing a connecting plate model by using a three-dimensional printer to obtain a connecting plate real object;
fifthly, mounting bracket real objects on the connecting plate, selecting corresponding bracket real objects when mounting according to the three-dimensional tooth model, inserting the connecting rods of the brackets into the connecting rod pressing concave parts corresponding to the connecting plate, adjusting to accurate positions, and then dispensing and fixing to connect a plurality of brackets into a whole;
sixthly, after the glue is dispensed and cured, placing an arch wire in the bracket groove according to a clinical treatment scheme, ligating, and applying correction force;
seventhly, sterilizing and packaging the connecting plate and the bracket which are applied with the correcting force to form the personalized oral correcting device.
2. The method of claim 1, wherein the method comprises: extracting a three-dimensional tooth model, and directly scanning the oral cavity by using a three-dimensional scanner to obtain the three-dimensional tooth model; or scanning the manufactured oral cavity tooth physical model to obtain a three-dimensional tooth model.
3. The method of claim 1, wherein the method comprises: in the fourth step, the generated connecting plate model is allowed to extend from the occlusal surface of the tooth to the non-undercut area on the labial and lingual sides; the width of the section of the connecting plate is between 5 and 20mm, and the thickness of the section is more than 1.0 mm.
4. The method of claim 1 or 3, wherein the method comprises: and in the fourth step, the generated connecting plate model is provided with one to two fractures, and the fractures are positioned between occlusal surfaces of adjacent teeth.
CN201711329892.XA 2017-12-13 2017-12-13 Method for manufacturing oral appliance Active CN107822723B (en)

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CN107822723B true CN107822723B (en) 2022-05-13

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102435223B1 (en) * 2019-02-18 2022-08-24 츄부 메디컬 유겐가이샤 orthodontic appliance
CN110090083B (en) * 2019-04-12 2020-07-24 张正朴 Self-adaptive indirect bracket pasting bracket
CN110507434B (en) * 2019-07-30 2020-08-14 张正朴 Mounting device for directly adhering bracket to tooth surface
CN110478063B (en) * 2019-07-30 2021-02-19 张正朴 Method for directly bonding bracket
CN111572025A (en) * 2020-04-30 2020-08-25 杭州口腔医院集团有限公司 Preparation method of 3D guide plate for MSE maxillary bone arch expansion
CN114983596A (en) * 2022-04-20 2022-09-02 西北民族大学 Method for manufacturing oral cavity tray positioner based on 3D printing technology

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7252509B2 (en) * 2002-09-17 2007-08-07 Orametrix, Inc. Tooth templates for bracket positioning and other uses
FR3002431B1 (en) * 2013-02-23 2017-12-29 Robert Duchateau VESTIBULAR ORTHODONTIC DEVICE
CN105662614B (en) * 2016-01-25 2018-07-27 陈启锋 A kind of oral appliance and preparation method thereof
CN105534614B (en) * 2016-02-05 2018-05-04 浙江中医药大学 Split type biteplate and Split type differential tooth jaw apparatus for shaping
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

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