CN114246695A - Bionic prosthesis based on 3D printing technology and manufacturing method thereof - Google Patents
Bionic prosthesis based on 3D printing technology and manufacturing method thereof Download PDFInfo
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- CN114246695A CN114246695A CN202210011421.9A CN202210011421A CN114246695A CN 114246695 A CN114246695 A CN 114246695A CN 202210011421 A CN202210011421 A CN 202210011421A CN 114246695 A CN114246695 A CN 114246695A
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000005516 engineering process Methods 0.000 title claims abstract description 22
- 238000010146 3D printing Methods 0.000 title claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 210000000214 mouth Anatomy 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 230000003239 periodontal effect Effects 0.000 claims abstract description 10
- 238000005498 polishing Methods 0.000 claims abstract description 9
- 238000007639 printing Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000001954 sterilising effect Effects 0.000 claims abstract description 4
- 239000000654 additive Substances 0.000 claims description 16
- 230000000996 additive effect Effects 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 11
- 229910010293 ceramic material Inorganic materials 0.000 claims description 8
- 230000003592 biomimetic effect Effects 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 210000002455 dental arch Anatomy 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000008439 repair process Effects 0.000 abstract description 8
- 230000003796 beauty Effects 0.000 abstract description 3
- 238000002513 implantation Methods 0.000 abstract description 2
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 description 8
- 230000014759 maintenance of location Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 210000004513 dentition Anatomy 0.000 description 4
- 230000036346 tooth eruption Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical class [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000000110 selective laser sintering Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 210000004261 periodontium Anatomy 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011410 subtraction method Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—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
- B33Y10/00—Processes of additive manufacturing
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- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Dentistry (AREA)
- Manufacturing & Machinery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Dental Prosthetics (AREA)
Abstract
The invention discloses a bionic prosthesis based on a 3D printing technology and a manufacturing method thereof.A buccal scanner is used for scanning a buccal or lingual preparation area of an upper jaw and a lower jaw after clinical dental preparation, and the upper jaw and the lower jaw are subjected to median occlusal registration; generating a digital file, and printing a 3D resin working model by using image three-dimensional reconstruction software; manufacturing and molding the designed bionic prosthesis through a 3D printer; checking, namely adjusting and sealing the printed bionic prosthesis after the bionic prosthesis is in place on the 3D resin working model; polishing the lingual side of the bionic prosthesis; sterilizing the bionic prosthesis; adhering the bionic prosthesis to the teeth in the oral cavity. The invention achieves the aims of effectively fixing loose teeth, auxiliary treatment before and after periodontal surgery, occlusion lifting of occlusion reconstruction, beauty repair treatment and implantation of transitional false teeth by copying the appearance of the natural tooth form of a patient, manufacturing a prosthesis and then applying methods such as bonding and the like.
Description
Technical Field
The invention relates to the technical field of tooth restoration, in particular to a bionic restoration based on a 3D printing technology and a manufacturing method thereof.
Background
With the development of economy and the improvement of the living standard of people, the requirement of people on oral aesthetics is higher and higher, but in reality, the appearance is affected because of abnormal tooth shapes, such as conical teeth, scattered gaps among teeth, abnormal tooth color and the like, or the functions are affected because of tooth looseness, defect and loss caused by periodontal, trauma and other factors. The traditional treatment method mostly adopts full crown repair, but a large amount of tooth tissues can be abraded, so that the problems of tooth bodies and periodontium are frequent. The existing method for manufacturing the periodontal splint is to manufacture the periodontal splint by a selective laser sintering technology, uses titanium alloy or cobalt-chromium alloy as raw materials and then is stuck in the oral cavity, and has the defect 1 that the metal material has artifacts and interference when a tooth image is shot. 2. The unattractive metal material results in limited application range, and only has good effect on the lower tooth lingual surface, and the other parts of the dentition cannot be used. 3. The design of the shape causes small contact area and insufficient retention strength, so that the number of abutments needs to be increased to achieve the requirement of stable retention. 4. When the elastic modulus of the metal material is large, adjustment such as deformation is difficult, and the metal material needs to be manufactured again. 5. And the later-stage intraoral bonding technology is complicated to operate, 6. intraoral polishing is required, the smoothness of the bonded surface is poor, and the efficiency is low. It is liable to cause plaque to adhere in the mouth. In view of the above-mentioned problems, there is a need for a 3D printing technology-based biomimetic prosthesis and a method for manufacturing the same, by which the developed biomimetic prosthesis effectively solves the corresponding technical problems.
Disclosure of Invention
The invention aims to provide a bionic prosthesis based on a 3D printing technology and a manufacturing method thereof, and aims to manufacture the existing method for manufacturing a periodontal splint by a selective laser sintering technology, wherein a titanium alloy or a cobalt-chromium alloy is used as a raw material and then is bonded in an oral cavity, and the defect 1 is that an artifact occurs in a tooth-photographing image of a metal material and the artifact has interference. 2. The unattractive metal material results in limited application range, and only has good effect on the lower tooth lingual surface, and the other parts of the dentition cannot be used. 3. The design of the shape causes small contact area and insufficient retention strength, so that the number of abutments needs to be increased to achieve the requirement of stable retention. 4. When the elastic modulus of the metal material is large, adjustment such as deformation is difficult, and the metal material needs to be manufactured again. 5. And the later-stage intraoral bonding technology is complicated to operate, 6. intraoral polishing is required, the smoothness of the bonded surface is poor, and the efficiency is low. The problem of plaque attachment in the mouth is easily caused.
The invention is realized by the following steps: the invention discloses a bionic prosthesis based on a 3D printing technology and a manufacturing method thereof, wherein the bionic prosthesis comprises the following steps:
the first step is as follows: after clinical tooth preparation, scanning buccal or lingual surface preparation areas of the upper jaw and the lower jaw by using an intraoral scanner, and carrying out median occlusion registration on the upper jaw and the lower jaw;
the second step is that: generating a digital file, and printing a 3D resin working model by using image three-dimensional reconstruction software;
the third step: manufacturing and molding the designed bionic prosthesis through a 3D printer;
the fourth step: checking, namely adjusting and sealing the printed bionic prosthesis after the bionic prosthesis is in place on the 3D resin working model;
the fifth step: polishing the lingual side of the bionic prosthesis;
and a sixth step: sterilizing the bionic prosthesis;
the seventh step: adhering the bionic prosthesis to the teeth in the oral cavity.
Further, in step 1, the scanning edge exceeds the edge of the preparation area by 2 mm, and a tooth cutting end is required to be included for generating a virtual model of the dental arch.
And further, in the step 2, performing bionic design on the bionic prosthesis, and storing the bionic prosthesis as a digital model file supporting a standard image file format of the 3D printer for transmission.
Furthermore, in the step 3, according to the design, photosensitive resin, metal or oral cavity ceramic materials are used, different additive manufacturing technical forms are adopted, the additive manufacturing technical forms comprise three-dimensional photocuring forming (SLA), three-dimensional jet printing (3 DP) and fused deposition rapid Forming (FDM), the additive manufacturing crown and bridge resin materials are selected, the physical and chemical properties such as the elastic modulus and the like of the additive manufacturing oral cavity ceramic materials are close to those of the autologous teeth, the adjustment is easy when problems occur, the repair is simple, and the autologous teeth are not damaged or abraded.
Further, the lingual side of the periodontal splint is polished by a cloth wheel polisher in step 5.
Furthermore, the adjacent teeth comprise abduction gaps and adjacent tooth contact areas, and the part of the bionic prosthesis corresponding to the adjacent tooth contact areas extends to and fills the concave formed by the adjacent tooth contact areas.
A bionic prosthesis based on 3D printing technology is prepared as preparing bionic prosthesis according to shape of restored tooth, copying shape of natural tooth completely, adhering it on surface of tooth body in full covering mode to increase adhesive area, preparing prosthesis by 3D printing after taking out mould digitally to complete adjustment on model, preparing crown and bridge resin material by additive material, preparing elastic modulus of oral cavity ceramic material by additive material and making it be similar to self tooth in physical and chemical properties.
Furthermore, cutting lines are arranged on the boundary of the bionic prosthesis and the aligning matching part, and a plurality of long holes are formed at intervals of set intervals along the cutting lines;
forming a plurality of connecting ports to connect the frame and the alignment matching part of the bionic prosthesis, and bending the connecting ports and the corner boundary surfaces of the temporary tooth parts to form cutting lines;
the registration fit is formed to fit the temporary fit surface perimeter fixture shape profile in the oral cavity interior surface information of the three-dimensional work image.
Compared with the prior art, the invention has the beneficial effects that:
the invention achieves the aims of effectively fixing loose teeth, auxiliary treatment before and after periodontal surgery, occlusion lifting beauty repair treatment of occlusion reconstruction and implantation of transitional false teeth by copying the appearance of the natural tooth form of a patient, manufacturing a prosthesis and then applying methods such as bonding and the like. The efficient and accurate efficient repair mode can be realized through the additive manufacturing mode, the defects that consumables of a cutting mode of a CAD/CAM subtraction method and the waste cutting appearance of a cutting tool are limited are overcome, and meanwhile, a more ideal fixing mode is provided for periodontal recovery forming through high-precision design.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described clearly and completely in conjunction with the introduction of the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Thus, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
A bionic prosthesis manufacturing method based on 3D printing technology comprises the following steps:
the first step is as follows: after clinical tooth preparation, scanning buccal or lingual surface preparation areas of upper jaw and lower jaw dentition by using an intraoral scanner, and carrying out median occlusion registration on the upper jaw and the lower jaw, wherein the scanning edge exceeds the edge of the preparation area by 2 mm and needs to comprise a tooth cutting end for generating a virtual model of a dental arch;
the second step is that: generating a digital file, printing a 3D resin working model by using image three-dimensional reconstruction software, performing bionic design on a bionic prosthesis, and storing the digital model file as a digital model file supporting a standard image file format of a 3D printer for transmission;
the third step: the designed bionic prosthesis is manufactured and molded through a 3D printer, different additive manufacturing technical forms are adopted according to the design requirement, such as but not limited to (the additive manufacturing technical forms comprise three-dimensional light curing molding (SLA), three-dimensional jet printing (3 DP) and fused deposition rapid molding (FDM)), additive manufacturing crown and bridge resin materials are selected, the elasticity modulus of the additive manufacturing oral ceramic material is close to that of the autologous tooth, the physical and chemical properties are similar to those of the autologous tooth, the adjustment is easy when problems occur, the repair is simple, and the autologous tooth is not damaged or abraded;
the fourth step: checking, namely adjusting and sealing the printed bionic prosthesis after the bionic prosthesis is in place on the 3D resin working model;
the fifth step: polishing the lingual side of the bionic prosthesis, and polishing the lingual side of the periodontal splint by using a cloth wheel polishing machine;
and a sixth step: sterilizing the bionic prosthesis;
the seventh step: adhering the bionic prosthesis to the teeth in the oral cavity.
The production process of the method is that the adjacent teeth comprise abduction gaps and adjacent tooth contact areas, and the part of the bionic prosthesis corresponding to the adjacent tooth contact areas extends to and fills the concave formed by the adjacent tooth contact areas.
The bionic prosthesis based on the 3D printing technology is manufactured by the embodiment, the bionic prosthesis is manufactured according to the shape of the repaired tooth, the shape of a natural tooth is completely copied, the bionic prosthesis is adhered to the surface of the tooth body in a full-covering mode, the bonding area is increased greatly, the 3D printing manufactured prosthesis can be modified on a model after digital mold removal, a crown and bridge resin material is manufactured by using an additive, the elastic modulus and the physical and chemical properties of an oral ceramic material are close to those of a self tooth, cutting lines are arranged on the boundary of the bionic prosthesis and an alignment matching part, and a plurality of long holes are formed in a penetrating mode at set intervals along the cutting lines;
forming a plurality of connecting ports to connect the frame and the alignment matching part of the bionic prosthesis, and bending the connecting ports and the corner boundary surfaces of the temporary tooth parts to form cutting lines;
the registration fit is formed to fit the temporary fit surface perimeter fixture shape profile in the oral cavity interior surface information of the three-dimensional work image.
The prosthesis manufactured based on the scheme has the following characteristics: the material is made of additive manufacturing crown and bridge resin, and does not interfere with tooth images.
The invention can be applied to any position of the complete dentition and achieves the unification of function and beauty.
The invention is a restoration body shape rather than a simple connector, is designed to be manufactured according to the shape of the restored tooth, completely copies the shape of a natural tooth, is fully covered and adhered to the surface of the tooth, increases the adhesion area, has good retention and stability effects, and can meet the bionic requirement.
The selected additive manufacturing crown and bridge resin material has physical and chemical properties such as elastic modulus and the like which are close to those of the autologous teeth, and the additive manufacturing oral ceramic material is easy to adjust and repair when problems occur and does not damage or abrade the autologous teeth.
The original design scheme can be digitally stored, and can be manufactured again without re-mold taking when problems occur.
The 3D printing manufactured restoration body after the digital model taking can be modified on the model, so that the operation of clinical in-place is reduced, and the efficiency is high.
After the preparation, the outside of the mouth is polished, and the polishing degree of the surface of the repair body reaches a high standard. Worn in the mouth with little plaque attachment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A bionic prosthesis manufacturing method based on 3D printing technology, which is characterized in that,
the first step is as follows: after clinical tooth preparation, scanning buccal or lingual surface preparation areas of the upper jaw and the lower jaw by using an intraoral scanner, and carrying out median occlusion registration on the upper jaw and the lower jaw;
the second step is that: generating a digital file, and printing a 3D resin working model by using image three-dimensional reconstruction software;
the third step: manufacturing and molding the designed bionic prosthesis through a 3D printer;
the fourth step: checking, namely adjusting and sealing the printed bionic prosthesis after the bionic prosthesis is in place on the 3D resin working model;
the fifth step: polishing the lingual side of the bionic prosthesis;
and a sixth step: sterilizing the bionic prosthesis;
the seventh step: adhering the bionic prosthesis to the teeth in the oral cavity.
2. A method for manufacturing a biomimetic prosthesis based on 3D printing technology as claimed in claim 1, wherein the scanning edge exceeds the edge of the preparation area by 2 mm in step 1, and includes a tooth cutting end for generating a virtual model of dental arch.
3. The method for manufacturing a bionic prosthesis based on a 3D printing technology according to claim 2, wherein in step 2, the bionic design of the bionic prosthesis is performed and stored as a digital model file supporting a standard image file format of a 3D printer for transmission.
4. The method for manufacturing a biomimetic prosthesis based on 3D printing technology as claimed in claim 1, wherein in step 3, different additive manufacturing technology forms are adopted according to design requirements using photosensitive resin, metal or oral ceramic material.
5. The method for manufacturing a biomimetic prosthesis based on 3D printing technology according to claim 1, wherein a buffing machine is used to polish the lingual side of the periodontal splint in step 5.
6. The method for manufacturing a biomimetic prosthesis based on 3D printing technology according to any one of claims 1-5, wherein the adjacent teeth include a abduction gap and an adjacent tooth contact area therebetween, and a portion of the biomimetic prosthesis corresponding to the adjacent tooth contact area extends to and fills a recess formed by the adjacent tooth contact area.
7. A bionic prosthesis based on 3D printing technology is characterized in that the bionic prosthesis is manufactured according to the shape of a restored tooth, the shape of a natural tooth is completely copied, the bionic prosthesis is adhered to the surface of the tooth in a full-covering mode, the adhering area is increased greatly, the prosthesis manufactured through 3D printing after digital model taking can be modified on a model, a crown and bridge resin material is manufactured through material addition, and the physical and chemical properties such as the elastic modulus and the like of an oral ceramic material manufactured through material addition are close to those of an autologous tooth.
8. The prosthesis according to claim 7, wherein a cutting line is provided at the boundary between the prosthesis and the aligning matching part, and a plurality of long holes are formed through the cutting line at set intervals;
forming a plurality of connecting ports to connect the frame of the bionic prosthesis and the aligning and matching part, and bending the connecting ports and the corner boundary surfaces of the temporary tooth parts to form cutting lines;
forming the registration fit to fit the temporary fit surface perimeter fixture shape profile in the oral cavity interior surface information of the three-dimensional work image.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210011421.9A CN114246695A (en) | 2022-01-06 | 2022-01-06 | Bionic prosthesis based on 3D printing technology and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210011421.9A CN114246695A (en) | 2022-01-06 | 2022-01-06 | Bionic prosthesis based on 3D printing technology and manufacturing method thereof |
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| CN114246695A true CN114246695A (en) | 2022-03-29 |
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