CN114366361A - Preparation process of porcelain tooth - Google Patents
Preparation process of porcelain tooth Download PDFInfo
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- CN114366361A CN114366361A CN202210000875.6A CN202210000875A CN114366361A CN 114366361 A CN114366361 A CN 114366361A CN 202210000875 A CN202210000875 A CN 202210000875A CN 114366361 A CN114366361 A CN 114366361A
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- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 80
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 101
- 239000000919 ceramic Substances 0.000 claims abstract description 74
- 239000002994 raw material Substances 0.000 claims abstract description 34
- 238000005245 sintering Methods 0.000 claims abstract description 27
- 230000007797 corrosion Effects 0.000 claims abstract description 25
- 238000005260 corrosion Methods 0.000 claims abstract description 25
- 238000007689 inspection Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000004806 packaging method and process Methods 0.000 claims abstract description 8
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 238000011282 treatment Methods 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 claims abstract description 5
- 239000003513 alkali Substances 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000005728 strengthening Methods 0.000 claims abstract description 4
- 238000004381 surface treatment Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 238000005498 polishing Methods 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 claims description 24
- 230000010485 coping Effects 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 11
- 230000032683 aging Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000011819 refractory material Substances 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000007670 refining Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 7
- 239000002585 base Substances 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 5
- 230000035882 stress Effects 0.000 description 4
- 230000009970 fire resistant effect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/08—Artificial teeth; Making same
- A61C13/083—Porcelain or ceramic teeth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/08—Artificial teeth; Making same
- A61C13/083—Porcelain or ceramic teeth
- A61C13/0835—Ceramic coating on metallic body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62222—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining ceramic coatings
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/74—Ceramic products containing macroscopic reinforcing agents containing shaped metallic materials
- C04B35/76—Fibres, filaments, whiskers, platelets, or the like
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
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- Structural Engineering (AREA)
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Abstract
The application relates to a preparation process of a porcelain tooth, which relates to the field of tooth crushing and repairing technology, and comprises the steps of S1, manufacturing a metal inner crown; s2, removing the flash and burr of the metal inner crown, and then polishing; s3, surface treatment: performing acid and alkali corrosion resistance treatment on the outer surface of the metal inner crown and strengthening the surface hardness; s4, preparing a ceramic raw material; s5, sintering the ceramic outer crown: uniformly mixing ceramic raw materials, uniformly coating the ceramic raw materials on the outer surface of the metal inner crown to form a ceramic outer crown, and sintering and curing the metal inner crown and the ceramic outer crown in a sintering furnace to form a ceramic tooth; s6, detection: carrying out internal and external quality inspection on the finished porcelain teeth; s7, cleaning: washing the porcelain teeth which are qualified through detection; s8, packaging: and drying and packaging the rinsed porcelain teeth. This application has the toughness and the intensity that improve the porcelain tooth, makes the ceramic outer crown of porcelain tooth be difficult for taking place to collapse porcelain, improves its life's effect.
Description
Technical Field
The application relates to the field of tooth breaking and repairing technology, in particular to a preparation process of porcelain teeth.
Background
The porcelain tooth is a restored dental crown for restoring the defect of the tooth so as to enable the tooth to achieve the original function and the beautiful requirement, and is mainly divided into an inner crown and a glaze porcelain layer from the structure, and is divided into a metal inner crown and a full porcelain inner crown porcelain from the texture, and the porcelain tooth adopting the metal inner crown has relatively low cost and high cost performance, so that the porcelain tooth is widely applied.
At present, porcelain tooth need make the metal inner crown earlier in preparation technology, then at the outside sintering ceramic outer crown of metal inner crown, but, ceramic outer crown toughness is relatively poor after the sintering, produces the phenomenon that collapses the porcelain easily, and the pottery of sintering in the metal inner crown outside takes place to collapse the porcelain after, exposes the metal inner crown easily, and it not only can influence the pleasing to the eye of tooth, and the metal inner crown is subject to acid-base corrosion easily moreover to lead to certain destruction to the fact the metal inner crown, lead to the hardness to reduce, influence the subsequent life of porcelain tooth.
Disclosure of Invention
In order to improve the toughness and the strength of the porcelain teeth, the porcelain outer crown of the porcelain teeth is not easy to break, and the service life of the porcelain teeth is prolonged.
The application provides a preparation technology of porcelain teeth, which adopts the following technical scheme:
a preparation process of porcelain teeth comprises the following steps:
s1, manufacturing a metal inner crown: firstly, drawing a model of the metal coping by adopting a CAM technology, and then sintering a metal raw material by adopting a sintering furnace to form the metal coping;
s2, removing the flash and burr of the metal inner crown, and then polishing;
s3, surface treatment: performing acid and alkali corrosion resistance treatment on the outer surface of the metal inner crown and strengthening the surface hardness;
s4, preparing a ceramic raw material: the ceramic raw materials comprise ceramic powder and superfine fiber;
s41, coating a refractory material on the outer surface of the superfine fiber yarn;
s42, proportioning the porcelain powder and the superfine fiber yarns according to the process proportion for subsequent sintering;
s5, sintering the ceramic outer crown: uniformly mixing ceramic raw materials, uniformly coating the ceramic raw materials on the outer surface of the metal inner crown to form a ceramic outer crown, and sintering and curing the metal inner crown and the ceramic outer crown in a sintering furnace to form a ceramic tooth;
s6, detection: carrying out internal and external quality inspection on the finished porcelain teeth;
s7, cleaning: washing the porcelain teeth which are qualified through detection;
s8, packaging: and drying and packaging the rinsed porcelain teeth.
By adopting the technical scheme, in the preparation process of the porcelain tooth, the corrosion-resistant material is coated on the outer side of the metal inner crown, so that the acid-base corrosion resistance treatment is carried out on the outer surface of the metal inner crown, the surface hardness is enhanced, and the protection of the metal inner crown is further improved; the superfine fiber coated with the refractory material is added into the ceramic raw material, and the superfine fiber has extremely strong toughness, so that the toughness of the ceramic raw material is greatly enhanced, the adhesion of ceramic powder is improved, the ceramic outer crown is difficult to collapse, the stability of the appearance of the ceramic is improved, and the service life of the ceramic is prolonged.
Optionally, in S1, when opening the furnace to take the metal coping, the metal coping needs to be naturally cooled, and after the temperature of the metal coping is reduced to 700 ℃, the furnace is opened to take the metal coping.
By adopting the technical scheme, after the temperature is reduced to 700 ℃, the inside and the outside of the metal inner crown are completely solidified, the specification and the size are stable, and the metal inner crown is not easy to deform, so that the stability, the strength and the yield of the metal inner crown are ensured.
Optionally, in S2, before the metal coping is polished, annealing, tempering, and quenching and tempering heat treatment is performed on the metal coping.
By adopting the technical scheme, the mechanical property of the metal inner crown can be remarkably improved through heat treatment, the internal stress is reduced, and the hardness of the metal inner crown is improved, so that the service life of the metal inner crown is prolonged, and the maintenance cost and the maintenance time are saved.
Optionally, in S3, the outer surface of the metal coping is coated with a corrosion-resistant layer made of cran.
By adopting the technical scheme, the corrosion-resistant layer made of the CrAlN material has good corrosion resistance and plays a good role in protecting the metal inner crown in the metal inner crown, and the CrAlN material has ultrahigh hardness and wear resistance, so that the surface hardness of the metal inner crown is further enhanced.
Optionally, in S3, the metal coping has a thickness of 0.25 to 0.28 mm.
Through adopting above-mentioned technical scheme, the metal coping has stronger acid and alkali corrosion resistance and intensity after heat treatment and corrosion-resistant layer are to surface quality's reinforcement to can make the wall thickness of metal coping do thinner, and then make the outer crown of pottery can be thicker, improve the pleasing to the eye degree and the authenticity of the outer crown of pottery.
Optionally, in S4, the ceramic raw material comprises the following components in percentage by weight: 7-9% of superfine fiber filaments and the balance of porcelain powder.
Through adopting above-mentioned technical scheme, it is inside both can guarantee that the porcelain powder fully wraps up superfine fiber silk under this proportion, makes superfine fiber silk be difficult for receiving wearing and tearing, can make the porcelain powder form certain adhesion with superfine fiber silk simultaneously again and be connected, improves the toughness of ceramic outer crown, makes the outer crown of pottery be difficult for collapsing porcelain.
Optionally, in S5, a sintering furnace is used to sinter and solidify the ceramic raw material, the ceramic raw material needs to be heated to 750-850 ℃ for 2-3 minutes.
By adopting the technical scheme, the sintering furnace is convenient for controlling the temperature of the ceramic raw material, the temperature is controlled to be 750-850 ℃, and the ceramic raw material can be ensured to be bonded with the metal inner crown more firmly.
Optionally, in S6, the porcelain teeth qualified by inspection are artificially aged.
By adopting the technical scheme, the internal stress of the porcelain tooth can be quickly reduced by artificial aging, so that the porcelain tooth is not easy to deform or locally crack, and the mechanical property of the porcelain tooth is improved.
Optionally, in S6, performing nondestructive inspection on the porcelain tooth by using an x-ray inspection machine.
By adopting the technical scheme, the X-ray flaw detector can perform nondestructive detection flaw detection on the inner and outer cracks of the porcelain teeth, and is more efficient and accurate compared with manual detection, so that the product quality of the porcelain teeth is ensured.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in the preparation process of the porcelain tooth, the corrosion-resistant material is coated on the outer side of the metal inner crown, so that the acid-base corrosion resistance treatment is carried out on the outer surface of the metal inner crown, the surface hardness is enhanced, and the protection of the metal inner crown is further improved;
2. the superfine fiber coated with the refractory material is added into the ceramic raw material, and the superfine fiber has extremely strong toughness, so that the toughness of the ceramic raw material is enhanced, the adhesion of ceramic powder is improved, the ceramic outer crown is not easy to collapse, the stability of the appearance of the ceramic is improved, and the service life of the ceramic is prolonged
3. After the temperature is reduced to 700 ℃, the furnace is opened to take a part, the inside and the outside of the metal inner crown are completely solidified, the specification and the size are relatively stable, and the metal inner crown is not easy to deform, so that the stability, the strength and the yield of the metal inner crown are ensured;
4, the corrosion-resistant layer made of the CrAlN material has good corrosion resistance and plays a good role in protecting the metal inner crown in the metal inner crown, and the CrAlN material has ultrahigh hardness and wear resistance, so that the surface hardness of the metal inner crown is further enhanced;
5. after the metal inner crown is subjected to heat treatment and the strengthening of the corrosion-resistant layer on the surface quality, the metal inner crown has stronger acid-base corrosion resistance and strength, so that the wall thickness of the metal inner crown can be thinner, the ceramic outer crown can be thicker, and the attractiveness and authenticity of the ceramic outer crown are improved.
Drawings
FIG. 1 is a schematic flow chart showing a process for preparing a porcelain tooth.
Detailed Description
The present application is described in further detail below with reference to fig. 1.
The embodiment of the application discloses a preparation process of porcelain teeth. Referring to fig. 1, the method includes the following steps:
s1, manufacturing a metal inner crown: the CAM technology is adopted to firstly draw a model of the metal inner crown, then the metal raw material is sintered by the sintering furnace to form the metal inner crown, when the metal inner crown is opened to take the metal inner crown, the metal inner crown needs to be naturally cooled, after the temperature of the metal inner crown is reduced to 700 ℃, a workpiece is taken after the metal inner crown is opened, and after the temperature is reduced to 700 ℃, the metal inner crown can be completely solidified inside and outside, so that the specification and the size of the metal inner crown are stable, the metal inner crown is not easy to deform, and the strength and the yield of the metal inner crown can be improved.
S2, carrying out annealing, tempering and other heat treatments on the metal inner crown processed in the step S1, so that the mechanical property of the metal inner crown is obviously improved, the internal stress is reduced, the hardness of the metal inner crown is improved, then, deburring and deburring are carried out on the metal inner crown after the heat treatment is finished, and finally, the metal inner crown is polished by a polisher.
S3, surface treatment: the outer surface of the metal inner crown processed in the step S2 is coated with the CrAlN material to form a corrosion-resistant layer, the corrosion-resistant layer made of the CrAlN material has good corrosion resistance and plays a good role in protecting the metal inner crown inside, and the CrAlN material has ultrahigh hardness and wear resistance and can further strengthen the surface hardness of the metal inner crown. The final thickness of the metal inner crown needs to be between 0.25 mm and 0.28mm, after the surface quality of the metal inner crown is strengthened through heat treatment and a corrosion-resistant layer, the metal inner crown has stronger acid and alkali corrosion resistance and strength, so that the wall thickness of the metal inner crown can be thinner, the ceramic outer crown can be thicker, and the attractiveness and the authenticity of the ceramic outer crown are improved.
S4, preparing a ceramic raw material: the ceramic raw materials comprise ceramic powder and superfine fiber; wherein superfine fiber silk accounts for 7 ~ 9% among the ceramic raw materials, and remaining be the porcelain powder, it is inside that both can guarantee that the porcelain powder fully wraps up superfine fiber silk under this proportion, makes superfine fiber silk be difficult for receiving wearing and tearing, can make the porcelain powder form certain adhesion with superfine fiber silk simultaneously again and be connected, improves the toughness of ceramic outer crown, makes the ceramic outer crown be difficult for collapsing porcelain.
And S41, uniformly coating fire-resistant glue on the outer surface of the superfine fiber yarn, and standing for 10 minutes to fully combine the fire-resistant glue and the superfine fiber yarn.
S5, sintering the ceramic outer crown: the ceramic raw materials are uniformly mixed and then uniformly coated on the outer surface of the metal inner crown to form the ceramic outer crown, the metal inner crown and the ceramic outer crown are sintered and cured in a sintering furnace to form the ceramic tooth, wherein the ceramic raw materials are heated to 750-850 ℃, the sintering time is 2-3 minutes, and the ceramic raw materials and the metal inner crown can be bonded more firmly at the temperature.
S6, detection: firstly, the hardness of the porcelain tooth after S5 sintering is detected, and the ceramic outer crown is qualified when the hardness reaches 30-35 HRC. And then, carrying out artificial aging on the porcelain teeth which are qualified by inspection, wherein the internal stress of the porcelain teeth can be quickly reduced by the artificial aging, so that the porcelain teeth are not easy to deform or locally crack, and the mechanical property of the porcelain teeth is further improved. And after the artificial aging is finished, performing nondestructive inspection on the porcelain tooth by using an x-ray flaw detector, thereby performing nondestructive inspection on the internal and external cracks of the porcelain tooth and ensuring the product quality of the porcelain tooth.
S7, cleaning: and (5) washing the porcelain teeth qualified in detection by adopting a cleaning machine.
S8, packaging: and drying the rinsed porcelain teeth, then sterilizing the porcelain teeth through an aseptic sterilizing cabinet, and finally packaging the porcelain teeth.
The implementation principle of the preparation process of the porcelain tooth in the embodiment of the application is as follows: in the preparation process of the porcelain tooth, the corrosion-resistant layer made of CrAlN is coated on the outer side of the metal inner crown, so that the acid-base corrosion resistance treatment is carried out on the outer surface of the metal inner crown, the surface hardness is enhanced, and the protection of the metal inner crown is further improved; and the superfine fiber coated with the fire-resistant glue material is added into the ceramic raw material, and the superfine fiber has extremely strong toughness, so that the toughness of the ceramic raw material is greatly enhanced, the adhesion of ceramic powder is improved, the ceramic outer crown is not easy to break, the stability of the appearance of the ceramic is improved, and the service life of the ceramic is prolonged.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A preparation process of porcelain teeth is characterized by comprising the following steps: the method comprises the following steps:
s1, manufacturing a metal inner crown: firstly, drawing a model of the metal coping by adopting a CAM technology, and then sintering a metal raw material by adopting a sintering furnace to form the metal coping;
s2, removing the flash and burr of the metal inner crown, and then polishing;
s3, surface treatment: performing acid and alkali corrosion resistance treatment on the outer surface of the metal inner crown and strengthening the surface hardness;
s4, preparing a ceramic raw material: the ceramic raw materials comprise ceramic powder and superfine fiber;
s41, coating a refractory material on the outer surface of the superfine fiber yarn;
s42, proportioning the porcelain powder and the superfine fiber yarns according to the process proportion for subsequent sintering;
s5, sintering the ceramic outer crown: uniformly mixing ceramic raw materials, uniformly coating the ceramic raw materials on the outer surface of the metal inner crown to form a ceramic outer crown, and sintering and curing the metal inner crown and the ceramic outer crown in a sintering furnace to form a ceramic tooth;
s6, detection: carrying out internal and external quality inspection on the finished porcelain teeth;
s7, cleaning: washing the porcelain teeth which are qualified through detection;
s8, packaging: and drying and packaging the rinsed porcelain teeth.
2. The preparation process of the porcelain tooth according to claim 1, wherein: in S1, when opening the furnace to take the metal coping, natural cooling is needed, and after the metal coping is cooled to 700 ℃, opening the furnace to take the piece.
3. The preparation process of the porcelain tooth according to claim 1, wherein: in S2, before the metal coping is polished, the metal coping is subjected to annealing, tempering, and thermal refining.
4. The preparation process of the porcelain tooth according to claim 1, wherein: in S3, the outer surface of the metal coping is coated with a corrosion-resistant layer made of cran material.
5. The process for preparing a porcelain tooth according to claim 4, wherein: in S3, the metal coping has a thickness of 0.25 to 0.28 mm.
6. The preparation process of the porcelain tooth according to claim 1, wherein: in S4, the ceramic raw material composition ratio: 7-9% of superfine fiber filaments and the balance of porcelain powder.
7. The preparation process of the porcelain tooth according to claim 1, wherein: in S5, sintering and solidifying the ceramic raw material by a sintering furnace, wherein the ceramic raw material is heated to 750-850 ℃ for 2-3 minutes.
8. The process for preparing a porcelain tooth according to any one of claims 1 to 7, wherein: in S6, the hardness of the ceramic outer crown reaches 30-35 HRC, which is qualified.
9. The process for preparing a porcelain tooth according to claim 8, wherein: and in S6, artificially aging the porcelain teeth which are qualified after the inspection.
10. The process for preparing a porcelain tooth according to claim 9, wherein: in S6, the porcelain tooth is subjected to nondestructive inspection using an x-ray inspection machine.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115006029A (en) * | 2022-07-08 | 2022-09-06 | 泉州市超维医疗科技有限公司 | Preparation method of personalized customized porcelain teeth |
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| US20060063134A1 (en) * | 2004-09-20 | 2006-03-23 | Mooki Kim | Coping for dental restorations and method of forming |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115006029A (en) * | 2022-07-08 | 2022-09-06 | 泉州市超维医疗科技有限公司 | Preparation method of personalized customized porcelain teeth |
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