CN103641166A - Method for preparing dental colored zirconia powder - Google Patents
Method for preparing dental colored zirconia powder Download PDFInfo
- Publication number
- CN103641166A CN103641166A CN201310576990.9A CN201310576990A CN103641166A CN 103641166 A CN103641166 A CN 103641166A CN 201310576990 A CN201310576990 A CN 201310576990A CN 103641166 A CN103641166 A CN 103641166A
- Authority
- CN
- China
- Prior art keywords
- powder
- zirconia
- tinting material
- ball mill
- oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Dental Prosthetics (AREA)
Abstract
The invention relates to a method for preparing dental colored zirconia powder, and specifically relates to a method for preparing nanometer zirconia powder. The method comprises: putting zirconia nanometer powder 3Y-TZP with a particle size of 30-50 nm, a coloring agent and a dispersant in a bowl mill to perform long-time ball milling, adding an adhesive into the obtained product, then putting in a bowl mill to perform ball milling for preparing a slurry; and conveying the slurry to a spray drying tower to perform spray granulation processing, so as to obtain the spherical dental colored zirconia powder with an average diameter of 40-85 mu m. The colored zirconia powder prepared by employing the method has the advantages of being regular in shape, less in hard agglomeration, uniform in sintering, and the like; and a dental restoration body prepared after the colored zirconia powder is sintered has the bending strength of 710 MPa or more, has the fracture toughness of 4.8 MPa*m<1/2> or more, has the visible light transmittance of 30% or more, is uniform in coloring, and helps to enable tooth coloring to be simple and practicable.
Description
Technical field
The present invention relates to a kind of preparation method of nano zirconium oxide powder.
Background technology
The current uncoloured dental zirconia material ivory white that is white in color more, with the denture prosthesis surface that this zirconia material is made, need to hide look processes, this will make denture prosthesis lose the part transparency, and lack the sense of reality, cannot meet the clinical requirement to denture prosthesis color of dentistry.If it is close that zirconia material self color is adjusted to and intends to repair lightness, colourity, the saturation ratio of tooth, will make dummy color matching become simple, can reduce the preparation amount of abutment tooth body simultaneously.
Conventionally zirconia material is painted can two kinds of methods, and a kind of is in Zirconium powder, to add coloring oxide; Another kind method immerses presintering zirconium white in the staining fluid that contains metal oxide and permeates, then sintering.The method of penetration dyeing liquid is simple to operate, but easily produces painted inhomogeneous situation, and the impact being operated is larger.And add coloring oxide in zirconia material is produced, and can control the accurate homogeneous of color, and less on the translucency impact of material, be a kind of more satisfactory color solution.As mentioned in Chinese patent application CN1593371A " a kind of preparation method of dental prosthesis " the Tetragonal polycrystal zirconia being formed by 3mol% yttrium oxide+97mol% zirconium white (be called for short 3Y-TZP zirconium white) micro mist with ferric oxide or/and cerium oxide mixes, extrusion forming after adding additives granulation, make after biscuit of ceramics and sinter into and partially sinter ceramic block, through CAD/CAM processing, finally do the fully sintered denture prosthesis that obtains again.The dental prosthesis that the disclosed method of the document makes, physical strength is high, and flexural strength can reach 600-710MPa, and fracture toughness property 4-4.8MPam1/2 has certain light transmission, and color can regulate in advance.But through actual measurement, the visible light transmittance rate of the measure sample that the dental prosthetic body thickness that the method makes is 1mm only, for 8-10%, finally causes the translucency of denture prosthesis can not meet clinical needs.
Summary of the invention
The present invention aims to provide a kind of method of preparing dental coloring zirconia powder, and the physical strength of the dental prosthesis that the colored zirconium oxide powder of gained is made is not less than existing level, but visible light transmittance rate can obviously improve, to meet clinical needs.
Technical scheme of the present invention is: a kind of method of preparing dental coloring zirconia powder, comprises the following steps:
Step a, prepares by coprecipitation method the 3Y-TZP zirconia nano-powder that grain diameter is 30-50nm;
Step b adds after tinting material and dispersion agent in this zirconia nano-powder, puts into ball mill and carries out milled processed, uses mechanical force crumbling method to eliminate hard aggregation; Described tinting material is the mixture of ferric oxide and cerium oxide or the mixture of ferric oxide and bismuth oxide, and wherein the addition of cerium oxide is the 1-4% of this zirconia nano-powder and this tinting material total mass; The addition of ferric oxide is the 0.06-0.15% of this zirconia nano-powder and this tinting material total mass; The addition of bismuth oxide is the 0.05-0.2% of this zirconia nano-powder and this tinting material total mass.
Step c, adds adhesive polyethylene alcohol in grinding in the product obtaining, put into ball mill ball milling 2-4 hour, obtains slurry; Wherein, polyvinyl alcohol addition is the 0.5-3% of this grinding product quality;
Steps d, is transported to described slurry in spray-drying tower and carries out mist projection granulating processing, obtains distribution of SMD at the spherical dental coloring zirconia powder of 40-85 μ m.
The present inventor finds in to the research of zirconium white denture prosthesis translucency, and the key factor that affects translucency is porosity and the grain boundary structure after 3Y-TZP zirconia material dense sintering.Compare the impact of grain boundary structure on translucency, porosity is larger on scattering of light impact.Porosity is lower translucent higher.Therefore, must make 3Y-TZP zirconia material be easy to form the grain boundary structure that porosity is low after sintering.The present inventor further finds, the grain diameter of nano level 3Y-TZP zirconia powder is smaller, and particle surface energy is very big, and hard aggregation easily occurs between particle; This will cause that 3Y-TZP Zirconium powder sphericity after granulation is not high, configuration of surface is irregular, there are the textural defect such as bubble is even broken easy generation inside, is the major obstacle that the above-mentioned target of impact is reached.
The present invention prepares the method for dental coloring zirconia powder on the basis of lot of experiments, selected the 3Y-TZP zirconium white that grain diameter is 30-50nm and dental prosthesis translucency and the less tinting material of Effect on Mechanical Properties have been carried out to compound color matching, use the mechanical mill of dispersion agent and long period, the hard aggregation that not only can reduce particle can also make tinting material be uniformly distributed simultaneously; The advantages such as the spherical dental coloring zirconia powder of making after granulation has regular shape, surface is mellow and full, sphericity is high, good fluidity, processability excellent, hard aggregation is few and sintering is even.Experimental results show that, it is that 40-85 μ m is complementary within the scope of this that zirconia nano-powder is selected spherical dental colored Zirconium powder diameter after this particle size range of 30-50nm and granulation, the particle diameter of zirconia nano-powder is less than 30nm, not only produce that difficulty is large, production cost is high, and hard aggregation serious, be difficult to eliminate; The particle diameter of zirconia nano-powder is greater than 50nm, or the particle diameter of spherical dental coloring zirconia powder can not be controlled at 40-85 μ m scope, be unfavorable for that follow-up sintering keeps zirconic internal structure not to be destroyed in processing, and by zirconium white crystal grain diameter scope control in light transmission preferably below 400nm.According to this parameter matching, be easy to form cube grain boundary structure that porosity is low after sintering.Realize the goal of the invention of the present invention's " physical strength of the dental prosthesis that the colored zirconium oxide powder of gained makes is not less than existing level, but visible light transmittance rate can obviously improve, to meet clinical needs ".
In a preferred embodiment: the ball mill in described step B adopts planetary ball mill, described dispersion agent is ethanol, described zirconia nano-powder and tinting material be ball milling in the mixed solution of ethanol and water, wherein, ethanol accounts for the 10-20% of mixed solution cumulative volume, and the content ratio of this zirconia nano-powder and this tinting material is the 20-50% of this zirconia nano-powder, this tinting material and this mixed solution total mass; The zirconium oxide bead that described planetary ball mill use diameter is 0.3-3mm is as grinding medium, and the ball milling time length is 24-48 hour; Ball mill in described step c still adopts planetary ball mill, and the screen cloth elimination zirconium oxide bead that is 0.2mm with mesh after ball milling 2-4 hour obtains described slurry.
By this ball-milling technology flow process, in the slurry of gained, zirconia nano-powder and tinting material obtain sufficient spheroidization and homogenizing distribution, while being conducive to follow-up extrusion forming, biscuit of ceramics obtains maximum tap density, by improving the density of biscuit of ceramics, follow-up sintering processes can be made even dyeing, dental coloring zirconia piece that transparency is good.
The dental coloring zirconia powder of preparing according to the present invention, makes the relative density of the dental prosthesis that subsequent disposal makes reach 99.65-99.75%, visible light transmittance rate is not less than 30%, and tooth color matching becomes simple.Meanwhile, can also make the physical strength of the dental prosthesis that makes further improve, flexural strength can reach 800-900MPa, fracture toughness property 7-7.5MPam
1/2.Colored zirconium oxide powder preparation manipulation process of the present invention is simple, is easy to scale operation, is conducive to reduce the cost of dental prosthesis, benefits more odontopathy patient, meets people's pursuit that reparation becomes better and approaching perfection day by day to high standard Dental Aesthetic.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope diagram of the spherical dental coloring zirconia powder of preparation in embodiment mono-.
Fig. 2 is the scanning electron microscope diagram of spherical dental coloring zirconia powder prepared in embodiment bis-.
Fig. 3 is the scanning electron microscope diagram of spherical dental coloring zirconia powder prepared in embodiment tri-.
Fig. 4 is the scanning electron microscope diagram of spherical dental coloring zirconia powder prepared in embodiment tetra-.
Embodiment
One, embodiment mono-
By coprecipitation method, prepare the 3Y-TZP nano powder that grain diameter is 30-50nm.By this 3Y-TZP zirconia nano-powder and tinting material bismuth oxide (Bi
2o
3) and ferric oxide (Fe
2o
3) mix bismuth oxide, ferric oxide and zirconium white (ZrO in the mixed powder making
2) mass percent be bismuth oxide 0.05%, ferric oxide 0.09%: zirconium white 99.86%.By dropping in planetary ball mill together with the mixed solution of this mixed powder and dispersion agent ethanol and deionized water, carry out milled processed, use mechanical force crumbling method to eliminate hard aggregation.Wherein, ethanol accounts for 20% of mixed solution cumulative volume, and the content ratio of this mixed powder is 25% of this mixed powder and this mixed solution total mass.The zirconium oxide bead that planetary ball mill use diameter is 0.3-3mm is as grinding medium, and the ball milling time length is 24 hours.In the product obtaining in grinding, add adhesive polyethylene alcohol (PVA), the screen cloth elimination zirconium oxide bead that to put into planetary ball mill ball milling be 0.2mm with mesh after 2 hours, obtains slurry; Wherein, polyvinyl alcohol addition is 1% of this grinding product quality.This slurry is transported in spray-drying tower and carries out mist projection granulating processing, obtain distribution of SMD at the spherical dental coloring zirconia powder of 45-70 μ m.
The increase of bismuth oxide content, can produce from silvery white to pink coloring effect, and the increase of iron oxide content, can produce from Huang to red coloring effect.
Result: can obviously find out each particle hard aggregation-free in this colored zirconium oxide powder from Fig. 1.The equal globulate of each particle, edge is round and smooth, and in granule, without bubble, without broken particle, most average diameter of particles distribution ranges are 45 μ m-70 μ m.
This colored zirconium oxide powder, through 200MPa isostatic cool pressing (CIP) moulding, is put into electric furnace 1500 ℃ of sintering 2 hours, obtain the colored zirconium oxide porcelain piece sample of 30 * 4 * 3mm.
It is that milk is yellow that the naked eyes of this porcelain piece sample are seen color, to the color of this porcelain piece sample at standard white (lightness L
*=92.39, a
*=0.14, b
*=1.62) under background, measure.Adopt Japanese Minolta (Minolta) CM-2600d spectral photometric colour measuring meter, standard light source D
65; 10 ° of standard observers; Test probe is contact, and diameter is 3mm; Observation condition is d/8, eliminates specular reflection optical mode.The CIE-1976-Lab colorimeter system that color system adopts International Commission on Illumination (CIE) to recommend.The porcelain piece sample lightness L making
*with colourity a
*, b
*for: L*=76.9; A*=1.46; B*=15.2.
To this porcelain piece sample, adopt three-point bending resistance method to make bending strength test, test result: bending strength is 900MPa, and toughness is 7.3MPam
1/2.
Adopt Archimedes (Archimedes) method to measure sintered density and the relative density of this porcelain piece sample, the relative density of this porcelain piece sample is 99.75%.
This porcelain piece sample is made to the measure sample that thickness is 1mm, adopt its visible light transmittance rate of spectrophotometer measurement.During measurement, make light source, test specimen, probe point-blank, regulate hot spot to guarantee incident light vertical incidence, first recording light source light intensity (I0), then measure light through the intensity (I) of measure sample, calculate the transmittance of measure sample, T=(I/I0) * 100%.In 400～800nm visible region, every 10nm continuously measured transmittance, obtain the visible ray light transmission integrated of measure sample.Measure and get after average for 3 times, the visible light transmittance rate that obtains measure sample is 35.3%.
Two, embodiment bis-
By coprecipitation method, prepare the 3Y-TZP nano powder that grain diameter is 30-50nm.By this 3Y-TZP zirconia nano-powder and tinting material bismuth oxide (Bi
2o
3) and ferric oxide (Fe
2o
3) mix bismuth oxide, ferric oxide and zirconium white (ZrO in the mixed powder making
2) mass percent be bismuth oxide 0.05%, ferric oxide 0.05%: zirconium white 99.9%.By dropping in planetary ball mill together with the mixed solution of this mixed powder and dispersion agent ethanol and deionized water, carry out milled processed, use mechanical force crumbling method to eliminate hard aggregation.Wherein, ethanol accounts for 15% of mixed solution cumulative volume, and the content ratio of this mixed powder is 20% of this mixed powder and this mixed solution total mass.The zirconium oxide bead that planetary ball mill use diameter is 0.3-3mm is as grinding medium, and the ball milling time length is 30 hours.In the product obtaining in grinding, add adhesive polyethylene alcohol (PVA), the screen cloth elimination zirconium oxide bead that to put into planetary ball mill ball milling be 0.2mm with mesh after 3 hours, obtains slurry; Wherein, polyvinyl alcohol addition is 1.5% of this grinding product quality.This slurry is transported in spray-drying tower and carries out mist projection granulating processing, obtain distribution of SMD at the spherical dental coloring zirconia powder of 40-50 μ m.
Result: from Fig. 2, can obviously find out each particle hard aggregation-free in this colored zirconium oxide powder, particle balling preparation shape, edge is round and smooth, and in granule, without bubble, without broken particle, most average diameter of particles distribution ranges are 40 μ m-50 μ m.
CIP moulding by this colored zirconium oxide powder through 200MPa, puts into electric furnace 1500 ℃ of sintering 2 hours, obtains the colored zirconium oxide porcelain piece sample of 30 * 4 * 3mm.It is yellowish that porcelain piece sample naked eyes are seen color, uses aforesaid method and apparatus to detect, this porcelain piece sample lightness L* and colourity a*, and b* is: L*=78.8; A*=1.6; B*=10.8; The bending strength of porcelain piece sample is 860MPa, and toughness is 7.5MPam1/2.The relative density of this porcelain piece sample is 99.65%.The sample that the thickness that this porcelain piece sample is made is 1mm, recording visible light transmittance rate is 33.4%.
Three, embodiment tri-
By coprecipitation method, prepare the 3Y-TZP nano powder that grain diameter is 30-50nm.By this 3Y-TZP zirconia nano-powder and tinting material cerium oxide (Ce
2o
3) and ferric oxide (Fe
2o
3) mix cerium oxide, ferric oxide and zirconium white (ZrO in the mixed powder making
2) mass percent be cerium oxide 3%, ferric oxide 0.09%: zirconium white 96.91%.By dropping in planetary ball mill together with the mixed solution of this mixed powder and dispersion agent ethanol and deionized water, carry out milled processed, use mechanical force crumbling method to eliminate hard aggregation.Wherein, ethanol accounts for 10% of mixed solution cumulative volume, and the content ratio of this mixed powder is 30% of this mixed powder and this mixed solution total mass.The zirconium oxide bead that planetary ball mill use diameter is 0.3-3mm is as grinding medium, and the ball milling time length is 35 hours.In the product obtaining in grinding, add adhesive polyethylene alcohol (PVA), the screen cloth elimination zirconium oxide bead that to put into planetary ball mill ball milling be 0.2mm with mesh after 2 hours, obtains slurry; Wherein, polyvinyl alcohol addition is 2% of this grinding product quality.This slurry is transported in spray-drying tower and carries out mist projection granulating processing, obtain distribution of SMD at the spherical dental coloring zirconia powder of 48-80 μ m.
The increase of cerium oxide content, can produce the coloring effect from yellowish to orange, and the increase of iron oxide content can produce from Huang to red coloring effect.
Result: from Fig. 3, can obviously find out each particle hard aggregation-free in this colored zirconium oxide powder, particle balling preparation shape, edge is round and smooth, and in granule, without bubble, without broken particle, most average diameter of particles distribution ranges are 48 μ m-80 μ m.
CIP moulding by this colored zirconium oxide powder through 200MPa, puts into electric furnace 1500 ℃ of sintering 2 hours, obtains the colored zirconium oxide porcelain piece sample of 30 * 4 * 3mm.It is yellow that this porcelain piece sample naked eyes are seen color, uses measuring method and equipment described in embodiment 1, records this porcelain piece sample lightness L* and colourity a*, and b* is: L*=70.6; A*=4.5; B*=24.5; This porcelain piece sample bending strength is 800MPa, and toughness is 7.0MPam1/2.Relative density is 99.68%.The visible light transmittance rate of the sample that the thickness that this porcelain piece sample is made is 1mm is 33.1%.
Four, embodiment tetra-
By coprecipitation method, prepare the 3Y-TZP zirconia nano-powder that grain diameter is 30-50nm.By this 3Y-TZP zirconia nano-powder and tinting material cerium oxide (Ce
2o
3) and ferric oxide (Fe
2o
3) mix cerium oxide, ferric oxide and zirconium white (ZrO in the mixed powder making
2) mass percent be cerium oxide 4%, ferric oxide 0.12%: zirconium white 95.88%.By dropping in planetary ball mill together with the mixed solution of this mixed powder and dispersion agent ethanol and deionized water, carry out milled processed, use mechanical force crumbling method to eliminate hard aggregation.Wherein, ethanol accounts for 12% of mixed solution cumulative volume, and the content ratio of this mixed powder is 50% of this mixed powder and this mixed solution total mass.The zirconium oxide bead that planetary ball mill use diameter is 0.3-3mm is as grinding medium, and the ball milling time length is 48 hours.In the product obtaining in grinding, add adhesive polyethylene alcohol (PVA), the screen cloth elimination zirconium oxide bead that to put into planetary ball mill ball milling be 0.2mm with mesh after 4 hours, obtains slurry; Wherein, polyvinyl alcohol addition is 0.5% of this grinding product quality.This slurry is transported in spray-drying tower and carries out mist projection granulating processing, obtain distribution of SMD at the spherical dental coloring zirconia powder of 50-85 μ m.
Result: from Fig. 4, can obviously find out each particle hard aggregation-free in this colored zirconium oxide powder, particle balling preparation shape, edge is round and smooth, and in granule, without bubble, without broken particle, average diameter of particles distribution range is 50 μ m-85 μ m.
CIP moulding by this spherical dental colored Zirconium powder through 200MPa, puts into electric furnace 1500 ℃ of sintering 2 hours, obtains the colored zirconium oxide porcelain piece sample of 30 * 4 * 3mm.It is yellow that this porcelain piece sample naked eyes are seen color, uses measuring method and equipment described in embodiment 1, records this porcelain piece sample lightness L* and colourity a*, and b* is: L*=72.8; A*=4.0; B*=22.3; This porcelain piece sample bending strength is 810MPa, and toughness is 7.2MPam1/2.Relative density is 99.65%.The visible light transmittance rate of the sample that the thickness that this porcelain piece sample is made is 1mm is 31.1%.
The above, be only preferred embodiment of the present invention, with this, do not limit scope of the invention process, and the equivalence of doing according to technical scheme of the present invention and description changes and modifies, and all should belong to the scope that the present invention is contained.
Claims (2)
1. a method of preparing dental coloring zirconia powder, comprises the following steps:
Step a, prepares by coprecipitation method the 3Y-TZP zirconia nano-powder that grain diameter is 30-50nm;
Step b adds after tinting material and dispersion agent in this zirconia nano-powder, puts into ball mill and carries out milled processed, uses mechanical force crumbling method to eliminate hard aggregation; Described tinting material is the mixture of ferric oxide and cerium oxide or the mixture of ferric oxide and bismuth oxide, and wherein the addition of cerium oxide is the 1-4% of this zirconia nano-powder and this tinting material total mass; The addition of ferric oxide is the 0.06-0.15% of this zirconia nano-powder and this tinting material total mass; The addition of bismuth oxide is the 0.05-0.2% of this zirconia nano-powder and this tinting material total mass.
Step c, adds adhesive polyethylene alcohol in grinding in the product obtaining, put into ball mill ball milling 2-4 hour, obtains slurry; Wherein, polyvinyl alcohol addition is the 0.5-3% of this grinding product quality;
Steps d, is transported to described slurry in spray-drying tower and carries out mist projection granulating processing, obtains distribution of SMD at the spherical dental coloring zirconia powder of 40-85 μ m.
2. a kind of method of preparing dental coloring zirconia powder according to claim 1, it is characterized in that: the ball mill in described step B adopts planetary ball mill, described dispersion agent is ethanol, described zirconia nano-powder and tinting material be ball milling in the mixed solution of ethanol and deionized water, wherein, ethanol accounts for the 10-20% of mixed solution cumulative volume, and the content ratio of this zirconia nano-powder and this tinting material is the 20-50% of this zirconia nano-powder, this tinting material and this mixed solution total mass; The zirconium oxide bead that described planetary ball mill use diameter is 0.3-3mm is as grinding medium, and the ball milling time length is 24-48 hour; Ball mill in described step c still adopts planetary ball mill, and the screen cloth elimination zirconium oxide bead that is 0.2mm with mesh after ball milling 2-4 hour obtains described slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576990.9A CN103641166B (en) | 2013-11-14 | 2013-11-14 | Method for preparing dental colored zirconia powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576990.9A CN103641166B (en) | 2013-11-14 | 2013-11-14 | Method for preparing dental colored zirconia powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103641166A true CN103641166A (en) | 2014-03-19 |
| CN103641166B CN103641166B (en) | 2015-06-17 |
Family
ID=50246503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310576990.9A Active CN103641166B (en) | 2013-11-14 | 2013-11-14 | Method for preparing dental colored zirconia powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103641166B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445393A (en) * | 2014-11-10 | 2015-03-25 | 湖北亿佳欧电子有限公司 | Organic network preparation method of ferrozirconium red zirconia nano-composite ceramic powder |
| CN106009918A (en) * | 2016-06-07 | 2016-10-12 | 陈剑锋 | Zirconia powder for ceramic ink-jet printing and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1943538A (en) * | 2006-11-02 | 2007-04-11 | 北京宁宇博美生物技术有限公司 | Novel dental zirconium oxide prosthesis and its preparing process |
| US20100233579A1 (en) * | 2006-08-17 | 2010-09-16 | H.C. Starck Gmbh | Zirconium oxide and method for the production thereof |
-
2013
- 2013-11-14 CN CN201310576990.9A patent/CN103641166B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100233579A1 (en) * | 2006-08-17 | 2010-09-16 | H.C. Starck Gmbh | Zirconium oxide and method for the production thereof |
| CN1943538A (en) * | 2006-11-02 | 2007-04-11 | 北京宁宇博美生物技术有限公司 | Novel dental zirconium oxide prosthesis and its preparing process |
Non-Patent Citations (1)
| Title |
|---|
| 陈剑锋等: "两种着色氧化物对氧化锆陶瓷的颜色影响", 《口腔颌面修复学杂志》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445393A (en) * | 2014-11-10 | 2015-03-25 | 湖北亿佳欧电子有限公司 | Organic network preparation method of ferrozirconium red zirconia nano-composite ceramic powder |
| CN106009918A (en) * | 2016-06-07 | 2016-10-12 | 陈剑锋 | Zirconia powder for ceramic ink-jet printing and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103641166B (en) | 2015-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103641472B (en) | Method for preparing coloring semipermeable zirconia presintered body | |
| CN100484508C (en) | Novel dental zirconium oxide prosthesis and its preparing process | |
| CN105338948B (en) | Nanocrystal zirconium oxide and its processing method | |
| US9776926B2 (en) | Zirconia sintered body, and zirconia composition and calcined body | |
| DK2359771T3 (en) | A process for the preparation of colored blanks and dental form pieces. | |
| CN103382112A (en) | Preparation method of dark-blue zirconia ceramic | |
| KR20190047701A (en) | Zirconia compositions, plasticizers and sintered bodies, and methods of making them | |
| WO2010110156A1 (en) | Fluorescent zirconia material | |
| WO2018056331A1 (en) | Zirconia composition, partially sintered material and sintered material and methods for production thereof, and laminate | |
| CN103304268B (en) | All-porcelain tooth staining fluid with color indication function and preparation method thereof | |
| CN108033789A (en) | A kind of black zirconia ceramics material compositions and its application | |
| CN103641166B (en) | Method for preparing dental colored zirconia powder | |
| CN103936416A (en) | Yttria-stabilized zirconia ceramic for dental repair and preparation method thereof | |
| CN105565807A (en) | Zirconia ceramic slurry for manufacturing false tooth as well as preparation method and application thereof | |
| Wen et al. | The color of Fe2O3 and Bi2O3 pigmented dental zirconia ceramic | |
| Alves et al. | Mechanical properties and translucency of a multi-layered zirconia with color gradient for dental applications | |
| CN104529439B (en) | The high fluorescent type zirconia ceramics and preparation method thereof thoroughly of a kind of dental | |
| CN108726998A (en) | A kind of preparation method of Zirconia reinforced alumina dentistry osmotic ceramic | |
| Wang et al. | Effect of Fe2O3 doping on color and mechanical properties of dental 3Y-TZP ceramics fabricated by stereolithography-based additive manufacturing | |
| JP6920573B1 (en) | Zirconia composition, zirconia calcined body and zirconia sintered body, and method for producing them. | |
| JP2023016927A (en) | Purple zirconia sintered body and manufacturing method thereof | |
| Cho et al. | Effect of phase fraction and grain size on translucency of 3 mol% yttria-stabilized tetragonal zirconia polycrystal | |
| Chen et al. | Effect of coloration with various metal oxides on zirconia | |
| Li et al. | Three-dimensional printing of blue-colored zirconia accessories using digital light processing-based stereolithography | |
| EP3904315A1 (en) | Solution for coloring zirconia |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |