CN101926735A - Fully ceramic dental prosthetic material and method for preparing same - Google Patents

Fully ceramic dental prosthetic material and method for preparing same Download PDF

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CN101926735A
CN101926735A CN 201010220480 CN201010220480A CN101926735A CN 101926735 A CN101926735 A CN 101926735A CN 201010220480 CN201010220480 CN 201010220480 CN 201010220480 A CN201010220480 A CN 201010220480A CN 101926735 A CN101926735 A CN 101926735A
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devitrified glass
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dental prosthetic
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CN101926735B (en
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廖运茂
李伟
张静超
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Sichuan University
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Sichuan University
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Abstract

The invention provides a fully ceramic dental prosthetic material, which is a dental prosthetic material prepared from micron-scale and submicron-scale Al2O3, nano-scale Al2O3, nano-scale ZrO2 and biological glass-ceramic serving as raw materials. The invention also provides a method for preparing the fully ceramic dental prosthetic material. In the aluminum oxide/zirconium oxide/glass-ceramic composite material prepared by the invention, the used glass-ceramic serves as a reinforcement phase in the composite structure; the mechanical property of the compound can be greatly improved, the bending strength reaches 601.30 to 657.2MPa and the fracture toughness reaches 6.19 to 6.22MPa.ml/2, and the requirement of anterior and posterior dental crown and bridge restoration bodies can be met well; and the fully ceramic dental prosthetic material has high strength and toughness, can produce the optical effect similar to dentin, can be generally used for multi-unit bridges of anterior teeth and posterior teeth and has more attractive and realer color.

Description

A kind of fully ceramic dental prosthetic material and preparation method thereof
Technical field
Patent of the present invention relates to a kind of fully ceramic dental prosthetic material.Belong to the inorganic composite materials preparation field.
Background technology
Ceramic material is owing to its good biocompatibility, and structure and color and luster texture are similar to people's tooth, therefore is described as main tooth body defect of dentition repair materials of 21 century.Although existing at present castable ceramic, glass infiltration aluminium oxide ceramics, dense multicrystalline aluminium oxide ceramics and zirconia ceramics product emerge, and in clinical acquisition use, but still have the following disadvantages: 1) castable ceramic, alumina base glass infiltration composite ceramics mainly are suitable for labial teeth, with backteeth crown bridge prosthesis requirement of strength (600-900Mpa) big gap are arranged still; 2) the zirconia ceramics mechanical property is good, but optical property is not good enough, still there are differences with dermal tooth.The strength ratio macroscopic view glass of crystalline glass fibre or devitrified glass thin film improves 2-3 the order of magnitude, and the research that utilizes nano microcrystalline to produce the optical effect of class tooth body still belongs to new exploration.
200410018238.3 denomination of invention: dentistry all-ceramic crown bridge dummy bottom matrix and preparation method, this invention relate to dentistry all-ceramic crown bridge dummy bottom matrix and preparation method.Matrix is that skeleton is made by Alpha-alumina and/or zirconium oxide, and matrix powder particle volume percent profile is that 4～5 μ m account for 45-50%, and 1-2 μ m accounts for 30-35%, and nano-powder accounts for 10～18%.The adding of nano aluminium oxide, zirconium oxide micropowder both can have been synthesized the back remix separately and added, and also can adopt support cladding method to carry out, and this invention emphasizes that infiltration is amorphous glassy phase mutually.Reasonably prescription and processing technology are adopted in this invention, provide that a kind of high temperature sintering deflection is little, bending strength is big, the novel all-ceramic crown bridge dummy bottom matrix that matrix is little with respect to original base substrate shrinkage factor, its infiltration is devitrified glass mutually, thereby can improve intensity by a relatively large margin.Summer is proud etc., the development of dental Y-TZP/ mica glass ceramic composite, " Chinese pottery ", 2005 41 5 phases of volume are with K 2O-MgO-Al 2O 3-SiO 2The devitrified glass of-F system is the basis, carries out compoundly with not commensurability Y-TZP powder body, has prepared the novel full ceramic material that is used for dental prosthetic.By means of DTA, XRD, SEM etc. study the principal crystalline phase kind and the microstructure of this material, and have tested the physicochemical properties such as rupture strength, bulk density, Vickers hardness, thermal coefficient of expansion and acidproof (alkali) property of composite.Summer is proud etc., the development of dental zirconium oxide/aluminium oxide/glass composite material, " ceramic science and art ", 2005 39 5 phases of volume, adopt the fusion infiltration method to prepare dental alumina base glass composite material, for intensity and the toughness that improves material, in alumina preform, add a certain amount of zirconium oxide.By SEM and XRD the microstructure and the crystalline phase composition of material are studied, its result of study shows: the introducing amount of 4Y-TZP is 15wt%, and the rupture strength of composite can reach 182Mpa.Form because its processing technology system employing directly adds the glass glass to fire in the matrix mutually, glassy phase becomes impurity and is present in mutually in the composite construction, selects 4Y-TZP simultaneously for use, and mechanical property is relatively poor, can not satisfy the requirement of dental prosthetic material; And the performance of different devitrified glasses is different, has determined the character of the composite that finally obtains.
Summary of the invention
Technical scheme of the present invention has provided a kind of fully ceramic dental prosthetic material.Another technical scheme of the present invention has provided the preparation method of fully ceramic dental prosthetic material.
The present invention also provides a kind of fully ceramic dental prosthetic material, and it is the Al by micron, submicron 2O 3And nanoscale Al 2O 3, nanoscale ZrO 2, bio-microcrystal glass is the dental prosthetic material of feedstock production, the Al of micron, submicron wherein 2O 3, nanoscale Al 2O 3, nanoscale ZrO 2, the nano biological devitrified glass weight percentage be: the micron, submicron Al 2O 330%～55%, nanoscale Al 2O 35%～10%, nanoscale ZrO 210%～40%, nano biological devitrified glass 28%～45%.
Wherein, described nanoscale Al 2O 3, nanoscale ZrO 2Particle size range be 30～100nm.
Wherein, it is with Al 2O 3And ZrO 2Granule is by the raw material of multistage grating as matrices of composite material, the wherein Al of various particle diameters 2O 3And ZrO 2Percentage by weight is followed successively by: micron grain size d wherein 50, 2.5 μ m～3.2 μ m account for total Al 2O 3And ZrO 2The 50%-60% of amount; The Al of submicron 2O 3Particle diameter d 500.2 μ m～0.9 μ m accounts for total Al 2O 3And ZrO 2The 10%-20% of amount; Nanoscale Al 2O 3, nanoscale ZrO 2d 5090nm accounts for total Al 2O 3And ZrO 2The 22%-40% of amount; d 50The 30nm particle diameter accounts for total Al 2O 3And ZrO 210% of amount, these powder body will be by the mechanical means mix homogeneously, and dispersant adds deionized water and is made into blending liquid, progressively adds powder body and makes slip, needs in the harmonic process constantly to stir and supersonic vibration, makes the slip uniform distribution.Base substrate forms base substrate after the slip casting, and through 1200 ℃ of-1300 ℃ of high temperature presintering, forming the nano-scale that communicates with each other is main skeletal matrix, and bio-microcrystal glass forms the composite construction that nano level microcrystalline film is strengthened with liquid infiltration among hole.The consumption proportion of dispersant is: Polyethylene Glycol: sodium citrate: polyacrylamide=1: 2: 4.
The weight percentage of described bio-microcrystal glass is the 39.5%-41% of skeleton matrix weight.
Wherein, adopt La in the described nano biological devitrified glass 2O 3-CeO 2-Al 2O 3-CaO-SiO 2-B 2O 3-TiO 2-Fe 2O 3System, wherein the weight percentage of each component is: La 2O 3And CeO 2Sum is 22%-31%, SiO 2And B 2O 3Sum is 45%-55%, Al 2O 3Be 8%-13%, CaO is 6%-11%, TiO 2Be 2%-5%, Fe 2O 3Be 0.2%-0.9%, flux kept the zirconium crucible fusion less than 3% 1 hour at 1450 ℃-1480 ℃.
Further preferably, the weight percentage of each component is in the described nano biological devitrified glass: La 2O 3And CeO 2Sum is 27.8%, SiO 2And B 2O 3Sum is 47.5%, Al 2O 3Be 9.5%, CaO is 8%, TiO 2Be 4.5%, Fe 2O 3Be 0.6%, flux 2.1%.
Described flux is a kind of in fluoride, arsenide, ceria, ammonium salt, borate or the sulfate, also can adopt other flux commonly used in the preparation glass technology.
The present invention also provides a kind of method for preparing described fully ceramic dental prosthetic material, comprises the steps:
1. nano alumina powder jointed preparation: with Al (NO 3) 3Be presoma, be mixed with solution,, handle alcohol washing, lyophilization, sintering through hydro-thermal method with NH3 aqueous solution control pH ≈ 9;
2. nano zirconium oxide powder preparation: with ZrOCl 2.8H 2O is a presoma, adds 6%-8%MolY (NO 3) 3, be mixed with the mixed solution of molar concentration scope 0.8mol～1.2mol/L, with NH 3Aqueous solution is made precipitant, and control pH ≈ 9 makes zirconium, yttrium colloid handle through hydro-thermal method, the alcohol washing, and lyophilization, sintering obtains the 3Y-TZP nano zirconium oxide powder;
3. micropore matrix preparation: select for use micron, submicron and nanometer grade powder to carry out grating according to closelypacked principle, adding Polyethylene Glycol, sodium citrate, polyacrylamide are dispersant, the consumption of dispersant accounts for the 0.5%-1.2% of powder body total amount, be prepared into slip, powder content is not less than 85% in the slip, presses hat at the bottom of the application target plastic-coated, through 1200 ℃～1250 ℃ pre-burnings, promptly be made into the matrix that contains a large amount of micropores, its volumetric porosity is 25%-33%; Wherein, the micron, submicron alumina can be by commercially available purchase;
4. the assembling of nanophase: bio-microcrystal glass under 1180 ℃ of-1230 ℃ of temperature infiltrates the micropore that communicates with each other in the liquid phase mode among, form nano level microcrystalline film, strengthen composite construction;
5. forming method: be coated with molding technology by the powder slurry, on special-purpose die, realize the deposition of slip.
Wherein, step 3. the consumption proportion of described dispersant be: Polyethylene Glycol: sodium citrate: polyacrylamide=1: 2: 4.
Dental prosthetic material of the present invention is with micron, submicron, nano level α-Al 2O 3, ZrO 2Solid particle is carried out multistage grating, and constituting the successive nanometer micropore that communicates with each other is main skeleton, and bio-vitric is formed nano level microcrystalline film with liquid infiltration among hole, guarantees that complex forms the nano composite structure of uniformity.Alumina-zirconia/the glass ceramic composite of preparation, the devitrified glass that is adopted becomes wild phase in composite construction, and the mechanical property of complex is greatly improved.
The present invention is with micron, submicron, nano level α-Al 2O 3, ZrO 2Microgranule is a rigid backbone, and forming the successive nano aperture that communicates with each other by grating is main hole.These micropores constitute the nano-form that adds phase, and bio-microcrystal glass forms nano level devitrified glass book film with liquid infiltration among hole, and matrix and microcrystalline film are locked the nano composite structure that knot obtains uniformity mutually.The devitrified glass thin film except by nano effect the porous body is strengthened and the effect of malleableize, reduction matrix sintering temperature, the optical property improving the combination interface of solid phase and liquid phase and improve dummy are all produced facilitation.
With 200410018238.3, denomination of invention: dentistry all-ceramic crown bridge dummy bottom matrix and the different place of preparation method are: added the devitrified glass osmosis process.The present invention is to forming nano microcrystalline film in the nanoaperture that is interconnected by the devitrified glass infiltration in alumina-zirconia porous body.Regulate by thermal coefficient of expansion, make it on combination interface, the alumina-zirconia porous matrix to be had good wettability devitrified glass.By the nano crystalline glass thin film alumina-zirconia porous matrix is produced enhancing and mend tough effect.Summer is proud, Deng, the development of dental Y-TZP/ mica glass ceramic composite, though the glassy phase that adds has improved the optical property that meets composite ceramics, but cause its mechanical property relatively poor, can not satisfy the requirement of all-ceramic crown bridge dummy, be i.e. labial teeth 300MPa, backteeth 500-600Mpa, rupture strength only reach 182Mpa.The present invention distinguishes difference with it and is: at first form the porous matrix with the nanoaperture that is interconnected by the aluminium oxide of different-grain diameter and the grating of Zirconium powder, devitrified glass infiltration then, by the hole in the filling porous matrix of capillarity, form nano level devitrified glass thin film.Nano level devitrified glass thin film is by the nano reinforcement effect, matrix is played enhancing mend tough effect, therefore, the alumina-zirconia that obtains/devitrified glass complex is compared with common glass infiltration aluminium oxide/zirconia composite ceramics, and light transmission and mechanical property improve greatly; Simultaneously, the cubic phase nano zirconium oxide that the present invention selects for use can guarantee that it keeps the four directions to room temperature in composite construction, thereby generation transformation toughening and micro-crack is toughness reinforcing.
Alumina-zirconia/glass ceramic composite method of the present invention's preparation adopts devitrified glass, becomes wild phase in composite construction, and mechanical property is greatly improved (bending strength 600MPa), preferably the requirement of front and back corona bridge dummy.The alumina-zirconia that the present invention makes/devitrified glass complex bending strength reaches bending strength and reaches 601.30-657.2MPa, and fracture toughness reaches 6.19-6.22Mpa.m 1/2, full ceramic restoration material of the present invention not only has high strength and high tenacity, and can form the dentinoid optical effect of class, can generally be used for many units pontic of labial teeth and backteeth, and color is attractive in appearance more true to nature simultaneously.
Description of drawings
Fig. 1 dental case die
Corona behind Fig. 2 slip plastic-coated
Fig. 3 slip plastic-coated crown bridge prosthesis
Fig. 4 glass infiltration post-prosthesis
Fig. 5 nano microcrystalline crown bridge prosthesis figure
Fig. 6 clinical repair effect
Fig. 7 nano biological devitrified glass infiltration crown bridge prosthesis XRD figure spectrum (★ α-Al 2O 3, ◆ t-ZrO 2, ▲ m-ZrO 2, ● ZrSiO,
Figure BSA00000177150900041
LaAl 2.O 3(B 4O 10) 0.54)
The specific embodiment
Embodiment one: the preparation of fully ceramic dental prosthetic material of the present invention
With Al (NO 3) 3Be presoma, be mixed with the solution of 1mol concentration, with NH 3Aqueous solution control pH is 9, handles through hydro-thermal method, and the alcohol washing, lyophilization, sintering is prepared into nano alumina powder jointed.With ZrOCl 2.8H 2O is a presoma, adds 7.8%MolY (NO 3) 3, be mixed with the mixed solution of 0.8mol concentration, make precipitant with the NH3 aqueous solution, control pH 9.2 makes zirconium, yttrium colloid handle through hydro-thermal method, the alcohol washing, lyophilization, sintering obtains partially stabilized nano zirconium oxide powder.Selecting particle diameter for use is the alumina powder of micron and aluminium oxide, the zirconium oxide micropowder of sodium meter level, carries out grating according to closelypacked principle.Wherein, the aluminium oxide mean diameter is that 2.8 μ m account for 51.5%, 0.1 μ m and account for 11.8%, and tetragonal zircite 25nm-40nm person accounts for 29.3%.Selecting Polyethylene Glycol, sodium citrate, polyacrylamide for use is dispersant, accounts for 0.7% of powder body gross weight in 1: 2: 4 ratio total amount, the preparation dispersant.Utilize its steric effect to improve slip uniformity, dispersibility and suspension.After the slip preparation,,, be made into porosity and be 28% porous matrix through 1200 ℃ of pre-burnings promptly according to hat at the bottom of the application target plastic-coated.Select the bio-vitric system for use, screening glass formation range, the platinum crucible fusion, infiltration glass should possess following properties: (a) lower high temperature viscosity, good penetration performance; (b) lower fusing point; (c) with matrix good wettability is arranged; (d) better chemical stability can not produce tangible chemical reaction with matrix under the infiltration temperature; (e) thermal coefficient of expansion of glass should be lower than the thermal coefficient of expansion of matrix slightly, so that when cooling introduced favourable microcosmic compressive stress in glassy phase; (f) with the refractive index of matrix material coupling, make composite construction become translucence; (g) color space should satisfy the requirement of bottom hat to tone, saturation, brightness, and is the logic distribution in compatriots' color space.According to mentioned above principle, through screening, La 2O 3-CeO 2-Al 2O 3-CaO-SiO 2-B 2O 3-TiO 2-Fe 2O 3System, wherein the weight percentage of each component is: La 2O 3And CeO 2Sum is 27.8%, SiO 2And B 2O 3Sum is 47.5%, Al 2O 3Be 9.5%, CaO is 8%, and TiO2 is 4.5%, Fe 2O 3Be 0.6%, flux is 2.1%.1460 ℃ kept the zirconium crucible fusion 1 hour.Bio-microcrystal glass under 1200 ℃ of temperature infiltrated the micropore that communicates with each other in the liquid phase mode among, wherein the weight percentage of bio-microcrystal glass was 41% of a matrix.
The capillary attraction of matrix micropore plays an important role in this course, and finally the mode with nano biological devitrified glass film produces the reinforcement toughening effect to matrix.Bending strength reaches 601.30MPa, and fracture toughness reaches 6.19Mpa.m 1/2
Embodiment two: the preparation of fully ceramic dental prosthetic material of the present invention
Method with embodiment one prepares aluminium oxide and Zirconium powder, add part and be nano aluminium oxide, the nano zirconium oxide powder that disperse distributes, it constitutes rigid backbone jointly with micron, submicron particle, wherein, the aluminium oxide mean diameter is that 2.8 μ m account for 50.1%, 0.1 μ m accounts for 13.5%, nanoscale Al 2O 37%, nano zircite accounts for 29.4%.The consumption proportion of dispersant is: Polyethylene Glycol: sodium citrate: polyacrylamide=1: 2: 4.After the slip preparation, according to hat at the bottom of the application target plastic-coated, form the micropore matrix 1220 ℃ of presintering after the molding, thereafter bio-microcrystal glass under 1220 ℃ of temperature infiltrates the micropore that communicates with each other in the liquid phase mode among, form nano level microcrystalline film, strengthen composite construction.Wherein the weight percentage of bio-microcrystal glass is 38% of a matrix.Bending strength reaches 657.2MPa, and fracture toughness reaches 6.22Mpa.m 1/2
Embodiment three: the preparation of fully ceramic dental prosthetic material of the present invention
Method with embodiment one prepares aluminium oxide and Zirconium powder, add part and be nano aluminium oxide, the nano zirconium oxide powder that disperse distributes, it constitutes rigid backbone jointly with micron, submicron particle, wherein, the aluminium oxide mean diameter is that 2.8 μ m account for 51.7%, 0.1 μ m accounts for 10%, nanoscale Al 2O 313.3%, nano zircite accounts for 25%.The consumption proportion of dispersant is: Polyethylene Glycol: sodium citrate: polyacrylamide=1: 2: 4.After the slip preparation, according to hat at the bottom of the application target plastic-coated, form the micropore matrix 1200 ℃ of presintering after the molding, thereafter bio-microcrystal glass under 1220 ℃ of temperature infiltrates the micropore that communicates with each other in the liquid phase mode among, form nano level microcrystalline film, strengthen composite construction.Wherein the weight percentage of bio-microcrystal glass is 39.5% of a matrix.Bending strength reaches 630MPa, and fracture toughness reaches 6.2Mpa.m 1/2
Fig. 1 to Fig. 6 is the main manufacturing process of fully ceramic dental prosthetic material alumina-zirconia/devitrified glass complex.Fig. 7 is the XRD figure spectrum of the fully ceramic dental prosthetic material alumina-zirconia/devitrified glass complex of the present invention's preparation.The bending strength of fully ceramic dental prosthetic material of the present invention reaches bending strength and reaches 601.30-657.2MPa, and fracture toughness reaches 6.19-6.22Mpa.m 1/2, be a kind of tooth dental repair material of tool premium properties.

Claims (8)

1. fully ceramic dental prosthetic material, it is characterized in that: it is the Al by micron, submicron 2O 3And nanoscale Al 2O 3, nanoscale ZrO 2, bio-microcrystal glass is the dental prosthetic material of feedstock production, the Al of micron, submicron wherein 2O 3, nanoscale Al 2O 3, nanoscale ZrO 2, the nano biological devitrified glass weight percentage be: the micron, submicron Al 2O 330%～55%, nanoscale Al 2O 35%～10%, nanoscale ZrO 210%～40%, nano biological devitrified glass 28%～45%.
2. fully ceramic dental prosthetic material according to claim 1 is characterized in that: described nanoscale Al 2O 3, nanoscale ZrO 2Particle size range be 30～100nm.
3. fully ceramic dental prosthetic material according to claim 1 and 2 is characterized in that: it is with Al 2O 3And ZrO 2Granule is by the raw material of multistage grating as matrices of composite material, the wherein Al of various particle diameters 2O 3And ZrO 2Percentage by weight is followed successively by: micron grain size d wherein 50, 2.5 μ m～3.2 μ m account for total Al 2O 3And ZrO 2The 50%-60% of amount; The Al of submicron 2O 3Particle diameter d 500.2 μ m～0.9 μ m accounts for total Al 2O 3And ZrO 2The 10%-20% of amount; Nanoscale Al 2O 3, nanoscale ZrO 2d 5090nm accounts for total Al 2O 3And ZrO 2The 22%-40% of amount; d 50The 30nm particle diameter accounts for total Al 2O 3And ZrO 210% of amount, these powder body will be by the mechanical means mix homogeneously, add dispersant in the deionized water and form blending liquid making slip, form base substrate after the slip casting, through 1200 ℃ of-1300 ℃ of high temperature presintering, the nano-scale that formation communicates with each other is main skeleton matrix, and bio-microcrystal glass forms the composite construction that nano level microcrystalline film is strengthened with liquid infiltration among hole.
4. fully ceramic dental prosthetic material according to claim 3 is characterized in that: the weight percentage of described bio-microcrystal glass is the 39.5%-41% of skeleton matrix weight.
5. fully ceramic dental prosthetic material according to claim 1 is characterized in that: adopt La in the described nano biological devitrified glass 2O 3-CeO 2-Al 2O 3-CaO-SiO 2-B 2O 3-TiO 2-Fe 2O 3System, wherein the weight percentage of each component is: La 2O 3And CeO 2Sum accounts for the 22%-31% of devitrified glass total amount, SiO 2And B 2O 3Sum accounts for the 45%-55% of devitrified glass total amount, Al 2O 3Account for the 8%-13% of devitrified glass total amount, CaO accounts for the 6%-11% of devitrified glass total amount, TiO 2Account for the 2%-5% of devitrified glass total amount, Fe 2O 3Account for the 0.2%-0.9% of devitrified glass total amount, flux accounts for the devitrified glass total amount less than 3%, keeps the zirconium crucible fusion 1 hour at 1450 ℃-1480 ℃.
6. fully ceramic dental prosthetic material according to claim 5 is characterized in that: the heavy percentage composition of each component is: La 2O 3And CeO 2Sum accounts for 27.8% of devitrified glass total amount, SiO 2And B 2O 3Sum accounts for 47.5% of devitrified glass total amount, Al 2O 3Account for 9.5% of devitrified glass total amount, CaO accounts for 8% of devitrified glass total amount, TiO 2Account for 4.5% of devitrified glass total amount, Fe 2O 3Account for 0.6% of devitrified glass total amount, flux accounts for 2.1% of devitrified glass total amount.
7. a method for preparing any described fully ceramic dental prosthetic material of claim 1-6 is characterized in that: comprise the steps:
1. nano alumina powder jointed preparation: with Al (NO 3) 3Be presoma, be mixed with solution, with NH 3Aqueous solution control pH ≈ 9 handles alcohol washing, lyophilization, sintering through hydro-thermal method;
2. nano zirconium oxide powder preparation: with ZrOCl 2.8H 2O is a presoma, adds 6%-8%MolY (NO 3) 3, be mixed with the mixed solution of molar concentration scope 0.8mol～1.2mol/L, with NH 3Aqueous solution is made precipitant, and control pH ≈ 9 makes zirconium, yttrium colloid handle through hydro-thermal method, the alcohol washing, and lyophilization, sintering obtains the stabilized nano Zirconium powder;
3. micropore matrix preparation: select for use micron, submicron and nanometer grade powder to carry out grating according to closelypacked principle, adding Polyethylene Glycol, sodium citrate, polyacrylamide are dispersant, the consumption of dispersant accounts for the 0.5%-1.2% of powder body total amount, is prepared into slip; Be preced with at the bottom of pressing the application target plastic-coated,, promptly be made into the matrix that contains a large amount of micropores through 1200 ℃～1250 ℃ pre-burnings;
4. the assembling of nanophase: bio-microcrystal glass under 1180 ℃ of-1230 ℃ of temperature infiltrates the micropore that communicates with each other in the liquid phase mode among;
5. molding: be coated with molding technology by the powder slurry, on special-purpose die, realize the deposition of slip.
8. preparation method according to claim 7 is characterized in that: the step 3. consumption proportion of described dispersant is: Polyethylene Glycol: sodium citrate: polyacrylamide=1: 2: 4.
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CN102512256A (en) * 2011-12-26 2012-06-27 辽宁爱尔创生物材料有限公司 Method for dyeing all-zirconium tooth by using film
CN105287231A (en) * 2015-11-13 2016-02-03 徐炜 All-ceramic dental restoration material and preparation method thereof
CN105924157A (en) * 2016-04-29 2016-09-07 成都贝施美生物科技有限公司 Preparation method for zirconia ceramic material powder used for preparation of false tooth
CN105924161A (en) * 2016-04-29 2016-09-07 成都贝施美生物科技有限公司 Zirconia ceramic material powder used for preparation of false tooth
CN107117962A (en) * 2017-05-04 2017-09-01 郑州汉东科技有限公司 A kind of preparation method of the dental all-ceramics repair materials based on electrostatic self-assembled technology
CN110981203A (en) * 2019-11-26 2020-04-10 中国科学院上海硅酸盐研究所 High-strength lithium disilicate glass ceramic and preparation method and application thereof
CN111533541A (en) * 2019-06-12 2020-08-14 南京赛诺特斯材料科技有限公司 Oral cavity repairing material based on nano zirconia and alumina composite ceramic
CN112341195A (en) * 2020-10-27 2021-02-09 珠海新茂义齿科技有限公司 Sintering method of colored zirconia false tooth

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《玻璃与搪瓷》 20040831 和峰等 "骨修复用生物玻璃研究进展" 第54-58页 1-8 第32卷, 第4期 2 *

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CN102512256A (en) * 2011-12-26 2012-06-27 辽宁爱尔创生物材料有限公司 Method for dyeing all-zirconium tooth by using film
CN102512256B (en) * 2011-12-26 2014-05-21 辽宁爱尔创生物材料有限公司 Method for dyeing all-zirconium tooth by using film
CN105287231A (en) * 2015-11-13 2016-02-03 徐炜 All-ceramic dental restoration material and preparation method thereof
CN105924157A (en) * 2016-04-29 2016-09-07 成都贝施美生物科技有限公司 Preparation method for zirconia ceramic material powder used for preparation of false tooth
CN105924161A (en) * 2016-04-29 2016-09-07 成都贝施美生物科技有限公司 Zirconia ceramic material powder used for preparation of false tooth
CN107117962A (en) * 2017-05-04 2017-09-01 郑州汉东科技有限公司 A kind of preparation method of the dental all-ceramics repair materials based on electrostatic self-assembled technology
CN107117962B (en) * 2017-05-04 2019-08-16 中山市瑞丰医疗器械有限公司 A kind of preparation method of the dental all-ceramics repair materials based on electrostatic self-assembled technology
CN111533541A (en) * 2019-06-12 2020-08-14 南京赛诺特斯材料科技有限公司 Oral cavity repairing material based on nano zirconia and alumina composite ceramic
CN110981203A (en) * 2019-11-26 2020-04-10 中国科学院上海硅酸盐研究所 High-strength lithium disilicate glass ceramic and preparation method and application thereof
CN112341195A (en) * 2020-10-27 2021-02-09 珠海新茂义齿科技有限公司 Sintering method of colored zirconia false tooth

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