WO2016068288A1 - ジルコニア組成物、ジルコニア仮焼体及びジルコニア焼結体、並びに歯科用製品 - Google Patents
ジルコニア組成物、ジルコニア仮焼体及びジルコニア焼結体、並びに歯科用製品 Download PDFInfo
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- WO2016068288A1 WO2016068288A1 PCT/JP2015/080728 JP2015080728W WO2016068288A1 WO 2016068288 A1 WO2016068288 A1 WO 2016068288A1 JP 2015080728 W JP2015080728 W JP 2015080728W WO 2016068288 A1 WO2016068288 A1 WO 2016068288A1
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- colorant
- mass
- oxide
- sintered body
- zirconia sintered
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- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 title claims abstract description 272
- 239000000203 mixture Substances 0.000 title claims description 88
- 229940023487 dental product Drugs 0.000 title claims description 15
- 239000003086 colorant Substances 0.000 claims abstract description 320
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 39
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910000480 nickel oxide Inorganic materials 0.000 claims abstract description 35
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 28
- VQCBHWLJZDBHOS-UHFFFAOYSA-N erbium(iii) oxide Chemical compound O=[Er]O[Er]=O VQCBHWLJZDBHOS-UHFFFAOYSA-N 0.000 claims abstract description 26
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 21
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 18
- 229910017052 cobalt Inorganic materials 0.000 claims description 18
- 239000010941 cobalt Substances 0.000 claims description 18
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 18
- 238000010304 firing Methods 0.000 claims description 18
- 229910052710 silicon Inorganic materials 0.000 claims description 18
- 239000010703 silicon Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 15
- 229910052804 chromium Inorganic materials 0.000 claims description 14
- 239000011651 chromium Substances 0.000 claims description 14
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims description 11
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 10
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 9
- 150000001463 antimony compounds Chemical class 0.000 claims description 7
- 150000001785 cerium compounds Chemical class 0.000 claims description 6
- 238000004394 yellowing prevention Methods 0.000 claims description 6
- 238000004383 yellowing Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 12
- 238000002845 discoloration Methods 0.000 abstract description 3
- 239000003381 stabilizer Substances 0.000 description 13
- 239000000843 powder Substances 0.000 description 11
- 239000000919 ceramic Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 238000000465 moulding Methods 0.000 description 10
- 229910006501 ZrSiO Inorganic materials 0.000 description 8
- 239000000654 additive Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 150000002506 iron compounds Chemical class 0.000 description 6
- 229910002077 partially stabilized zirconia Inorganic materials 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 5
- ZXGIFJXRQHZCGJ-UHFFFAOYSA-N erbium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Er+3].[Er+3] ZXGIFJXRQHZCGJ-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000000049 pigment Substances 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 4
- MMKQUGHLEMYQSG-UHFFFAOYSA-N oxygen(2-);praseodymium(3+) Chemical compound [O-2].[O-2].[O-2].[Pr+3].[Pr+3] MMKQUGHLEMYQSG-UHFFFAOYSA-N 0.000 description 4
- 229910003447 praseodymium oxide Inorganic materials 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 150000003114 praseodymium compounds Chemical class 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- 229910052845 zircon Inorganic materials 0.000 description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 229940058905 antimony compound for treatment of leishmaniasis and trypanosomiasis Drugs 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 229910000420 cerium oxide Inorganic materials 0.000 description 2
- 239000006103 coloring component Substances 0.000 description 2
- 239000004053 dental implant Substances 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000001513 hot isostatic pressing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000011960 computer-aided design Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 238000004993 emission spectroscopy Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000000462 isostatic pressing Methods 0.000 description 1
- 150000002697 manganese compounds Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002816 nickel compounds Chemical class 0.000 description 1
- 150000002822 niobium compounds Chemical class 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001062 red colorant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 150000003682 vanadium compounds Chemical class 0.000 description 1
- 239000001060 yellow colorant Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
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- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0022—Blanks or green, unfinished dental restoration parts
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- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
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- A61C13/08—Artificial teeth; Making same
- A61C13/083—Porcelain or ceramic teeth
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- A61C5/70—Tooth crowns; Making thereof
- A61C5/73—Composite crowns
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- A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
- A61K6/818—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising zirconium oxide
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- A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
- A61K6/822—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising rare earth metal oxides
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- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9646—Optical properties
- C04B2235/9661—Colour
Definitions
- the present invention claims priority based on Japanese patent application: Japanese Patent Application No. 2014-223636 (filed on October 31, 2014), the entire contents of which are incorporated herein by reference. It shall be.
- the present invention relates to a zirconia sintered body containing a pigment.
- the present invention also relates to a zirconia composition and a zirconia calcined body for producing the zirconia sintered body.
- the present invention relates to a dental product using the zirconia sintered body.
- coloring components may also be added to the base ceramic itself.
- natural teeth are yellowish and reddish, colorants that develop yellow and red colors are added to ceramics.
- red colorant and red colorant praseodymium compounds and iron compounds that are safe for the human body are often added.
- a ceramic material is built and baked on ceramics to which a praseodymium compound and / or an iron compound is added, a desired color may not be obtained. This is presumably because antimony compounds, cerium compounds and the like added as anti-yellowing materials to porcelain suppress color development due to praseodymium compounds and iron compounds. Accordingly, there is a demand for ceramics that can reproduce the same color as natural teeth without being suppressed by antimony compounds, cerium compounds, and the like.
- a sintered body is provided.
- colorant A erbium oxide
- colorant B nickel oxide
- colorant C complex oxide of zirconium and vanadium
- colorant D complex oxide of iron, cobalt and chromium
- colorant E zirconia baked containing at least one colorant selected from the group comprising zirconium, silicon, cobalt and nickel composite oxides A ligation is provided.
- a composition containing zirconium oxide, yttrium oxide, and a colorant contains at least one of colorant A: erbium oxide and colorant B: nickel oxide, and colorant C: a composite oxide of zirconium and vanadium.
- a composition containing zirconium oxide, yttrium oxide, and a colorant containing zirconium oxide, yttrium oxide, and a colorant.
- Colorant Colorant A: Erbium oxide, Colorant B: Nickel oxide, Colorant C: Complex oxide of zirconium and vanadium, Colorant D: Complex oxide of iron, cobalt and chromium, Complex oxidation of zirconium and silicon And a mixture of silicon dioxide and nickel oxide and colorant E: at least one colorant selected from the group comprising complex oxides of zirconium, silicon, cobalt and nickel.
- a calcined body containing zirconium oxide, yttrium oxide, and a colorant.
- the colorant contains at least one of colorant A: erbium oxide and colorant B: nickel oxide, and colorant C: a composite oxide of zirconium and vanadium.
- a calcined body containing zirconium oxide, yttrium oxide, and a colorant.
- Colorant Colorant A: Erbium oxide, Colorant B: Nickel oxide, Colorant C: Complex oxide of zirconium and vanadium, Colorant D: Complex oxide of iron, cobalt and chromium, Complex oxidation of zirconium and silicon And a mixture of silicon dioxide and nickel oxide and colorant E: at least one colorant selected from the group comprising complex oxides of zirconium, silicon, cobalt and nickel.
- a dental product including any zirconia sintered body of each viewpoint is provided.
- the zirconia sintered body has a colorant A of 0.002% by mass to 0.4% by mass, a colorant B of 0.0002% by mass to 0.03% by mass, and The colorant C is contained in an amount of 0.005% by mass to 0.1% by mass.
- the zirconia sintered body contains 0.01% by mass to 0.02% by mass of the colorant B and 0.06% by mass to 0.08% by mass of the colorant C. To do.
- the zirconia sintered body includes at least one of the colorant A, the colorant B, and the colorant C, and at least one of the colorant D and the colorant E. contains.
- the zirconia sintered body contains 0.005% by mass to 0.02% by mass of the colorant C and 0.06% by mass to 0.08% by mass of the colorant E. To do.
- the zirconia sintered body contains 0.07% by mass to 0.09% by mass of the colorant C and 0.05% by mass to 0.2% by mass of the colorant D. To do.
- the zirconia sintered body contains 0.007 mass% to 0.06 mass% of the colorant B and 0.01 mass% to 0.06 mass% of the colorant D. To do.
- the zirconia sintered body contains 0.01% by mass to 0.04% by mass of the colorant A, 0.05% by mass to 0.07% by mass of the colorant C, and It contains 0.05% by mass to 0.08% by mass of the colorant D.
- the zirconia sintered body has a coloring agent A of 0.002% by mass to 0.3% by mass, a coloring agent B of 0.0005% by mass to 0.03% by mass, and coloring. It contains 0.005 mass% to 0.07 mass% of the agent C and 0.004 mass% to 0.04 mass% of the colorant D.
- the composition comprises a colorant A of 0.002% to 0.4% by mass, a colorant B of 0.0002% to 0.03% by mass, and a colorant.
- C is contained in an amount of 0.005% by mass to 0.1% by mass.
- the composition contains 0.01% by mass to 0.02% by mass of colorant B and 0.06% by mass to 0.08% by mass of colorant C.
- the composition contains at least one of colorant A, colorant B, and colorant C, and at least one of colorant D and colorant E. .
- the composition contains 0.02% by mass to 0.03% by mass of the colorant C and 0.06% by mass to 0.08% by mass of the colorant E.
- the composition contains 0.07% by mass to 0.09% by mass of Colorant C and 0.08% by mass to 0.12% by mass of Colorant D.
- the composition contains 0.007% by mass to 0.06% by mass of Colorant B and 0.01% by mass to 0.06% by mass of Colorant D.
- the composition comprises 0.01% to 0.04% by weight of Colorant A, 0.05% to 0.07% by weight of Colorant C, and Colorant. D is contained in an amount of 0.05% by mass to 0.08% by mass.
- the composition comprises a colorant A of 0.002% by mass to 0.3% by mass, a colorant B of 0.0005% by mass to 0.03% by mass, and a colorant C. 0.005 mass% to 0.07 mass%, and Colorant D is contained 0.004 mass% to 0.04 mass%.
- a calcined body produced by firing the composition at 800 ° C. to 1200 ° C.
- a zirconia sintered body produced by firing the composition at 1300 ° C. to 1600 ° C.
- the calcined body has a colorant A of 0.002% by mass to 0.4% by mass, a colorant B of 0.0002% by mass to 0.03% by mass, and a colorant.
- Agent C is contained in an amount of 0.005% by mass to 0.1% by mass.
- the calcined body contains 0.01% to 0.02% by mass of the colorant B and 0.06% to 0.08% by mass of the colorant C. .
- the calcined body contains at least one of the colorant A, the colorant B, and the colorant C, and at least one of the colorant D and the colorant E. To do.
- the calcined body contains 0.02% by mass to 0.03% by mass of the colorant C and 0.06% by mass to 0.08% by mass of the colorant E. .
- the calcined body contains 0.07% by mass to 0.09% by mass of the colorant C and 0.08% by mass to 0.12% by mass of the colorant D. .
- the calcined body contains 0.007 mass% to 0.06 mass% of the colorant B and 0.01 mass% to 0.06 mass% of the colorant D. .
- the calcined body has a colorant A of 0.01% by mass to 0.04% by mass, a colorant C of 0.05% by mass to 0.07% by mass, and a colorant.
- Agent D is contained in an amount of 0.05 to 0.08% by mass.
- the calcined body has a colorant A of 0.002% by mass to 0.3% by mass, a colorant B of 0.0005% by mass to 0.03% by mass, and a colorant.
- C is contained in an amount of 0.005 to 0.07% by mass
- Colorant D is contained in an amount of 0.004 to 0.04% by mass.
- a zirconia sintered body produced by firing a calcined body at 1300 ° C. to 1600 ° C.
- the dental product further includes a porcelain layer laminated on the zirconia sintered body.
- the porcelain layer contains a yellowing prevention material.
- the yellowing prevention material contains at least one of an antimony compound and a cerium compound.
- the zirconia sintered body according to the first embodiment of the present invention will be described.
- the zirconia sintered body of the present invention is a sintered body in which partially stabilized zirconia crystal particles are mainly sintered, and has partially stabilized zirconia as a matrix phase.
- the main crystal phase of zirconia is at least one of a tetragonal system and a cubic system.
- Zirconia may contain both tetragonal and cubic systems. It is preferable that the zirconia sintered body does not substantially contain a monoclinic system in a stage where the hydrothermal treatment test is not performed.
- the zirconia sintered body of the present invention includes not only a sintered body obtained by sintering molded zirconia particles under normal pressure or non-pressurization, but also HIP (Hot Isostatic Pressing) treatment, etc. A sintered body densified by high-temperature pressure treatment is also included.
- the zirconia sintered body of the present invention contains zirconium oxide (zirconia), a stabilizer thereof, and a colorant.
- the zirconia sintered body may contain other additives. Examples of the additive include titanium oxide, aluminum oxide, silicon dioxide and the like.
- the stabilizer in partially stabilized zirconia examples include calcium oxide (CaO), magnesium oxide (MgO), yttrium oxide (Y 2 O 3 ) (hereinafter referred to as “yttria”), cerium oxide (CeO 2 ), and the like.
- the oxide of these is mentioned.
- yttria yttrium oxide
- CeO 2 cerium oxide
- the stabilizer is preferably added in such an amount that the zirconia can be partially stabilized.
- the content of yttrium oxide can be preferably 2 to 7 mol% with respect to the partially stabilized zirconium oxide in the entire zirconia sintered body.
- the content of the stabilizer in the zirconia sintered body can be measured by, for example, inductively coupled plasma (ICP) emission spectroscopy, fluorescent X-ray analysis, or the like.
- ICP inductively coupled plasma
- PSZ partially stabilized zirconia
- the composition and the calcined body serve as a precursor (intermediate product) of the above-described zirconia sintered body of the present invention.
- the calcined body is obtained by firing (that is, calcining) the composition at a temperature that does not lead to sintering.
- the calcined body includes a molded product.
- a dental product for example, a crown-shaped prosthesis obtained by processing a calcined zirconia disk with a CAD / CAM (Computer-Aided Design / Computer-Aided Manufacturing) system is also included in the calcined body.
- the composition and the calcined body contain zirconia crystal particles, a stabilizer, and a colorant (pigment).
- the composition and the calcined body may contain other additives. Examples of the additive include titanium oxide, aluminum oxide, silicon dioxide and the like.
- the stabilizer in the composition and calcined body examples include oxides such as calcium oxide (CaO), magnesium oxide (MgO), yttria, and cerium oxide (CeO 2 ).
- the stabilizer is preferably added in such an amount that the tetragonal zirconia particles can be partially stabilized.
- the yttria content is preferably 2 to 7 mol% with respect to the total number of moles of zirconia and yttria.
- the composition of the present invention includes a powder, a fluid obtained by adding the powder to a solvent, and a molded body obtained by molding the powder into a predetermined shape. That is, the composition may be in the form of a powder, or a paste or a wet composition (that is, it may be in a solvent or may contain a solvent).
- the composition may contain additives such as a binder and a pigment. In addition, in the calculation of the content rate, the mass of additives such as a solvent and a binder is not considered.
- composition of the present invention when it is a molded body, it may be molded by any molding method, and may be molded by, for example, press molding, injection molding, stereolithography, or multistage. It may be molded.
- the composition of the present invention may be subjected to press molding and further subjected to CIP (Cold ⁇ ⁇ ⁇ Isostatic Pressing).
- the calcined body of the present invention can be obtained by firing the composition of the present invention at 800 ° C. to 1200 ° C. under normal pressure.
- the calcined body of the present invention becomes the zirconia sintered body of the present invention by firing at 1350 ° C. to 1600 ° C. under normal pressure.
- the zirconia sintered body, composition and calcined body in the present invention can contain at least one of a metal oxide and a commercially available colorant as a coloring component.
- the zirconia sintered body, composition and calcined body having the above chromaticity are, for example, erbium oxide (Er 2 O 3 ); nickel oxide (NiO); complex oxide of zirconium and vanadium ((Zr, V ) O 2 ); complex oxide of iron, cobalt and chromium ((Co, Fe) (Fe, Cr) 2 O 4 ); complex oxide of zirconium and silicon (zircon (ZrSiO 4 )); silicon dioxide (SiO 2) And at least one oxide or compound selected from the group comprising complex oxides of zirconium, silicon, cobalt and nickel ((Co, Ni) O.ZrSiO 4 ).
- the content ratio of the colorant is a content ratio with respect to the total mass of zirconia, the stabilizer, and the colorant in the zirconia sintered body, the composition, and the calcined body. Further, in the zirconia sintered body and the calcined body, the colorant is not always present in the form of the compound before firing. The colorant may have reacted with components in the zirconia sintered body and calcined body. In this application, the content rate of the coloring agent in a zirconia sintered compact, a composition, and a calcined body is calculated on the basis of the compound before baking (at the time of addition).
- the zirconia sintered body, the composition, and the calcined body can contain, for example, erbium oxide (Er 2 O 3 ) (hereinafter referred to as “colorant A”).
- the zirconia sintered body, the composition and the calcined body may contain nickel oxide (NiO) (hereinafter referred to as “colorant B”).
- the zirconia sintered body, the composition, and the calcined body can contain a composite oxide of zirconium and vanadium ((Zr, V) O 2 ) (hereinafter referred to as “colorant C”).
- a zirconia sintered body, a composition, and a calcined body are composed of a composite oxide of iron, cobalt, and chromium ((Co, Fe) (Fe, Cr) 2 O 4 ); a composite oxide of zirconium and silicon (zircon (ZrSiO 4 )); Silicon dioxide (SiO 2 ); and nickel oxide (NiO) -containing mixture ((Co, Fe) (Fe, Cr) 2 O 4 ) / ZrSiO 4 / SiO 2 / NiO) (hereinafter “colorant D Can be included).
- the zirconia sintered body, the composition and the calcined body may contain a composite oxide of zirconium, silicon, cobalt and nickel ((Co, Ni) O.ZrSiO 4 ) (hereinafter referred to as “colorant E”). it can.
- the zirconia sintered body, the composition, and the calcined body can contain at least one colorant selected from the group including Colorant A, Colorant B, Colorant C, Colorant D, and Colorant E. .
- the zirconia sintered body tends to be reddish.
- the colorant B is added, the zirconia sintered body tends to be reddish.
- the colorant C is added, the zirconia sintered body tends to be yellowish.
- the coloring agent D is added, the zirconia sintered body tends to be grayish.
- the coloring agent E is added, the zirconia sintered body tends to be grayish.
- praseodymium oxide Pr 6 O 11
- a complex oxide of zirconium and vanadium ((Zr, V) O 2 ) for example, colorant C
- Each colorant can also contain components other than those listed above.
- the colorant C can contain an iron compound, a nickel compound, a niobium compound, a titanium compound and the like in addition to the above components.
- the colorant D can contain a manganese compound, a vanadium compound, and the like in addition to the above components.
- the colorant E can contain an iron compound in addition to the above components.
- Each colorant can contain components not related to color development in addition to components related to color development of the zirconia sintered body.
- the content of the colorant B the NiO component contained in the colorant other than the colorant B is not considered.
- the content of each colorant can be adjusted, for example, so that the total amount of NiO components does not exceed a certain upper limit or less than the lower limit.
- the zirconia sintered body, the composition and the calcined body can contain at least two colorants among the colorant A, the colorant B, the colorant C, the colorant D and the colorant E.
- the zirconia sintered body, the composition, and the calcined body can contain 0% by mass to 0.5% by mass of the colorant A.
- the zirconia sintered body, the composition, and the calcined body can contain 0% by mass to 0.06% by mass of the colorant B.
- the zirconia sintered body, the composition, and the calcined body can contain 0% by mass to 0.2% by mass of the colorant C.
- the zirconia sintered body, the composition, and the calcined body can contain 0% by mass to 0.2% by mass of the colorant D.
- the zirconia sintered body, the composition, and the calcined body can contain 0% by mass to 0.1% by mass of the colorant E.
- colorant C for example, “Z-300 yellow” manufactured by Nippon Ceramics Industry Co., Ltd. can be used.
- colorant D for example, “4555 gray” manufactured by Kawamura Chemical Co., Ltd. can be used.
- colorant E for example, “H-150 gray” manufactured by Nippon Ceramics Industry Co., Ltd. can be used.
- L * is 64 to 76
- a * is ⁇ 6 to 3
- b * is 3 to 27 in the L * a * b * color system.
- the zirconia sintered body having such chromaticity can have a color like natural teeth.
- the chromaticity (L * , a * , b * ) according to the L * a * b * color system is a numerical value measured by preparing a sample and making the background black as in the examples described later. is there.
- a zirconia and a stabilizer are wet mixed in water to form a slurry.
- the slurry is dried and granulated.
- the granulated product is calcined to produce a primary powder.
- a colorant is added to each powder.
- the amount of the colorant added is appropriately adjusted so as to develop the color of each layer.
- zirconia is grind
- the slurry is dried and granulated.
- an additive such as aluminum oxide, titanium oxide, or a binder is added, it may be added when producing the primary powder, or may be added when producing the secondary powder.
- press molding is performed to produce a molded product as the composition of the present invention.
- the zirconia powder is sintered by firing the composition at 1400 ° C. to 1600 ° C., preferably 1450 ° C. to 1550 ° C., to produce the zirconia sintered body of the present invention. .
- the composition is fired at 800 ° C. to 1200 ° C. to prepare the calcined body.
- the calcined body is fired at 1400 ° C. to 1600 ° C., preferably 1450 ° C. to 1550 ° C. to sinter the zirconia powder to produce the zirconia sintered body of the present invention.
- the molding may be performed by cutting or the like at the stage of the calcined body, or may be performed after sintering. Molding can be performed with a CAD / CAM system.
- the manufacturing method of the dental product is the same as the above manufacturing method of the sintered body except that the calcined body or the sintered body is formed into a crown shape.
- the first embodiment even when a porcelain material containing an antimony compound and / or a cerium compound is baked on a zirconia sintered body, discoloration of the zirconia sintered body can be suppressed. This can facilitate the production of a dental product having a color similar to the color of the patient's teeth.
- the sintered body, calcined body and composition of the present invention will be described by paying attention to chromaticity and composition. Other matters are the same as those in the first embodiment.
- a zirconia sintered body according to the second embodiment of the present invention will be described.
- the zirconia sintered body, calcined body, and composition according to the second embodiment can contain at least one of colorant A and colorant B, and colorant C.
- 0% by mass to 0.4% by mass of colorant A, 0.0002% by mass to 0.03% by mass of colorant B, and 0. 005 mass% to 0.1 mass% can be contained. Thereby, the color of a specific natural tooth can be reproduced.
- L * a * b * L * in the color system is 66 ⁇ 76, a * is -6 ⁇ 3, b * is a 3-27.
- a zirconia sintered body according to the third embodiment of the present invention will be described.
- the colorant A is 0.002% by mass to 0.4% by mass
- the colorant B is 0.0002% by mass to 0.03% by mass.
- 0.005 mass% to 0.1 mass% of the colorant C can be contained. Thereby, the color of a specific natural tooth can be reproduced.
- L * a * b * L * is 66 to 76 in the color system, a * is -4 ⁇ 3, b * is a 3-27.
- a zirconia sintered body according to the fourth embodiment of the present invention will be described.
- Zirconia sintered body according to the fourth embodiment L * a * b * L * of 70 to 74 in the color system, a * is -6 to -3, the b * is in 22-26 preferred.
- a zirconia sintered body according to the fifth embodiment of the present invention will be described.
- the zirconia sintered body, calcined body, and composition according to the fifth embodiment are at least one color selected from the group including Colorant A, Colorant B, Colorant C, Colorant D, and Colorant E.
- An agent can be contained.
- the zirconia sintered body, calcined body, and composition preferably contain at least one of colorant A, colorant B, and colorant C, and at least one of colorant D and colorant E.
- Zirconia sintered body according to the fifth embodiment is preferably a L * a * b * L * between 64 and 75 in the color system, a * is -3 ⁇ 3, b * is 7-19.
- a zirconia sintered body according to the sixth embodiment of the present invention will be described.
- the colorant C is 0.005 mass% to 0.02 mass%
- the colorant E is 0.06 mass% to 0.08 mass%. % Can be contained.
- L * is 74 to 75
- a * is ⁇ 2 to ⁇ 1
- b * is 10 to 11 in the L * a * b * color system.
- a zirconia sintered body according to the seventh embodiment of the present invention will be described.
- the colorant C is 0.07% by mass to 0.09% by mass
- the colorant D is 0.05% by mass to 0.2% by mass. % Can be contained.
- L * is 68 to 69
- a * is -3 to -2
- b * is 18 to 19 in the L * a * b * color system.
- a zirconia sintered body according to the eighth embodiment of the present invention will be described.
- the colorant B is 0.007% by mass to 0.06% by mass
- the colorant D is 0.01% by mass to 0.06% by mass. % Can be contained.
- L * is 64 to 71
- a * is 0 to 2
- b * is 7 to 13 in the L * a * b * color system.
- a zirconia sintered body according to the ninth embodiment of the present invention will be described.
- the zirconia sintered body, calcined body, and composition according to the ninth embodiment 0.01% to 0.04% by weight of the colorant A and 0.05% to 0.07% by weight of the colorant C are included. And 0.05 to 0.08 mass% of the colorant D can be contained.
- L * is 67 to 69
- a * is ⁇ 2 to
- b * is 17 to 18 in the L * a * b * color system.
- a zirconia sintered body according to the tenth embodiment of the present invention will be described.
- the colorant A is 0.002% by mass to 0.3% by mass
- the colorant B is 0.0005% by mass to 0.03% by mass
- the colorant C may be contained in an amount of 0.005% to 0.07% by mass
- the colorant D may be contained in an amount of 0.004% to 0.04% by mass.
- L * is 65 to 74
- a * is ⁇ 2 to 3
- b * is 9 to 18 in the L * a * b * color system.
- a dental product according to the eleventh embodiment of the present invention will be described.
- the dental product includes the zirconia sintered body or calcined body according to the above embodiment.
- the dental product can further include porcelain (eg, a glass material) laminated on the zirconia sintered body.
- the porcelain material can contain a yellowing prevention material.
- As the yellowing prevention material for example, an antimony compound can be used.
- Dental products include prosthetic materials such as ceramic frames and full cantour crowns.
- the dental prosthetic material preferably has a crown shape.
- the dental products include, for example, orthodontic products (for example, orthodontic brackets) and dental implant products (for example, dental implant abutments).
- a zirconia sintered body to which the colorant described in the following table was added was prepared, and the chromaticity of each sample was measured.
- a colorant was added to and mixed with partially stabilized zirconia powder containing 4 mol% of yttria as a stabilizer.
- 1.2 g of the mixture was put into a cylindrical mold having a diameter of about 18 mm and molded at a pressure of 30 kN to prepare a molding composition.
- the molding composition was fired at 1500 ° C. for 2 hours to produce a disk-shaped zirconia sintered body.
- the sample surface was polished and the surface was finished to a mirror surface (# 2000 or more) to prepare a sample.
- Colorant A is erbium oxide (Er 2 O 3 ) manufactured by Iwatani Corporation.
- Colorant B is nickel oxide (NiO) manufactured by Iwatsuki Kasumi Co., Ltd.
- the colorant C is “Z-300 yellow” manufactured by Nissho Pigment Industries, Ltd., which is a complex oxide of zirconium and vanadium ((Zr, V) O 2 ).
- the colorant D is a composite oxide of iron, cobalt and chromium ((Co, Fe) (Fe, Cr) 2 O 4 ); a composite oxide of zirconium and silicon (zircon (ZrSiO 4 )); silicon dioxide (SiO 2 ).
- NiO nickel oxide
- ZrSiO 4 ZrSiO 4 / SiO 2 / NiO
- the coloring agent E is “H-150 gray” manufactured by Nissho Pigment Industrial Co., Ltd., which is a complex oxide of zirconium, silicon, cobalt and nickel ((Co, Ni) O.ZrSiO 4 ).
- the measurement similar to an Example was performed also about the sample using a praseodymium oxide as a comparative example.
- the colorant A is erbium oxide (Er 2 O 3 ).
- the colorant F is iron oxide (Fe 2 O 3 ).
- the colorant G is praseodymium oxide (Pr 6 O 11 ).
- Examples 1 to 55 had a color like natural teeth. In addition, Examples 1 to 55 had the same color as Comparative Examples 1 to 9. As a result, the color similar to that of natural teeth could be developed without using praseodymium oxide and an iron compound as colorants.
- the samples according to Examples 1 to 11 had the same color.
- the samples according to Examples 12 to 25 had the same color.
- the samples according to Examples 26 to 27 had the same color.
- the samples according to Examples 28 to 49 had the same color.
- the samples according to Examples 50 to 55 had the same color. Therefore, the samples according to Examples 1 to 55 were roughly classified into five systems according to colors. It should be noted that the samples of Examples 1 to 55 can be further classified according to color.
- Example 9 Samples according to Example 9, Example 24, Example 32, and Comparative Example 2 were prepared, and porcelain was baked on each sample, and a change in color was measured.
- Tables 4 to 7 show the measurement results.
- the porcelain material 1 shown in Tables 4 to 7 is Celabian ZR Translucent Tx manufactured by Kuraray Noritake Dental Co., Ltd.
- Porcelain 2 is Celabian ZR External Stain E Glaze manufactured by Kuraray Noritake Dental Corporation.
- Porcelain was built up on one side of the sample produced in the same manner as in Examples 1 to 55 in accordance with the method of using each porcelain.
- Porcelain 1 was prepared to a thickness of 0.2 mm ⁇ 0.1 mm using a brush.
- Porcelain 2 was prepared to a thickness of 0.02 mm ⁇ 0.01 mm using a brush.
- the term “before firing” as used in Tables 4 to 7 is a sample before the ceramic material is built up.
- One-time firing is a sample that has been baked after building up porcelain.
- the 2-5 times firing is a sample obtained by firing a sample baked with porcelain. If fired twice, the sample fired once is fired again.
- porcelain 1 was built up, the sample was fired at 930 ° C.
- the equation difference ⁇ E is a difference between the chromaticity of the sample before firing and the chromaticity of the sample baked with the porcelain, based on Equation 1.
- the chromaticity of the sample before firing is (L * 1 , a * 1 , b * 1 )
- the chromaticity of the sample after firing once is (L * 2 , a * 2 , b * 2 ).
- the difference ⁇ E can be calculated.
- the formula difference represents the magnitude of the color change before and after baking the porcelain.
- Table 8 shows the analysis result of Colorant C
- Table 9 shows the analysis result of Colorant D
- Table 10 shows the analysis result of Colorant E.
- the mass ratio converted to the oxide of each element is shown, and it does not necessarily mean that the colorant contains each element in the form of the oxide described in the table in the colorant. .
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Abstract
Description
本発明は、日本国特許出願:特願2014-223636号(2014年10月31日出願)に基づき優先権を主張するものであり、同出願の全記載内容は引用をもって本書に組み込み記載されているものとする。
本発明は、顔料を含有するジルコニア焼結体に関する。また、本発明は、当該ジルコニア焼結体を製造するためのジルコニア組成物及びジルコニア仮焼体に関する。さらに、本発明は、当該ジルコニア焼結体を用いた歯科用製品に関する。
Claims (36)
- 着色剤A:酸化エルビウム、及び
着色剤B:酸化ニッケル、のうちの少なくとも一方と、
着色剤C:ジルコニウム及びバナジウムの複合酸化物と、を含有する、ジルコニア焼結体。 - 前記着色剤Aを0.002質量%~0.4質量%、
前記着色剤Bを0.0002質量%~0.03質量%、及び
前記着色剤Cを0.005質量%~0.1質量%含有する、請求項1に記載のジルコニア焼結体。 - 前記着色剤Bを0.01質量%~0.02質量%、及び
前記着色剤Cを0.06質量%~0.08質量%含有する、請求項1に記載のジルコニア焼結体。 - 着色剤A:酸化エルビウム、
着色剤B:酸化ニッケル、
着色剤C:ジルコニウム及びバナジウムの複合酸化物、
着色剤D:鉄、コバルト及びクロムの複合酸化物、ジルコニウム及びケイ素の複合酸化物、二酸化ケイ素、及び酸化ニッケルの混合物、並びに
着色剤E:ジルコニウム、ケイ素、コバルト及びニッケルの複合酸化物
を含む群から選択される少なくとも1つの着色剤を含有する、ジルコニア焼結体。 - 前記着色剤A、前記着色剤B及び前記着色剤Cのうちの少なくとも1つと、
前記着色剤D及び前記着色剤Eのうちの少なくとも1つと、を含有する請求項4に記載のジルコニア焼結体。 - 前記着色剤Cを0.005質量%~0.02質量%、及び
前記着色剤Eを0.06質量%~0.08質量%含有する、請求項4又は5に記載のジルコニア焼結体。 - 前記着色剤Cを0.07質量%~0.09質量%、及び
前記着色剤Dを0.05質量%~0.2質量%含有する、請求項4又は5に記載のジルコニア焼結体。 - 前記着色剤Bを0.007質量%~0.06質量%、及び
前記着色剤Dを0.01質量%~0.06質量%含有する、請求項4又は5に記載のジルコニア焼結体。 - 前記着色剤Aを0.01質量%~0.04質量%、
前記着色剤Cを0.05質量%~0.07質量%、及び
前記着色剤Dを0.05質量%~0.08質量%含有する、請求項4又は5に記載のジルコニア焼結体。 - 前記着色剤Aを0.002質量%~0.3質量%、
前記着色剤Bを0.0005質量%~0.03質量%、
前記着色剤Cを0.005質量%~0.07質量%、及び
前記着色剤Dを0.004質量%~0.04質量%含有する、請求項4又は5に記載のジルコニア焼結体。 - 酸化ジルコニウムと、
酸化イットリウムと、
着色剤と、を含有し、
前記着色剤は、
着色剤A:酸化エルビウム、及び
着色剤B:酸化ニッケルのうちの少なくとも一方と、
着色剤C:ジルコニウム及びバナジウムの複合酸化物と、を含む、組成物。 - 前記着色剤Aを0.002質量%~0.4質量%、
前記着色剤Bを0.0002質量%~0.03質量%、及び
前記着色剤Cを0.005質量%~0.1質量%含有する、請求項11に記載の組成物。 - 前記着色剤Bを0.01質量%~0.02質量%、及び
前記着色剤Cを0.06質量%~0.08質量%含有する、請求項11に記載の組成物。 - 酸化ジルコニウムと、
酸化イットリウムと、
着色剤と、を含有し、
前記着色剤は、
着色剤A:酸化エルビウム、
着色剤B:酸化ニッケル、
着色剤C:ジルコニウム及びバナジウムの複合酸化物、
着色剤D:鉄、コバルト及びクロムの複合酸化物、ジルコニウム及びケイ素の複合酸化物、二酸化ケイ素、及び酸化ニッケルの混合物、並びに
着色剤E:ジルコニウム、ケイ素、コバルト及びニッケルの複合酸化物
を含む群から選択される少なくとも1つの着色剤を含む、組成物。 - 前記着色剤A、前記着色剤B及び前記着色剤Cのうちの少なくとも1つと、
前記着色剤D及び前記着色剤Eのうちの少なくとも1つと、を含有する請求項14に記載の組成物。 - 前記着色剤Cを0.02質量%~0.03質量%、及び
前記着色剤Eを0.06質量%~0.08質量%含有する、請求項14又は15に記載の組成物。 - 前記着色剤Cを0.07質量%~0.09質量%、及び
前記着色剤Dを0.08質量%~0.12質量%含有する、請求項14又は15に記載の組成物。 - 前記着色剤Bを0.007質量%~0.06質量%、及び
前記着色剤Dを0.01質量%~0.06質量%含有する、請求項14又は15に記載の組成物。 - 前記着色剤Aを0.01質量%~0.04質量%、
前記着色剤Cを0.05質量%~0.07質量%、及び
前記着色剤Dを0.05質量%~0.08質量%含有する、請求項14又は15に記載の組成物。 - 前記着色剤Aを0.002質量%~0.3質量%、
前記着色剤Bを0.0005質量%~0.03質量%、
前記着色剤Cを0.005質量%~0.07質量%、及び
前記着色剤Dを0.004質量%~0.04質量%含有する、請求項14又は15に記載の組成物。 - 請求項11~20のいずれか一項に記載の組成物を800℃~1200℃で焼成して作製した、仮焼体。
- 請求項11~20のいずれか一項に記載の組成物を1300℃~1600℃で焼成して作製した、ジルコニア焼結体。
- 酸化ジルコニウムと、
酸化イットリウムと、
着色剤と、を含有し、
前記着色剤は、
着色剤A:酸化エルビウム、及び
着色剤B:酸化ニッケルのうちの少なくとも一方と、
着色剤C:ジルコニウム及びバナジウムの複合酸化物と、を含む、仮焼体。 - 前記着色剤Aを0.002質量%~0.4質量%、
前記着色剤Bを0.0002質量%~0.03質量%、及び
前記着色剤Cを0.005質量%~0.1質量%含有する、請求項23に記載の仮焼体。 - 前記着色剤Bを0.01質量%~0.02質量%、及び
前記着色剤Cを0.06質量%~0.08質量%含有する、請求項23に記載の仮焼体。 - 酸化ジルコニウムと、
酸化イットリウムと、
着色剤と、を含有し、
前記着色剤は、
着色剤A:酸化エルビウム、
着色剤B:酸化ニッケル、
着色剤C:ジルコニウム及びバナジウムの複合酸化物、
着色剤D:鉄、コバルト及びクロムの複合酸化物、ジルコニウム及びケイ素の複合酸化物、二酸化ケイ素、及び酸化ニッケルの混合物、並びに
着色剤E:ジルコニウム、ケイ素、コバルト及びニッケルの複合酸化物
を含む群から選択される少なくとも1つの着色剤を含む、仮焼体。 - 前記着色剤A、前記着色剤B及び前記着色剤Cのうちの少なくとも1つと、
前記着色剤D及び前記着色剤Eのうちの少なくとも1つと、を含有する請求項26に記載の仮焼体。 - 前記着色剤Cを0.02質量%~0.03質量%、及び
前記着色剤Eを0.06質量%~0.08質量%含有する、請求項26又は27に記載の仮焼体。 - 前記着色剤Cを0.07質量%~0.09質量%、及び
前記着色剤Dを0.08質量%~0.12質量%含有する、請求項26又は27に記載の仮焼体。 - 前記着色剤Bを0.007質量%~0.06質量%、及び
前記着色剤Dを0.01質量%~0.06質量%含有する、請求項26又は27に記載の仮焼体。 - 前記着色剤Aを0.01質量%~0.04質量%、
前記着色剤Cを0.05質量%~0.07質量%、及び
前記着色剤Dを0.05質量%~0.08質量%含有する、請求項26又は27に記載の仮焼体。 - 前記着色剤Aを0.002質量%~0.3質量%、
前記着色剤Bを0.0005質量%~0.03質量%、
前記着色剤Cを0.005質量%~0.07質量%、及び
前記着色剤Dを0.004質量%~0.04質量%含有する、請求項26又は27に記載の仮焼体。 - 請求項23~32のいずれか一項に記載の仮焼体を1300℃~1600℃で焼成して作製した、ジルコニア焼結体。
- 請求項1~10、22及び33のいずれか一項に記載のジルコニア焼結体を備える、歯科用製品。
- 前記ジルコニア焼結体に積層された陶材層をさらに備え、
前記陶材層は、黄変防止材を含有する、請求項34に記載の歯科用製品。 - 前記黄変防止材は、アンチモン化合物及びセリウム化合物のうちの少なくとも一方を含有する、請求項35に記載の歯科用製品。
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JP2016556656A JP6718377B2 (ja) | 2014-10-31 | 2015-10-30 | ジルコニア組成物、ジルコニア仮焼体及びジルコニア焼結体、並びに歯科用製品 |
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EP15856037.5A EP3214057B1 (en) | 2014-10-31 | 2015-10-30 | Zirconia composition, zirconia calcined body and zirconia sintered body, and dental product |
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CN107148407A (zh) | 2017-09-08 |
US20170334786A1 (en) | 2017-11-23 |
EP3214057B1 (en) | 2024-10-09 |
JPWO2016068288A1 (ja) | 2017-10-05 |
KR20170078694A (ko) | 2017-07-07 |
CN118344140A (zh) | 2024-07-16 |
US10273189B2 (en) | 2019-04-30 |
EP3214057A1 (en) | 2017-09-06 |
JP6718377B2 (ja) | 2020-07-08 |
EP3266439A1 (en) | 2018-01-10 |
EP3214057A4 (en) | 2018-06-06 |
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US10280120B2 (en) | 2019-05-07 |
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