CN104844200A - Multiple-oxide-doped gradient-color zirconia dental prosthesis and preparation method thereof - Google Patents
Multiple-oxide-doped gradient-color zirconia dental prosthesis and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a multiple-oxide-doped gradient-color zirconia dental prosthesis and a preparation method thereof. The multiple-oxide-doped gradient-color zirconia dental prosthesis is formed by mixing and overlaying more than one of dental zirconia porcelain mixed powder A, B and C with powder D on each porcelain layer according to different mass fractions. The three mixed powder is obtained by respectively doping ErO2, CeO2 and Fe2O3 with zirconia porcelain raw materials. The powder D refers to undoped zirconia porcelain raw materials. The preparation method includes mixed powder preparation, pre-dry-pressing, dry pressing, cold isostatic pressure forming, pre-sintering, blank engraving and final sintering. The preparation method is simple and easy to operate, the obtained prosthesis is wide in color regulation range and uniform in transition and has similar distribution characteristics to a natural tooth, and attractiveness of the zirconia all-porcelain prosthesis is improved. In addition, through the dry pressing process added during forming, uniformity of a powder overlaying and mixing stage is guaranteed and sintering body volume density and strength are improved.
Description
Technical field
The invention belongs to dental ceramic preparing technical field, particularly one kind of multiple oxide-doped gradient color zirconium white dental prosthesis and preparation method thereof.
Technical background
Zirconium white dentistry all-ceramic crown, compared to metal crown and the attached molten metal crown of porcelain, has lot of advantages, and its high-biocompatibility, high strength, splendid aesthetic property are that the latter can not compare.Other all-ceramic prosthesis are compared its fracture toughness property and are had great advantage again, obtain very large development, receive the concern of more and more people over nearly 20 years.In order to reproduce natural creamy white, staining fluid immersion idiosome and zirconia powder production procedure is generally divided into directly to adulterate two kinds to the coloring mode of zirconium oxide prosthesis clinically.By this mode, the color of zirconium white dental prosthesis can be made more to fit natural creamy white, be therefore widely used.
But the color of the dummy of dyeing oxidation is at present single, and natural teeth body color distribution is also uneven, but there is certain color gradient.In general, from root of the tooth to crest color gradually thin out, brighten.Therefore, the color distribution of the zirconium oxide prosthesis of solid color can not be fitted natural teeth body completely.
Although the dental zirconium oxide ceramics in repairing material transparency of current preparation and intensity all meet clinical requirement, mostly there is solid color, the distribution characteristics of natural teeth color gradual change can not be met.Domestic some preparation methods relating to secondary color machinable dental zirconium oxide pottery, its color control be single yellow to white, poor with natural creamy white color-match.The interpolation of tinting material has negative impact to zirconium oxide prosthesis intensity in addition, and the densification improving further dental zirconium oxide prosthesis element embryo is to ensure that its intensity after sintering is also the aspect needing to improve.Therefore lack in prior art that a kind of color gradient effect is obvious, color control is abundant, color transition smooth uniform, to meet the dental zirconium oxide ceramics in repairing material of natural teeth Color Distribution Features.
Summary of the invention
In order to solve Problems existing in background technology, the object of the invention is to propose one kind of multiple oxide-doped gradient color zirconium white dental prosthesis and preparation method thereof, the zirconia ceramics dummy material utilizing the method to prepare has gradient color feature, more fit with natural teeth Colour, aesthetics improves, and will greatly increase the aesthetic of dental zirconium oxide pottery.And simple process, improves working efficiency, reduce the skill level requirement to operator simultaneously.
The technical solution used in the present invention is:
One, one kind of multiple oxide-doped gradient color zirconium white dental prosthesis:
To be mixed by different mass mark at each enamel coating by more than one in three kinds of dental zirconium oxides pottery mixed powder A, B, C and powder D and be formed by stacking, as shown in Figure 1, mixed powder A, mixed powder B, mixed powder C are respectively ErO
2doped zirconia porcelain powder raw material, CeO
2doped zirconia porcelain powder raw material, Fe
2o
3doped zirconia porcelain powder raw material, powder D is non-impurity-doped zirconium oxide porcelain powder raw material.
Described dental zirconium oxide pottery mixed powder A is grouped into by the one-tenth of following quality proportioning: ErO
2≤ 5.0wt%, Y
2o
3for 5.4wt%, Al
2o
3be 0.2 ~ 0.4wt%, Na
2o≤0.01wt%, SiO
2≤ 0.02wt%, all the other are ZrO
2;
Described dental zirconium oxide pottery mixed powder B is grouped into by the one-tenth of following quality proportioning: CeO
2≤ 20.0wt%, Y
2o
3for 5.4wt%, Al
2o
3be 0.2 ~ 0.4wt%, Na
2o≤0.01wt%, SiO
2≤ 0.02wt%, all the other are ZrO
2;
Described dental zirconium oxide pottery mixed powder C is grouped into by the one-tenth of following quality proportioning: Fe
2o
3≤ 1.2wt%, Y
2o
3for 5.4wt%, Al
2o
3be 0.2 ~ 0.4wt%, Na
2o≤0.01wt%, SiO
2≤ 0.02wt%, all the other are ZrO
2;
Described powder D is grouped into by the one-tenth of following quality proportioning: Y
2o
3for 5.4wt%, Al
2o
3be 0.2 ~ 0.4wt%, Na
2o≤0.01wt%, SiO
2≤ 0.02wt%, Fe
2o
3≤ 0.01wt%, all the other are ZrO
2.
Each enamel coating described is added in shaping mould according to the successively layering of sintering color order from shallow to deep and becomes multilayered structure through predry swaging, and multiple-layer stacked is complete obtains the raw embryo of gradient color dummy through dry-pressing formed, isostatic cool pressing, and the number of plies is 5-11.
In every layer of described enamel coating, massfraction≤37% of mixed powder A, massfraction≤43% of mixed powder B, massfraction≤25% of mixed powder C, exceed this restriction, the dummy obtained differs comparatively large with natural creamy white, the color of regulation and control loses using value.
Difference≤10% of mixed powder A, B and C total mass mark contained by adjacent described enamel coating, and every layer of enamel coating ulking thickness is 10 ~ 20mm, to ensure that between each layer, color transition is level and smooth, even.
Two, the preparation method of one kind of multiple oxide-doped gradient color zirconium white dental prosthesis:
1) prepare mixed powder A, B, C and powder D, mixed powder A, mixed powder B, mixed powder C are respectively ErO
2doped zirconia porcelain powder raw material, CeO
2doped zirconia porcelain powder raw material, Fe
2o
3doped zirconia porcelain powder raw material, powder D is non-impurity-doped zirconium oxide porcelain powder raw material;
2) prepare enamel coating successively, one or more in mixed powder A, B, C and powder D mix by each enamel coating; Each enamel coating is successively added layering superposition in shaping mould according to sintering color depth order from shallow to deep, as shown in Figure 1, it is molded that each enamel coating first carries out predry, the preformed pressure of every one deck is 0.5 ~ 2Mpa, carry out dry-pressing formed after multiple-layer stacked, its pressure is 5 ~ 20MPa, dwell time 5 ~ 30s, obtains the zirconium white dentistry ceramic green embryo of color gradual change;
3) by zirconium white dentistry ceramic green embryo cold isostatic compaction again, its pressure is 80 ~ 200MPa, dwell time 60s ~ 120s; Obtain the raw embryo of zirconium white;
4) raw for zirconium white embryo is put into sintering oven and carry out presintering, the sintering temperature of presintering is 550 ~ 1010 DEG C, soaking time 90 ~ 120min, obtains the zirconium white element embryo of color gradual change;
5) then carry out plain embryo engraving, plain embryo engraving comprises plain embryo correction, size control, polishing and cleans;
6) finally sinter, sintering temperature is 1300 ~ 1550 DEG C, soaking time 60 ~ 120min, obtains the zirconium white dentistry ceramic sintered bodies of color gradual change.
After described mixed powder A, B, C and powder D all add dehydrated alcohol ball milling 24h with respective component proportion, then obtain dry 12h at 100 DEG C after.
Described dental zirconium oxide pottery mixed powder A is grouped into by the one-tenth of following quality proportioning: ErO
2≤ 5.0wt%, Y
2o
3for 5.4wt%, Al
2o
3be 0.2 ~ 0.4wt%, Na
2o≤0.01wt%, SiO
2≤ 0.02wt%, all the other are ZrO
2;
Described dental zirconium oxide pottery mixed powder B is grouped into by the one-tenth of following quality proportioning: CeO
2≤ 20.0wt%, Y
2o
3for 5.4wt%, Al
2o
3be 0.2 ~ 0.4wt%, Na
2o≤0.01wt%, SiO
2≤ 0.02wt%, all the other are ZrO
2;
Described dental zirconium oxide pottery mixed powder C is grouped into by the one-tenth of following quality proportioning: Fe
2o
3≤ 1.2wt%, Y
2o
3for 5.4wt%, Al
2o
3be 0.2 ~ 0.4wt%, Na
2o≤0.01wt%, SiO
2≤ 0.02wt%, all the other are ZrO
2;
Described powder D is grouped into by the one-tenth of following quality proportioning: Y
2o
3for 5.4wt%, Al
2o
3be 0.2 ~ 0.4wt%, Na
2o≤0.01wt%, SiO
2≤ 0.02wt%, Fe
2o
3≤ 0.01wt%, all the other are ZrO
2.
In every layer of described enamel coating, massfraction≤37% of mixed powder A, massfraction≤43% of mixed powder B, massfraction≤25% of mixed powder C.
Difference≤10% of mixed powder A, B and C total mass mark contained by adjacent described enamel coating, and every layer of enamel coating ulking thickness is 10 ~ 20mm, to ensure that between each layer, color transition is level and smooth, even.
Beneficial effect of the present invention is:
Dental prosthesis of the present invention has and increases gradually from bottom to top color depth, can comprise the enamel coating of different colours, color gradient effect is obvious, color control is abundant, color transition smooth uniform, meets natural teeth Color Distribution Features.In moulding process, pre-dry-pressing ensures the homogeneity in powder superposition stage, useful to the raising of sintered compact volume density, intensity.
Preparation technology of the present invention is simple, and effect stability, easily operates.
Accompanying drawing explanation
Fig. 1 is the present invention's progressive coloured zirconium white dentistry ceramic plate schematic diagram, color even transition between adjacent two layers, colourity gradual change.
Embodiment
Below by the description to embodiment, the effect and principle of work etc. of the specific embodiment of the present invention as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.
Embodiments of the invention are as follows:
Embodiment 1:
By powder A, B, C, D respectively in massfraction ratio: 10%:10%:10%:70%; 13%:13%:13%:61%; 16%:16%:16%:52%; 19%:19%:19%:43%; 22%:22%:22%:34% mixes, and obtains the powder enamel coating of 5 kinds of different colours, and the total mass mark difference wherein containing A, B, C in adjacent enamel coating is 9%, and every layer of ulking thickness is 15mm.
By said sequence, 5 kinds of powders are successively added layering superposition in shaping mould, predry pressure pressure is 0.5Mpa, and dry-pressing formed pressure is 5MPa, dwell time 5s.Then cold isostatic compaction is carried out, isostatic cool pressing pressure 200MPa, dwell time 60s.The idiosome prepared is put into sintering oven and is carried out presintering, sintering temperature 850 DEG C, soaking time 90min.Carry out plain embryo engraving subsequently, ensure the surface smoothness of plain embryo, size meets the demands.Finally finally sinter, sintering temperature 1450 DEG C, soaking time 60min, obtain the dental zirconium oxide pottery with gradient color feature.Dental zirconium oxide pottery each layer ErO from top to bottom of the gradient color feature prepared in this example
2, CeO
2, Fe
2o3 content scope is as follows: ErO
2(0.50wt% ~ 1.10wt%), CeO
2(2.00wt% ~ 4.40wt%), Fe
2o
3(0.12wt% ~ 0.26wt%), after the various powders of the present embodiment all add dehydrated alcohol ball milling 24h with respective component proportion, then obtains dry 12h at 100 DEG C after.
Embodiment 1 uses EasyShade photoelectric color comparator at CIE-1964-Lab colorimeter system, to dummy colour examining under 10 ° of standard observers.The position, 3, upper, middle and lower of gradient color zirconium white dental prosthesis of getting many oxide doping is measured 3 times respectively and is averaged.The colour examining result (L*/a*/b*) of embodiment 1: upper end (69.4/3.6/23.5), middle part (77.8/2.1/22.4), lower end (82.6/1.7/19.3).Have data to show, the chromaticity range of Chinese's tooth is L*:63.68 ~ 86.54, a*:0.08 ~ 3.87, b*:6.67 ~ 29.79.As can be seen here, the colour examining result of embodiment 1 is coincide the colourity of tooth very much, and the present invention can realize and the coincideing of the colourity of tooth.
Embodiment 2:
By powder A, C, D respectively in massfraction ratio: 12%:10%:78%; 14%:12%:74%; 16%:14%:70%; 18%:16%:66%; 20%:18%:62%; 22%:20%:58%; 24%:22%:54% mixes, and obtains the powder enamel coating of 7 kinds of different colours, and the total mass mark difference wherein containing A, C in adjacent enamel coating is 4%, and every layer of ulking thickness is 20mm.
By said sequence, 7 kinds of powders are successively added layering superposition in shaping mould, predry pressure pressure is 5Mpa, dry-pressing formed pressure 20MPa, dwell time 30s.Then cold isostatic compaction is carried out, isostatic cool pressing pressure 120MPa, dwell time 90s.The idiosome prepared is put into sintering oven and is carried out presintering, sintering temperature 750 DEG C, soaking time 100min.Carry out plain embryo engraving subsequently, ensure the surface smoothness of plain embryo, size meets the demands.Carry out base substrate reparation subsequently, surface smoothness, the size of guarantee presintering body meet the demands.Finally finally sinter, sintering temperature 1400 DEG C, soaking time 70min, obtain the dental zirconium oxide pottery with gradient color feature.Dental zirconium oxide pottery each layer ErO from top to bottom of the gradient color feature prepared in this example
2, Fe
2o3 content scope is as follows: ErO
2(0.60wt% ~ 1.20wt%), Fe
2o
3(0.12wt% ~ 0.26wt%), after the various powders of the present embodiment all add dehydrated alcohol ball milling 24h with respective component proportion, then obtains dry 12h at 100 DEG C after.
Embodiment 3:
By powder B, C, D respectively in massfraction ratio: 17%:9%:74%; 18%:11%:71%; 19%:13%:68%; 20%:15%:65%; 21%:17%:62%; 22%:19%:59%; 23%:21%:56%; 24%:23%:53%; 25%:25%:50% mixes, and obtains the powder enamel coating of 9 kinds of different colours, and the total mass mark difference wherein containing B, C in adjacent enamel coating is 3%, and every layer of ulking thickness is 13mm.
By said sequence, 9 kinds of powders are successively added layering superposition in shaping mould, predry pressure pressure 1Mpa, dry-pressing formed pressure 10MPa, dwell time 18s.Then cold isostatic compaction is carried out, isostatic cool pressing pressure 80MPa, dwell time 120s.The idiosome prepared is put into sintering oven and is carried out presintering, sintering temperature 550 DEG C, soaking time 120min.Carry out plain embryo engraving subsequently, ensure the surface smoothness of plain embryo, size meets the demands.Finally finally sinter, sintering temperature 1300 DEG C, soaking time 80min, obtain the dental zirconium oxide pottery with gradient color feature.Dental zirconium oxide pottery each layer CeO from top to bottom of the gradient color feature prepared in this example
2, Fe
2o
3content scope is as follows: CeO
2(3.40wt% ~ 5.00wt%), Fe
2o
3(0.11wt% ~ 0.30wt%), after the various powders of the present embodiment all add dehydrated alcohol ball milling 24h with respective component proportion, then obtains dry 12h at 100 DEG C after.
Embodiment 4:
By powder C, D respectively in massfraction ratio: 5%:95%; 7%:93%; 9%:91%; 11%:89%; 13%:87%; 15%:85%; 17%:83%; 19%:81%; 21%:79%; 23%:77%; 25%:75% mixes, and obtains the powder enamel coating of 11 kinds of different colours, and the massfraction difference wherein containing C in adjacent enamel coating is 2%, and every layer of ulking thickness is 1/mm.
By said sequence, 11 kinds of powders are successively added layering superposition in shaping mould, predry pressure pressure is 1.5MPa, dry-pressing formed pressure 12MPa, dwell time 20s.Then cold isostatic compaction is carried out, isostatic cool pressing pressure 180MPa, dwell time 110s.The idiosome prepared is put into sintering oven and is carried out presintering, sintering temperature 950 DEG C, soaking time 120min.Carry out plain embryo engraving subsequently, ensure the surface smoothness of plain embryo, size meets the demands.Finally finally sinter, sintering temperature 1500 DEG C, soaking time 100min, obtain the dental zirconium oxide pottery with gradient color feature.Dental zirconium oxide pottery each layer Fe from top to bottom of the gradient color feature prepared in this example
2o
3content scope is as follows: Fe
2o
3(0.06wt% ~ 0.30wt%), after the various powders of the present embodiment all add dehydrated alcohol ball milling 24h with respective component proportion, then obtains dry 12h at 100 DEG C after.
Embodiment 5:
By powder B, D respectively in massfraction ratio: 13%:87%; 18%:82%; 23%:77%; 28%:72%; 33%:67%; 38%:62%; 43%:57% mixes the powder enamel coating obtaining 7 kinds of different colours, and the total mass mark difference wherein containing B in adjacent enamel coating is 5%, and every layer of ulking thickness is 18mm.
By said sequence, 7 kinds of powders are successively added layering superposition in shaping mould, predry pressure pressure is 1.8MPa, dry-pressing formed pressure 15MPa, dwell time 30s.Then cold isostatic compaction is carried out, isostatic cool pressing pressure 200MPa, dwell time 120s.The idiosome prepared is put into sintering oven and is carried out presintering, sintering temperature 1010 DEG C, soaking time 120min.Carry out plain embryo engraving subsequently, ensure the surface smoothness of plain embryo, size meets the demands.Finally finally sinter, sintering temperature 1550 DEG C, soaking time 120min, obtain the dental zirconium oxide pottery with gradient color feature.Dental zirconium oxide pottery each layer CeO from top to bottom of the gradient color feature prepared in this example
2content scope is as follows: CeO
2(2.60wt% ~ 8.60wt%), after the various powders of the present embodiment all add dehydrated alcohol ball milling 24h with respective component proportion, then obtains dry 12h at 100 DEG C after.
Embodiment 6:
By powder A, D respectively in massfraction ratio: 1%:99%; 7%:93%; 13%:87%; 19%:81%; 25%:75%; 31%:69%; 37%:63% mixes, and obtains the powder enamel coating of 7 kinds of different colours, and the total mass mark difference wherein containing A in adjacent enamel coating is 6%, and every layer of ulking thickness is 20mm.
By said sequence, 7 kinds of powders are successively added layering superposition in shaping mould, predry pressure pressure is 2MPa, dry-pressing formed pressure 16MPa, dwell time 30s.Then cold isostatic compaction is carried out, isostatic cool pressing pressure 170MPa, dwell time 120s.The idiosome prepared is put into sintering oven and is carried out presintering, sintering temperature 1000 DEG C, soaking time 110min.Carry out plain embryo engraving subsequently, ensure the surface smoothness of plain embryo, size meets the demands.Finally finally sinter, sintering temperature 1500 DEG C, soaking time 120min, obtain the dental zirconium oxide pottery with gradient color feature.Dental zirconium oxide pottery each layer ErO from top to bottom of the gradient color feature prepared in this example
2content scope is as follows: ErO
2(0.05wt% ~ 1.85wt%), after two kinds of powders of the present embodiment all add dehydrated alcohol ball milling 24h with respective component proportion, then obtains dry 12h at 100 DEG C after.
Above-mentioned specific embodiment is used for explaining and the present invention is described, instead of limits the invention, and in the protection domain of spirit of the present invention and claim, any amendment make the present invention and change, all fall into protection scope of the present invention.
Claims (10)
1. one kind of multiple oxide-doped gradient color zirconium white dental prosthesis, it is characterized in that: to be mixed by different mass mark at each enamel coating by more than one in three kinds of dental zirconium oxides pottery mixed powder A, B, C and powder D and be formed by stacking, mixed powder A, mixed powder B, mixed powder C are respectively ErO
2doped zirconia porcelain powder raw material, CeO
2doped zirconia porcelain powder raw material, Fe
2o
3doped zirconia porcelain powder raw material, powder D is non-impurity-doped zirconium oxide porcelain powder raw material.
2. one kind of multiple oxide-doped gradient color zirconium white dental prosthesis according to claim 1, is characterized in that:
Described dental zirconium oxide pottery mixed powder A is grouped into by the one-tenth of following quality proportioning: ErO
2≤ 5.0wt%, Y
2o
3be 5.4 wt%, Al
2o
3be 0.2 ~ 0.4 wt%, Na
2o≤0.01 wt%, SiO
2≤ 0.02 wt%, all the other are ZrO
2;
Described dental zirconium oxide pottery mixed powder B is grouped into by the one-tenth of following quality proportioning: CeO
2≤ 20.0 wt%, Y
2o
3be 5.4 wt%, Al
2o
3be 0.2 ~ 0.4 wt%, Na
2o≤0.01wt%, SiO
2≤ 0.02 wt%, all the other are ZrO
2;
Described dental zirconium oxide pottery mixed powder C is grouped into by the one-tenth of following quality proportioning: Fe
2o
3≤ 1.2 wt%, Y
2o
3be 5.4 wt%, Al
2o
3be 0.2 ~ 0.4 wt%, Na
2o≤0.01 wt%, SiO
2≤ 0.02 wt%, all the other are ZrO
2;
Described powder D is grouped into by the one-tenth of following quality proportioning: Y
2o
3be 5.4 wt%, Al
2o
3be 0.2 ~ 0.4 wt%, Na
2o≤0.01 wt%, SiO
2≤ 0.02 wt%, Fe
2o
3≤ 0.01wt%, all the other are ZrO
2.
3. one kind of multiple oxide-doped gradient color zirconium white dental prosthesis according to claim 1, it is characterized in that: each enamel coating described is added in shaping mould according to the successively layering of sintering color order from shallow to deep and becomes multilayered structure through predry swaging, multiple-layer stacked is complete obtains the raw embryo of gradient color dummy through dry-pressing formed, isostatic cool pressing, and the number of plies is 5-11.
4. one kind of multiple oxide-doped gradient color zirconium white dental prosthesis according to claim 1, it is characterized in that: in every layer of described enamel coating, massfraction≤37% of mixed powder A, massfraction≤43% of mixed powder B, massfraction≤25% of mixed powder C, exceed this restriction, the dummy obtained differs comparatively large with natural creamy white, the color of regulation and control loses using value.
5. one kind of multiple oxide-doped gradient color zirconium white dental prosthesis according to claim 1, it is characterized in that: difference≤10% of mixed powder A, B and C total mass mark contained by adjacent described enamel coating, and every layer of enamel coating ulking thickness is that 10 ~ 20mm is to ensure that between each layer, color transition is level and smooth, even.
6. the preparation method of one kind of multiple oxide-doped gradient color zirconium white dental prosthesis, is characterized in that comprising the following steps:
1) prepare mixed powder A, B, C and powder D, mixed powder A, mixed powder B, mixed powder C are respectively ErO
2doped zirconia porcelain powder raw material, CeO
2doped zirconia porcelain powder raw material, Fe
2o
3doped zirconia porcelain powder raw material, powder D is non-impurity-doped zirconium oxide porcelain powder raw material;
2) prepare enamel coating successively, one or more in mixed powder A, B, C and powder D mix by each enamel coating; Each enamel coating is successively added layering superposition in shaping mould according to sintering color depth order from shallow to deep, it is molded that each enamel coating first carries out predry, the preformed pressure of every one deck is 0.5 ~ 2Mpa, carry out dry-pressing formed after multiple-layer stacked, its pressure is 5 ~ 20MPa, dwell time 5 ~ 30s, obtains the zirconium white dentistry ceramic green embryo of color gradual change;
3) by zirconium white dentistry ceramic green embryo cold isostatic compaction again, its pressure is 80 ~ 200MPa, dwell time 60s ~ 120s; Obtain the raw embryo of zirconium white;
4) raw for zirconium white embryo is put into sintering oven and carry out presintering, the sintering temperature of presintering is 550 ~ 1010 DEG C, soaking time 90 ~ 120min, obtains the zirconium white element embryo of color gradual change;
5) then carry out plain embryo engraving, plain embryo engraving comprises plain embryo correction, size control, polishing and cleans;
6) finally sinter, sintering temperature is 1300 ~ 1550 DEG C, soaking time 60 ~ 120min, obtains the zirconium white dentistry ceramic sintered bodies of color gradual change.
7. the preparation method of one kind of multiple oxide-doped gradient color zirconium white dental prosthesis according to claim 6, is characterized in that:
After described mixed powder A, B, C and powder D all add dehydrated alcohol ball milling 24h with respective component proportion, then obtain dry 12h at 100 DEG C after.
8. the preparation method of one kind of multiple oxide-doped gradient color zirconium white dental prosthesis according to claim 6, is characterized in that:
Described dental zirconium oxide pottery mixed powder A is grouped into by the one-tenth of following quality proportioning: ErO
2≤ 5.0wt%, Y
2o
3be 5.4 wt%, Al
2o
3be 0.2 ~ 0.4 wt%, Na
2o≤0.01 wt%, SiO
2≤ 0.02 wt%, all the other are ZrO
2;
Described dental zirconium oxide pottery mixed powder B is grouped into by the one-tenth of following quality proportioning: CeO
2≤ 20.0 wt%, Y
2o
3be 5.4 wt%, Al
2o
3be 0.2 ~ 0.4 wt%, Na
2o≤0.01wt%, SiO
2≤ 0.02 wt%, all the other are ZrO
2;
Described dental zirconium oxide pottery mixed powder C is grouped into by the one-tenth of following quality proportioning: Fe
2o
3≤ 1.2 wt%, Y
2o
3be 5.4 wt%, Al
2o
3be 0.2 ~ 0.4 wt%, Na
2o≤0.01 wt%, SiO
2≤ 0.02 wt%, all the other are ZrO
2;
Described powder D is grouped into by the one-tenth of following quality proportioning: Y
2o
3be 5.4 wt%, Al
2o
3be 0.2 ~ 0.4 wt%, Na
2o≤0.01 wt%, SiO
2≤ 0.02 wt%, Fe
2o
3≤ 0.01 wt%, all the other are ZrO
2.
9. the preparation method of one kind of multiple oxide-doped gradient color zirconium white dental prosthesis according to claim 6, it is characterized in that: in every layer of described enamel coating, massfraction≤37% of mixed powder A, massfraction≤43% of mixed powder B, massfraction≤25% of mixed powder C.
10. the preparation method of one kind of multiple oxide-doped gradient color zirconium white dental prosthesis according to claim 6, it is characterized in that: difference≤10% of mixed powder A, B and C total mass mark contained by adjacent described enamel coating, and every layer of enamel coating ulking thickness is that 10 ~ 20mm is to ensure that between each layer, color transition is level and smooth, even.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105584161A (en) * | 2015-12-22 | 2016-05-18 | 山东新华医疗器械股份有限公司 | Light transmission gradient color zirconia material and preparing technology thereof |
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