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Multiple-oxide-doped gradient-color zirconia dental prosthesis and preparation method thereof
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.
Multiple-oxide-doped gradient-color zirconia dental prosthesis and preparation method thereof
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.
Multiple-oxide-doped gradient-color zirconia dental prosthesis and preparation method thereof
SUN SHUMING (author) / TIAN FENG (author) / WANG JIABANG (author)
2015-08-19
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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