Method to prepare a zirconia sintered body suitable for dental use
AssigneeKuraray Noritake Dental Inc.
InventorShinichiro KATO
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Abstract
A method to produce a zirconia molded body and a dental mill blank is provided. According to the method a decrease of the translucency of a zirconia sintered body upon firing can be reduced even when the cooling solvent used for wet processing of the zirconia molded body or dental mill blank by a dental CAD/CAM system is contaminated. This enables more convenient fabrication of a zirconia sintered body. The present disclosure relates to a zirconia molded body comprising zirconia; yttria; and a binder, and having an open porosity of 25% or less prepared according to the method.
Claims8
A method for producing a zirconia sintered body, comprising:
- wet processing a zirconia molded body comprising yttria and a binder;
- and
- sintering the wet processed zirconia molded body to obtain the zirconia sintered body,
- wherein
- the yttria is capable of inhibiting a phase transformation of the zirconia,
- a content of the binder in the zirconia molded body is from 4 to 10 mass %, and
- an open porosity of the zirconia molded body is 25% or less.
Dependencies are inferred from the claim text.