Method for producing dental prosthesis, method for producing lithium disilicate blank for dental prosthesis and lithium disilicate blank for dental prosthesis
First Claim
1. A lithium disilicate blank for a dental prosthesis to be machined into a shape of a dental prosthesis, the lithium disilicate blank comprising no less than 70.6 mass % and no more than 80.0 mass % of SiO2, no less than 10.0 mass % and no more than 20.0 mass % of Li2O, and no less than 5.1 mass % and no more than 10.0 mass % of Al2O3, and no less than 0.1 mass % and no more than 10.0 mass % of ZrO2, not comprising Ta2O5.
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Abstract
Provided is a method for quickly producing a dental prosthesis with a good accuracy.
The method for producing a dental prosthesis including: a melting step of melting a material including no less than 60.0 mass % and no more than 80.0 mass % of SiO2, no less than 10.0 mass % and no more than 20.0 mass % of Li2O, and no less than 5.1 mass % and no more than 10.0 mass % of Al2O3; a glass blank production step of cooling to solidify the molten material to obtain a glass blank; a lithium disilicate blank production step of heating the glass blank to obtain a lithium disilicate blank whose main crystalline phase is lithium disilicate; and a processing step of processing the lithium disilicate by machining.
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Citations
4 Claims
- 1. A lithium disilicate blank for a dental prosthesis to be machined into a shape of a dental prosthesis, the lithium disilicate blank comprising no less than 70.6 mass % and no more than 80.0 mass % of SiO2, no less than 10.0 mass % and no more than 20.0 mass % of Li2O, and no less than 5.1 mass % and no more than 10.0 mass % of Al2O3, and no less than 0.1 mass % and no more than 10.0 mass % of ZrO2, not comprising Ta2O5.
Specification