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 method for producing a dental prosthesis comprising:
- a melting step of melting a material comprising 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, and no less than 0.1 mass % and no more than 10.0 mass % of ZrO2;
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 blank by machining.
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Accused Products
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
6 Claims
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1. A method for producing a dental prosthesis comprising:
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a melting step of melting a material comprising 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, and no less than 0.1 mass % and no more than 10.0 mass % of ZrO2; 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 blank by machining. - View Dependent Claims (2, 4)
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3. A method for producing a lithium disilicate blank for a dental prosthesis, the blank to be machined into a shape of a dental prosthesis, the method comprising:
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a melting step of melting a material comprising 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, and no less than 0.1 mass % and no more than 10.0 mass % of ZrO2; a glass blank production step of cooling to solidify the molten material to obtain a glass blank; and a lithium disilicate blank production step of heating the glass blank to obtain a lithium disilicate blank whose main crystalline phase is lithium disilicate. - View Dependent Claims (5)
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6. A lithium disilicate blank for a dental prosthesis, wherein the lithium disilicate blank comprises 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, no less than 5.1 mass % and no more than 10.0 mass % of Al2O3, and no less than 3.1 mass % and no more than 10.0 mass % of ZrO2.
Specification