Al2O3-FREE LITHIUM SILICATE GLASS COMPOSITION
AssigneeShofu Inc.
InventorsDaisuke TAKEUCHI, Mitsuji Teramae
Life of this patent
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Abstract
To provide a dental lithium silicate glass composition capable of providing a dental lithium silicate glass ceramic capable of efficiently precipitating the main crystals (lithium disilicate and/or lithium metasilicate) even after heat treatment. To provide a Al2O3-free dental lithium silicate glass composition including the following components: SiO2: 60.0 to 80.0% by weight, Li2O: 10.0 to 17.0% by weight, K2O: 0.5 to 10.0% by weight, ZrO2: 0.0 to 5.0% by weight, a nucleating agent: 1.0 to 6.0% by weight, a glass stabilizer: 0.0 to 8.0% by weight and a colorant: 0.0 to 10.0% by weight.
Claims16
An Al2O3-free dental lithium silicate glass composition comprising the following components:
- SiO2:
- 60.0 to 80.0% by weight
- Li2O:
- 10.0 to 17.0% by weight
- K2O:
- 0.5 to 10.0% by weight
- ZrO2:
- 0.0 to 5.0% by weight
- a nucleating agent:
- 1.0 to 6.0% by weight
- a glass stabilizer:
- 0.0 to 8.0% by weight, and,
- a colorant:
- 0.0 to 10.0% by weight.
Dependencies are inferred from the claim text.