Lithium silicate glasses or glass ceramics, method for production thereof and use thereof
US-2015376053-A1 · Dec 31, 2015 · US
Lithium silicate materials
US10981823B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10981823-B2 |
| Application number | US-201916284563-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 25, 2019 |
| Priority date | Feb 8, 2005 |
| Publication date | Apr 20, 2021 |
| Grant date | Apr 20, 2021 |
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- Title
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Abstract
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Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.
First claim
Opening claim text (preview).
What is claimed: 1. A lithium silicate glass ceramic for dental restorations which comprises a main crystalline phase comprising lithium metasilicate, wherein the lithium metasilicate crystals comprise lamellar or platelet crystals and wherein the lithium glass ceramic comprises Li 2 O from 13 to 17 wt %. 2. The lithium silicate glass ceramic of claim 1 , wherein the lithium metasilicate forms more than 50 and up to 80 vol. % of the lithium silicate glass ceramic. 3. The lithium silicate glass ceramic of claim 1 , wherein the glass ceramic is in form of a blank or a dental restoration. 4. The lithium silicate glass ceramic of claim 3 , wherein the blank is shaped into a dental restoration by machining or pressing. 5. The lithium silicate glass ceramic of claim 4 , wherein machining comprises grinding, trimming or milling. 6. The lithium silicate glass ceramic of claim 4 , wherein the dental restoration is an inlay, an onlay, a bridge, an abutment, a facing, a veneer, a facet, a crown, a partial crown, a framework or a coping. 7. The lithium silicate glass ceramic of claim 1 , comprising SiO 2 , Li 2 O and a nucleating agent.
Assignees
Inventors
Classifications
Pigments · CPC title
containing PbO, SnO2, B2O3 · CPC title
Processes · CPC title
Process · CPC title
containing SiO2, Al2O3 and MgO as main constituents · CPC title
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Frequently asked questions
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- What does patent US10981823B2 cover?
- Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.
- Who is the assignee on this patent?
- Ivoclar Vivadent Ag
- What technology area does this patent fall under?
- Primary CPC classification C03C10/0027. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 20 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).