Lithium silicate glasses or glass ceramics, method for production thereof and use thereof
US-2015376053-A1 · Dec 31, 2015 · US
Lithium silicate materials
US2021238082A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021238082-A1 |
| Application number | US-202117233898-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 19, 2021 |
| Priority date | Feb 8, 2005 |
| Publication date | Aug 5, 2021 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
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 is: 1 . A lithium silicate glass ceramic for dental restorations, wherein the lithium silicate glass ceramic comprises: SiO 2 from 64 to 75 wt %; and a main crystalline phase of lithium disilicate; wherein the lithium silicate glass ceramic has a biaxial flexural strength of 450-820 MPa and is formed in the shape of a blank suitable for producing a dental restoration. 2 . The lithium silicate glass ceramic of claim 1 , comprising 64 to 73 wt % of SiO 2 . 3 . The lithium silicate glass ceramic of claim 1 , wherein the blank is shaped into a dental restoration by machining or pressing. 4 . The lithium silicate glass ceramic of claim 3 , wherein machining comprises grinding, trimming, or milling. 5 . The lithium silicate glass ceramic of claim 1 , 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.
Assignees
Inventors
Classifications
characterised by the material or composition, e.g. ceramics, surface layer, metal alloy (use of specific materials A61K6/00) · CPC title
Tooth crowns; Making thereof · CPC title
Glass-ceramic composites · CPC title
Cosmetic aspects, e.g. inlays; Determination of the colour (A61C19/10 takes precedence) · CPC title
Methods or devices for making crowns · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2021238082A1 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 Thu Aug 05 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).