Monolithic Support Structure for Use in Implant-Supported Dental Devices and Methods of Making the Same
US-2016331494-A1 · Nov 17, 2016 · US
Al2O3-FREE LITHIUM SILICATE GLASS COMPOSITION
US2017281473A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017281473-A1 |
| Application number | US-201715475494-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 31, 2017 |
| Priority date | Mar 31, 2016 |
| Publication date | Oct 5, 2017 |
| Grant date | — |
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Abstract
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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 Al 2 O 3 -free dental lithium silicate glass composition including the following components: SiO 2 : 60.0 to 80.0% by weight, Li 2 O: 10.0 to 17.0% by weight, K 2 O: 0.5 to 10.0% by weight, ZrO 2 : 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.
First claim
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1 . An Al 2 O 3 -free dental lithium silicate glass composition comprising the following components: SiO 2 : 60.0 to 80.0% by weight Li 2 O: 10.0 to 17.0% by weight K 2 O: 0.5 to 10.0% by weight ZrO 2 : 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. 2 . The Al 2 O 3 -free dental lithium silicate glass composition according to claim 1 , wherein, the Al 2 O 3 -free dental lithium silicate glass composition comprises the following components: SiO 2 : 60.0 to 75.0% by weight Li 2 O: 12.0 to 17.0% by weight K 2 O: 2.0 to 8.0% by weight ZrO 2 : 0.1 to 5.0% by weight a nucleating agent: 1.0 to 5.0% by weight a glass stabilizer: 0.5 to 7.0% by weight, and, a colorant: 0.5 to 10.0% by weight. 3 . The Al 2 O 3 -free dental lithium silicate glass composition according to claim 1 , wherein, the Al 2 O 3 -free dental lithium silicate glass composition includes P 2 O 5 as the nucleating agent. 4 . The Al 2 O 3 -free dental lithium silicate glass composition according to claim 1 , wherein, the Al 2 O 3 -free dental lithium silicate glass composition includes CeO 2 as the colorant. 5 . A dental lithium silicate glass ceramic comprising a heat treated product of the glass composition according to claim 1 , wherein the precipitate of a lithium metasilicate crystal and/or a lithium disilicate crystal is included. 6 . A dental crown restorative material comprising a thermocompression molded article, a machined product and/or a built-up/fired product of the dental lithium silicate glass ceramic according to claim 5 . 7 . The Al 2 O 3 -free dental lithium silicate glass composition according to claim 2 , wherein, the Al 2 O 3 -free dental lithium silicate glass composition includes P 2 O 5 as the nucleating agent. 8 . The Al 2 O 3 -free dental lithium silicate glass composition according to claim 2 , wherein, the Al 2 O 3 -free dental lithium silicate glass composition includes CeO 2 as the colorant. 9 . The Al 2 O 3 -free dental lithium silicate glass composition according to claim 3 , wherein, the Al 2 O 3 -free dental lithium silicate glass composition includes CeO 2 as the colorant. 10 . The Al 2 O 3 -free dental lithium silicate glass composition according to claim 7 , wherein, the Al 2 O 3 -free dental lithium silicate glass composition includes CeO 2 as the colorant. 11 . A dental lithium silicate glass ceramic comprising a heat treated product of the glass composition according to claim 2 , wherein the precipitate of a lithium metasilicate crystal and/or a lithium disilicate crystal is included. 12 . A dental crown restorative material comprising a thermocompression molded article, a machined product and/or a built-up/fired product of the dental lithium silicate glass ceramic according to claim 11 . 13 . A dental lithium silicate glass ceramic comprising a heat treated product of the glass composition according to claim 3 , wherein the precipitate of a lithium metasilicate crystal and/or a lithium disilicate crystal is included. 14 . A dental crown restorative material comprising a thermocompression molded article, a machined product and/or a built-up/fired product of the dental lithium silicate glass ceramic according to claim 13 . 15 . A dental lithium silicate glass ceramic comprising a heat treated product of the glass composition according to claim 4 , wherein the precipitate of a lithium metasilicate crystal and/or a lithium disilicate crystal is included. 16 . A dental crown restorative material comprising a thermocompression molded article, a machined product and/or a built-up/fired product of the dental lithium silicate glass ceramic according to claim 15 .
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- What does patent US2017281473A1 cover?
- 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 Al 2 O 3 -free dental lithium silicate glass composition including the following components: SiO 2 : 60.0 to 80.0% by weight, Li 2 O: 10.…
- Who is the assignee on this patent?
- Shofu Inc
- What technology area does this patent fall under?
- Primary CPC classification A61K6/802. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Thu Oct 05 2017 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).