Method and apparatus for preparing a ceramic dental restoration in one appointment
US-9597265-B2 · Mar 21, 2017 · US
Methods for enhancing optical and strength properties in ceramic bodies having applications in dental restorations
US11890358B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11890358-B2 |
| Application number | US-202217588310-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 30, 2022 |
| Priority date | Mar 16, 2017 |
| Publication date | Feb 6, 2024 |
| Grant date | Feb 6, 2024 |
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Abstract
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A method for enhancing optical properties of sintered, zirconia ceramic bodies and zirconia ceramic dental restorations is provided. The porous or pre-sintered stage of a ceramic body is treated with two different yttrium-containing compositions and sintered, resulting in sintered ceramic bodies having enhanced optical properties. The enhanced optical properties may be substantially permanent, remaining for the useful life of the sintered ceramic body.
First claim
Opening claim text (preview).
We claim: 1. A kit comprising at least two aqueous yttrium-containing compositions to apply to a porous ceramic body for enhancing optical properties in a sintered dental restoration comprising, a) a first aqueous yttrium-containing composition comprising between 5 wt % and 35 wt % yttrium chloride based on the total weight of the first composition, and a first colorant comprising 0.05 wt % to 2 wt % of a metal-containing component as a coloring agent; and b) a second aqueous yttrium-containing composition comprising between 40 wt % and 70 wt % yttrium chloride based on the total weight of the second composition. 2. The kit of claim 1 , wherein the first colorant comprises a metal salt containing at least one metal selected from terbium, chromium, and manganese. 3. The kit of claim 1 , wherein second aqueous yttrium-containing composition further comprises a second colorant. 4. The kit of claim 3 , wherein the second colorant comprises a cobalt-containing salt. 5. The kit of claim 1 , wherein the second aqueous yttrium-containing composition comprises from 0.01 wt % to 0.2 wt % of a cobalt-containing component based on the total weight of the second aqueous yttrium-containing composition. 6. The kit of claim 1 , wherein the second aqueous yttrium-containing composition comprises citric acid. 7. A kit comprising at least two aqueous yttrium-containing compositions to apply to a porous ceramic body for enhancing optical properties in a sintered dental restoration comprising, a) a first aqueous yttrium-containing composition comprising between 5 wt % and 35 wt % yttrium chloride based on the total weight of the first composition, and a first colorant comprising a metal-containing component as a coloring agent; and b) a second aqueous yttrium-containing composition comprising between 40 wt % and 70 wt % yttrium chloride based on the total weight of the second composition, and a second colorant comprising from 0.01 wt % to 0.2 wt % of a cobalt-containing component based on the total weight of the second aqueous yttrium-containing composition. 8. The kit of claim 7 , wherein the first colorant comprises a metal salt containing at least one metal selected from terbium, chromium, and manganese. 9. The kit of claim 7 , wherein the first colorant comprises 0.05 wt % to 2 wt % of the metal-containing component. 10. The kit of claim 7 , wherein the second aqueous yttrium-containing composition comprises citric acid.
Assignees
Inventors
Classifications
- A61K6/78Primary
Pigments · CPC title
comprising zirconium oxide · CPC title
comprising rare earth metal oxides · CPC title
performed by spraying · CPC title
with ovens · CPC title
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Frequently asked questions
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- What does patent US11890358B2 cover?
- A method for enhancing optical properties of sintered, zirconia ceramic bodies and zirconia ceramic dental restorations is provided. The porous or pre-sintered stage of a ceramic body is treated with two different yttrium-containing compositions and sintered, resulting in sintered ceramic bodies having enhanced optical properties. The enhanced optical properties may be substantially permanent, …
- Who is the assignee on this patent?
- Glidewell James R Dental Ceramics Inc
- What technology area does this patent fall under?
- Primary CPC classification A61K6/78. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Feb 06 2024 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 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).