Photocurable thermochromic adhesive, adhesive composition and preparation as well as application thereof
US-2022282140-A1 · Sep 8, 2022 · US
Temperature indicating endodontic obturation material
US9980883B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9980883-B2 |
| Application number | US-201615092101-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 6, 2016 |
| Priority date | Apr 7, 2015 |
| Publication date | May 29, 2018 |
| Grant date | May 29, 2018 |
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Abstract
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A gutta-percha composition for filling a tooth root canal includes a temperature indicating component, such that the user has a visual indication that the material is ready for placement in the prepared canal. The material may include a thermochromatic dye, bismuth oxide or the like, in an otherwise conventional obturation material.
First claim
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The invention claimed is: 1. A composition for filling a tooth root canal comprising: a gutta-percha component; a first temperature indicating component; and a second temperature indicating component; wherein said first and said second temperature indicating components provide temperature indication at at least two different temperature ranges from each other; and wherein said first temperature indicating component changes color when it reaches a temperature of from about 40 to about 50 degrees C., and said second temperature indicating component changes color when it reaches a temperature of from about 60 to about 70 degrees C. 2. A composition as in claim 1 , wherein said gutta-percha component includes 1,4-polyisoprene. 3. A composition as in claim 1 wherein said thermochromic dye is present in an amount of from about 1 to about 70 percent by weight of said composition. 4. A composition as in claim 1 , wherein said second temperature indicating component is bismuth oxide. 5. A composition for filling a tooth root canal comprising: a gutta-percha component, wherein said gutta-percha component includes 1,4-polyisoprene; a thermochromic dye being present in an amount of from about 1 to about 70 percent by weight of said composition; and a radiopacifier; wherein said thermochromic dye changes color when it reaches a temperature of from about 40 to about 50 degrees C. or from about 60 to about 70 degrees C. 6. A composition as in claim 1 , further comprising a radiopacifier.
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Frequently asked questions
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- What does patent US9980883B2 cover?
- A gutta-percha composition for filling a tooth root canal includes a temperature indicating component, such that the user has a visual indication that the material is ready for placement in the prepared canal. The material may include a thermochromatic dye, bismuth oxide or the like, in an otherwise conventional obturation material.
- Who is the assignee on this patent?
- Dentsply Sirona Inc
- What technology area does this patent fall under?
- Primary CPC classification A61K6/68. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue May 29 2018 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).