EMD formulation comprising PGA
US-9789190-B2 · Oct 17, 2017 · US
Dental root canal filling material having improved thermal conductive characteristics
US10357434B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10357434-B2 |
| Application number | US-201514945374-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 18, 2015 |
| Priority date | May 21, 2012 |
| Publication date | Jul 23, 2019 |
| Grant date | Jul 23, 2019 |
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Abstract
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A root canal filling material incorporates heat conductive particles of sub-micron size dispersed in a heat flowable matrix of endodontic filling material. The particle size is 1 micron or less (e.g., 0.5 to 1 micron, or nanoparticles of 100 nm or less). The addition of high heat conductive particles in the heat flowable matrix material improves the overall heat conductivity of the root canal filling material. During root canal treatment procedure, the filling material softens more thoroughly to fill the root canal apex and to form a seal of higher integrity at the root canal apex area, at a significantly lower operating temperature. The inventive filling material may be provided in bulk (e.g., pellet form) for use with an injection tool that heats and injects softened filling material into root canal cavities, or pre-shaped in the form of dental root canal filling cones (or points).
First claim
Opening claim text (preview).
I claim: 1. A root canal filling material, comprising: a matrix comprising a heat flowable material, wherein the heat flowable material is an trans-polyisoprene based material; and heat conductive particles dispersed in the heat flowable material of the matrix, wherein the size of the particles is about 0.5 to less than 1 micron. 2. The material as in claim 1 , wherein the particles are metallic. 3. The material as in claim 2 , wherein the particles comprise silver. 4. The material as in claim 1 , wherein the particles are non-metallic. 5. The material as in claim 4 , wherein the particles comprise zinc oxide or graphite. 6. The material as in claim 1 , wherein the particles are about 0.1 to 5% weight of the material. 7. The material as in claim 1 , wherein the particles has heat conductivity higher than heat conductivity of the heat flowable material. 8. A root canal filling cone, comprising the root canal filling material of claim 1 , the cone having a taper angle ranging from 5-10 degrees. 9. The material as in claim 2 , wherein the particles are selected from the group consisting of titanium and gold. 10. The material as in claim 4 , wherein the particles are selected from the group consisting of diamond and Magnesium Silicate.
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- What does patent US10357434B2 cover?
- A root canal filling material incorporates heat conductive particles of sub-micron size dispersed in a heat flowable matrix of endodontic filling material. The particle size is 1 micron or less (e.g., 0.5 to 1 micron, or nanoparticles of 100 nm or less). The addition of high heat conductive particles in the heat flowable matrix material improves the overall heat conductivity of the root canal f…
- Who is the assignee on this patent?
- Tulsa Dental Products Llc, Dentsply Sirona Inc
- What technology area does this patent fall under?
- Primary CPC classification A61K6/54. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Jul 23 2019 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).