Claims
- 1. A particulate dental amalgam alloy consisting of spherical particles formed of a dental amalgam alloy consisting essentially of, as alloying ingredients substantially uniformly distributed through each particle, from about 40 to 50% by weight silver, from about 20 to 30% by weight tin, from about 15 to 30% by weight copper, from 0 to about 1% by weight zinc and from about 0.03 to 0.5% by weight platinum, said particles having a particle size in the range from 1 to 55 microns with a majority of the particles being less than 35 microns in particle size.
- 2. A particulate dental amalgam alloy consisting of spherical particles formed of a dental amalgam alloy consisting essentially of, as alloying ingredients substantially uniformly distributed through each particle, from about 40 to 50% by weight silver, from about 20 to 30% by weight tin, from about 15 to 30% by weight copper, and from about 0.03 to 0.1% by weight platinum, said particles having a particle size in the range from 1 to 55 microns with a majority of the particles being less than 35 microns in particle size.
- 3. A particulate dental amalgam alloy as claimed in claim 2, amalgamated with mercury in a weight ratio of alloy to mercury of about 10:8.5 or less as a dental amalgam.
- 4. A particulate dental amalgam alloy according to claim 2, amalgamated with mercury in a weight ratio of alloy to mercury of about 10:8 or less to form a dental amalgam.
- 5. A particulate dental amalgam alloy according to claim 1, in which the majority of the particles have a particle size in the range from 5 to 30 microns.
Priority Claims (2)
Number |
Date |
Country |
Kind |
PG0209 |
Jul 1983 |
AUX |
|
PG0594 |
Aug 1983 |
AUX |
|
Parent Case Info
This is a division of application Ser. No. 626,722, filed July 2, 1984, now U.S. Pat. No. 4,686,082.
US Referenced Citations (3)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0033628 |
Aug 1981 |
EPX |
56-15453 |
Apr 1981 |
JPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
626722 |
Jul 1984 |
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