Dental filling-material and method for its preparation
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United States of America Patent
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Jan 9, 1990
Grant Date -
N/A
app pub date -
Jan 24, 1989
filing date -
Feb 10, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A dental-filling material with hardnesses exceeding 100 HV for gold-condensation is prepared from a gold-alloy powder of which the alloying components are metals resulting in hardening gold alloys and which are simultaneously soluble in nitric acid. A rough, pure gold layer on the surface of the powder particles is obtained by treatment with nitric acid.
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