Dental prosthetic joining process by casting-on and primary moulds therefor
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United States of America Patent
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Jun 21, 1994
Grant Date -
N/A
app pub date -
Jan 17, 1992
filing date -
May 20, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a dental prosthetic casting-on process, in which a secondary part made of metal is cast-on to a primary part made of metal, a primary part made from an oxide-forming metal alloy may be used if the latter's casting-on surface is alloyed, prior to casting-on, with a reducing metalloid. In this regard, boron, silicon or phosphorus, for example, can be made to diffuse into the surface lattice of the primary part. A primary part made from an oxide-forming dental alloy and suitable for such a casting-on process exhibits in its casting-on surface an enhanced boron or silicon or phosphorus content.
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