Dentistry – Orthodontics – Bracket
Patent
1991-07-18
1993-04-20
Weiss, John G.
Dentistry
Orthodontics
Bracket
433 17, 433 23, A61C 300
Patent
active
052038041
ABSTRACT:
A dental article is coated with a hard carbon coating of polycrystalline diamond, diamond-like amorphous hydrogen-free carbon, diamond-like hydrogenated amorphous carbon, or combinations thereof. The hard carbon coating presents a barrier to nickel and chromium that might otherwise diffuse from an underlying metal substrate, and as such is useful for patients exhibiting sensitivity to nickel and chromium.
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Adam Randall E.
Nikutowski Enrique A.
O'Neill David G.
Christoff James D.
Griswold Gary L.
Kirn Walter N.
Lucchesi Nicholas D.
Minnesota Mining and Manufacturing Company
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