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US 4,784,606 AGranted
Orthodontic brackets made from ion exchange strengthened glass
AssigneeJohnson & Johnson Consumer Products, Inc.
InventorsRobin M. F. Jones, Carl Panzera, Robert D. DeLuca
Life of this patent
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Abstract
Orthodontic brackets are made from ion exchange strengthened glass. In a preferred embodiment, the glass is a lithium alumino silicate srengthened with sodium ions.
Claims4
An orthodontic bracket including a base member having a tooth contacting surface, and a body member including walls defining an archwire groove, said bracket comprising ion exchange strengthened glass.
Dependencies are inferred from the claim text.