Dentistry – Orthodontics – Bracket
Patent
1987-04-10
1988-11-15
Wilson, John J.
Dentistry
Orthodontics
Bracket
433 9, 501 7, A61C 300
Patent
active
047846062
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.
REFERENCES:
patent: 3428513 (1969-02-01), Denman
patent: 3573020 (1971-03-01), Karstetter
patent: 4074992 (1978-02-01), Voss
patent: 4189325 (1980-02-01), Barrett et al.
patent: 4216583 (1980-08-01), Reynolds
patent: 4595598 (1986-06-01), DeLuca et al.
DeLuca Robert D.
Jones Robin M. F.
Panzera Carl
Johnson & Johnson Consumer Products, Inc.
Metz Charles J.
Wilson John J.
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