Dentistry – Orthodontics – Bracket
Patent
1989-05-26
1991-07-16
Wilson, John J.
Dentistry
Orthodontics
Bracket
A61C 300
Patent
active
050320815
ABSTRACT:
An orthodontic bracket made of a partially crystallized glass material and method for making same. The orthodontic bracket has a thin compressive outer crystalline layer.
REFERENCES:
patent: 3490984 (1970-01-01), Petticrew et al.
patent: 4784606 (1988-11-01), Jones et al.
patent: 4789649 (1988-12-01), Abert et al.
patent: 4814297 (1989-03-01), Beall et al.
Farzin-Nia Farrokh
Petticrew Richard W.
Ormco Corporation
Wilson John J.
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