Dentistry – Orthodontics – Bracket
Patent
1990-06-14
1992-01-07
Wilson, John J.
Dentistry
Orthodontics
Bracket
433 9, A61C 300
Patent
active
050785966
ABSTRACT:
An orthodontic bracket for securing orthodontic appliances to a tooth and an associated fabricating method. The orthodontic bracket (10) generally comprises a body (18) fabricated of a high strength plastic material (22) filled with an oxide particulate filler (24). In certain alternate embodiments the body (18) is further strengthened by dispersing reinforcing fibers (32) in the plastic material (22). The body (18) in certain embodiments is coated with a layer of organo-functional silane (28) and/or a high strength plastic (30) so as to resist staining and/or abrasion. The method of the present invention generally comprises filling the plastic fabricating material (22) with the oxide filler (28) and/or reinforcing fibers and/or whiskers (32) and molding the composite material into the desired bracket body configuration. The body (18) can then be coated with the desired protective abrasion and stain resistant coating (30).
REFERENCES:
patent: 4180912 (1980-01-01), Kesling
patent: 4302532 (1981-11-01), Wallshein
patent: 4681538 (1987-06-01), DeLuca et al.
patent: 4894012 (1990-01-01), Goldberg
patent: 4936773 (1990-06-01), Kawaguchi
patent: 4988293 (1991-01-01), Collins et al.
Carberry John J.
Negrych John A.
Cherichetti Cindy A.
Minco, Inc.
Wilson John J.
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