Plastic bracket with mechanical retention and production...

Details Plastic bracket with mechanical retention and production... Plastic bracket with mechanical retention and production...

2011-04-19

2011-04-19

Lewis, Ralph A (Department: 3732)

Dentistry

Orthodontics

Bracket

Reexamination Certificate

active

07927097

ABSTRACT:
The invention relates to a bracket which is intended for use in orthodontics and which is made entirely from plastic using an injection molding process. The inventive bracket comprises the basic elements of any bracket, such as the base which is fixed or cemented to the tooth, the arch groove in the mesial-distal direction and flanges for standard wire ligatures or elastomers. The invention is essentially characterised in that, as with metal brackets, the fixing base provides mechanical retention and, as such, does not have to be coated with any type of chemical additive during the cementing procedure.

REFERENCES:
patent: 4219617 (1980-08-01), Wallshein
patent: 4604057 (1986-08-01), Viglietti
patent: 4936773 (1990-06-01), Kawaguchi
patent: 5267854 (1993-12-01), Schmitt
patent: 5622494 (1997-04-01), Andreiko et al.
patent: 5653588 (1997-08-01), Moschik
patent: 5820371 (1998-10-01), Forster
patent: 6071117 (2000-06-01), Andreiko et al.
patent: 6190165 (2001-02-01), Andreiko et al.

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