Orthodontic bracket and method

Details Orthodontic bracket and method Orthodontic bracket and method

1991-05-20

1992-11-03

O'Connor, Cary E.

Dentistry

Orthodontics

Bracket

433 10, A61C 300

Patent

active

051602610

ABSTRACT:
An edgewise bracket (10) is provided with notches (34, 36, 38 and 40) in wing tips (24, 25, 26 and 27), respectively. The notches (24, 25, 26 and 27) are generally concave and have a mesiodistal width slightly greater or slightly less than the thickness of an archwire retaining device (32) depending on whether the device (32) is a metallic wire or an elastomeric ligature. The archwire retaining device (32) is inserted into the notches (34, 36, 38, and 40) to retain an archwire (30) within a slot (28) which has a depth greater than a thickness of the archwire (30). The device (32) has selectively reduced undesired frictional contact with the archwire (30), and, therefore, frictional interference between the device (32) and the archwire (30), and the archwire (30) and the bracket (10) is reduced or eliminated.

REFERENCES:
patent: 1890487 (1932-12-01), Angle
patent: 3854207 (1974-12-01), Wildman
patent: 4103423 (1978-08-01), Kessel
patent: 4260375 (1981-04-01), Wallshein
patent: 4669981 (1987-06-01), Kurz
patent: 4712999 (1987-12-01), Rosenberg
patent: 4793804 (1988-12-01), Schudy
patent: 4799882 (1989-01-01), Kesling
patent: 4819316 (1989-04-01), Rossini et al.
patent: 5062794 (1991-11-01), Miura

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