Dentistry – Orthodontics – Bracket
Reexamination Certificate
2005-11-01
2005-11-01
Wilson, John J (Department: 3732)
Dentistry
Orthodontics
Bracket
Reexamination Certificate
active
06960081
ABSTRACT:
An orthodontic bracket comprises a bracket base, an arch wire slot configured to receive an arch wire, a ligation cover, an elongate film hinge that interconnects the bracket base and ligation cover, and a cam structure. The ligation cover is selectively rotatable about the film hinge relative to the bracket base between an open, non-ligating position and closed, ligating position relative to the arch wire slot. The cam structure includes a curved surface proximal to the elongate film hinge that assists in distributing forces throughout a significant portion of the entire length of the film hinge as the cover is rotated relative to the bracket base. The cam structure also includes a camming surface that biases the ligation cover toward the open, non-ligating position. The ligation cover covers at least a portion of the slot when in the closed, ligating position.
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Abels Norbert
Backes Claus H.
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