Dentistry – Orthodontics – Bracket
Patent
1997-05-27
1998-10-20
Lewis, Ralph A.
Dentistry
Orthodontics
Bracket
433 8, A61C 700
Patent
active
058237712
ABSTRACT:
An orthodontic bracket in two parts includes firstly a base adapted for adhesion to a front of a tooth and including an elongate aperture therethrough, and secondly an elongate, undulated anchor sized for placement by a force fit within the elongate aperture of the base. On opposite ends of the anchor are respectively placed a head having a wire slot that is open on one side passing transversely therethrough, and a lip oriented in the direction of the open side of the bracket and adapted to extend outwardly from the elongate aperture towards the tooth when the anchor is placed within the aperture. The head may have various torque angles so as to provide varying degrees of torque to a tooth upon which applied.
A second embodiment of the anchor includes an anchor post having bilateral extensions therefrom for purposes of causing tooth rotation; a third embodiment of the invention includes pairs of anchor posts disposed at opposite ends of the anchor as secondary means for interconnection between teeth either laterally within an arch or vertically between arches; a fourth embodiment of the invention provides means for installing a tipping spring therein; and a fifth embodiment of the invention provides slots at opposite ends of the anchor that lie in the labial-lingual direction as secondary means for bilateral interconnection from a particular tooth to facing teeth on either or both sides thereof.
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