Protraction headgear

Details Protraction headgear Protraction headgear

2006-10-17

2006-10-17

O'Connor, Cary E. (Department: 3732)

Dentistry

Orthodontics

Including extra-oral force transmitting means

Reexamination Certificate

active

07121824

ABSTRACT:
A facebow which overcomes the adverse effects and limitations of current designs by rotating the maxilla in a downward and forward direction, which assists in correcting anterior open bites. This is accomplished by a design that produces forces above the center of resistance of the maxilla and parallel to the Frankfurt horizontal plane. The extra-oral headgear design is characterized by providing two independent adjustments (forehead width and horizontal/vertical dimensions) that allow the appliance to be customized to each patient. In particular, the two independent adjustments are provided by a fully adjustable forehead pad and bilateral adjustable blocks on opposite sides of the facebow extra-oral frame to provide horizontal and vertical adjustments.

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