Orthodontic lingual face bow

Details Orthodontic lingual face bow Orthodontic lingual face bow

1984-01-23

1984-12-18

Peshock, Robert

Dentistry

Orthodontics

Including extra-oral force transmitting means

A61C 700

Patent

active

044888724

ABSTRACT:
An orthodontic face bow lever arm for applying torque to a lingual or palatal side orthodontic appliance comprising a rigid (e.g., hard acrylic) tray with an inner softer surface (e.g., thermoplastic) contoured to act as a cushioned fulcrum pivoting about the teeth wherein a pair of wire lever arms are embedded in the rigid hard acrylic portion. The intraoral extension of the wire lever arms terminate in a hook that fits between the teeth and the archwire of the lingual orthodontic appliance while the extraoral extension of the wire lever arms project outwardly and upwardly terminating in a second set of hooks which attach elastically to a conventional high pull orthodontic headgear. Such a face bow is particularly useful in applying a lever arm torque effect to the lingual appliance, thus forcing the root of the tooth rearward (i.e., tooth root tips back).

REFERENCES:
patent: 4229165 (1980-10-01), Kurz
patent: 4431410 (1984-02-01), Ruderman

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