Dentaurum J.p. Winkelstroeter Kg

Dentaurum H.p. Winkelstroeter Kg

Berthold Walter

Friedrich-Wilhelm Rohlcke

Friedrich Binder

Manfred Rapp

Hans-Joachim Kraus

Horst Kalytta

Expansion screw for tooth adjustment

An orthodontic expansion screw is provided having two screw bodies which are displaceable relative to each other by a screw spindle. A guide pin disposed parallel to the spindle is attached to an attachment section of one of the screw bodies and engages a guide bore of the second screw. The screw spindle has threaded sections of counter-rotating threads which engage threaded bores in the screw bodies; such opposed sections extend from an actuating section to which attached. The second screw body has a guide portion which extends from the second screw body portion. The first screw body has a threaded body portion extending from the attachment section whereby maximum separation of the screw bodies is permitted by virtue of the extended threaded bore.

Orthodontic expansion screw

Growing community of inventors

Remchingen-Singen, Germany

Berthold Walter