Dentaurum J.p. Winkelstroeter Kg

Dentaurum Gmbh & Co. Kg

Walter Ehrenberger

Friedrich Sernetz

Michael Regelmann

Rainer Weber

Simon Trautwein

Klaus Wigger

Werner Ochs

An expansion screw for regulating teeth has two expansion-screw bodies, the spacing between which can be changed by means of a spindle, and has at least one guide pin which is aligned parallel to the spindle and engages in guide openings of the two expansion-screw bodies, the spindle having a first and a second threaded portion, each of which is connected to an expansion-screw body, and an actuating portion, with at least one point for application of a tool for rotating the spindle, and the expansion screw has a locking mechanism which interacts with the actuating portion in order to secure the spindle against unintended rotation. The locking mechanism has at least one locking element with a locking member which is disposed laterally alongside the actuating portion and subjects the actuating portion to an axial spring force when the spindle is rotated.

Expansion screw for regulating teeth

To create an orthodontic device with a base having a base surface for fixing the device to a tooth, and a slot for receiving an archwire, which is defined by a bottom surface and two side surfaces arranged on either side of the bottom surface and aligned in substantially parallel spaced relation to each other, and which extends in a substantially straight line through the base in the longitudinal direction of the base on a side thereof facing away from the base surface, and with a cover element for at least partially covering the open side of the slot facing the bottom surface, which is convertible and is easier to handle during the conversion, and which offers the wearer an increased degree of security, it is proposed that the side surfaces of the slot have a positively locking guide, which is aligned substantially parallel in relation to the longitudinal direction of the slot, and in which the cover element is slidably and detachably held on the base.

Orthodontic device

Growing community of inventors

Kaempfelbach, Germany

Walter Ehrenberger