Abstract: An orthodontic corrective appliance for correcting malpositioned molars, wherein one end of the appliance is mounted on a supporting device, and the other end is applied to the given molar with spring loading includes a pusher element which is guided axially in a sleeve and is acted upon by a compression spring, and the free end of the pusher element extends from the sleeve and is provided with a connecting piece which is applied to the supporting device. Several small tubes on the outer surface of the sleeve have inner bores that guide and support a spacer bar that extends parallel to the sleeve. The end of the spacer bar that points towards the connecting piece is supported on one of the tubes, and the end of the spacer bar that faces away from the connecting piece is supported on a transpalatal arch, a Gashgarion lock or similar element.

Abstract: An orthodontic corrective appliance for correcting malpositioned molars, wherein one end of the appliance is mounted on a supporting device, and the other end is applied to the given molar with spring loading includes a pusher element which is guided axially in a sleeve and is acted upon by a compression spring, and the free end of the pusher element extends from the sleeve and is provided with a connecting piece which is applied to the supporting device. Several small tubes on the outer surface of the sleeve have inner bores that guide and support a spacer bar that extends parallel to the sleeve. The end of the spacer bar that points towards the connecting piece is supported on one of the tubes, and the end of the spacer bar that faces away from the connecting piece is supported on a transpalatal arch, a Goshgarian lock or similar element.

Abstract: An orthodontic corrective appliance for correcting malpositioned molars, wherein one end of the appliance is mounted on a supporting device, and the other end is applied to the given molar with spring loading includes a pusher element which is guided axially in a sleeve and is acted upon by a compression spring, and the free end of the pusher element extends from the sleeve and is provided with a connecting piece which is applied to the supporting device. Several small tubes on the outer surface of the sleeve have inner bores that guide and support a spacer bar that extends parallel to the sleeve. The end of the spacer bar that points towards the connecting piece is supported on one of the tubes, and the end of the spacer bar that faces away from the connecting piece is supported on a transpalatal arch, a Gashgarion lock or similar element.

Abstract: An orthodontic corrective appliance for correcting malpositioned molars, wherein one end of the appliance is mounted on a supporting device, and the other end is applied to the given molar with spring loading includes a pusher element which is guided axially in a sleeve and is acted upon by a compression spring, and the free end of the pusher element extends from the sleeve and is provided with a connecting piece which is applied to the supporting device. Several small tubes on the outer surface of the sleeve have inner bores that guide and support a spacer bar that extends parallel to the sleeve. The end of the spacer bar that points towards the connecting piece is supported on one of the tubes, and the end of the spacer bar that faces away from the connecting piece is supported on a transpalatal arch, a Gashgarion lock or similar element.

Abstract: The invention relates to an orthodontic expansion screw for the generation of an expansion force between a first and a second fastening elements, for the fastening to oppositely lying sides of the upper jaw, and an adjusting element connected with the fastening elements for the alteration of the mutual spacing of the fastening element. The invention is characterized in that each fastening element has at least two mounting wires with at least three free ends of the anchoring of teeth of the upper jaw.