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Elastic Activator for Treatment of Open Bite

Department of Orthodontics, School of Dental Medicine, University of Heidelberg, 69120 Heidelberg, Germany

Correspondence: Dr Angelika Stellzig, Poliklinik für Kieferorthopädie, INF 400, 69120 Heidelberg, Germany.

This article presents a modified activator for treatment of open bite cases. The intermaxillary acrylic of the lateral occlusal zones is replaced by elastic rubber tubes. By stimulating orthopaedic gymnastics (chewing gum effect), the elastic activator intrudes upper and lower posterior teeth. A noticeable counterclockwise rotation of the mandible was accomplished by a decrease of the gonial angle. Besides the simple fabrication of the device and uncomplicated replacement of the elastic rubber tubes, treatment can be started even in mixed dentition when affixing plates may be difficult.

Key words: Elastic Activator, Functional Appliance, Open Bite, Reduction of Anterior Facial Height, Vertical Malocclusion

Refereed Paper