This is one of the many Herbst clones and is mechanically similar to the Herbst-Appliance. It consists of a plastic-covered spiral spring which clips onto the fixed brace and is used for the treatment of distal occlusion (Angle-Class II retrusive occlusion). Unfortunately, it often breaks and can cause problems in the fixed brace that the […]


A fixed appliance used in the upper jaw in order to distalize the first molars with the help of intermaxillary elastics. Since the elastics are fixed onto the labial arch of the multi-bracket appliance, there is little need for the use of the Jones-Jig.