When lower posterior segments (cuspids to molars) are tipped lingually, the anteriors are typically crowded significantly. In adult dentition, this condition can still be corrected with a Schwarz appliance. However, some simple modifications to the basic appliance design are required. For example, instead of leaving the labial bow distal to the cuspids -- where it can encroach upon the space needed for them to move -- the bow can be carried back to the bicuspids. To achieve the adequate retention needed to activate the springs, a “C” clasp can be soldered to the labial bow and placed on the second bicuspids (shown). By placing composite ledges, you can gain even more retention.