When upper anteriors are lingually positioned, the upper cuspids are often blocked out of the arch form. To gain room for the cuspids, the anteriors must first be moved back into their normal position. This design employs the use of a single expansion screw to uniformly torque the four incisors labially. A labial bow is placed from lateral to lateral to aid in appliance retention and to provide an attachment point for the T-springs that will be used to move the cuspids back into the arch form. As with all appliances, sequencing the movements is important. The incisors must be moved to gain space prior to activating the T-springs. Note: The labial bow is carefully bent so that the distal crossover point will not interfere with your ability to reposition the cuspid.