On occasion, a single lower posterior segment will end up being lingually tipped. By placing Uprighting Lower Posteriors Expansion Device, it is possible to upright this segment. The labial arch wire is incorporated into the non-moving section to create additional anchorage. The expansion screw is adjusted one-quarter turn once each week, providing 1mm of movement a month. This particular design is used to move one posterior quadrant buccally, from the bicuspids distally. Note: If the tipped segment is in crossbite, it will be necessary to either design the appliance with an occlusal plane or make an opposing appliance with an anterior bite plane or occlusal coverage.