EXPANSION SCREW VECTOR® PISTON SCREW ASSORTMENT

Stainless steel screw for single tooth movement during orthodontic treatment with removable appliances. Three different screw lengths allow large protrusion by a constant and precisely controlled amount of pressure on the tooth to be moved. W x H x L 1.70 x 1.70 x 5.30 mm Expansion per 1/1 turn 0.35 mm Expansion per ¼ turn 0.0875 mm