The MemRx A appliance is the ideal choice to use in cases where the anterior teeth need to be moved labially. It is especially useful when used in conjunction with Straight Wire mechanics. The sliding anterior wire rests at or below the cingulum of anterior teeth. Gentle spring forces from the Nickel Titanium coil springs encourage bodily movement of the anterior teeth. It is suggested that a ledge of composite be placed just incisal to the wire to inhibit any incisal deflection that may occur once spring pressure is applied. Anchorage is achieved by using bands on the 6-year molars and first bicuspids. Parallel path of insertion between molars and bicuspids must exist for the appliance to fit properly. If no proper path of insertion exists, clasps or bonded mesial occlusal rests may be used. The appliance consists of the following:

• Molar bands.
• First bicuspid bands, clasps or mesial rests. (Note: Proper path of insertion must be present if bicuspid bands are prescribed.)
• A lingual connecting wire soldered between the molar and bicuspid bands.
• A transpalatal arch wire with adjustment loop in the palate soldered to the lingual of the molar bands.
• A soldered guide tube that is attached to and runs parallel with the connecting wire.
• A lingual arch I.P.C. (Inman Power Component) runs through the guide tubes.
• Nickel Titanium Open-Coil spring placed over the I.P.C. slotted wire.