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Overview
The Nitanium Palatal Expander 2 Appliance’s action is the result of transition temperature and shape memory. Warmth within the patient’s mouth activates movement in the thermal nickel titanium energy wire toward the appliance’s pre-programmed shape. This produces the desired expansion in unison with tooth movement. Once the exact correction is achieved, the appliance stops expanding and lies passive. A light, slow, continuous force system has been shown to be associated with a more physiological adjustment, neuromuscular stability, and less relapse potential. In addition, repair keeps up with expansion. Expansion is usually completed in 2 to 4 months and retention is usually 2 to 3 months.
