Ni-Ti orthodontic palatal expansion arch and method of imparting forces on teeth

摘要

A removable orthodontic palatal expansion arch having a generally "M"-shaped configuration, the arch having a center segment composed of a near-stoichiometric alloy of nickel and titanium which possesses memory-retaining characteristics to simultaneously expand the bicuspids and expand, rotate, intrude and/or torque the maxillary molars, and end segments composed of an alloy of stainless steel or another biocompatible material configured for securing the archwire to lingual sheaths attached to molar bands.