Customized low force orthodontic arch wires include a core wire (102) formed of a shape memory material and a plurality of bracket engagement blocks (104) disposed in spaced apart relationship along the length of the core wire (102). The particular position of each engagement block (104) along the length of the core wire (102), as well as the length and curvature of the core wire (102), are customized for the particular patient on which the arch wire is to be installed. A physical or electronic custom model of the patients dental arch is obtained. The customized arch wire is then fabricated according to the specifications determined by reference to the custom model of the patients teeth.