| abstract |
A tooth positioner which is formed out of molded plastic to conform about arches defined by upper and lower rows of teeth, the positioner being generally U-shaped in plan and H-shaped in cross-section, the positioner having troughs sized and shaped to conform to the arches, the troughs being defined by lingual and labial-buccal flanges joined together by an isthmus including a wire embedded in the lingual flange to alter the shape of at least one of the arches. |