Abstract
An orthodontic appliance for maxillary expansion is presented, which consists of a wire assembly fabricated from 0.032” round straight length beta-titanium wire. Posterior active portion of the appliance consists of a trihelix omega loop parallel to palatal surface, providing transverse expansion and distalizing forces on the first molars. Anterior active portion consisting of an acrylic apron (bib) over a (wing-like) wire framework, provides transverse expansion at the anterolateral slopes of the palate including the depths; lying directly over the envisioned canine- first premolar root area of the palatal vault surface.
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