Patent ID: 9011144
Filing Date: 2015-04-21
Classification: A61C,B33Y

Abstract:
1. A palatal system to prevent movement of selected teeth of a human during corrective movement of other teeth through the use of an orthodontic appliance, said palatal system comprising: a. a bone anchorage device arranged for locating in the palatal midline surface of a patient; b. a single elongate stem having a generally cylindrical cross-section and having an anchorage end arranged for affixation to said bone anchorage device and a free end extending in an anterior direction from said anchorage end, said stem being formed in an S-shaped curve to conform to the palatal arch of the patient wherein said single elongate stem includes a retention structure to facilitate affixation of said stem to said bone anchorage device, wherein said retention structure is a spine arranged to wrap around said bone anchorage device, said spine comprising a zig-zag configuration providing retention surfaces; and, c. a cross-bar extending laterally in opposite directions from the free end of said stem, wherein said elongate stem and said cross-bar together form an uppercase T-shape, said cross-bar arranged to engage two or more selected adjacent teeth to retain said teeth non-mobile and non-rotational during corrective movement of other teeth utilizing an orthodontic appliance, said cross-bar comprising a generally flat and rectangle-shaped central portion that remains generally flat and unbent and is extendable across said two or more selected adjacent teeth, and opposed curved ends extending from said central portion, said curved ends arranged for bending around the edges of said two or more selected adjacent teeth to be anchored, said generally flat and rectangle-shaped central portion of said cross-bar intersecting the free end of said stem.