Dental anchoring pin with apical end adapted to avoid fissures and fractures of tooth roots

摘要

The pin has a flat apical end (1) presenting a truncated hemispherical part with a flat distal end, where radius of curvature of the truncated hemispherical end continuously varies between a cylindro-conical part and the apical end. The radius of curvature is not less than .1 millimeter. The apical end is in truncated ogival, ovoid and spheroidal shape. A conical body i.e. titanium stem, has a section decreasing towards the apical end. The apical end extends the stem through the hemispherical part that has a shape of sphere portion. An independent claim is also included for a system comprising a radicular anchor pin and a drill bit.