Peak Torque Values at Fracture of Orthodontic Miniscrews

Temporary orthodontic miniscrews have become increasingly popular as a means of providing skeletal anchorage for tooth movement. If miniscrew anchorage is to be successful, however, the mechanical lock (torque) of the screw in the bone must be able to withstand the applied force. A self-drilling miniscrew is inserted directly through the gingival or oral mucosa into bone; a non-self-drilling miniscrew is inserted through a pilot hole that has been drilled into the bo...