| 摘要 |
<p>The invention relates to a self-tapping screw implant, comprising a shaft, at the distal end of which a prosthetic head for receiving artificial teeth or bridges, partial or full prostheses, or the retaining constructions thereof, is provided, and at the proximal end of which a self-tapping thread having at least one half 180° turn, in particular a 360° turn, for screwing into the bone substance is provided, wherein the ratio of the outside diameter of the thread to the outside diameter of the shaft of the self-tapping screw implant ranges between 3 and 15, in particular between 4.5 and 13.5, preferably approximately 5, and the distal region of the shaft without thread and the proximal region of the shaft with thread have approximately the same or a similar axial length +/- max. 10%, and recesses are provided in the radially inner region of the turns of the thread, and the radially outer region of the thread turns and the shaft are substantially free of recesses. The aim is to further develop a mechanically highly resilient self-tapping screw implant such that it can be implanted in a minimally invasive manner with the least possible lesion of the mucous membrane, gums and bone tissue, yet ensures high-strength anchoring in the jaw bone.</p> |
