Endosteal single tooth implant secured against torsion, stamping tool and positioning aid for producing such a single tooth implant

摘要

PCT No. PCT/DE97/00460 Sec. 371 Date Feb. 18, 1999 Sec. 102(e) Date Feb. 18, 1999 PCT Filed May 5, 1997 PCT Pub. No. WO98/07382 PCT Pub. Date Feb. 26, 1998Endosteal individual tooth implant for a snug tooth replacement, having an essentially cylindrical basic element that can be placed in a bore made in a jaw bone, which basic element has a blind bore open at its coronal end, and with a spacer sleeve that can be placed on the coronal frontal edge of the basic element so as to be secured against rotation, which sleeve has a cervical centering collar that can be placed into a hollow cylindrical annular opening provided at the coronal end of the basic element, and a shoulder that is attached to the centering collar in the coronal direction and that can be placed onto the coronal frontal edge of the basic element. The sleeve has a bore, open at its coronal end, for receiving an implant post that can be placed directly or indirectly into the blind bore of the basic element and that penetrates at least partially the spacer sleeve, and is provided with a fastening head for the tooth replacement, replacement. A first number of coronally open basic element positive-lock grooves are arranged in the inner wall of the hollow cylindrical annular opening, immediately following the frontal edge of the basic element, and the grooves preferably having a regular spacing in relation to the circumference of the basic element, and a second number of spacer sleeve positive-lock cams, fashioned complementary to the basic element positive-lock grooves, are arranged, preferably with a regular spacing in relation to the circumference of the spacer sleeve, on the outer wall of the centering collar in a positive-lock segment whose outer diameter corresponds to the inner diameter of the basic element in the area of the basic element positive-lock grooves. The second number before the due placement of the spacer sleeve into the basic element is a whole-number multiple of the first number, and the spacer sleeve positive-lock cams or keys are selectively removed by a stamping tool to match the grooves of the basic element.