Instrument, especially instrument kit for providing implants in jawbone, has edges of threaded instrument thread facing away from lower end of threaded instrument at smaller angle to axis of instrument than those facing towards it

摘要

The device has a spiral drill as a pre-drill and a conical threaded instrument that decreases in diameter to a point and that is dimensionally matched to the spiral drill. In order to compress the jawbone the edges of the thread of the threaded instrument are configured in respect of their angle to the axis of the instrument so that the edges facing away from the lower end of the threaded instrument forma smaller angle to the axis than those facing towards it.