An dieser Fläche des Stulpprofils wird das Gehäuse mit Schrauben befestigt. Es deckt den Kanal ab, in dem die beiden Treibstangen geführt sind. ###>The threads being self-tapping, the insertion of the implant is facilitated because the implant is screwed in a hole in the bone without the need to first pre-cut grooves in the inner surface of the hole to accommodate the threads of the implant.