A dental instrument is provided for the preparation of teeth, in particular of tooth and pin for use in an intended bore hole, in particular a drilled hole is produced a dental instrument according to the invention with a

摘要

The present invention relates to a a dental instrument (1) is provided for the preparation of teeth, in particular of tooth, wherein said a dental instrument (1) for the removal of dental material is operated, or can be operated in an oscillating manner and, in particular by means of sound, preferably by means of ultrasound, is set into vibration or displaceable, wherein the a dental instrument (1) in an intended direction of advance (a) parallel to a longitudinal axis (b) of the dental instrument (1) the front in the form of a guide section (2), the perpendicular to the longitudinal axis (b) has a circular cross section and for the introduction and lead of the dental instrument (1) in a prefabricated in the cross section of circular bore hole in the tooth (19) is provided, wherein in the direction opposite the forward direction (a) on the guide section (2) is followed by a working area (3), whose surface is at least in sections, tooth material is designed for, the working area (3) perpendicular to the longitudinal axis (b) a rotation asymmetric, preferably substantially oval, cross section for the preparation of a rotation asymmetric, preferably essentially oval, bore hole (14), the superimposed on the prefabricated circular bore hole has.Furthermore, the invention relates to a pin (13) for use in an intended bore hole (14), in particular a vehicle equipped with an inventive a dental instrument (1) generated bore hole (14).