Grinding device for dental purposes

摘要

The dental grinding instrument has a spindle (3) where the free end (4) has radial elasticity to vary its diameter, with a polygon cross section. The holder opening at the grinding disc has a polygon contour to match the cross section shape of the spindle end (4). The contours of the free end (4) of the spindle (3) have an identical or different contour. The free end of the spindle may have at least one longitudinal slit, which are deformable in order to release the polygonal cross section from the polygonal contour.