1. To install a diastema burr, first remove the grinding wheel from the PowerFloat (see instructions for removing a grinding wheel).
2. Thread the diastema burr into the grinding head and turn it clockwise until finger-tight (Fig. 2). The diastema burr is now ready for operation
3. To remove the diastema burr, lock the drive shaft (Fig. 1). Unscrew the diastema by turning it counter-clockwise (Fig. 3).

Note: It may be necessary to use a pair of pliers (pictured in Fig. 3) to grasp the burr at its base in order to loosen it, since burrs may become tighter after operation with PowerFloat models.