Crucial tools for any dentist, these instruments also represent one of the biggest cross-contamination risks. When one of these rotating devices slows down or stops, back-siphoning effects can suck liquids inside the handpiece, hence the need to perform cleaning.  Instruments cannot be sterilised without thorough cleaning being performed first. Disinfection, and equally important, lubrication, should happen after each use. This procedure is also essential for maintaining instrument quality.