Handpieces with interchangeable heads and contra-angles with detachable cups are the only instruments that can be fitted to motors rotating at 40,000 rpm.
Apart from superior comfort and extended service life, Bien-Air prophylaxis instruments in particular offer high resistance to abrasive cleaning pastes and can withstand constant and repeated sterilizations.

Bien-Air prophylaxis instruments are ideal tools, indispensable for all dentists and hygiene specialists. Of all-metal design, they are extremely solid, with unmatched resistance to sterilization and hermetic sealing against abrasive cleaning pastes. Bien-Air's prophylaxis instruments, 100% Swiss Made, are available in two versions: with interchangeable head or cup (screw-on or clipped). They are the only such instruments able to be fitted on motors rotating at 40,000 rpm.