DEVICE FOR CONNECTING A DENTISTRY HANDPIECE OR CONTRA-ANGLE ON A SUPPORT

摘要

A support for a dentistry handpiece or contra-angle is connected to a dental unit, such as a motor, including apparatus for the supply of water and air for spraying the working point of the supported handpiece of contra-angle and, if desired, apparatus for supplying electric current to bulbs situated in the head of the handpiece or contra-angle for lighting in the working point and/or fibre optics. The rear face of the support is provided with a projecting ring of insulating material and the motor includes an annular hollow form for receiving the ring when the support is mounted to the motor.