Rotatable dental jet nozzle

摘要

A dental tool embodying the invention includes a handpiece into which is inserted a shaft on which is mounted a head portion which extends above the top of the handpiece. The head portion includes first and second input channels which are merged into an output channel for discharging a gas, powder and liquid mixture obtained from mixing the materials supplied to the input channels. A rotatable nozzle is mounted directly or via a swivel arrangement on the head portion so as to provide a conduit from the output channel to teeth to be cleaned. The nozzle may be rotated by a dental practitioner using any of the fingers of the hand holding the handpiece to apply a force directly to the nozzle or to a swivel arrangement coupling the nozzle to the head. The head portion may be formed of an inexpensive material, such as plastic, so the nozzle and/or the head portion may be discarded after being used, without excessive cost.