'Turbo' prophy cup with step like prophy paste collecting reservoirs on turbine like vanes

Abstract

This invention is a dental prophylactic polishing cup of unique design and shape having uniquely shaped turbine like ribs or vanes positioned at an angle to the long axis of the prophy cup in such a manner, that as the prophy cup is rotated, the polishing paste held in the cup and brought to bear against a tooth will be acted on by said turbine like ribs or vanes forcing the prophylactic polishing back into the cup and over a series of steps on the front inclined “working” surface of said ribs or vanes, where said steps form a series of nearly horizontal “shelves” causing the polishing paste to collect, accumulate and become entrapped, the nearly horizontal shelves, acting as/or becoming reservoirs, holding the prophylactic polishing paste inside the prophy cup, for a longer period of time.

Dependencies are inferred from the claim text.