Provided is prophylaxis cup for dentistry, comprising a first section storing a first medium, a second section storing a second medium, and one or more channels between the first section and the second section, wherein the first section, the second section and the one or more channels are adapted to allow the first medium and the second medium to be mixed, in response to a rotational movement of the prophylaxis cup. Provided also is a method for using prophylaxis cup in which the prophylaxis cup is positioned on a patient's tooth. A control is triggered to rotate the prophylaxis cup to cause a first medium stored in a first section of the prophylaxis cup to be mixed with a second medium stored in a second section of the prophylaxis cup. Provided further is a prophylaxis angle for dentistry, comprising a hand-piece, with the prophylaxis cup coupled to the hand-piece.
