Abstract: The invention relates to a hand tool for the care of dental instruments which is connectable at its inlet to a pressurized gas source and at its outlet to the inlet sleeve of the dental instrument to be serviced, which hand tool is provided with at least one container for receiving the agent and connected to the presurized gas line leading form the inlet to the outlet of the hand tool. It is the object of the invention to permit a troublefree metering in of even highly viscous agents for the care of the instrument and the dispensing of various amounts of the agents.