Portable ultrasonic dental scaler

A portable ultrasonic tooth cleaner is provided with a shell, an ultrasonic transducer is arranged at the top end of the shell, a tooth cleaning head is arranged at the top end of the ultrasonic transducer, round holes which are communicated with each other are formed in the ultrasonic transducer and the tooth cleaning head, and the round holes are provided with water outlets which are formed in the tooth cleaning head and communicated with the outside. A water pump and a water tank are further arranged, the water pump is installed in the shell, and the water tank is installed at the bottom end of the shell; a water inlet of the water pump is connected with a water inlet hose, and the water inlet end of the water inlet hose is arranged in the water tank; a water outlet of the water pump is connected with a water outlet hose, and the water outlet end of the water outlet hose is communicated with a round hole formed in the ultrasonic transducer. The purposes of cooling the tooth cleaning head and moistening the