Provided is a dental ultrasonic cleaning device that can efficiently clean teeth or dentures in the mouth using ultrasound. A dental ultrasonic cleaning device (1) emits ultrasonic waves via a cleaning solution (W1) to the surface of a cleaning target (26) to carry out an ultrasonic cleaning. An ultrasonic horn (24) propagates ultrasonic waves generated by an ultrasonic vibrator (23) and outputs ultrasonic waves from a vibration surface (25) provided to a horn distal end side. A solution-collecting section (27) is provided so as to surround the vibrating surface (25) of the ultrasonic horn (24). The solution-collecting section (27) temporarily collects the cleaning solution (W1) between the surface of the cleaning target (26) and the vibrating surface (25). A cap member (33) is arranged facing the solution-collecting section (27) at a predetermined spacing. A suction tube (36) having a solution intake (35) is connected to the inside the cap member (33). The cleaning solution (W1), having been used for the ultrasonic cleaning, is suctioned in from the cap member (33) and discharged to outside of the mouth via the suction tube (36).
