Disclosed herein is a dental ultrasonic diagnostic apparatus. The dental ultrasonic diagnostic apparatus includes a housing located to be close to teeth and gums during insertion of the housing into a mouth of an object, and an acoustic portion provided inside the housing to transmit and receive an ultrasonic wave. The diagnostic apparatus may diagnoses tissue, foreign bodies, innervation, disease condition, lesions, and the like by ultrasonically imaging a gum, a lip, a palate, and a tongue in the mouth.
