A vibrating dental device (3) vibrates a specific tooth (1a) in a dentition (1) attached with a bracket (5), a wire (6) or a mouthpiece (108) as an orthodontic appliance (2). The vibrating dental device (3) includes a vibration source (10A), a connector (12A) connected to the orthodontic appliance (2), and a vibration transmitter (11A), which transmits vibration generated by the vibration source (10A) to the connector (12A). The connector (12A) is detachably attached to the orthodontic appliance (2).