The present invention relates to an orthodontic appliance for aligning teeth including a tooth to be aligned, comprising:a vibrating element for generating mechanical vibration and applying the vibration to the tooth to be aligned anda dental mouthpiece having the vibrating element built therein and mountable on the teeth with the vibrating element built therein, the dental mouthpiece having an inner surface form in conformity with a users dental cast wearing braces mounted on the teeth in such a manner as to align the tooth to be aligned.
