A method and device for reducing oral discomfort in a mouth of a user using high frequency vibration (HFV) includes placing a proximal end of a mouthpiece intraorally into vibrational contact with a dentition of the user, activating a vibration unit so as to deliver vibration at a frequency higher than about 80 Hz to the dentition of the user, and removing the vibration unit after about 5 minutes, wherein oral discomfort is reduced compared to a time before activating the vibration unit.
