These intraoral nighttime appliances can treat snoring by acting directly on the mechanism which is the cause of it, by pushing the jaw forward. Mandibular repositioning pushes tongue forward and keeps epiglottis apart from uvula, thus solving the vibration of the soft tissues of the palate to the passage of air which creates the snoring sound. mad appliances are also used for the treatment of sleep apnea (osa) as they can solve the obstruction of rear airway tissues by restoring breathing capacity during sleep.