The most commonly prescribed treatment for Sleep Disordered Breathing (SDB) which includes snoring, upper airway resistance syndrome (UARS) and sleep apnoea (OSA) is Continuous Positive Airway Pressure (CPAP), but with the high non compliance and intolerance of this treatment, oral appliances in the form of Mandibular Advancement Devices (MADs) are a very plausible and highly effective alternative.