These tests are used to measure Apnoea-Hypopnea Index (AHI) during your sleep study. Your sleep physician may recommend lifestyle changes, surgery, CPAP – Continuous Positive Airway Pressure, maxillary expander, Mandibular Advancement appliance or Tongue Stabilising Device. We will liaise with your Sleep Physician, ENT surgeon to ensure you receive the right treatment for you. For patients with mild to moderate Obstructive Sleep Apnoea (OSA) Continuous Open Airway Therapy is the first line of treatment. It has two components, which fit over the upper and lower teeth. The SomnoDent appliance treats OSA by stabilising and/or moving the lower jaw slightly forward. This optimal position of the jaw prevents the patient’s airway from collapsing during sleep. These oral devices are comfortable and simple for patients to use, which is why many patients prefer it to other options.