The patient is evaluated and custom made device are made for patients suffering from sleep apnea. The evaluation team will guide you regarding all pros and cons of the device , the advantages, disadvantages and whether you are a candidate or not with all other alternatives. Oral appliances act by moving (pulling) the tongue forward or by moving the mandible and soft palate anteriorly, enlarging the posterior airspace. They open or dilate the airway. Newer designs have separate upper and lower parts that are attached to each other and that allow for adjustability and jaw mobility. Multiple different devices are available . At present, the 3 basic designs of OAs used to treat sleep-related breathing disorders (SRBDs) are mandibular repositioners, tongue-retaining devices (TRDs), and palatal-lifting devices.