Oral appliances are dental devices designed to help with various conditions, such as sleep apnea and bruxism (teeth grinding). They are custom-fitted by dental professionals to ensure comfort and effectiveness. These appliances work by repositioning the jaw or keeping the airway open during sleep. Common types of oral appliances include mandibular advancement devices and night guards. Mandibular advancement devices push the lower jaw forward to prevent airway blockage, while night guards protect teeth from grinding. Both types aim to improve sleep quality and overall oral health.