Mandibular advancement splint
（重定向自Mandibular splint）
![A mandibular advancement splint for treatment of sleep apnea](/Images/godic/202501/25/Mandibular_advancement_splint4959.jpg")
![A mandibular splint produced by 3D printing from titanium coated with a medical grade plastic. A 3D scanner was used to map a patient's mouth. The output tube has two separate airways that allow air to flow through to the back of the throat, avoiding obstructions from the nose, the back of the mouth and tongue.](/Images/godic/202501/25/3D_printed_mouthpeace4959.jpg")
A mandibular splint or mandibular advancement splint (MAS) is a device worn in the mouth that is used to treat orofacial disorders including: obstructive sleep apnea (OSA), snoring, and TMJ disorders. These devices are also known as mandibular advancement devices, sleep apnea oral appliances, oral airway dilators and sleep apnea mouth guards.