Obstructive sleep apnea is the most common sleep-related breathing disorder. People with obstructive sleep apnea repeatedly stop and start breathing while they sleep.There are several types of sleep apnea. Obstructive sleep apnea occurs when the throat muscles relax and block the airway. This happens off and on many times during sleep. A sign of obstructive sleep apnea is snoring.Treatments for obstructive sleep apnea are available. One treatment is a device that uses positive pressure to keep the airway open during sleep. Another option is a mouthpiece to thrust the lower jaw forward during...