Most insurance providers and even Medicare make it possible for patients suffering from obstructive sleep apnea to receive a new oral appliance every three years. This ensure the ongoing function of their appliances. However, many patients don’t know about this, and many dentists fail to touch base with their patients to ensure they’re coming back for a new appliance at least every three years. Keep reading to learn more about the three year rule and how you can put it to work in your dental office.