The Silent Nite® device sets the lower jaw forward ever so slightly, relieving your airway, and making for a restful, uninterrupted night’s sleep. While you are wearing this snore guard, you can still move and open your mouth. So, this makes it a comfortable mouthguard to wear. Your progress is occasionally monitored on a wrist-worn oximeter over the course of a few months, graphing improvements to blood oxygen levels.