A mandibular advancement device, also known as a snoring mouthpiece, helps to prevent snoring by holding thelower jaw slightly forwardwhile sleeping. By positioning the lower jaw forward, the airway opens up and allows one to breathe better. As a result of better breathing, snoring often ceases....
One type of lung function test is calledspirometry. You breathe into a mouthpiece that connects to a machine and measures your lung capacity and air flow. Your doctor may also have you stand in a box that looks like a telephone booth to check your lung capacity. This is called plethysmograp...