The answer to why you grind your teeth used to be stress or a bad bite, but the newest research shows that it’s due to interrupted sleep breathing.
Why is a dentist talking about sleep? It turns out that placement of the teeth and mouth can affect how well you’re able to breathe while you sleep, and thus, your sleep quality. The tiny space at the back of your throat gets narrowed thanks to things like crowded teeth, a large tongue or tonsils, allergies, or weight gain. The narrower it gets, the more likely you are to have interruptions in your breathing while you sleep. When breathing is interrupted, sleep is interrupted, which affects everything from mood to susceptibility to disease.