Grinding can cause severe damage to your teeth and is one of the leading jaw pain causes. It is the process of clenching the teeth, that is not associated with chewing. Some people grind their teeth when they feel stressed, but a lot of people grind their teeth while sleeping, they just aren't aware of it. If left untreated, it can potentially lead to a number of other dental issues. Practicing stress relieving exercises or wearing a mouthguard at night are just some of the ways to stop grinding.