Bruxism is the technical term for teeth grinding. Individuals that grind their teeth are called bruxers, and often bite down at inappropriate times, most frequently, while they sleep. Stress and an individual's personality type can possibly contribute to bruxism, but most bruxism has a genetic root and is unlikely to stop as we age. Many people don't realize they have this habit, thus bruxism isn't diagnosed until it is too late. However, bruxism can be easily treated by a dentist. The dentist can make a plastic mouth appliance such as a night guard to absorb the force of biting during sleep.