What is bruxism?

Bruxism is the involuntary gnashing of teeth. Some people with bruxism — originating from the Greek word ‘brychein’ — clench their teeth during the day when they are tense. This is different from tooth grinding or clenching that occurs at night, which is called sleep bruxism. Mild bruxism may not require treatment, but in severe cases, can lead to jaw disorders, headaches, damaged teeth and other problems.