Bruxism is a fairly common dental disorder that causes sufferers to grind or clench their teeth, especially at night. This disorder can cause jaw pain and lead to other conditions as it slowly breaks down teeth – up to and including temporomandibular joint (TMJ). However, your dentist can provide you with a clear teeth guard to help alleviate the effects of Bruxism. Prolonged Bruxism can disturb sleep patterns and make eating difficult.