Most people clench or grind their teeth at night, and are entirely unaware that they do this. Habitual teeth grinding is known as Bruxism. The excessive force from clenching and grinding teeth can cause them to flatten. If left untreated, this can potentially lead to temperature sensitivity, broken/damaged teeth, receding gums, pain in the back, ears, jaw and neck, and even eventually lost teeth. Bruxism is also a leading cause of TMJ Disorder. The temporomandibular joints (T