An Follow-up Study of Occlusal Adjustment for Orofacial Pain

Inclusion Criteria: * The patients claim orofacial pain. The pain has been treated but not relieved by medication, surgery, root canal therapy, even teeth extracting, or the pain relieve effect went down for a period. The patients also match the following item 1 or 2: * Item 1: disorder characterized by recurrent unilateral brief electric shock-like pains, abrupt in onset and termination, limited to the distribution of one or more divisions of the trigeminal nerve and triggered by innocuous stimuli. It may develop without apparent cause or be a result of another diagnosed disorder. There may or may not be, additionally, persistent background facial pain of moderate intensity.They fulfilled criteria A-E * At least three attacks of unilateral facial pain fulfilling criteria B and C * Occurring in one or more divisions of the trigeminal nerve, with no radiation beyond the trigeminal distribution * Pain has at least three of the following four characteristics: * recurring in paroxysmal attacks lasting from a fraction of a second to 2 minutes. * severe intensity. * electric shock-like, shooting, stabbing or sharp in quality. * precipitated by innocuous stimuli to the affected side of the face. * No clinically evident neurological deficit * Not better accounted for by another the International Classification of Headache Disorders 3rd edition diagnosis. * Item 2 Persistent facial and/or oral pain, with varying presentations but recurring daily for more than 2 hours per day…