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 bymedication, surgery, root canal therapy, even teeth extracting, or the pain relieveeffect 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-likepains, abrupt in onset and termination, limited to the distribution of one or moredivisions of the trigeminal nerve and triggered by innocuous stimuli. It may developwithout apparent cause or be a result of another diagnosed disorder. There may or maynot be, additionally, persistent background facial pain of moderate intensity.Theyfulfilled 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 beyondthe 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 HeadacheDisorders 3rd edition diagnosis.
• Item 2 Persistent facial and/or oral pain, with varying presentations but recurringdaily for more than 2 hours per day over more than 3 months, in the absence ofclinical neurological deficit.They fulfilled criteria A-E
• Facial and/or oral pain fulfilling criteria B and C
• Recurring daily for >2 hours per day for >3 months
• Pain has both of the following characteristics: 1. poorly localized, and not followingthe distribution of a peripheral nerve 2. Dull, aching or nagging quality
• Clinical neurological examination is normal
• A dental cause has been excluded by appropriate investigations
• Not better accounted for by another the International Classification of HeadacheDisorders 3rd edition diagnosis

Exclusion Criteria:

• Head and facial trauma; orofacial and/or intracranial space occupying lesion indicatedby craniofacial CT ; pain caused by sinusitis and acute pulpitis, periapicalperiodontitis and periodontitis disease; no occlusal abnormalities and occlusiontreatment indications through a series of occlusal examination; children (younger than 18 years old) and pregnant women.