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In page Temporomandibular joint dysfunction:

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Attempts in the last decade to develop surgical treatments based on MRI and CAT scans now receive less attention. These techniques are reserved for the most difficult cases where other therapeutic modalities have failed. The American Association of Oral and Maxillofacial Surgeons recommends nonsurgical treatment and minimally invasive surgeries as the initial management for most patients.[1] The American Society of Maxillofacial Surgeons recommends a conservative/non-surgical approach first.[citation needed] Only 20% of patients need to proceed to surgery.