Abstract
Internal derangements, myofascial pain dysfunction, and chronic dislocation of the temporomandibular joint (TMJ) are three common sequelae resulting from mandibular trauma. Etiologic factors include prolonged dental and otolaryngologic procedures, and intraoperative use of the laryngoscope and bronchoscope. Three cases are reported to document postanesthetic TMJ dysfunction arising from normal preoperative joints. Four types of TMJ dysfunction are discussed: anterior meniscus dislocation with reduction, anterior meniscus dislocation without reduction, dislocation/subluxation of the mandibular condyle, and myofascial pain dysfunction syndrome. Preoperative screening of mandibular function is recommended in identifying patients as either normal or having potential TMJ dysfunction. Failure to recognize postoperative TMJ dysfunction can lead to long-term symptoms that are difficult to alleviate. Litigation is a common sequel in these cases.
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