Reviews the literature on temporomandibular joint dysfunction syndrome and myofascial pain dysfunction syndrome, which have been viewed as dental problems and have only recently received attention by psychologists. The incidence of these syndromes has been found to be as high as 79% (in a study of Swedish shipyard workers by T. Hansson et al [1975]). The symptoms that constitute each syndrome include pain, sounds during condylar movements, and limitations of manibular movements. The etiological theories for each syndrome are reviewed; several researchers have concluded that interlocking factors of occlusal, neurophysiological, and psychological origin may be the cause. Methodological considerations involving classification, assessment, and treatment are presented. Both psychoanalysis and EMG feedback with progressive relaxation training have been used. (130 ref)

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