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This study proposed a simplified pathophysiological diagnosis for case of restricted mouth opening in TMDs, and examined the main pathophysiological sign of restricted mouth opening. It was reported that the main pathophysiological sign of restricted mouth opening was disc disorders, such as anterior disc displacement without reduction. Pumping and manipulation tend to be used as the primary treatment for restricted mouth opening to restore the grinding of the condyles.<BR>Recently it has been shown that restricted mouth opening is caused not only by disc disorders but also by various pathophysiological mechanisms. Four items were proposed for simply classifying the pathophysiological signs of restricted mouth opening in TMDs. The four items were: 1) Muscular trismus type, 2) Disc disorder type, 3) Arthralgia disorder type; and 4) Muscular-Disc combined disorder type.<BR>The main pathophysiological sign was examined as a way of applying the classification to 61 cases of restricted mouth opening. The examination showed that the muscular disorders type was the primary cause of restricted mouth opening.<BR>It was suggested that pathophysiological diagnosis is essential for the treatment of cases of restricted mouth opening in TMDs.
一般社団法人日本顎関節学会の論文