Study on the relation between stomatognathic system and the systemic condition. Influence of horizontal changes in mandibular position on the upright posture in temporomandibular disorder patients.:—Influence of hotizontal changes in mandibular position o
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In this study, the author investigated changes in upright posture in 4 TMD patients while the mandibular position was altered for 1 and 5 minutes in a horizontal direction at the distances of 2.5 and 5.0mm.<BR>Namely, loci of gravity fluctuation were examined under analysis system in order to reveal what effect was given upon the upright posture. At the same time, electromyograms were obtained from muscles of masticatory system, neck and lower extremity for the observation of effects on gravity muscles. The results obtained were as follows:<BR>1. Loci of gravity fluctuation<BR>1) Loci of gravity fluctuation tended to increase beyond the normal range when the mandibular position was hor-izontally changed for 1 and Sminutes at the distances of 2.5 and 5mm. Many patients had differences between right and left directions.<BR>2) Changing amounts were less in the anterior direction than in the right and left directions.<BR>2. Activities of antigravity muscles<BR>Although muscular activities showed similar tendencies to those of loci of gravity fluctuation they showed indi-vidual differences.<BR>3. Since these results revealed that horizontal changes in mandibular position influenced both loci of gravity fluc-tuation and muscular activities, it was suggested that changes in the stomatgnatic system are involved in the sys-temic condition, and that the the recovery of adequate function of the stomatognatic system is essential to the maintenance of systemic harmony.
- 日本顎口腔機能学会の論文
日本顎口腔機能学会 | 論文
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