顎口腔系の状態と全身状態との関連に関する研究 垂直的顎間関係の挙上が姿勢，特に重心動揺および抗重力筋に及ぼす影響

Abstract

We have researched how a change in occulusion influences the maintenance of equilibrium function and determined the influence of the gravity fluctuation on the upright posture objectively and quantitatively with a gravity fluctuation analyzing system: then, the results have been reported in some papers.There are, however no available report, except ours, concerning to the relation between the vertical mandibular relation and gravity fluctuation. We also think that the upright posture can be discussed more precisely by researching gravity fluctuation and the muscular activity of antigravity muscles together.Now, for researching the relation between the stomatognathic system and the systemic condition, I study the influence of bite raising for vertical position (2, 5 and 10mm) on the gravity fluctuation and antigravity muscles on the upright posture in 5 normal subjects as using the trace of gravity fluctuation and the electromyograms of antigravity muscles.The following conclusions suggest that the influence of bite raising for vertical position not only the stomatognathic system but also the systemic condition, particularly the upright posture.