| 摘要 |
A medical chair is provided which is useful in the case where the dental arch and the occlusal condition are to be measured correctly, and also in various medical treatment methods that synthetically pursue the balance of a human body, and which can relax muscular tension of the human body as much as possible in a condition where the human body extends along the direction of gravity while ensuring physiological curvature of the individual vertebrae. The medical chair has cranium position regulating means 7 and pelvis position regulating means 4 for respectively regulating the positions of the cranium and pelvis of a subject who sits on a seat. The regulating means 7 and 4 have a structure in which they butt against both right and left sides of the cranium and the pelvis, respectively to cause both planes centered in a right-and-left direction of the cranium and the pelvis to be in a same central plane which extends in the direction of gravity. An ideal condition of the body of the subject in which vertical and horizontal balances are achieved against the force of gravity can be achieved to ensure physiological curvature of vertebrae, and the condition can be maintained.
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