ガムそしゃく運動が身体重心動揺に及ぼす影響

  • 榎本 友彦
    日本歯科大学新潟歯学部歯科補綴学教室第3講座

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  • Influence of Gum Chewing on Body Sway While Standing.

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In the present study, with the view of elucidating the influence of gum chewing on the body sway, 14 subjects without subjective and objective abnormal equilibrium and stomatognatic functions (12 males and 2 females aged 23-28 years, averaging 24.2) were measured for the area, distance and standard deviation-area in mandibular rest position (NR), gum chewing (NC) and occlusal interference-given gum chewing (IC) according to the measurement criteria recommended by the Japan Society for Equilibrium Research.<BR>The following results were obtained:<BR>1. Compared with NR, all subjects in NC showed smaller values of each of the analytical items of area, distance and standard deviation-area. For the subject population, the difference was highly significant for each of the analytical items.<BR>2. NR and IC values showed their respective different relationships among subjects and analytical items. For the subject population, the difference between these two conditions was significant for each of the analytical items.<BR>3. Compared with IC, all subjects in NC showed smaller values of the analytical items of area and distance, and 11, 1 and 2 subjects showed smaller, equal and larger values, respectively of the item of standard deviation-area. However, the difference for the latter 2 subjects was not statistically significant. For the subject population, the difference between these two conditions was significant for each of the analytical items and to a great extent especially for the area and distance.<BR>4. The above results suggest that gum chewing has an inhibitory effect on the body sway.

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