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Effects of Changes of Mandibular position and Mandibular movement on Distribution of Foot Bottom Pressure

下颌位置和下颌运动变化对足底压力分布的影响

基本信息

批准号：
09470443
负责人：
MORITA Osami
金额：
$ 6.59万
依托单位：
The Nippon Dental University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09470443/
关键词：
Foot Bottom Pressure Rest Position of Mandibule Gum Chewing Body Sway 体平衡機能主咀嚼非咀嚼

项目摘要

An investigation was made on the distribution of foot bottom pressure during the mandibular movements using a measuring apparatus for foot bottom pressure. Six healthy persons who had no subjective and objective abnormalities in the stomatognathic system and the equilibrium functions were used as the subjects. The subjects were regarded to be subjectively aware of the major habitual chewing side. The rest position of mandibule and the left-right gum chewing were chosen as the test conditions of mandibular movement. Furthermore, gum chewing test in both the habitual chewing side and the other side was performed and the body sway was found smaller during left-right gum chewing than in the rest position of mandibule. This was consistent with the results of previous reports. When body sway was analyzed as the fundions of X,Y-components, significant differences in the X-component (left-right) of the body sway were not found between the rest position of mandibule and the left-right gum chewi … More ng. The differences in Y-component (antero-posterior) were significant between them, i.e., the body sway was smaller in gum chewing than in the rest position of mandible. Since similar tendency was also seen by the analysis of body sway in the habitual chewing side test, it was likely that there was no influence due to the chewing side of each subject. When the distribution of foot bottom pressure was estimated on the basis of these results, the number of points at which foot bottom pressure was detected was larger in left-right gum chewing test than in the rest position of mandibule test. And the magnitnde of the pressure was also larger in the former. Thus, it was indicated that the distribution of foot bottom pressure was much changed by gum chewing. The present results suggest that the subjects kept balance on foot bottom adapting to the mandibular movements for gum chewing and also head position changes associated with the movement. In addition, the foot bottom pressure during loading of mouth guard was measured. A custom-made mouth guard type 4, specified by ADA was applied to the subjects. The results showed that there was no significant difference in body sway between the rest position of mandibule and the time of mouth guard loading. Therefore, mouth guard loading was concluded to have little effects on body sway Less

利用足底压力测量仪对下颌运动过程中足底压力的分布进行了研究。6名口颌系统和平衡功能无主观和客观异常的健康人被用作受试者。认为受试者主观上意识到主要的习惯性咀嚼侧。选择下颌静止位和左右咀嚼口香糖作为下颌运动的测试条件。此外，还进行了习惯咀嚼侧和对侧咀嚼口香糖的测试，发现左右咀嚼口香糖时的身体晃动比下颌休息位时要小。这与以前报告的结果一致。以身体摆动作为X、Y分量的函数进行分析时，下颌静止位和左右咀嚼牙龈位的身体摆动X分量（左右）无显著性差异 ...更多信息 ng. Y分量（前后）的差异在它们之间是显著的，即，咀嚼口香糖时的身体摆动幅度小于下颌静止位时的身体摆动幅度。由于在习惯性咀嚼侧测试中的身体摇摆分析中也观察到类似的趋势，因此很可能不存在由于每名受试者的咀嚼侧造成的影响。当根据这些结果估计足底压力的分布时，在左右咀嚼口香糖测试中检测到足底压力的点的数量大于在下颌骨测试的休息位置。前者的压力也较大。结果表明，咀嚼口香糖对足底压力分布有很大的影响。研究结果表明，受试者在咀嚼口香糖时保持足底平衡，同时也适应了咀嚼口香糖时下颌运动的头部位置变化。此外，还测量了护齿器加载过程中足底压力。受试者使用ADA规定的定制护齿器4型。结果表明，下颌骨静止位和戴护齿器时间对人体摆动无显著影响。因此，得出的结论是，护齿器负载对身体摇摆的影响很小