背景:躯干和头部之间的协调被认为对于行走稳定性很重要。最近的研究报告说,佩戴全口义齿可以改善步行过程中躯干的稳定性;然而,它对头部的影响尚未明确。
目的:本研究旨在阐明全口义齿对无牙老年人行走过程中头部稳定性的影响。
方法:20名无牙的老年人(11名男性和9名女性;平均年龄,78.6±5.8岁)使用全口义齿的人被纳入研究。加速度和角速度传感器被放置在参与者的眉毛上,下巴和腰部,他们被要求在两个条件下走20米的通道:有和没有假牙。用于评估头部稳定性的结果是加速度和角速度的方差值,峰峰值,谐波比,均方根,从传感器获得的差异和动态时间规整数据的积分值。采用配对t检验比较眉间加速度的方差值,和其他结果使用Wilcoxon符号秩检验进行比较。所有显著性水平设定为5%。
结果:在没有假牙的情况下加速,下巴的方差以及眉毛和下巴的峰峰值明显大于假牙。没有假牙的角度率,额和下巴的方差和峰峰值也明显大于假牙。
结论:行走时佩戴全口义齿可能会改善无牙老年人的头部稳定性并有助于行走稳定性。
BACKGROUND: Coordination between the trunk and head is considered important for walking stability. Recent studies have reported that wearing complete dentures could improve trunk stability during walking; however, its effect on the head has not been clarified.
OBJECTIVE: This study aimed to clarify the effect of complete dentures on head stability during walking in edentulous older adults.
METHODS: Twenty edentulous older adults (11 men and 9 women; mean age, 78.6 ± 5.8 years) who used complete dentures were included in the study. Acceleration and angle rate sensors were placed on the participants\' brow, chin and waist, and they were asked to walk a 20-m passage under two conditions: with and without dentures. The outcomes used to assess head stability were the variance values of acceleration and angle rate, the peak-to-peak values, harmonic ratio, root mean square, integrated values of the difference and dynamic time warping data obtained from the sensors. The variance values of the brow acceleration were compared using a paired t-test, and other outcomes were compared using a Wilcoxon signed-rank test. All significance levels were set at 5%.
RESULTS: In acceleration without dentures, the variance values of the chin and the peak-to-peak values of the brow and chin were significantly larger than with dentures. Angle rate without dentures, the variance values and the peak-to-peak values of the brow and chin were also significantly larger than with dentures.
CONCLUSIONS: Wearing complete dentures while walking might improve head stability and contribute to walking stability in edentulous older adults.