The necessity for the tongue exercise observed from aging change of the tongue moving ability.

通过对青年和老年齿状突的舌动和咀嚼功能的比较，表明老年人正在通过延长舌头接触上颌内大片区域的时间来补充形成食物团所需的工作量，以应对随年龄增长而发生的变化。结果提示，老年齿状突舌锻炼是必要的。这些现象在老年全口义齿佩戴者中表现得更为明显。全口义齿佩戴者必须进行更多的舌部练习，并认为有必要增加义齿基托的腭部厚度。

From comparison of the tongue movement with masticatory function of the young and elderly dentate, it was suggested that the elderly were coping with the change that took place with aging by supplementing the workload necessary for the formation of the bolus of food by extending the duration of tongue contact over a large area within the palate. The results suggested that elderly dentate were necessary to take the tongue exercise. These phenomenon appeared more clearly in the elderly complete denture wearers. The complete denture wearers had to take the more tongue exercise, and thought to be necessary to give the thickness to the palatal part of the denture base.