Clarification of the Mode of Masticatory Movements in Patients Wearing Denture (s) and the Design of Foods for the Elderly

阐明戴义齿患者的咀嚼运动方式及老年人食物的设计

• 批准号: 09680023
• 负责人: ARAI Eiko
• 金额: $ 2.18万
• 依托单位: Shizuoka University (1998)Shimane University (1997)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 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-09680023/
• 关键词: masticatory movements; videofluorography; denture-wearing person; plate-wearing; X線映画法

Since the life span of human teeth is about 50 years, many of the elderly must masticate foods with denture(s). To date, it has remained totally unclear what masticatory movements are made for proper food textures when denture-wearing persons masticate foods with different textures, and what feelings they receive from the foods. Therefore, we videofluorographically recorded masticatory movements occurring when denture-wearing subjects masicated samples with different textures, in order to clarify masticatory movements characteristics of denture-wearing persons, and then we discussed food designs that are easy to masticate by denture-wearing persons.The videofluorographic study on resin-plate-wearing subjects revealed that time needed to recognize a texture was prolonged, in addition to associated prolongation of time until the start of breaking a sample into pieces, when the sensory stimulative information was blocked by covering the incisive papilla, regardless of the hardness of samples, compared with that observed under non-blocked condition. When the sensory stimulative information was not blocked, an adequate method of breaking, either compression or crushing, was selected according to the hardness of samples, whereas all samples were broken by crushing, regardless of their hardness, when blocked.From these results, denture-wearing persons were thought to have slight difficulty in recognition of texture, compared with non-denture-wearing persons. Thus foods designed to have slightly emphasized hardness to facilitate the recognition of texture through a resin-plate seemed to be desirable for denture- wearing persons.

由于人类牙齿的寿命约为50年，许多老年人必须使用假牙咀嚼食物。迄今为止，仍然完全不清楚当戴假牙的人咀嚼具有不同质地的食物时，针对适当的食物质地进行什么样的咀嚼运动，以及他们从食物中获得什么样的感觉。因此，我们通过荧光录像记录了戴义齿者咀嚼不同质地样本时的咀嚼运动，以阐明戴义齿者的咀嚼运动特征，进而讨论戴义齿者易于咀嚼的食物设计。对戴树脂板的受试者的荧光录像研究显示，识别质地所需的时间延长，除了相关的直到开始将样品破碎成碎片的时间延长之外，与在非封闭条件下观察到的相比，当通过覆盖切牙乳头而封闭感觉刺激信息时，无论样品的硬度如何。当感觉刺激信息未被阻断时，根据样品的硬度选择适当的破碎方法，无论是压缩还是破碎，而当阻断时，所有样品都通过破碎而破碎，无论其硬度如何。从这些结果来看，戴假牙的人与不戴假牙的人相比，在识别纹理方面有轻微的困难。因此，设计成稍微强调硬度以便于通过树脂板识别质地的食品似乎是戴义齿的人所希望的。