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Developmental Changes in Tongue Movement during Chewing in Infants Time-lapse Observation by Ultrasonography

超声延时观察婴儿咀嚼过程中舌运动的发育变化

基本信息

批准号：
08835021
负责人：
OHTSUKA Yoshiaki
金额：
$ 1.41万
依托单位：
Showa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

项目摘要

Although the tongue plays important roles in chewing and swallowing movements, the changes of tongue movement over the course of time have rarely been studied from an objective standpoint.The purpose of the present study is to clarify the time-lapse changes of tongue movement during chewing. The subject of the present study was an infant whose development from five months to three years of age was recorded. While the infant was eating baby cookies, the infant's tongue movement on the frontal section was displayd visually by ultrasonic diagnosis. The time-lapse changes of the tongue movement toward the right and left directions and the movement of the tilted backside of tongue were qualitatively analyzed. We succeeded in modeling the time-lapse changes of tongue movement by using the visual processing system for a time-series reconstruction of tongue movement. Furthermore the infant's lip and jaw movement were recorded by a video camera and their functions were evaluated. The relationsh … More ip between the results of the functional evaluation and the time-lapse changes of tongue movement during chewing which were recorded by ultrasonography was studied and the following results were obtained.1)The initial tilting movement of the backside of tongue was observed by ultrasonography starting eight months after birth. As the infant grew, the tongue moved toward the right and left alveolar ridges, the backside of the tongue tilted and a retraction was formed on the backside of tongue.2)According to the results of extemal observation, the right and left angles of mouth retracted asymmetrically ten months after birth. If this retraction is regarded as the lateral jaw excursion, the simultaneous existence of a relationship between the tongue movement and lateral jaw movement can be suggested.3)According to the results of external observation performed 14 months after birth, the pursing movement of the lips was noticed. Ultrasonography revealed the frequent movement by which the food was pushed towards the right and left side on the backside of tongue. The stabilized movement was recognized 19 months after birth. These observations suggested the existence of coordination between the lips, cheeks, jaws and tongue. Less

虽然舌头在咀嚼和吞咽运动中起着重要的作用，但舌头运动随时间的变化很少从客观的角度进行研究。本研究的目的是澄清咀嚼过程中舌头运动的时间推移变化。本研究的对象是一名婴儿，记录了他从5个月到3岁的发育情况。通过超声诊断直观显示婴儿吃饼干时舌在额部的运动。对舌体左右运动和舌背倾斜运动的时移变化进行定性分析。我们成功地模拟了舌头运动的时间推移变化，通过使用视觉处理系统的时间序列重建舌头运动。此外，婴儿的嘴唇和下颌运动的摄像机记录和他们的功能进行了评估。关系 ...更多信息结果表明：（1）出生后8个月开始，超声观察到舌背的初始倾斜运动。随着年龄的增长，舌向左右牙槽嵴方向移动，舌背倾斜，舌背形成回缩。2）外部观察结果显示，出生后10个月左右口角回缩不对称。如果把这种回缩看作是下颌的侧向移动，则可以证明舌运动和下颌侧向运动之间同时存在关系。3）根据出生后14个月的外部观察结果，注意到嘴唇的后缩运动。超音波检查显示，食物在舌背上被推向左右两侧的频繁运动。稳定的运动在出生后19个月被确认。这些观察结果表明，嘴唇，脸颊，下巴和舌头之间存在协调。少