Experimental study for development of rabbit masticatory system depending on the style of sucking

不同吸吮方式对家兔咀嚼系统发育的实验研究

基本信息

批准号：
08835016
负责人：
NAGATA Junko
金额：
$ 1.6万
依托单位：
Kagoshima 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

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08835016/
关键词：
EMG Jaw movement Functional development Sucking Breast feeding Bottle feeding ウサギ顎運動径路離乳

项目摘要

To investigate the difference of developmental degree of masticatory function depending on sucking style such as breast or bottle feeding with elastic nipple, four infant rabbits in each group, had been fed for three weeks in this study.EMG of masseter muscle, digastric, styloglossus, genioglossus, mylohyoid and geniohyoid muscles with breast and bottle feeding, and x-ray movie when eating solid food for evaluating the tongue and jaw movement had been carried out simultaneously. Whole data gathered had been analyzed and discussed.The summary of results are as follows.1.The diference of developmental degree of feeding function1)Muscle activity :(1)Cycle length of muscle activity was longer in bottle feeding group than in breast feeding group.(2)Time lags activity : Time lags of activity onsets of digastric muscle from masseter muscle, and that of geniohyoid muscle from mylohyoid muscle were shorter in bottle feeding group.Muscle activity integration : Integration of masseter muscle was … More higher in breast feeding than in bottle feeding, on the other hand, digastric muscle was lower in breast feeding than in bottle feeding. Genioglossus and mylohyoid muscles were higher in bottle feeding group than in breast feeding group.2)Tongue and jaw movement : The bertical dimension of jaw movement were longer in breast than in bottle feeding. The horizontal dimension of tongue movment were longer in bottle feeding than in breast feeding.2.The difference of developmental degree of masticatory function1)Muscle activity :(1)Cycle length of muscle activity was linger in bottle feeding group than in breast feeding group.(2)Muscle activity integration : Integration of masseter muscle was higher in breast feeding than in bottle feeding. The reciprocity of digastric, masseter, styloglossus, gemioglossus muscles activity were lower in bottle feeding than in normal feeding.2)Jaw and tongue movment : The length of intake phase was shorter with small amount of jaw movement in normal feeding group than in bottle feeding group, on the contrally, the length of chewing phase was longer with large amount of jaw movement in normal feeding group than in bottle feeding group.These results that the difference of developmental degree of rabbit masticatory function and jaw movement depending on the style of sucking had existed which represents the deficiency of functional development of masticatory organ in case of bottle feeding rabbit. Less

为了研究咀嚼功能的发展程度的差异，具体取决于吮吸风格，例如乳房或弹性乳头喂养，每组四个婴儿兔子，在这项研究中已经喂了三个星期。进行类似。 Whole data gathered had been analyzed and discussed.The summary of results are as follows.1.The diference of developmental degree of feeding function1)Muscle activity:(1)Cycle length of muscle activity was longer in bottle feeding group than in breast feeding group.(2)Time lags activity: Time lags of activity onsets of digital muscle from massager muscle, and that of genioxyoid muscle from mylohyoid muscle were shorter in bottle喂食组。肌肉活动的整合：按母乳喂养的整合比在奶瓶喂养中要比奶瓶喂养更高，另一方面，母乳喂养的消化肌比奶瓶喂养要低。奶瓶喂养组中的Genioglossus和肌叶类肌肉高于母乳喂养组。2）舌头和下颌运动：颌骨运动的脑喂食尺寸比奶瓶喂养更长。舌喂食中的舌头运动的水平尺寸比母乳喂养更长。2。咀嚼功能的发育程度差异1）肌肉活动：（1）瓶中喂养组的肌肉活性的循环长度在奶瓶喂养组中徘徊。（2）肌肉活动的整合：乳腺喂食中的肌肉肌肉的整合比奶瓶喂养中更高。瓶装喂食中的二极释，按摩骨，gemioglossus肌肉活动的互惠率低于正常喂养。2）下颌和舌头运动：在奶油喂养组中，在奶牛喂养组中，在奶牛喂养组中的长度比正常喂食组的长度更短，在正常喂养组中，钳口运动的长度较小。这些结果表明，兔咀嚼功能和下颌运动的发展程度差异取决于吮吸的样式，这代表了在奶瓶喂养兔子的情况下，咀嚼器官功能发育的缺乏。较少的