EMG EFFECTS OF WEANING METHODS AND PERIODS ON ACQUIREMENT OF CHEWING FUNCTION IN GUINEA PIGS

断奶方法和断奶时间对豚鼠咀嚼功能获得的肌电图影响

• 批准号: 07838045
• 负责人: IINUMA Mitsuo
• 金额: $ 1.47万
• 依托单位: ASAHI UNUVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07838045/
• 关键词: GUINEA PIG; WEANING PERIOD; WEANING METHOD; CHEWING PHYTHM FORMATION; INTRAORAL PRESSURE; EMG; 発達; 離乳; 吸啜; 咀嚼; 筋電図

The purpose of present study was to clarify the effect of different weaning periods and methods on the development of the masticatory function in guinea pigs. The results were as follows :1.When guinea pigs were breeded with breast fed and hard food (control), hard food, soft food and milk from 3days after birth, chewing rhythm formation time was significantly delayd in the other three group compared with the control group, however regular chewing rhythm was formed in all groups.2.When weaning period was delayd, chewing rhythm formation time was earlier. By separation with the dam, the chewing rhythm was more confused than that of before separation, therefore it is suggested that breeding with a dam is a positive factor for making the chewing rhythm formation.3.Guinea pigs were divided at 3 days after birth from dam, and at 7,14,21,30 days after birth they were retuned to dam again. Though when guinea pigs were returned till 14 days after birth there was no effects to acquire the chewing rhythm, when they were returned after 21 days it was delayd.4.When guinea pigs fed the soft or hard food before weaning period, EMG of masseter of soft food group was no change according to the day and similar with drinking, but that of hard group was gradually regular and long of duration. Lower jaw of hard fed group was bigger than that of soft food group, but upper was no difference.

本研究旨在探讨不同的断奶时间和方法对豚鼠咀嚼功能发育的影响。结果如下：1.当豚鼠出生后3d开始喂饲硬食(对照组)、硬食、软食和牛奶时，与对照组相比，其余三组的咀嚼节律形成时间均显著延迟，但均形成规律性的咀嚼节律。与母体分离后，豚鼠的咀嚼节律比分离前更加混乱，提示与母体交配是形成咀嚼节律的积极因素。3.豚鼠出生后3天从母体分离，出生后7、14、21、30天重新回到母体。4.断奶前喂软食或硬食时，软食组咬肌肌电无明显变化，与饮食组相似，但硬食组逐渐规律化，持续时间较长。硬食组的下颌骨大于软食组，但上颌骨无差异。

项目成果

LU CHAOMING,RITSUKO TAIRA,YOSHIHISA TAMAI AND MITSUO IINUMA: "EFFECT OF WEANING PERIOD ON THE DEVELOPMENT OF THE CHEWING FUNCTION IN GUINEA PIGS" JPN.J.PED.DENT.35(4). 715-721 (1997)

陆超明、平良律子、玉井吉久、饭沼光雄：“断奶期对豚鼠咀嚼功能发育的影响”JPN.J.PED.DENT.35(4)。

盧兆民、平良梨津子, 玉井良尚、飯沼光生: "モルモットにおける離乳時期が咀嚼機能獲得に及ぼす影響" 小児歯科学雑誌. 35(4). 715-721 (1997)

陆兆民、平良子、玉井义直、饭沼光男：“断奶期对豚鼠咀嚼功能获得的影响”《儿科牙科杂志》35(4) 715-721 (1997)。

盧 兆民、平良 梨津子、玉井 良尚、飯沼 光生: "モルモットにおける離乳時期が咀嚼機能獲得に及ぼす影響" 小児歯科学雑誌. 35(4). 715-721 (1997)

Zamin Roh、Ritsuko Taira、Yoshinao Tamai、Mitsuo Iinuma：“断奶期对豚鼠咀嚼功能获得的影响”《儿科牙科杂志》35(4) 715-721 (1997)。

盧兆民・平良梨津子・飯沼光生・吉田定宏: "モルモットにおける離乳方法、時期が咀嚼発達に及ぼす影響(抄)" 小児歯科学雑誌. 34巻2号. 383- (1996)

陆兆民、平良子、饭沼光男、吉田定博：“断奶方法和时机对豚鼠咀嚼发育的影响（摘录）”《儿科牙科杂志》，第 34 卷，第 2 期，383-（1996 年）。