咬肌
臼齿
咀嚼
感觉系统
医学
解剖
牙科
生物
神经科学
作者
Norihiko Maeda,Toshikazu Suwa,Maika Ichikawa,Tamuro Masuda,Masayoshi Kumegawa
出处
期刊:Cells Tissues Organs
[S. Karger AG]
日期:1990-01-01
卷期号:137 (1): 19-24
被引量:20
摘要
The effects of easily chewable diets and unilateral extraction of upper molars on the masseter muscle were studied in developing mice. A liquid diet requiring no mastication suppressed the development of the masseter muscles more than a fine-grained diet, and extraction of unilateral upper molars also caused inhibition of muscle development. Moreover both unilateral extraction of upper molars and a liquid diet had an additive effect on the the suppression of the postnatal development of the masseter muscle and bilateral suppression of the development of the masseter muscle was induced following unilateral extraction of upper molars. These findings suggest that the sensory input from the sensory endings in the periodontal ligament may also play an important role in the postnatal development of the masseter muscle and that there may be some crossing pathways to convey the sensory input coming from the side of the extracted upper molars to the contralateral motor neurons via the interneuronal circuits.
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