EFFECTS OF EASILY CHEWABLE DIET AND UNILATERAL EXTRACTION OF UPPER MOLARS ON THE MASSETER MUSCLE IN DEVELOPING MICE
EFFECTS OF EASILY CHEWABLE DIET AND UNILATERAL EXTRACTION OF UPPER MOLARS ON THE MASSETER MUSCLE IN DEVELOPING MICE
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DOI：
10.1159/000146852
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发表时间：
1990-01-01
期刊：
影响因子：
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通讯作者：
KUMEGAWA, M
中科院分区：
文献类型：
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作者：
MAEDA, N;SUWA, T;KUMEGAWA, M
本实验以发育期小鼠为研究对象，研究了易咀嚼饲料和单侧拔除上颌磨牙对咬肌的影响。不需要咀嚼的流质饮食比细粒饮食抑制了咬肌的发育，并且单侧上磨牙的拔除也引起了肌肉发育的抑制。此外，单侧拔除上磨牙和流质饮食对咬肌的出生后发育的抑制具有累加效应，并且在单侧拔除上磨牙后诱导了咬肌发育的双侧抑制。这些结果表明，感觉末梢在牙周膜的感觉输入也可能在咬肌的生后发育中发挥重要作用，并可能有一些交叉通路，将来自拔牙的上磨牙的一侧的感觉输入通过神经元间回路传递到对侧的运动神经元。
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.