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流口水口水实际上是由唾液腺分泌的唾液。唾液不仅具有湿润口腔、溶解食物和便于吞咽的作用,而且可消化食物中的碳水化合物,还具有杀菌作用,防止口腔内细菌生长和繁殖。3～4个月的婴儿唾液腺发育逐渐成熟,唾液分泌量增加,但此时孩子吞咽口水的功能尚未健全,口腔较浅,闭唇与吞咽动作尚不协调,表现为常流口水。孩子长到6～7个月以后,由于正在萌出的牙齿对口腔内神经的刺激,造成唾液大量分泌,这时口水就流得更多。因此,以上两种情况属于正常的生理现象,不是病态,等到孩子渐渐长大,吞咽功能发育完整后,这种生理性流口水的现象就会自然消失。
Drooling is actually saliva secreted by the salivary glands. Saliva not only has moist mouth, dissolve food and easy to swallow, and can digest food carbohydrates, but also has a bactericidal effect, to prevent oral bacteria growth and reproduction. 3 to 4 months of infant salivary gland maturation, salivary secretion increased, but this time children swallowing saliva function is not perfect, shallow mouth, lips and swallowing movements are not coordinated, the performance of constant saliva. Children grow to 6 to 7 months later, due to the eruption of the teeth of the oral nerve stimulation, resulting in a large number of saliva secretion, when saliva flow more. Therefore, the above two cases belong to the normal physiological phenomenon, not pathological, wait until the child grows up, swallowing functional development is complete, this phenomenon of physiological drool will disappear.