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吮拇癖多见于1岁以内的小儿,尤其在饥饿时,常常吮拇指或其他手指,以自宽慰;如果别人强行阻止,则必然引起情绪上的不满。吮拇指是生后“生理反射”的结果。吮拇癖也可见于2～5岁的小儿,尤其在疲劳、厌倦、疾病、恐惧或受到成人惩罚之后,可出现吮拇指的幼稚动作。一般地说,在出恒齿之前,如有吮拇癖对孩子无害,个别的被子可因长期刺激,造成经常吸吮的局部软组织增生。如果这种习惯在出恒齿之后还继续存在,则可影响下颌的发育,以致上下牙齿对合不齐而造成畸形。
Suck much more common in children less than 1 year old, especially in hunger, often sucking the thumb or other fingers to relieve themselves; if others forcibly stopped, it is bound to cause emotional dissatisfaction. Sucking thumb is the result of a postnatal “physiological reflex.” Thumb sucking can also be seen in children 2 to 5 years of age, especially after fatigue, tiredness, illness, fear or punishment by adults, there may be a naive sucking thumb action. In general, before the permanent teeth, if the thumb sucking is not harmful to the child, individual quilts can cause long-term stimulation, often sucking the local soft tissue hyperplasia. If this habit still exists after the permanent teeth, can affect the development of the jaw, so that the upper and lower teeth on the missing together caused by deformity.