![]() The second is a tongue position problem instead of the tongue lifting up against the palate (roof of the mouth) when swallowing, a “tongue thrust” occurs in which it moves into the space between the teeth. The first is an “anterior open bite,” in which the upper and lower front (anterior) teeth do not meet there is a space between them. It sounds like your son has two conditions that are sometimes related. An “open bite,” a space between the teeth, can be caused by prolonged thumb sucking, and then perpetuated by the presence of the tongue resting or thrusting between the teeth.
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