Definition for Tongue-thrust reflex

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Tongue thrust (also called reverse swallow or immature swallow) is the common name of orofacial muscular imbalance, a human behavioral pattern in which the tongue protrudes through the anterior incisors during swallowing, speech, and while the tongue is at rest. Nearly all young children exhibit a swallowing pattern involving tongue protrusion, but by the age of six most have switched to a normal swallowing pattern. People who tongue thrust do it naturally and are usually unaware of the behavior.