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A "tongue thrust" swallow pattern is a bit of a debatable topic in the orthodontic world...not the fact that some folks push there tongue forward when swallowing (especially with an openbite), but whether it is causative, or adaptive.
Sort of like what came first the chicken or the egg: did the swallow pattern make the openbite/flare the incisors, or does an individual just push their tongue forward to create a seal to swallow because of the way their mouth has developed. Many studies have been done looking at data like the duration of tongue pressure against the teeth, the amount of pressure while swallowing, the number of times a person swallows, resting tongue pressure, resting cheek pressures, etc.
Some people are quite passionate on both sides of the debate...advocates of correcting the swallow pattern, or largely ingoring it and just fixing the teeth/bite.
Just some food for thought!
![Very Happy :D](./images/smilies/icon_biggrin.gif)
Dr. S
PS...that dancing purple hippo cracks me up!