Why is tongue extension/protrusion important when assessing gape in the breast feeding infant?

Newborns and infants can open their mouths naturally (ie yawn, etc) but the presence of the extrusion reflex brings the tongue forward in the infants mouth to facilitate latch.  When this reflex occurs the jaw also lowers further to support a nice, wide gape.  This is why, when we consider the tongue function in context of tongue tie rule out we observe the degree to which the anterior tongue comes forward.  I also train my eye to watch the jaw in this process.

The extrusion reflex of the tongue is suppressed around 4 months of age and serves as one of the readiness cues for spoon feeding.   It’s suppression allows the jaw and tongue to remain in a more neutral position as the food in introduced with (less and quickly resolved) thrust pattern.

baby-sticking-out-tongue-protrusion-640x426

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

Powered by WordPress.com.

Up ↑

%d bloggers like this: