Should Baby’s Lips Be Flanged While Nursing?

While a flanged lower lip and neutral upper lip *can* be a visual indication of a deep latch, it is only one sign among many others.

When it comes to attaining a deep latch, function matters over form. If both you and baby are comfortable while nursing and baby is gaining weight appropriately, you do not need to make adjustments.

Image credit: Advanced Dentistry of Amarillo

If your baby is unable to flange their lower lip/maintain a neutral upper lip at breast and you are experiencing discomfort while nursing, this *may* be an indication of an oral restriction. If you notice this, do not flange their lips manually! This is likely an important compensation that your baby is using to latch effectively onto the breast and maintain a seal. Instead, continue techniques and positions to promote a deep latch and reach out to an IBCLC for hands-on assistance. If this does not solve the problem, seek evaluation for oral ties.