Thumb Sucking & Pacifiers: How Prolonged Use Impacts Orofacial Development

Thumb sucking and pacifier use are incredibly common in infancy and early childhood—and for good reason. These habits can be soothing, regulating, and developmentally appropriate in the early years. However, when these habits continue beyond the typical developmental window, they can begin to impact how the mouth, face, and airway grow.

At Midwest Myofunctional, we often work with children (and even adults) whose oral habits quietly shaped their orofacial development over time. Awareness is the first step toward prevention and early support.

When Does it Become a Concern?

In general:

• Pacifier use is best reduced and eliminated by around age 2-3

• Thumb or finger sucking that continues beyond age 3-4 may begin to affect oral structures

The frequency, duration, and intensity of the habit matter more than the habit itself.

Signs it May be Time for Support

Consider seeking guidance if your child:

• Continues thumb sucking or pacifier use past age 18 months-2 years

• Has difficulty stopping the habit independently

• Mouth breathes at rest

• Snores, sleeps with mouth open, or has restless sleep

• Has speech, feeding, or orthodontic concerns

How Myofunctional Therapy Can Help

Orofacial Myofunctional Therapy (OMT):

• Supports elimination of oral habits in a positive, developmentally appropriate way

• Establishes correct tongue and lip posture

• Improves swallowing and breathing patterns

• Works alongside dental and orthodontic care for long-term stability

Our goal isn’t just to stop a habit—it’s to support healthy growth, function, and airway development.