The Hidden Impact of Retained Primitive Reflexes on Development and Oral Function

Every parent watches in awe as their newborn grasps a finger or turns their head to root for food. These automatic, involuntary movements are known as primitive reflexes. They are essential for a baby's survival during the first few months of life and form the foundation for all future brain and body development.

However, as a child grows and their nervous system matures, these reflexes are supposed to naturally fade away—a process called integration. When they don't fully integrate, they become retained primitive reflexes, which can quietly interfere with a child's movement, learning, behavior, and even their oral function.

At MyoMovement, we understand the profound connection between the body's foundational reflexes and the specialized muscles of the face and mouth.

What Are Primitive Reflexes?

Primitive reflexes develop in the womb and are present at birth. They act as the brain's "training wheels," helping the infant interact with the world before they have conscious control over their body.

For example:

•The Rooting Reflex: When you stroke a baby's cheek, they automatically turn their head and open their mouth to feed.

•The Sucking Reflex: Triggered when the roof of the mouth is touched, allowing the baby to nurse.

•The Moro (Startle) Reflex: A protective response to sudden movement or loud noises, causing the baby to throw their arms out and cry.

By the time a child is 6 to 12 months old, the higher centers of the brain should take over, replacing these automatic reflexes with voluntary, coordinated movements.

What Happens When Reflexes Are Retained?

If primitive reflexes remain active past infancy, the nervous system continues to react as if the child is still a baby. This means the brain and body have to work much harder to perform everyday tasks, leading to a wide range of challenges.

Children (and adults) with retained primitive reflexes often struggle with:

•Poor Posture and Coordination: Clumsiness, difficulty sitting still, or slouching.

•Learning Difficulties: Trouble with reading, writing, or visual tracking.

•Emotional Regulation: Anxiety, frequent meltdowns, or hypersensitivity to sensory input (light, sound, touch).

•Focus and Attention: Easily distracted or mislabeled as having ADHD.

The Connection to Oral Function and Myofunctional Therapy

The muscles of the face, mouth, and throat are deeply connected to the body's early reflex patterns. When specific reflexes are retained, they can directly cause or exacerbate orofacial myofunctional disorders (OMDs).

The Rooting and Sucking Reflexes

If the rooting or sucking reflexes fail to integrate, the mouth remains hypersensitive. This can lead to:

•Prolonged Oral Habits: Thumb sucking, finger sucking, or extended pacifier use, as the child constantly seeks oral stimulation.

•Picky Eating: Aversion to certain food textures due to oral hypersensitivity.

•Speech and Swallowing Issues: Difficulty transitioning from an infantile swallow (tongue thrust) to a mature adult swallow.

The Moro Reflex

A retained Moro reflex keeps the body in a constant state of "fight or flight." This chronic stress often leads to mouth breathing, as the body attempts to take in more oxygen to deal with perceived threats. Over time, mouth breathing alters facial growth, dental alignment, and sleep quality.

How Integration Therapy Helps

The good news is that retained primitive reflexes are not permanent. The brain is highly adaptable, and through targeted, repetitive movements, these reflexes can be successfully integrated at any age.

This is where primitive reflex integration therapy intersects with orofacial myofunctional therapy (OMT). At MyoMovement, we recognize that simply treating the symptoms—like a tongue thrust or mouth breathing—isn't always enough if the underlying reflex is still active.

A strong referral system and combination of therapies is where we see true change and healing occur.

Build a Strong Foundation with MyoMovement

If your child struggles with focus, coordination, emotional regulation, or oral habits like thumb sucking and mouth breathing, retained primitive reflexes and orofacial myofunctional disorders may be the missing piece of the puzzle.

At MyoMovement, we take a holistic approach to oral function and overall development. Contact us today to learn more and unlock your child's full potential and set the stage for a lifetime of health and confidence.