How Myofunctional Therapy Supports Orthodontic Treatment

Teeth are not set in stone — they are held in position by a balance of forces from the tongue on the inside, the lips and cheeks on the outside, and the jaw and bone structure underneath. When these forces are in balance, teeth tend to stay in alignment. When they are not, teeth drift.

A tongue that rests low in the mouth instead of on the palate fails to provide the outward support the upper arch needs. A tongue that thrusts forward during swallowing pushes the front teeth out with every swallow — up to a thousand times per day. Mouth breathing encourages an open-mouth posture that removes the stabilizing pressure of the lips. These muscular imbalances are among the most common drivers of crowding, open bites, and other orthodontic problems.

Studies estimate that orthodontic relapse — teeth shifting back toward their original positions after treatment — affects a significant percentage of patients. Retainers help, but they are a mechanical solution to what is fundamentally a muscular problem.

If a patient finishes braces but continues to tongue thrust, mouth breathe, or rest with the tongue on the floor of the mouth, the same forces that caused the original misalignment will continue to act on the teeth. Over time, this leads to crowding, spacing, and bite changes that can undo years of orthodontic work.

Orofacial myofunctional therapy retrains the muscles to support the results that orthodontics achieves. The core goals of therapy in an orthodontic context are establishing proper tongue resting posture on the palate, eliminating tongue thrust swallowing patterns, promoting nasal breathing and lip seal, and correcting any other oral habits that create imbalanced forces on the teeth.

Many orthodontists now refer patients for myofunctional therapy either before, during, or after orthodontic treatment. Before treatment, therapy can improve the oral environment so that orthodontic mechanics work more efficiently. During treatment, it supports the tooth movements and helps the patient maintain good oral posture. After treatment, it is the single most effective way to protect against relapse.

The ideal time to begin myofunctional therapy depends on the patient's age and orthodontic timeline. For children who have not yet started orthodontic treatment, early myofunctional intervention can address tongue posture and breathing issues that may reduce the severity of orthodontic problems or shorten treatment time.

For patients currently in braces or aligners, therapy can run concurrently to maximize results. For adults who have already experienced relapse, therapy can help stabilize the teeth in their corrected positions and improve the chances of lasting alignment with or without retreatment.