Orthodontic Treatment for Patients with TMJ Problems

Temporomandibular joint (TMJ) disorders — collectively referred to as temporomandibular dysfunction (TMD) — are complex conditions that can significantly affect a patient’s quality of life. They may present as jaw pain, clicking or locking of the joint, limited mouth opening, headaches, or referred pain in the face, neck, or ear region.

The relationship between orthodontics and TMJ disorders is frequently misunderstood. Orthodontic treatment is not a treatment for TMD, and malocclusion alone is rarely the primary cause of TMJ symptoms. However, orthodontic treatment can play an important adjunctive role in the comprehensive management of certain patients with TMJ problems — particularly where the bite, the occlusal forces, or the position of the teeth are contributing to or perpetuating the joint condition.

This practice has experience assessing and treating patients with a history of TMJ disorders, and works collaboratively with oral medicine physicians, physiotherapists, maxillofacial surgeons, and other specialists involved in the patient’s care.

Understanding the Relationship Between Orthodontics and TMD

The evidence on the relationship between malocclusion and TMD is clear on several key points:

• Malocclusion is not a reliable predictor of TMD, and most people with irregular teeth do not develop TMJ problems
• Orthodontic treatment does not routinely cause TMD, and does not reliably cure it
• There are specific clinical situations where dental occlusion, tooth position, or the relationship between the jaws may contribute to ongoing joint loading or joint strain, and where correction may form part of a broader management plan

In other words, the role of orthodontics in TMD management is specific, limited, and best understood in the context of a thorough assessment of the joint, the muscles, and the occlusion — not as a standalone treatment for TMJ symptoms.

When Is Orthodontic Treatment Appropriate for Patients with TMD?

Orthodontic treatment may be considered as an adjunct in patients with TMD in the following circumstances:

Occlusal instability following TMD treatment. Where disc repositioning, splint therapy, or other TMD treatments have altered the patient’s resting jaw position, orthodontic treatment may be used to reorganise the dentition to match the therapeutically derived jaw relationship — stabilising the outcome and making it easier for the patient to maintain the improved position.

Significant occlusal discrepancy contributing to muscle strain. In some patients, a significant discrepancy between the first point of tooth contact (retruded contact position) and the habitual bite position results in ongoing muscle activity and joint loading. Where this discrepancy is clinically significant and contributing to the patient’s symptoms, occlusal correction through orthodontics may be part of the management plan.

Pre-prosthetic or pre-surgical preparation. Where TMD management involves restorative treatment or surgery, orthodontic treatment may be needed to ensure the dentition is in the appropriate position to receive that work.

Patients with a malocclusion who also have TMD. Having both conditions does not mean one is causing the other — but it does mean that any orthodontic treatment planned for the malocclusion must be carefully designed to work with, rather than against, the patient’s joint health. Treatment timing, force application, and the target bite position must all be considered in the context of the existing joint condition.

What to Expect from an Orthodontic Assessment in the Context of TMD

A patient presenting with TMD who is also seeking orthodontic treatment, or who has been referred by another clinician, will receive a thorough assessment that includes:

• A detailed history of TMJ symptoms — onset, duration, current status, and treatment received
• Clinical examination of the joints and muscles of mastication
• Evaluation of the occlusion, including the relationship between the retruded contact position and the intercuspal position
• Radiographic and, where indicated, advanced imaging review (including CBCT or MRI where relevant joint imaging is available)
• A clear explanation of the relationship — or absence of relationship — between the patient’s occlusion and their TMJ symptoms
• An honest discussion of what orthodontic treatment can and cannot be expected to achieve in the context of TMD

Where the patient is already under the care of a specialist in oral medicine, physiotherapy, or oral and maxillofacial surgery, communication with that clinician is maintained and all relevant information is shared before treatment recommendations are made.

Treating Patients with Active TMD

Orthodontic treatment should generally not be initiated while TMD symptoms are active, unstable, or poorly controlled. Moving teeth in a patient whose jaw position is still changing, or whose joint condition is progressing, risks completing treatment to a bite that no longer reflects the patient’s functional jaw position.

In practice, this means:

• Active, symptomatic TMD should be stabilised before orthodontic treatment begins
• Splint therapy or other conservative measures may be indicated in the first instance
• Orthodontic treatment timing is agreed collaboratively with the clinicians managing the TMD
• Patients are monitored carefully during treatment for any change in joint symptoms

Book a Specialist Assessment

If you have a history of TMJ problems and are considering orthodontic treatment — or if you have been referred by another clinician for an orthodontic assessment in the context of TMD — book a consultation for a thorough, specialist evaluation.