A Physical Therapy Perspective on Temporomandibular Joint Dysfunction (TMD)
Written by Aviel Haberman, DPT
Temporary jaw pain, clicking, or tightness when chewing are often easily brushed off as incidental, but for many people, these symptoms are part of a broader condition known as temporomandibular joint dysfunction (TMD)—a common and treatable issue affecting the jaw joint and surrounding muscles.
What Is the TMJ?
The temporomandibular joint (TMJ) connects your jaw to your skull, just in front of the ear. It allows us to talk, chew, yawn, and move the jaw smoothly. Because it gets used constantly throughout the day, even small imbalances can lead to discomfort over time.
What Contributes to TMD?
TMD is best understood as a multifactorial condition, meaning there’s rarely just one cause. Instead, it develops from a combination of physical, behavioral, and sometimes systemic factors.
1. Muscle Overuse & Jaw Habits
- Teeth clenching or grinding (often during sleep)
- Daytime jaw tension (holding the teeth together at rest)
- Chewing gum frequently or eating tough foods
- Why this matters: These habits can overload jaw structures, leading to pain/fatigue.
2. Stress & Nervous System Sensitivity
- Emotional stress and anxiety can increase muscle tension
- The nervous system can become more sensitive, amplifying pain signals
- Why this matters: Many people notice their jaw symptoms worsen during stressful periods.
3. Posture & Movement Patterns
- Forward head posture or prolonged desk work
- Poor coordination of jaw movement (e.g., uneven opening)
- Why this matters: Posture doesn’t directly “cause” TMD, but it can influence how muscles and joints are loaded.
4. Sleep & Recovery
- Poor sleep quality or untreated sleep apnea
- Nighttime grinding or clenching
- Why this matters: Inadequate recovery can make symptoms more persistent.
5. Joint & Structural Factors
- Disc displacement within the joint
- Arthritis or joint irritation
- Previous injury or trauma to the jaw
- Why this matters: These may play a role, but they don’t always correlate with pain severity.
Signs You Should Seek Professional Help
Occasional jaw tightness can be normal—but persistent or worsening symptoms are worth evaluating. Consider seeing a physical therapist or dentist if you experience:
Jaw-Related Symptoms
- Pain in the jaw, face, or in front of the ear
- Clicking, popping, or locking of the jaw
- Difficulty opening or closing the mouth fully or symmetrically
- Pain with chewing, talking, or yawning
Associated Symptoms
- Frequent headaches (especially near the temples)
- Ear pain or a feeling of fullness (without infection)
- Neck and shoulder tension
- Tooth sensitivity or unexplained dental wear
Red Flags for Early Intervention
- Jaw locking (open or closed)
- Sudden changes in bite
- Symptoms lasting more than a few weeks
- Pain interfering with eating or sleep
How Physical Therapy Can Help
Physical therapy plays an important role in treating TMD by addressing the muscles, movement patterns, and contributing habits behind the symptoms.
Treatment may include:
- Gentle manual therapy for the jaw and surrounding muscles
- Exercises to improve jaw coordination and control
- Postural and ergonomic guidance
- Education on reducing clenching and tension habits
In some cases, collaboration with a dentist or other clinical specialist is indicated. Medical treatment for severe or ongoing jaw pain may include medications, Botox injections, or surgery. Prescription medications can reduce pain and muscle spasms. Injections provided by an orofacial pain specialist can treat muscle spasms, pain, and inflammation. In rare cases when other treatments are unsuccessful, surgical options such as arthrocentesis or joint replacement may be considered.
The Bottom Line
TMD is common—and highly treatable. The key is recognizing that jaw pain is often influenced by muscles, habits, and overall health, not just the joint itself.
If you’re noticing persistent symptoms, early support can make a significant difference in preventing long-term discomfort.
Quick Tip: Check Your Resting Position
Right now, check your tongue. Is it pressed against your lower teeth? For a “happy jaw,” the tip of your tongue should rest gently on the roof of your mouth (just behind the top teeth), your teeth should be slightly apart, and your lips should be closed.
