Jaw Clicking and Locking (TMJ Disc Displacement): Symptoms, Causes & PT Treatment
Updated July 20261 minute read
The jaw joint has a small cushioning disc. If it slips out of its ideal position, you can get clicking or popping when you open (the disc "reducing"), or — if it stays out of place — catching, limited opening, or locking. Painless clicking alone often needs little beyond monitoring and habit care. Clicking with pain, catching, or locking responds well to jaw-focused physical therapy. A jaw locked open and unable to close needs prompt care.
What is TMJ disc displacement?
The disc inside the jaw joint can shift forward. "With reduction" means it clicks back into place as you open (causing the click); "without reduction" means it stays displaced and can limit opening or cause locking.
Symptoms
Common features are clicking or popping when opening or closing, sometimes catching, limited or deviated opening, and — in some cases — episodes where the jaw locks. Pain may or may not be present.
What causes it / risk factors
Clenching/grinding, jaw overuse or injury, joint laxity, and muscle imbalances contribute.
How it's diagnosed
A PT, dentist, or physician diagnoses it clinically from the click/lock pattern and jaw motion; imaging (MRI) is used in select cases.
Physical therapy treatment
What a PT does. Your therapist improves jaw movement control and coordination, reduces clenching and muscle overload, and restores comfortable opening. Exercises & progression (overview). Controlled jaw mobility and coordination, muscle relaxation, posture work, and habit changes. Recovery timeline. Many people improve over several weeks to a few months.
Treatment options compared
Conservative care (PT, habit changes, dental night guard) is first-line. Procedures are reserved for cases that don't respond, especially persistent locking with limited opening.
Red flags
A jaw locked open and unable to close needs prompt care. Also seek care for jaw pain after trauma, or jaw pain with chest/breathing symptoms (emergency).
Frequently asked questions
Sources (3)
- NIDCR: TMD (Temporomandibular Disorders). — NIDCR
- Al-Baghdadi M, et al. TMJ Disc Displacement without Reduction Management: A Systematic Review. J Dent Res. 2014. — PubMed
- Armijo-Olivo S, et al. Effectiveness of Manual Therapy and Therapeutic Exercise for Temporomandibular Disorders: Systematic Review and Meta-Analysis. Phys Ther. 2016. — PubMed
This article is for education only and isn't medical advice. Always talk to a licensed clinician about your specific situation.