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Diagnosis of Temporomandibular Disorders (TMD)

TMD can usually be diagnosed based on your symptoms and a thorough physical exam.

A physical exam may be completely normal despite symptoms, or may reveal:

  • Jaw or muscle tenderness
  • Muscle spasm in the area of the temporomandibular joint (TMJ)
  • Clicking, popping, or grating sounds and sensations when you open or close your jaw
  • Misalignment of the jaw or teeth or easy displacement of the jaw
  • Difficulty fully opening the mouth

The number and severity of symptoms and findings can allow TMD to be staged.

There are no specific tests available that can definitively diagnose TMD. If your symptoms are extreme, your healthcare provider may try the following:

  • Jaw x-rays are not usually helpful in diagnosing TMD, but they may:
    • Exclude other conditions that mimic TMD
    • Reveal other problems, such as fractures, dislocations, or systemic disease
  • Ultrasound—Pain in TMD most commonly originates outside the joint, primarily in muscles. Ultrasound can provide a view of the muscles adjacent to the joint.
  • CT scan
  • MRI scan
  • Arthrography—Rare, and may be used to evaluate the affected area if treatment methods are not working.
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References:

Puri P, Kambylafkas P, Kyrkanides S, Katzberg R, Tallents RH. Comparison of Doppler sonography to magnetic resonance imaging and clinical examination for disc displacement. Angle Orthod. 2006;76(5):824-829.
Siccoli MM, Bassetti CL, Sándor PS. Facial pain: a clinical differential diagnosis. Lancet Neurology. 2006;5(3):257-267.
Temporomandibular disorders. American Association of Oral and Maxillofacial Surgeons website. Available at:
...(Click grey area to select URL)
Published 2013. Accessed February 22, 2017.
Temporomandibular joint (TMJ) dysfunction. EBSCO DynaMed Plus website. Available at: http://www.dynamed.... Updated May 11, 2015. Accessed February 22, 2017.
TMJ. American Academy of Otolaryngology—Head and Neck Surgery website. Available at:
...(Click grey area to select URL)
Updated December 2010. Accessed February 22, 2017.
TMJ. Mouth Healthy—American Dental Association website. Available at:
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Accessed February 22, 2017.
TMJ (temporomandibular joint and muscle disorders). National Institute of Dental and Craniofacial Research website. Available at: https://www.nidcr.nih.gov/oralhealth/Topics/TMJ/TMJDisorders.htm. Updated April 2015. Accessed February 22, 2017.
Tognini F, Manfredini D, Melchiorre D, Bosco M. Comparison of ultrasonography and magnetic resonance imaging in the evaluation of temporomandibular joint disc displacement. J Oral Rehabil. 2005;32(4):248-253.
Last reviewed February 2017 by Michael Woods, MD, FAAP
Last Updated: 3/15/2015

 

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