The most common cause of TMJ ankylosis is______________?
Correct answer: D. Trauma
- A. Rheumatoid arthritis
- B. Osteoarthritis
- C. Childhood illness
- D. Trauma
Explanation
Trauma is the commonest cause of TMJ ankylosis because intra-articular bleeding and scarring can fuse the condyle to the temporal bone. Infection and inflammatory arthritis are less frequent causes.
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