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Clinical Presentation Of Temporomandibular Disorder (TMD) Practice Test

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Which factor is commonly associated with TMD due to psychological or emotional stress?
Correct Answer:
Stress
Explanation:
Psychological or emotional stress drives TMD by increasing jaw muscle activity and promoting parafunctional behaviors like teeth clenching and grinding. When stress elevates, the jaw muscles stay chronically tense, and bruxism (especially at night) subjects the temporomandibular joint and surrounding muscles to repeated, excessive forces. Over time, this overuse leads to muscle pain, fatigue, headaches, and sometimes limited jaw opening or joint noise. So, the factor tied to the psychological aspect is stress itself, because it initiates the muscle tension and parafunctional activity that contribute most directly to TMD.

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