Restorative & Materials · single question
A patient reports cold sensitivity on tooth #20. Which of the following could NOT be the cause?
Show answer and explanation
Correct answer: D. A partially erupted third molar
- A. Microleakage at a defective margin readily produces thermal sensitivity.
- B. Exposed dentinal tubules from recession are a classic cause of cold sensitivity.
- C. Reversible pulpitis is defined by sharp cold sensitivity that resolves on stimulus removal.
- D. Correct. A partially erupted third molar is far distal to #20 (mandibular second premolar) and cannot produce localized cold sensitivity there. Pericoronitis causes dull posterior pain, not cold sensitivity in the premolar region.
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