Marginal leakage related to temperature change occurs to the greatest extent with_______________?
Correct answer: B. Unfilled resin
- A. Amalgam alloy
- B. Unfilled resin
- C. Composite resin
- D. Direct filling gold
Explanation
Unfilled resin has a relatively high coefficient of thermal expansion, so temperature changes produce greater dimensional mismatch and marginal leakage. Composite resin is less affected because inorganic filler reduces thermal expansion.
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