Coefficient of thermal expansion of which of following is most similar to that of tooth ?
Correct answer: C. Silicate cement
- A. Gold inlay
- B. Acrylic resin
- C. Silicate cement
- D. Gold foil
Explanation
Silicate cement has a coefficient of thermal expansion close to that of tooth structure, reducing temperature-related dimensional mismatch at the interface. Gold and especially acrylic resin expand more than tooth.
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