Coefficienty of thermal expansion of tooth enamel is closest to_______________?
Correct answer: C. GIC
- A. Slicate cement
- B. Composite
- C. GIC
- D. Polycarboxylate
Explanation
Enamel has a thermal expansion coefficient of approximately 11 ppm/°C, which is closest to that of glass ionomer cement. Composites generally expand much more than tooth structure.
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