One of the claims for the superiority composite resin restoration over silicate cement restorations is that the resin restorations_____________?
Correct answer: A. Are practically insoluble in oral fluids
- A. Are practically insoluble in oral fluids
- B. Prevent galvanic action
- C. Adapt to the walls of the cavity better
- D. Have a higher coefficient of thermal expansion
Explanation
Composite resin is practically insoluble in oral fluids, whereas silicate cement is more vulnerable to oral-fluid dissolution. Its higher coefficient of thermal expansion is a disadvantage, not a claim of superiority.
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