Radio opacity to composite resins is rendered by_______________?
Correct answer: B. Barium glass and strontium glasses
- A. Silica glass
- B. Barium glass and strontium glasses
- C. Organic matrix
- D. Fluoride particles
Explanation
Barium and strontium glasses contain high-atomic-number elements that absorb X-rays and make composite radiopaque. Silica glass and the organic resin matrix do not provide sufficient radiopacity.
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