Cements are:
  1. Fluoride and liquid
  2. Zinc, fluoride, and glass
  3. Chemical bonder and water
  4. Powdered oxide or glass plus a liquid
Explanation
Answer: D - Cements are composed of powdered oxide or glass plus a liquid that are either resin or acid-based. The compound is mixed for the use of crowns, inlays, veneers, and inlays.
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