Restorative & Materials · single question

Which cement, used in direct or indirect restorations, is indicated to form a reparative (dentinal) bridge over the pulp?

  1. Zinc phosphate
  2. Amalgam
  3. Calcium-silicate / bioceramic cement (e.g., MTA, Biodentine)
  4. Composite resin
Show answer and explanation

Correct answer: C. Calcium-silicate / bioceramic cement (e.g., MTA, Biodentine)

  • A. Incorrect – a luting cement with no reparative dentin induction.
  • B. Incorrect – no bioactivity/bridge formation.
  • C. Correct – calcium-silicate (bioceramic/MTA-type) materials stimulate odontoblast-like cells to lay down a dentinal bridge; they are the pulp-capping material of choice.
  • D. Incorrect – not used directly on exposed pulp to induce a bridge.

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