Direct pulp capping agents are typically which of the following?

• A. Calcium hydroxide, MTA, Biodentine.
• B. ZOE alone.
• C. Calcium hydroxide with resin.
• D. Amalgam alone.

Answer: (A)

Direct pulp capping aims to preserve pulp vitality by placing a material that is biocompatible, seals well, and stimulates the formation of dentin bridges. Calcium hydroxide has long been used because it creates an alkaline environment that promotes healing and reparative dentin. Mineral trioxide aggregate (MTA) and Biodentine are newer bioactive calcium silicate materials that provide a stronger seal, tolerate moisture, and more reliably induce dentin bridge with minimal inflammation. Other options lack the necessary combination of bioactivity and sealing ability to support pulp healing when directly in contact with exposed pulp—zinc oxide-eugenol or amalgam alone don’t promote healing effectively, and a calcium hydroxide–resin combination doesn’t represent a standard, reliably sealing direct pulp cap. Therefore, calcium hydroxide, MTA, and Biodentine are the typical direct pulp capping agents.