system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
pH of freshly mixed MTA is:
assistant
The correct answer is  Mineral trioxide aggregate (MTA) is composed of tricalcium silicate, tricalcium aluminate, tricalcium oxide and silicate oxide.

Bismuth oxide is added to the mixture for radiopacity.
pH - 12.5 (when set).
pH of freshly mixed MTA is 10.
Setting time is 2 hours 45 minutes.
Compressive strength—40 MPa (immediately after setting) which increases to 70 MPa after 21 days.