What is the pH of MTA?

The correct answer indicates that the pH of MTA (Mineral Trioxide Aggregate) is approximately 12.5. MTA is a cement-like material used in various dental procedures, particularly in pulp capping, root-end filling, and as a repair material for perforations. Its high pH is crucial for its therapeutic effects; a more alkaline environment promotes biological healing and discourages the growth of bacteria.

The alkaline nature of MTA, with its pH typically ranging from 10.0 to 12.5 when mixed, aligns with its role in bioactivity and biocompatibility. The elevated pH contributes to the formation of hydroxyapatite and fosters a conducive environment for the regeneration of hard tissues. Thus, understanding the pH of MTA is essential for dental professionals when considering its applications in endodontics or restorative dentistry.