The mean setting time of MTA is:
The setting time for MTA is lengthy, about 165 minutes for the initial set and less than 6 hours for the final set, which is a major drawback of using this cement.
Phillip's science of dental material 12th edition page 332
135 ± 5 min
145 ± 5 min
155 ± 5 min
165 ± 5 min