3,4 Of these properties, handling and setting time of dental cements is of utmost importance.
For luting and lining cements, long working time and short setting time is required while for root canal sealers longer working and setting time is desirable.
Results reveals that blended cement need higher initial setting time as compare to ordinary Portland cement, in addition to this final setting time is also a little greater if comparing to OPC.
Figure 4 shows the correlation of setting time and compressive strength, which shows that as the age of the cement mortar increases it gains more strength.
A Vicat apparatus was used to measure standard consistence, and initial and final setting time after the reactants were mixed together and placed in a mould.
Standard consistence, and initial and final setting time tests on the PC, PFA-PC, MK-PC and MK-PFA-PC pastes were carried out using a Vicat apparatus in accordance with BS EN 196-3 (British Standards Institute 1995b).
2] to PCs has been recently reported (12) to reduce setting time and increase compressive strength.
Setting time experiments used a total of 72 specimens (n = 6) which were prepared by carefully pouring the cements into cylindrical metal molds (10 mm diameter x 1 mm) according to standardized procedures.
The working and setting time
of all the materials were temperature dependent.