*2.7. pH Measurement*

The powder of each experimental calcium silicate-based cement was mixed with deionized water and osteogenic medium at a concentration of 5 mg/mL, and the mixture was placed in a 100% humidity incubator at 37 ◦C for 7 days. The pH of each liquid was evaluated using a digital pH meter which is adjusted prior calibration (Satorious Docu-pH Meter; Satorious AG, Goettingen, Germany). Three measurements were made for each cement solution. As a control, deionized water and osteogenic medium without experimental powder was also measured.
