pH and Antimicrobial Activity of Portland Cement Associated with Different Radiopacifying Agents

Table 4

Means and standard deviations of pH values for the different materials and periods.

	PC	PC + OBi	PC + OZr	PC + CT	ZOE
12 h	10.24±0.05^A	10.20±0.21^A	10.21±0.12^A	10.23±0.07^A	7.484±0.41^B
24 h	10.20±0.08^A	10.21±0.17^A	10.20±0.13^A	10.24±0.06^A	7.444±0.34^B
48 h	10.23±0.08^A	10.30±0.15^A	10.22±0.14^A	10.26±0.08^A	7.346±0.31^B
72 h	10.22±0.08^A	10.28±0.17^A	10.21±0.13^A	10.23±0.10^A	7.325±0.30^B

Same letters within the same period of time indicate statistically similar results (𝑃>0.05).
PC: Portland cement, OBi: bismuth oxide, OZr: zirconium oxide, CT: calcium tungstate, ZOE: zinc oxide and eugenol cement.