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Study groups 1-3
| Group | Sample size (n) | Materials under study | Manufacturer | Composition |
| Group 1 | 15 | MTA Fillapex | Angelus, Londrina, Brazil | resins (salicylate, diluting, natural), bismuth trioxide, nanoparticulated silica, mineral trioxide aggregate, pigments |
| Group 2 (positive control) | 15 | Roth 811 | Roth's International, Chicago, IL | Powder: Zinc oxide, bismouth bicarbonate, barium sulfate, dehydrated tetraboric sodium Liquid: Chemically pure eugenol |
| Group 3(negative control) | 15 | Unfilled |
