Good Compressive Strength. Ions Calcium Release: Enhances the formation of mineralized tissues; provides the biological seal of perforations and total repair of damaged peri-radicular tissues. Hydrophilic: Can be used in humid areas without losing properties. High alkalinity: Antibacterial properties. Low solubility: Does not allow leakage. Calcium oxide: Promotes tissue Biocompatibility. Aggregated oxides: Great compressive strength. High radiopacity: Higher radiopacity than that of dentin, allowing excellent radiographic visualization.