Fig. 3

SEM images of cross-sections of two CPSCs: ERRM Putty (A1 - A5, B1 - B6) and iRoot FS (C1 - C5, D1 - D6), exposed to various environmental conditions: (A1 - D1) after 4 days setting with PBS (pH 7.4); (A2 - D2) after 14 days setting with PBS (pH 7.4); (A3 - D3) after 4 days setting with butyric acid (pH 5.4); (A4 - D4) after 14 days setting with butyric acid (pH 5.4); and (A5 - D5) after 4 days setting with butyric acid (pH 5.4) followed by 10 days setting with PBS. (A1 - A5, C1 - C5, × 500 magnification). (B1 - B6, D1 - D6, × 3,500 magnification). SEM images (B6, D6, ×3,500 magnification) of crystals in cross-section of each bioceramic cement and corresponding EDS analysis plots (A6, C6). Abbreviations: CPSCs: calcium phosphate silicate-based cements; ERRM Putty: EndoSequence Root Repair Material Putty; iRoot FS: iRoot Fast Set Root Repair Material; PBS: phosphate-buffered saline; SEM: scanning electron microscope