Different Setting Conditions Affect Surface Characteristics and Microhardness of Calcium Silicate-Based Sealers

Figure 2

(a) Scanning electron microscopy images of EndoSequence Bioceramic (BC; Brasseler USA, Savannah, GA, USA) sealer in different setting conditions. (A), (B), and (C) Layered planar-like crystalline structures (arrow) were mostly found in the BC control group. (D), (E), and (F) High proportion of amorphous structures (arrowhead) with seldom crystallized (arrow) structures were found. (G), (H), and (I) The fewest number of crystals are apparent. Surface XRD analysis and phase fraction of the EndoSequence BC Sealer stored for 14 days in 100% humidity only (b), initially exposed to phosphate-buffered saline (PBS) for 2 days (c) and acidic solution for 2 days (d).

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