No abstract

Tricalcium silicate (C 3 S) and dicalcium silicate (C 2 S) are the main components related with the hydration process of mineral trioxide aggregates (MTAs) for endodontic materials. In this study, we investigate the influence of different ratios of C 3 S and C 2 S in a series of MTA samples with (100-x)C 3 S-xC 2 S-18ZrO 2 (x = 0, 10, 15, 34, and 100) on their physical and chemical characteristics, hydration process, and microhardness properties. The chemical compositional properties of different samples are measured using X-ray diffraction, X-ray photoelectron spectrometry, and scanning electron microscopy. The physical and microhardness properties are also investigated after the standard hydration process (ISO 6876:2021).Generally, the sample with higher C 3 S ratio induces the faster hydration, which results in decreased fluidity as well as shorter working and setting times. The microhardness generally decreases with larger C 3 S ratio.

No abstract