Abstract
Mineral trioxide aggregate (MTA) has gained attention as a bioactive endodontic material used for root-end filling, root repair, pulp cap**, and iatrogenic root perforations, owing to its biocompatibility, high strength, and good sealing ability. Herein, physicochemical properties of MTA depending on the ratio of tricalcium silicate (C3S) and dicalcium silicate (C2S) was examined. A series of calcium silicate mixtures CSM of (100–x)C3S-xC2S (x = 0, 10, 14, 25, and 100) were prepared with 18 wt.% ZrO2 addition. The pH of the hydrated CSM samples in Dulbecco’s modified Eagle’s medium (DMEM) solvent were increased to 10.7–12.1 from 7.55 of free DMEM, primarily owing to Ca(OH)2 production during setting reaction of C3S and C2S. The solubilities of the hydrated CSM samples in deionized water were examined; the samples with high C2S content exhibited relatively low solubility mainly due to the longer setting time and smaller amount of Ca(OH)2 produced by C2S setting reaction compared to C3S. The flow of the CSM samples was measured by thickness of the hydrated samples under 120 g (ISO 6876:2012), which decreased with increasing C2S content, which indicates that higher C2S contents enhance penetration ability and workability of the MTA.
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This work was supported by the Technology Development Program (S3319649), funded by the Ministry of SMEs and Startups (MSS, Korea).
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Lee, S.W., Park, O., Kang, S. et al. Physicochemical characteristics of mineral trioxide aggregate depending on the ratio of di- and tricalcium silicates. J. Korean Ceram. Soc. 60, 1028–1035 (2023). https://doi.org/10.1007/s43207-023-00325-1
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DOI: https://doi.org/10.1007/s43207-023-00325-1