Abstract
This study reports a facile method to synthesize the calcium silicate-based cement with an enhanced radiopacifying performance. Sr-substituted Ca3SiO5 (Ca3−xSrxSiO5, x = 0.0 ~ 0.2) was prepared by solid-state reaction, and its phase, hydration behavior, and radiopacity were investigated and compared with those of 10 wt% Bi2O3-added Ca3SiO5. A nearly single-phase Ca3SiO5 was synthesized at 1400 °C and the solubility limit of Sr into Ca3SiO5 was approximately 3.3 mol % (x = 0.1). The Sr substitution did not affect the size and morphology of Ca3SiO5 powder. The extent of hydration was slightly delayed in Sr-substituted Ca3SiO5, but the hydration products were the same composing of fiber-like calcium silicate hydrate (C–S–H) and plate-like calcium hydroxide (Ca(OH)2). The radiopacity of Ca3SiO5 was significantly enhanced with Sr substitution and it was slightly higher than that of Bi2O3-added Ca3SiO5 at a similar concentration. Consequently, Sr-substituted Ca3SiO5 can be a promising dental root canal filling material with an improved radiopacifying property.
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Acknowledgement
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2020R1A5A6017701) and 2015 Engineering-Dentistry Interdisciplinary Research Grant (860-20150009) jointly funded by College of Engineering and School of Dentistry, Seoul National University, Seoul, Korea. The Institute of Engineering Research at Seoul National University provided the research facilities for this work.
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You, J., Yoo, JS., Kum, KY. et al. Hydration behavior and radiopacity of strontium substituted Ca3SiO5 cement. J. Korean Ceram. Soc. 58, 330–336 (2021). https://doi.org/10.1007/s43207-021-00114-8
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DOI: https://doi.org/10.1007/s43207-021-00114-8