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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
The elemental composition of (A) MCPM and (B–D) calcium phosphates containing F or Sr in the fracture surface of the representative specimens. The calcium phosphate precipitates were only observed in the specimens containing MCPM and Sr/F-BGNPs.