Characterization of Tetracalcium Phosphate/Monetite Biocement Modified by Magnesium Pyrophosphate

Magnesium pyrophosphate modified tetracalcium phosphate/monetite cement mixtures (MgTTCPM) were prepared by simple mechanical homogenization of compounds in a ball mill. The MgP<sub>2</sub>O<sub>7</sub> was chosen due to the suitable setting properties of the final cements, i...

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Main Authors: Radoslava Stulajterova, Lubomir Medvecky, Maria Giretova, Tibor Sopcak, Lenka Luptakova, Radovan Bures, Eva Szekiova
Format: Article
Language:English
Published: MDPI AG 2022-03-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/15/7/2586
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author Radoslava Stulajterova
Lubomir Medvecky
Maria Giretova
Tibor Sopcak
Lenka Luptakova
Radovan Bures
Eva Szekiova
author_facet Radoslava Stulajterova
Lubomir Medvecky
Maria Giretova
Tibor Sopcak
Lenka Luptakova
Radovan Bures
Eva Szekiova
author_sort Radoslava Stulajterova
collection DOAJ
description Magnesium pyrophosphate modified tetracalcium phosphate/monetite cement mixtures (MgTTCPM) were prepared by simple mechanical homogenization of compounds in a ball mill. The MgP<sub>2</sub>O<sub>7</sub> was chosen due to the suitable setting properties of the final cements, in contrast to cements with the addition of amorphous (Ca, Mg) CO<sub>3</sub> or newberite, which significantly extended the setting time even in small amounts (corresponding ~to 1 wt% of Mg in final cements). The results showed the gradual dissolution of the same amount of Mg<sub>2</sub>P<sub>2</sub>O<sub>7</sub> phase, regardless of its content in the cement mixtures, and the refinement of formed HAP nanoparticles, which were joined into weakly and mutually bound spherical agglomerates. The compressive strength of composite cements was reduced to 14 MPa and the setting time was 5–10 min depending on the composition. Cytotoxicity of cements or their extracts was not detected and increased proliferative activity of mesenchymal stem cells with upregulation of osteopontin and osteonectin genes was verified in cells cultured for 7 and 15 days in cement extracts. The above facts, including insignificant changes in the pH of simulated body fluid solution and mechanical strength close to cancellous bone, indicate that MgTTCPM cement mixtures could be suitable biomaterials for use in the treatment of bone defects.
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spelling doaj.art-013cbd52490b45b5b54f6e2ce136c8632023-11-30T23:34:11ZengMDPI AGMaterials1996-19442022-03-01157258610.3390/ma15072586Characterization of Tetracalcium Phosphate/Monetite Biocement Modified by Magnesium PyrophosphateRadoslava Stulajterova0Lubomir Medvecky1Maria Giretova2Tibor Sopcak3Lenka Luptakova4Radovan Bures5Eva Szekiova6Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, SlovakiaDivision of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, SlovakiaDivision of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, SlovakiaDivision of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, SlovakiaDepartment of Biology and Physiology, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, SlovakiaDivision of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, SlovakiaInstitute of Neurobiology of Biomedical Research Center of SAS, Soltesovej 4–6, 040 01 Kosice, SlovakiaMagnesium pyrophosphate modified tetracalcium phosphate/monetite cement mixtures (MgTTCPM) were prepared by simple mechanical homogenization of compounds in a ball mill. The MgP<sub>2</sub>O<sub>7</sub> was chosen due to the suitable setting properties of the final cements, in contrast to cements with the addition of amorphous (Ca, Mg) CO<sub>3</sub> or newberite, which significantly extended the setting time even in small amounts (corresponding ~to 1 wt% of Mg in final cements). The results showed the gradual dissolution of the same amount of Mg<sub>2</sub>P<sub>2</sub>O<sub>7</sub> phase, regardless of its content in the cement mixtures, and the refinement of formed HAP nanoparticles, which were joined into weakly and mutually bound spherical agglomerates. The compressive strength of composite cements was reduced to 14 MPa and the setting time was 5–10 min depending on the composition. Cytotoxicity of cements or their extracts was not detected and increased proliferative activity of mesenchymal stem cells with upregulation of osteopontin and osteonectin genes was verified in cells cultured for 7 and 15 days in cement extracts. The above facts, including insignificant changes in the pH of simulated body fluid solution and mechanical strength close to cancellous bone, indicate that MgTTCPM cement mixtures could be suitable biomaterials for use in the treatment of bone defects.https://www.mdpi.com/1996-1944/15/7/2586calcium phosphate biocementmagnesium pyrophosphatesetting processmesenchymal stem cellsgene expression
spellingShingle Radoslava Stulajterova
Lubomir Medvecky
Maria Giretova
Tibor Sopcak
Lenka Luptakova
Radovan Bures
Eva Szekiova
Characterization of Tetracalcium Phosphate/Monetite Biocement Modified by Magnesium Pyrophosphate
Materials
calcium phosphate biocement
magnesium pyrophosphate
setting process
mesenchymal stem cells
gene expression
title Characterization of Tetracalcium Phosphate/Monetite Biocement Modified by Magnesium Pyrophosphate
title_full Characterization of Tetracalcium Phosphate/Monetite Biocement Modified by Magnesium Pyrophosphate
title_fullStr Characterization of Tetracalcium Phosphate/Monetite Biocement Modified by Magnesium Pyrophosphate
title_full_unstemmed Characterization of Tetracalcium Phosphate/Monetite Biocement Modified by Magnesium Pyrophosphate
title_short Characterization of Tetracalcium Phosphate/Monetite Biocement Modified by Magnesium Pyrophosphate
title_sort characterization of tetracalcium phosphate monetite biocement modified by magnesium pyrophosphate
topic calcium phosphate biocement
magnesium pyrophosphate
setting process
mesenchymal stem cells
gene expression
url https://www.mdpi.com/1996-1944/15/7/2586
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