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Metal-Doped brushite Cement for Bone Regeneration

Journal of Bionic Engineering 2023年第6期20卷 2716-2731页

作者： Muhammad Aqib Aneela Anwar Humayun Ajaz Samina Akbar Ahsan Manzoor Maham Abid Zohaib Waheed Qudsia Kanwal Department of Chemistry University of Engineering and TechnologyGT RoadLahore54890Pakistan Department of Chemistry University of LahoreLahore5400Pakistan

For the past several years,calcium phosphate cement was used in the biomedical *** biocompatibility,good bioactivity,self-setting qualities,minimum setting degree,appropriate toughness,and simple shape to accommodate any difficult geometry are among their most notable *** phosphate has some types and brushite is one of the most attractive mineral for bone repair *** is extensively employed in filling fractures and trauma treatments as a bone substituted *** kind of material can potentially be used as a medicine delivery *** replacement of metal,such as magnesium,zinc,and strontium ions,into the calcium phosphate structure is a major research topic these *** cement has low mechanical strength and quick setting *** is possible to produce biomaterials with higher mechanical *** adding metal that are great potential in controlling cellular density when included into *** a result,it is a successful method to develop quite well regenerative *** paper provides a detailed summary of the present achievements of metal-doped brushite cement for bone repair and healing *** major purpose of this work is to give a simple but thorough analysis of current successes in brushite cement doped with Zn,Mg,Sr,and other ions as well as to highlight new advancements and *** impact of metal replacement on cement physical and chemical properties,including microstructure,setting time,injectability,mechanical property,and ion release,is *** metal-doped cement has osteogenesis,angiogenesis,and antibacterial properties,as well as their prospective utility as drug carriers,also considered.

关键词： Calcium phosphate brushite Bone cement Metal dopants Bone regeneration

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Microstructural features of flower like Fe brushite

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Progress in Natural Science:Materials International 2017年第4期27卷 520-526页

作者： S.I.El-dek S.F.Mansour M.A.Ahmed M.K.Ahmed Materials Science and Nanotechnology Department Faculty of Post Graduate Studies for Advanced Science Beni-Suef University Physics Department Faculty of ScienceZagazig University Materials Science Lab(1) Physics Department Faculty of Science Cairo University

The iron doped brushite(Fe-DCPD) nano particles were synthesized via co-precipitation method with Fe concentrations(0 ≤x≤ 1) in steps 0.2. The influence of iron concentration on the crystallinity, particle shape,morphology, optical, magnetic and electrical properties was investigated. The results showed that iron doping content is the crucial factor in the variation of physical properties. The particle shape changed from spheres at x=0.2 to be fiber network at x = 0.8. The saturation magnetization(Ms) increased from 0.4(emu/g) at x = 0.2 to 1.6(emu/g) at x = 0.8 which is considered more than four times with a considerable decrease of coercive field.

关键词： Bioceramic Calcium phosphate brushite Fe brushite Magnetic hydroxyapatite

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Dielectric Property Studies of Biologically Compatible brushite Single Crystals Used as Bone Graft Substitute

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Journal of Biomaterials and Nanobiotechnology 2013年第2期4卷 119-122页

作者： M. P. Binitha P. P. Pradyumnan Department of Physics University of Calicut Kerala India.

The electrical characterization of bone is essential for the better understanding of the role of electrical stimulation in bone remodeling. Calcium Hydrogen Phosphate Dihydrate or brushite (CaHPO4 2H2O) has been used in bone substitution owing to their fast resorption under physiological condition. brushite is a suitable matrix for osteoconductive bone grafts. In this work, Calcium Hydrogen Phosphate single crystals have been grown by single diffusion gel growth technique. The powder XRD studies revealed the monoclinic structure of the grown crystals. The vibrational analysis of the crystals is done with FTIR spectroscopy and the major functional groups and their assigned vibrations are discussed. The frequency dependence of dielectric constant and ac conductivity at different temperatures have been studied in detail. This study shows decrease in the dielectric constant with the increase in frequency and temperature. The variation of ac conductivity is found to be increasing with frequency and decreasing with temperature.

关键词： Bone Grafts brushite Gel Growth Dielectric Properties AC Conductivity

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In situ magnesium calcium phosphate cements formation: From one pot powders precursors synthesis to in vitro investigations

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Bioactive Materials 2020年第3期5卷 644-658页

作者： M.A.Goldberg P.A.Krohicheva A.S.Fomin D.R.Khairutdinova O.S.Antonova A.S.Baikin V.V.Smirnov A.A.Fomina A.V.Leonov I.V.Mikheev N.S.Sergeeva S.A.Akhmedova S.M.Barinov V.S.Komlev A.A.Baikov Institute of Metallurgy and Materials Science Russian Academy of Sciences119334Leninsky av49MoscowRussian Federation M.V.Lomonosov Moscow State University Department of Chemistry119991Leninskie Gory1MoscowRussian Federation Federal State Budgetary Institution National Medical Research Radiological Center of the Ministry of Health of the Russian Federation 1252842nd Botkinsky pass.3MoscowRussian Federation

Calcium phosphate cements are of great interest for researchers and their applications in medical practice ***,they have a number of drawbacks including the insufficient level of mechanical properties and low degradation ***(MgNH4PO4)-based cements,which grew in popularity in recent years,despite their neutral pH and acceptable mechanical performance,release undesirable NH4+ions during their *** issue could be avoided by replacement of ammonia ions in the cement liquid with sodium,however,such cements have a pH values of 9–10,leading to ***,the main goal of this investigation is to optimize the composition of cements to achieve the combination of desirable properties:neutral pH,sufficient mechanical properties,and the absence of cytotoxicity,applying Na2HPO4-based cement *** this purpose,cement powders precursors in the CaO-MgO-P2O5 system were synthesized by one-pot process in a wide composition range,and their properties were *** optimal performance was observed for the cements with(Ca+Mg)/P ratio of 1.67,which are characterized by newberyite phase formation during setting reaction,pH values close to 7,sufficient compressive strength up to 22±3 MPa(for 20 mol.%of Mg),dense microstructure and adequate matrix properties of the *** set of features make those materials promising candidates for medical applications.

关键词： Magnesium calcium phosphate cement Stanfieldite Whitlockite Newberyite brushite In vitro investigations

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Role of Strontium on the Crystallization of Calcium Hydrogen Phosphate Dihydrate (CHPD)

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Journal of Minerals and Materials Characterization and Engineering 2011年第7期10卷 625-636页

作者： K. Suguna C. Sekar Department of Bioelectronics and Biosensors Alagappa UniversityKaraikudi-630003 TN India. Department of Physics Sri Sarada College for Women Salem -636 016 TN India.

Calcium hydrogen phosphate dihydrate (CHPD, CaHPO4· 2H2O) or brushite is found quite frequently in urinary calculi (stones). Crystallization of brushite has been carried out in sodium metasilicate (SMS) gel with and without adding ‘Sr’ as additive. In pure system, dicalcium phosphate anhydrous (DCPA, CaHPO4) or monetite and hydroxyapatite (HA, Ca5(PO4)3(OH)) grew along with brushite. The presence of Sr suppressed the formation of HA and enhanced the number and size of monetite crystals and changed the morphology of brushite crystals from needle shape to octopus-like shape. The samples were characterized by powder & single crystal X-ray diffraction (XRD), scanning electron microscopy (SEM), Xray fluorescence spectroscopy (XRF), Fourier transform infrared spectroscopy (FTIR) and thermal analyses (TG-DTA).

关键词： brushite Crystal growth Sr additive SEM.

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Development of an Experimental Phosphate-Calcium Cement with a Whisker-Like Structure

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Materials Sciences and Applications 2012年第11期3卷 763-767页

作者： Hideaki Narusawa Yukimichi Tamaki Takashi Miyazaki Department of Conservative Dentistry Division of Dental Materials and Technology School of Dentistry Showa University Tokyo Japan

In a previous study, the authors tried to synthesize dental materials from dental waste, which was accomplished with alginate impression materials and gypsum. A powder was set by mixing it with phosphate solution. Fibrous curled crystals were found through SEM observation. The present study shows a detailed analysis of the crystals. XRD analysis indicated the crystals are brushite. A unique profile of the crystal shows it can be a good apatite precursor or cell scaffold;however, this hypothesis requires further examination.

关键词： Calcium Phosphate Whisker Diatomite Scaffold DCPD brushite Bone Regenerative

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