Synthesis, Bioactivity, and Antimicrobial Studies on Zinc Oxide Incorporated Into Nanohydroxyapatite

Hanna, A. A.; Khorshed, Lobna A.; El‐Beih, Ahmed A.; Sherief, Marwa A.; Khashen, Amany El; El‐Bassyouni, Gehan T.

doi:10.21608/ejchem.2019.12988.1812

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…Some studies report antibacterial activity against Staphylococcus aureus (Gram positive) and Esherichia coli (Gram negative). The diameters of the bacterial inhibition zones vary in the first case between 11 and 14 mm and in the second case between 21 and 23 mm [ 40 , 41 ].…”

Section: Discussionmentioning

confidence: 99%

Formulation and Characterization of New Experimental Dental Composites with Zirconium Filling in Different Forms

Mohajon,

Prodan,

Moldovan

et al. 2024

Materials

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Short glass fibers are generally used in posterior dental restorations to enhance the mechanical properties and improve the material microstructure. Two resin-based composites (S0 and SF) were formulated and characterized to investigate the influence of zirconium in their characteristics and properties. The organic part of the investigated materials was the same (BisGMA, TEGDMA, and a photochemical polymerization system), and in the inorganic part, besides quart, glassA, and hydroxylapatite with Zn, sample S0 contained strontium glass with zirconium and sample SF contained fiber powder of chopped zirconium. The samples were characterized by the degree of conversion (DC), mechanical properties, water sorption (WS), scanning electron microscopy (SEM), atomic force microscopy (AFM) before and after the WS test, and antimicrobial properties. The results obtained were subjected to one-way ANOVA and Tukey’s statistical tests. Both samples had a high DC. Regarding the mechanical properties, both samples were very similar, except DTS, which was higher for the composite without fibers. After 14 days, the WS value of the SF sample was lower than that of the S0 sample. Water caused significant changes in the topography of the SF sample, but thanks to its antimicrobial properties and the diffusion phenomenon, SF had a more pronounced antimicrobial effect. This study shows that the addition of appropriate amounts of Sr-Zr-glass powder gives the material in which it is added similar properties to material containing chopped zirconium glass fiber powder. According to the antimicrobial test results, resin composites containing experimental zirconia fillings can be considered in future in vitro clinical studies for posterior reconstructions with significantly improved mechanical properties.

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Section: Discussionmentioning

confidence: 99%

Formulation and Characterization of New Experimental Dental Composites with Zirconium Filling in Different Forms

Mohajon,

Prodan,

Moldovan

et al. 2024

Materials

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“…In 2019, Hanna et al prepared HA/ZnO biocomposites using sol-gel technique and they acclaimed a rise in the HA crystallite size upon involvement of ZnO [20]. In view of the drawbacks of their sol gel technique for instance; the high cost of the chemicals, large volume shrinkage and cracking all through the drying process other preparation techniques were required.…”

Section: Introductionmentioning

confidence: 99%

Some optical and microstructure characteristics of effective cost ZnO-containing hydroxyapatite

Mahdy¹,

Sherif²,

Kenawy³

et al. 2022

Phys. Scr.

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Metal oxide like zinc oxide (ZnO) is recognized to be one of the versatile inorganic compounds due to its physical properties. Crystalline compositions, morphology, particle size, and chemical bonds of pure hydroxyapatite (HA) and ZnO/HA were characterized by X-ray diffraction (XRD), Scanning and transmission electron microscopy (SEM and TEM), Fourier transform infrared spectroscopy (FT-IR), and Raman scattering detected crystalline and bond structure. Nanocomposites were crystallized in a main monoclinic phase of HA and a minor hexagonal phase of ZnO with particle size (18-29 nm) and grain size (75-200 nm) for the synthesized samples were identified. Moreover, the existence of the phosphate, carbonate ions, and hydroxyl groups in the HA and its composites structure was assured by the FT-IR assessment. The optical bandgap (Eg) of HA showed two transitions at 3.24 and 4.37 eV; these values decreased with the incorporation of ZnO. The determining optical and photoluminescence properties confirmed the presence of ZnO content in the HA matrix.

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“…Incorporation of some elements in minor traces to nano HAP particles induces antibacterial and antifungal activity to the composites than pure HAP only [16]. Recent studies were carried to doped some rare earth element in very small amount to HAP nanoparticles to improves their properties [17] as mechanical properties of HAP can be improved by the doping of lanthanum [18].…”

Section: Introductionmentioning

confidence: 99%

Effect of Incorporation of Lanthanum and Cerium-doped Hydroxyapatite on Acrylic Bone Cement Produced from Phosphogypsum Waste

2019

Self Cite

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T HIS study demonstrates the utilization of phosphogypsum waste for preparation of hydroxyapatite, lanthanum-doped hydroxyapatite and cerium-doped hydroxyapatite. Three concentrations of doping for each rare earth elements were prepared (0.25, 0.5, 0.75 weight %) respectively to be used as nanoparticles fillers additive to enhance the antibacterial activity, mechanical properties and bioactivity of conventional polymethyl methacrylate based bone cements. The prepared nanoparticles fillers are incorporated manually in 20 weight % to conventional polymethyl methacrylate bone cement to achieve polymethyl methacrylate cement composites. The results revealed that cerium-doped in 0.5 weight % with hydroxyapatite / polymethyl methacrylate cement composite permits remarkable increase in antibacterial activity against Staphylococcus aureus, while preserving a reasonably adequate compressive strength, and showed much higher calcium and phosphorus ions release (P-value ≤ 0.05). Within limitation of this study, the results are indicating the opportunity of the innovative bone cement for dental and orthopedic applications.

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Synthesis, Bioactivity, and Antimicrobial Studies on Zinc Oxide Incorporated Into Nanohydroxyapatite

Cited by 5 publications

References 13 publications

Formulation and Characterization of New Experimental Dental Composites with Zirconium Filling in Different Forms

Formulation and Characterization of New Experimental Dental Composites with Zirconium Filling in Different Forms

Some optical and microstructure characteristics of effective cost ZnO-containing hydroxyapatite

Effect of Incorporation of Lanthanum and Cerium-doped Hydroxyapatite on Acrylic Bone Cement Produced from Phosphogypsum Waste

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