Forsterite Nanopowder: Structural Characterization and Biocompatibility Evaluation

Naghiu, Marieta-Adriana; Gorea, Maria; Mutch, Elaine; Kristály, Ferenc; Tomoaia-Cotişel, Maria

doi:10.1016/j.jmst.2013.04.007

Cited by 65 publications

(48 citation statements)

References 28 publications

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“…6(a)), the FTIR spectrum of the composite scaffold exhibited the characteristic spectral bands related to forsterite and BG. The peaks related to the typical peaks of forsterite occurred at 888.05, 952.93 (SiO 4 stretching), at 467.29, 509.35 (SiO 4 bending) and at 419.63 cm À1 (MgO 6 modes) [17][18][19]. In addition, the bands at 551.40, 607.67 and 1037.25 cm À1 were assigned to PÀO bending vibration of BG [20,21].…”

Section: Scaffoldsmentioning

confidence: 94%

Bioactivity Improvement of Forsterite-Based Scaffolds with nano-58S Bioactive Glass

Deng

Gao

et al. 2014

Materials and Manufacturing Processes

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Forsterite-based composite scaffolds with interconnected pore architecture were successfully manufactured via selective laser sintering. The nano-58S bioactive glass (BG) was added to forsterite for purpose of improving the bioactivity of the composite scaffolds. The effect of nano-58S BG contents on the biological behavior and mechanical properties was investigated. The results showed that the composite scaffolds could induce the formation of apatite compared with the pure forsterite scaffolds. Moreover, with increasing nano-58S BG, the scattered spherical apatite particles accumulated continuously and covered the whole surface. At last the apatite layer became sponge-like shape. The presence of apatite was confirmed with scanning electron microscopy equipped with energy dispersive spectroscopy, X-ray diffraction and Fourier transform infrared spectroscopy. In addition, MG-63 cells adhesion was enhanced with increase in the amount of the nano-58S BG. Besides, the maximum compressive strength was 43.9 AE 1.1 MPa when the nano-58S BG was 20.0 wt%. This study indicated that the composite scaffolds have a potential for bone tissue engineering.

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Section: Scaffoldsmentioning

confidence: 94%

Bioactivity Improvement of Forsterite-Based Scaffolds with nano-58S Bioactive Glass

Deng

Gao

et al. 2014

Materials and Manufacturing Processes

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“…TEM images have been recorded with JEOL standard software. Atomic force microscopy (AFM) images were obtained using the AFM JEOL 4210 equipment, operated in tapping mode [32][33][34][35][36][37][38][39][40][41], with standard cantilevers having silicon nitride tips (resonant frequency in the range of 200-300 kHz, spring constant 17.5 N/m). The particles were adsorbed (horizontal adsorption) from their aqueous dispersion for 10 s on glass.…”

Section: Methodsmentioning

confidence: 99%

Low Crystallinity Nanohydroxyapatite Prepared at Room Temperature

Mocanu¹,

Balint²,

Garbo³

et al. 2017

Studia UBB Chemia

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ABSTRACT. In order to obtain a low crystalline nanohydrxyapatite (HAP), suitable for biomedical application, a new synthesis procedure was developed, based on the aqueous precipitation method, at room temperature, without any additives. Accordingly, lyophilized HAP powders, both calcined and non calcined, were prepared, and characterized by XRD, TEM and AFM imaging, FTIR spectroscopy, zeta potential and BET measurements. The results confirmed HAP as the only phase present. The high porosity of this nanomaterial is attained. The nanoparticle size and shape as well as the crystallinity degree of the obtained HAP samples were also determined.

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“…Atomic force microscopy analysis was carried out on a JEOL 4210 AFM apparatus, operated in tapping mode [27][28][29][30][31][32][33][34][35], using standard cantilevers with silicon nitride tips (resonant frequency in the range of 200-300 kHz).…”

Section: Methodsmentioning

confidence: 99%

Portland cement enriched with hydroxyapatite for endodontic applications

Avram¹,

Gorea²,

Balint³

et al. 2017

Studia UBB Chemia

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Endodontic cement based on calcium silicate has been the focus of many studies. However, the quality of resulted endodontic cement needs improvement. This paper focuses on endodontic cement obtained from Portland cement enriched with two types of hydroxyapatite, simple and doped with 5% Zn. Hydroxyapatites were synthesized using a wet precipitation method and investigated by X-ray diffraction, FTIR, TEM and AFM. From a structural point of view, both hydroxyapatites were obtained in a single crystalline phase, containing particles in the nanometric range, as judged by XRD, TEM and AFM. FTIR analysis presents O-H and P-O bands specific to those in pure hydroxyapatite, confirming a hydroxyapatite lattice in both materials. Several experimental compositions of commercial Portland cement mixed with hydroxyapatite were prepared. The influence of stoichiometric and Zn doped hydroxyapatite on the resulted endodontic cement was observed in the setting time. The setting time for both cements decreased exponentially at both temperatures (22 ⁰C and 37 ⁰C). The normal consistency water remains constant for all experimented slurries.

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Forsterite Nanopowder: Structural Characterization and Biocompatibility Evaluation

Cited by 65 publications

References 28 publications

Bioactivity Improvement of Forsterite-Based Scaffolds with nano-58S Bioactive Glass

Bioactivity Improvement of Forsterite-Based Scaffolds with nano-58S Bioactive Glass

Low Crystallinity Nanohydroxyapatite Prepared at Room Temperature

Portland cement enriched with hydroxyapatite for endodontic applications

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