Structure and dissolution behavior of MgO&amp;ndash;P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt;&amp;ndash;TiO&lt;sub&gt;2&lt;/sub&gt;/Nb&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; (Mg/P &amp;ge; 1) invert glasses

Lee, Sungho; Maeda, Hirotaka; Obata, Akiko; Ueda, Kyosuke; Narushima, Takayuki; Kasuga, Toshihiro

doi:10.2109/jcersj2.123.942

Cited by 15 publications

(2 citation statements)

References 45 publications

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“…The chemical durability of PIGs was improved by increasing the Ca/P ratio. 2,11) 65CaO30P 2 O 5 5Nb 2 O 5 glass exhibits high durability; however, the released amount of Ca 2+ ions from the glass was 0.4 mM for 7 days, which was over 4 times larger than the amount of Zn 2+ ions released from 65ZnO30P 2 O 5 Nb 2 O 5 glass. ZnO is known as an intermediate oxide, 12) i.e., in certain glasses, some of ZnO acts as a network former.…”

Section: Introductionmentioning

confidence: 93%

Structural Analysis of 65ZnO–30P2O5–5Nb2O5 Invert Glass Using X-ray Photoelectron Spectroscopy

et al. 2019

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The 65ZnO30P 2 O 5 5Nb 2 O 5 (ZnPNbO) glass is one of the promising candidate antibacterial biomaterials; it is a safe material since the release of Zn 2+ ions from the glass is well-controlled. To discuss the origin of this controlled release from the view point of its glass structure, the amount and state of bridging oxygen in the glass was examined using X-ray photoelectron spectroscopy, and compared with those in 65CaO 30P 2 O 5 5Nb 2 O 5 (CaPNbO) glass. The number of POP bonds in ZnPNbO glass was larger and that of PONb bonds was smaller than those in CaPNbO glass. This was linked with the formation of a large number of POZn bonds. The outermost shell electron density of the cations in ZnPNbO glass decreased, and as a result, the binding energy of each element increased. These might be closely related to the controlled release of Zn 2+ ions.

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Section: Introductionmentioning

confidence: 93%

Structural Analysis of 65ZnO–30P2O5–5Nb2O5 Invert Glass Using X-ray Photoelectron Spectroscopy

et al. 2019

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“…Phosphate invert glasses (PIG) were developed by our group for biomedical applications 26–29 . PIGs easily introduce therapeutic ions and control their release 30–32 . The use of PIGs stimulates bioactivity in vitro and in vivo 33–35 .…”

Section: Introductionmentioning

confidence: 99%

Development of orthophosphosilicate glass/poly(lactic acid) composite anisotropic scaffolds for simultaneous reconstruction of bone quality and quantity

Lee

Nagata

Kato

et al. 2020

J Biomedical Materials Res

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Reconstruction of organ‐specific architecture is necessary to recover the original organ function. The anisotropic structure of bone tissue is strongly related to the collagen fibril alignment and bone apatite crystal direction. Bone regeneration indicates following two main process; first, restoration of bone mineral density (BMD; bone quantity), and second, restoring bone apatite c‐axis orientation (bone quality). In addition to BMD, bone quality is the most important factor among bone mechanical properties. Recovery of the original bone function requires development of novel scaffolds with simultaneous reconstruction of bone quality and quantity. Herein, novel orthophosphosilicate glass (PSG)/poly(lactic acid) composite anisotropic scaffolds were developed to control cell alignment and enhance bone formation, which are important for the simultaneous reconstruction of bone quality and quantity. The strategy to control cell alignment and bone formation involved designing anisotropic scaffolds in combination with the release of therapeutic ions by PSGs. The morphology of fibrous scaffolds containing PSGs was quantitatively designed using electrospinning. This successfully modulated cell alignment and subsequent bone apatite c‐axis orientation along the fiber‐oriented direction. The released silicate and Mg2+ ions from PSGs in scaffolds improved cell adhesion, proliferation, and calcification. To best of our knowledge, this is the first report demonstrating that the anisotropic scaffolds containing bioactive glasses regenerate bone tissues with simultaneous reconstruction of bone quality and quantity via stimulating osteoblasts by inorganic ions and designing morphology of scaffolds.

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Optical and structural investigations of zinc phosphate glasses containing vanadium ions

Hammad

Abdelghany

2016

Journal of Non-Crystalline Solids

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Structure and dissolution behavior of MgO–P<sub>2</sub>O<sub>5</sub>–TiO<sub>2</sub>/Nb<sub>2</sub>O<sub>5</sub> (Mg/P ≥ 1) invert glasses

Cited by 15 publications

References 45 publications

Structural Analysis of 65ZnO–30P<sub>2</sub>O<sub>5</sub>–5Nb<sub>2</sub>O<sub>5</sub> Invert Glass Using X-ray Photoelectron Spectroscopy

Structural Analysis of 65ZnO–30P<sub>2</sub>O<sub>5</sub>–5Nb<sub>2</sub>O<sub>5</sub> Invert Glass Using X-ray Photoelectron Spectroscopy

Development of orthophosphosilicate glass/poly(lactic acid) composite anisotropic scaffolds for simultaneous reconstruction of bone quality and quantity

Optical and structural investigations of zinc phosphate glasses containing vanadium ions

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