The issue of the contribution of the addition of F to glass bioactivity is not well resolved. This work reports on the surface reactivity in different solutions (DMEM and Tris) for some potentially bioactive glasses based on the composition of 45S5 glass, in which CaF2 is substituted alternately for (part of) CaO and Na2O. The reactivity of F-containing glasses has been compared with that of the reference 45S5 system. The aim of this study is to explain in detail the mechanism of formation of an apatitic crystalline phase at the interface between the inorganic material and simulated biological media. A multi-technique investigation approach proposes a set of reactions involving Ca-carbonate formation, which are somewhat different from that formerly proposed by Hench for 45S5 bioactive glass, and which occur when a F-containing glass surface is in contact with a SBF. The usefulness of IR spectroscopy in recognizing the starting step of apatite (and/or FA) formation with respect to XRD technique is well established here.

Fluoride-containing bioactive glasses: surface reactivity in simulated body fluids / Aina, V.; Lusvardi, Gigliola; Malavasi, Gianluca; Menabue, Ledi; C., Morterra. - In: ACTA BIOMATERIALIA. - ISSN 1742-7061. - STAMPA. - 5:(2009), pp. 3548-3562. [10.1016/j.actbio.2009.06.009]

Fluoride-containing bioactive glasses: surface reactivity in simulated body fluids

V. Aina;LUSVARDI, Gigliola;MALAVASI, Gianluca;MENABUE, Ledi;
2009

Abstract

The issue of the contribution of the addition of F to glass bioactivity is not well resolved. This work reports on the surface reactivity in different solutions (DMEM and Tris) for some potentially bioactive glasses based on the composition of 45S5 glass, in which CaF2 is substituted alternately for (part of) CaO and Na2O. The reactivity of F-containing glasses has been compared with that of the reference 45S5 system. The aim of this study is to explain in detail the mechanism of formation of an apatitic crystalline phase at the interface between the inorganic material and simulated biological media. A multi-technique investigation approach proposes a set of reactions involving Ca-carbonate formation, which are somewhat different from that formerly proposed by Hench for 45S5 bioactive glass, and which occur when a F-containing glass surface is in contact with a SBF. The usefulness of IR spectroscopy in recognizing the starting step of apatite (and/or FA) formation with respect to XRD technique is well established here.
2009
5
3548
3562
Fluoride-containing bioactive glasses: surface reactivity in simulated body fluids / Aina, V.; Lusvardi, Gigliola; Malavasi, Gianluca; Menabue, Ledi; C., Morterra. - In: ACTA BIOMATERIALIA. - ISSN 1742-7061. - STAMPA. - 5:(2009), pp. 3548-3562. [10.1016/j.actbio.2009.06.009]
Aina, V.; Lusvardi, Gigliola; Malavasi, Gianluca; Menabue, Ledi; C., Morterra
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/614435
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