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Evolving application of biomimetic nanostructured hydroxyapatite

Authors Norberto Roveri, Michele Iafisco

Published Date November 2010 Volume 2010:3 Pages 107—125

DOI http://dx.doi.org/10.2147/NSA.S9038

Published 9 November 2010

Norberto Roveri, Michele Iafisco
Laboratory of Environmental and Biological Structural Chemistry (LEBSC), Dipartimento di Chimica ‘G. Ciamician’, Alma Mater Studiorum, Università di Bologna, Bologna, Italy

Abstract: By mimicking Nature, we can design and synthesize inorganic smart materials that are reactive to biological tissues. These smart materials can be utilized to design innovative third-generation biomaterials, which are able to not only optimize their interaction with biological tissues and environment, but also mimic biogenic materials in their functionalities. The biomedical applications involve increasing the biomimetic levels from chemical composition, structural organization, morphology, mechanical behavior, nanostructure, and bulk and surface chemical–physical properties until the surface becomes bioreactive and stimulates cellular materials. The chemical–physical characteristics of biogenic hydroxyapatites from bone and tooth have been described, in order to point out the elective sides, which are important to reproduce the design of a new biomimetic synthetic hydroxyapatite. This review outlines the evolving applications of biomimetic synthetic calcium phosphates, details the main characteristics of bone and tooth, where the calcium phosphates are present, and discusses the chemical–physical characteristics of biomimetic calcium phosphates, methods of synthesizing them, and some of their biomedical applications.

Keywords: hydroxyapatite, nanocrystals, biomimetism, biomaterials, drug delivery, remineralization

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