Self-Assembly and Nano-layering of Apatitic Calcium Phosphates in Biomaterials

Chapter
Part of the Springer Series in Biomaterials Science and Engineering book series (SSBSE, volume 2)

Abstract

Among many calcium phosphates, apatitic ones are by far familiar because of their lattice structure similar to bone apatites. Yet, if one wants an apatite layer as a tool for improving tissue compatibility, regardless of hard or soft tissues, stoichiometric apatite is not necessary but nonstoichiometric apatite, e.g., with calcium ion deficiency or partial carbonate ion substitution, is preferable. Such apatite is easily provided on the surface of several materials when they are in contact with plasma; the materials include silicate glass and glass-ceramics and organic–inorganic hybrids with Si–O or Ti–O bonds as their skeleton, as well as some oxide gels derived via the sol-gel procedure. Moreover, proper water-soluble glass with specific compositions will be converted to apatite agglomerates or to rod- or needlelike apatite crystallites in array on their surface. The present chapter reviews deposition of apatitic calcium phosphates on such materials under body environment and their deposition mechanism in relation to constructing bone tissue as a hybrid between collagen fibrils and apatite crystallites.

Keywords

Apatite Nonstoichiometric Apatite deposition Tissue compatibility Glass-ceramics Titanium alloys Oxide gels Organic–inorganic hybrids 

Notes

Acknowledgment

The author is very grateful of all the works introduced here and should apologize for not all work pertinent to this topic are described, as it is impossible.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Faculty of EngineeringOkayama UniversityTsushimaJapan

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