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Dual Constant Composition Kinetics Studies of the Demineralization of Ceramic Plasma Coated Apatite Surfaces

Published online by Cambridge University Press:  15 February 2011

E. P. Paschalis  and
G. H. Nancollas
E. P. Paschalis
Affiliation:
Department of Chemistry, Biophysical Sciences and BiomaterialsState University of New York at Buffalo Buffalo, New York 14214 USA
G. H. Nancollas
Affiliation:
Department of Chemistry, Biophysical Sciences and BiomaterialsState University of New York at Buffalo Buffalo, New York 14214 USA
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Abstract

Calcium phosphate phases such as hydroxyapatite (HAP) and octacalcium phosphate (OCP) have long been considered as model systems for biological minerals. Moreover such phases are involved in ceramic and plasma coated titanium (HPCTI) prosthetic devices. Most of these mineral preparations are mixtures of calcium phosphate phases, as evidenced by X-ray analysis. However, many mineralizing systems involve the formation of metastable intermediates which may subsequently undergo phase transformations. There is therefore considerable interest in investigating the simultaneous growth and dissolution of multiple mineral phases. Based on the Constant Composition (CC) method, the new Dual Constant Composition (DCC) technique has been developed for kinetics studies of the dissolution of the mixed calcium phosphate phases frequently encountered in-ceramic and plasma coated apatite surfaces.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 252: Symposium T – Tissue-Inducing Biomaterials , 1991 , 17
Copyright
Copyright © Materials Research Society 1992

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References

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