Solubility behaviour of synthetic hydroxyapatites in aqueous solution: influence of amorphous constituents on pH value.
Some hydroxyapatites show a considerable increase of pH in aqueous solution. Rinsing experiments were performed on two commercial samples, and the pH value was plotted as a function of time. The plots lead to the conclusion that a soluble amorphous phase is responsible for the increase in pH. This investigation was supported by X-ray diffraction, microscopy and chemical analyses.
Saalfeld
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U
Department of Trauma and Reconstructive Surgery, University Hospital Hamburg-Eppendorf, Germany.
Meenen
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NM
Jüres
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TT
Saalfeld
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H
D001672:Biocompatible Materials / Q000737:chemistry*; D018786:Bone Substitutes / Q000737:chemistry; D002516:Ceramics / Q000737:chemistry; D006801:Humans; D006863:Hydrogen-Ion Concentration; D006882:Hydroxyapatites / Q000737:chemistry*; D066298:In Vitro Techniques; D008422:Materials Testing; D012995:Solubility; D012996:Solutions; D014867:Water; D014961:X-Ray Diffraction
D001672:Biocompatible Materials; D018786:Bone Substitutes; D006882:Hydroxyapatites; D012996:Solutions; D014867:Water