Adsorption of Salivary Proteins by Hydroxyapatite: Relations Between the Effects of Calcium Ions,Hydrogen Ions,Temperature,and Exposure Time

Abstract

Calcium ions enhanced the adsorption of salivary proteins by hydroxyapatite. Calcium probably acted in the protein-bound form by promoting the aggregation of proteins. Concentrations of calcium far below physiologic levels exerted maximal efJects. Lowering the pH to 5 increased protein adsorption but abolished the effect of calcium. Relevance to the in vivo situation was examined.

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