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Theoretical detection of a dark contrast line in twinned apatite bicrystals and its possible correlation with the chemical properties of human dentin and enamel crystals

Electron microscope images of twinned apatite bicrystals oriented along the [1120] crystallographic direction have been simulated for various experimental conditions, and the validity of the calculation has been checked. These images show a dark contrast line similar to the one observed experimental...

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Bibliographic Details
Published in:Biophysical journal 1986-12, Vol.50 (6), p.1185-1193
Main Authors: Brès, E.F., Waddington, W.G., Voegel, J.C., Barry, J.C., Frank, R.M.
Format: Article
Language:English
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Summary:Electron microscope images of twinned apatite bicrystals oriented along the [1120] crystallographic direction have been simulated for various experimental conditions, and the validity of the calculation has been checked. These images show a dark contrast line similar to the one observed experimentally in enamel and dentin crystals and therefore strongly suggest the presence of a twin plane parallel to the (1100) crystallographic planes, in these crystals. The presence of a twin boundary in teeth and bone crystals is of prime importance for the adsorption and the dissolution properties of the calcified tissues as a whole.
ISSN:0006-3495
1542-0086
DOI:10.1016/S0006-3495(86)83561-5