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Electron Microscopy Analysis of the Central Dark Line Defect of the Human Tooth Enamel

Published online by Cambridge University Press:  01 February 2011

A. G. Rodríguez-Hernández ,
M.E. Fernández ,
G. Carbajal-De-La-Torre ,
R. García-García  and
J. Reyes-Gasga
A. G. Rodríguez-Hernández
Affiliation:
Facultad de Odontología, UNAM. Circuito de la Investigación s/n, Ciudad Universitaria, Coyoacán 04510, México D.F., MEXICO.
M.E. Fernández
Affiliation:
Instituto Nacional de Investigaciones Nucleares, ININ. Km. 36.5 Carretera México-Toluca Ocoyoacac Edo. de México 52045., MÉXICO.
G. Carbajal-De-La-Torre
Affiliation:
Instituto de Física, UNAM. Apartado Postal 20–364, 01000 México, D.F., MÉXICO. E-mail: jreyes@fisica.unam.mx
R. García-García
Affiliation:
Instituto de Física, UNAM. Apartado Postal 20–364, 01000 México, D.F., MÉXICO. E-mail: jreyes@fisica.unam.mx
J. Reyes-Gasga
Affiliation:
Instituto de Física, UNAM. Apartado Postal 20–364, 01000 México, D.F., MÉXICO. E-mail: jreyes@fisica.unam.mx
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Abstract

After some experimental results that indicated that HA is able to growth in an epitaxial way on the surface of OCP, it has been suggested that the central dark line (CDL) observed in the nanometric-sized grains of human tooth enamel corresponds to a one-unit-cell-thick layer of octacalcium phosphate (OCP). Based on this consideration, in this work we propose a model for CDL and we carried out the chemistry and structural analysis of the CDL with high resolution microscopy techniques such as Electron Energy Loss Spectroscopy (EELS) and Z-contrast (HAADF) with the aim of find the agreements and/or differences between the human tooth enamel HA and its CDL.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 839: Symposium P – Electron Microscopy of Molecular and Atom-Scale Mechanical Behavior, Chemistry, and Structure , 2004 , P6.10
Copyright
Copyright © Materials Research Society 2004

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References

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