Journal of Materials Science: Materials in Medicine

, Volume 19, Issue 2, pp 877–882

STEM-HAADF electron microscopy analysis of the central dark line defect of human tooth enamel crystallites

  • Jose Reyes Gasga
  • Georgina Carbajal-de-la-Torre
  • Etienne Bres
  • Ivet M. Gil-Chavarria
  • Ana G. Rodríguez-Hernández
  • Ramiro Garcia-Garcia


When human tooth enamel is observed with the Transmission Electron Microscope (TEM), a structural defect is registered in the central region of their nanometric grains or crystallites. This defect has been named as Central Dark Line (CDL) and its structure and function in the enamel structure have been unknown yet. In this work we present the TEM analysis to these crystallites using the High Angle Annular Dark Field (HAADF) technique. Our results suggest that the CDL region is the calcium richest part of the human tooth enamel crystallites.


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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Jose Reyes Gasga
    • 1
  • Georgina Carbajal-de-la-Torre
    • 1
    • 2
  • Etienne Bres
    • 2
  • Ivet M. Gil-Chavarria
    • 1
    • 3
  • Ana G. Rodríguez-Hernández
    • 1
    • 3
  • Ramiro Garcia-Garcia
    • 1
  1. 1.Instituto de FísicaUNAMMexicoMexico
  2. 2.Laboratorie de Structure et des Proprietes del 1´Etat Solide CNRS UMR 8008Universite des Scinces et des Technologies de LilleVillenueve d’AscqFrance
  3. 3.Facultad de OdontologíaUNAM, Unidad de Posgrado, Circuito de la Investigación Científica, Cd, UniversitariaCoyoacan, MexicoMexico

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