STEM-HAADF electron microscopy analysis of the central dark line defect of human tooth enamel crystallites.
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.
Instituto de Física, UNAM, Apartado Postal 20-364, Mexico, DF, Mexico. jreyes@fisica.unam.mx
Jose Reyes
JR
Gasga
Georgina
G
Carbajal-de-la-Torre
Etienne
E
Bres
Ivet M
IM
Gil-Chavarria
Ana G
AG
Rodríguez-Hernández
Ramiro
R
Garcia-Garcia
D003461:Crystallography; D003743:Dental Enamel / Q000033:anatomy & histology*; D006801:Humans; D008854:Microscopy, Electron / Q000379:methods*