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  • 1
    Electronic Resource
    Electronic Resource
    Planar faults in dental hydroxy-apatite (1982)
    Springer
    Calcified tissue international 34 (1982), S. 209-210 
    Details
    ISSN: 1432-0827
    Keywords: Enamel ; crystallographic fault ; caries
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary There is a range of experimental evidence consistent with the existence of planar defects in the apatite crystals which constitute dental enamel. The evidence includes the appearance of crystals in the electron microscope both before and after attack by caries or caries-simulating etchants, the cross-sectional shape of the crystals and their long lath-like morphology. It is suggested here that the defects are twin planes in the apatite structure and it is further shown that such twin faults can form with only minor disturbance to the structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02411235
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Electron-microscope study of the dentine-enamel junction of kangaroo (Macropus giganteus) teeth using selected-area argon-ion-beam thinning (1981)
    Springer
    Cell & tissue research 221 (1981), S. 405-419 
    Details
    ISSN: 1432-0878
    Keywords: Teeth (Marsupials) ; Enamel ; Dentine ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Transmission electron microscopy of selected-area argon-ion-beam thinned kangaroo (Macropus giganteus) enamel revealed a complex ultrastructure in the region of the dentine-enamel junction (DEJ). Characteristic features were multiple branching of dentinal tubules, rejoining of enamel tubules, elongated defects, extended protrusions of dentine into enamel, two types (A and B) of hypomineralized enamel and a continuity between dentinal and enamel tubules. In the intertubular regions of the DEJ a complex intermingling of finer enamel and dentine crystals, similar to that found in human enamel, was observed. The varicosities observed in the light microscope were a combined optical effect caused by the hypomineralized (type A) enamel and the branching and rejoining of the enamel tubules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00216744
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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