Electron Microscopy of Carious Dentin
- 1 February 1954
- journal article
- research article
- Published by SAGE Publications in Journal of Dental Research
- Vol. 33 (1) , 20-26
- https://doi.org/10.1177/00220345540330010801
Abstract
Detailed histologic studies of carious dentin with the electron microscope were undertaken by the use of ultrathin sections. Electron micrographs are presented which demonstrate the different zones of degeneration based on degree of bacterial invasion. The most superficial zone is characterized by complete decalcification and decomposition of the dentin. An area of incipient decalcification in which the bacteria have invaded the tubules is the 2d zone. In this region, sclerosed tubules are found with their lumina obliterated by either a homogeneous or a calcified material. Collagen fibrils of 640 A striations are also evident in this region. In the deepest layer from the area of decalcification, a few tubules contain microorganisms.Keywords
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