ИССЛЕДОВАНИЕ СТРУКТУРНЫХ ОСОБЕННОСТЕЙ ДЕНТИНА МЕТОДАМИ МИКРОТОМОГРАФИИ И ПРОСВЕЧИВАЮЩЕЙ ЭЛЕКТРОННОЙ МИКРОСКОПИИ

Татьяна С. Аргунова, Ж. В. Гудкина, Михаил Юрьевич Гуткин, Дмитрий Викторович Зайцев, А. Е. Калмыков, А. В. Мясоедов, Е. Д. Назарова, Петр Евгеньевич Панфилов, Л. М. Сорокин

Resultado de pesquisa: Article

Resumo

Dentin of human teeth is a natural composite material with a layered hierarchical structure; it is formed by micro- and nanostructures whose complex relations obey the laws not yet fully understood. In order to understand the effect of the dentin structure on its mechanical properties, a study of dentin samples prepared from human molars and subjected to a uniaxial compression was made. Synchrotron X-ray microtomography and transmission electron microscopy were employed to investigate the elements of dentin matrix and the tubules which cross the matrix. Single structural features based on the interaction of the elements, as well as the properties of the dentinal tubules, which can stop crack propagation have been investigated. A model is proposed for calculating the conditions of stopping of a mode II crack by generation of secondary cracks caused by the stresses over the surfaces of the tubules.
Título traduzido da contribuiçãoTHE DENTIN STRUCTURAL FEATURES STUDIED WITH A MICROTOMOGRAPHY AND TRANSMISSION ELECTRON MICROSCOPY
Idioma originalRussian
Páginas (de-até)1449-1461
Número de páginas13
RevistaЖурнал технической физики
Volume90
Número de emissão9
DOIs
Estado da publicaçãoPublished - 2020

GRNTI

  • 29.00.00 PHYSICS

Level of Research Output

  • VAK List

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