Abstract:
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.
Keywords:
X-ray microtomography, transmission electron microscopy, dentin, toughness.
T.S. Argunova is grateful to the Russian Foundation for Basic Research (RFBR) for the support of experiments involving the use of SR, grant no. 19-29-12041 mk. TEM studies were performed using the equipment of the Federal Center for Collective Use “Materials Science and Diagnostics in Advanced Technologies” with the support of the Ministry of Education and Science of the Russian Federation, project ID: RFMEFI62117X0018. M.Yu. Gutkin and D.V. Zaytsev are grateful to the RFBR for funding the development of the theoretical model of dentin degradation, grant no. 18-38-20097.
Citation:
T. S. Argunova, Zh. V. Gudkina, M. Yu. Gutkin, D. V. Zaytsev, A. E. Kalmykov, A. V. Myasoedov, E. D. Nazarova, P. E. Panfilov, L. M. Sorokin, “Study of dentin structural features by computed microtomography and transmission electron microscopy”, Zhurnal Tekhnicheskoi Fiziki, 90:9 (2020), 1449–1461; Tech. Phys., 65:9 (2020), 1391–1402
\Bibitem{ArgGudGut20}
\by T.~S.~Argunova, Zh.~V.~Gudkina, M.~Yu.~Gutkin, D.~V.~Zaytsev, A.~E.~Kalmykov, A.~V.~Myasoedov, E.~D.~Nazarova, P.~E.~Panfilov, L.~M.~Sorokin
\paper Study of dentin structural features by computed microtomography and transmission electron microscopy
\jour Zhurnal Tekhnicheskoi Fiziki
\yr 2020
\vol 90
\issue 9
\pages 1449--1461
\mathnet{http://mi.mathnet.ru/jtf5199}
\crossref{https://doi.org/10.21883/JTF.2020.09.49675.442-19}
\elib{https://elibrary.ru/item.asp?id=44154262}
\transl
\jour Tech. Phys.
\yr 2020
\vol 65
\issue 9
\pages 1391--1402
\crossref{https://doi.org/10.1134/S1063784220090054}
Linking options:
https://www.mathnet.ru/eng/jtf5199
https://www.mathnet.ru/eng/jtf/v90/i9/p1449
This publication is cited in the following 2 articles:
Senyao Chen, Jianwei Sun, Wenzhi Wu, Zhuo Chen, “Advances in 3D Bioprinting of Scaffolds for Dental Tissue Engineering and Regeneration”, Adv Funct Materials, 2025
Cyril Besnard, Ali Marie, Sisini Sasidharan, Robert A. Harper, Richard M. Shelton, Gabriel Landini, Alexander M. Korsunsky, “Synchrotron X-ray Studies of the Structural and Functional Hierarchies in Mineralised Human Dental Enamel: A State-of-the-Art Review”, Dentistry Journal, 11:4 (2023), 98