Anisotropy of the mechanical properties of human dental enamel / Zaytsev Dmitry,Panfilov Peter // MATERIALS LETTERS. - 2015. - V. 159, l. . - P. 428-431.

ISSN/EISSN:

0167-577X / 1873-4979

Type:

Article

Abstract:

Human dental enamel is oriented hierarchical biological structure, which covered the upper part of a tooth. Its high biomechanical properties provide protection of a tooth from influence of such external factors as imposed loads and oral environment. In this work, we examine how orientation of enamel rods rules by the mechanical properties of human enamel, using experimental mechanics. Shear testing of the enamel samples in the three planes relatively to the direction of enamel rods shed new light on the mechanism of stress accommodation in human dental enamel. It was revealed that enamel is macroscopically anisotropic hard tissue insomuch as its strength and the deformation in direction, which is normal to the enamel rods, is in 3 to 7 times higher than in directions parallel to the enamel rods. Despite it can be considered as isotropic solid up to similar to 5\% of shear deformation. Irreversible deformation of enamel occurs when loading is applied normally to the enamel rods. (C) 2015 Elsevier B.V. All rights reserved.

Author keywords:

Enamel; Enamel rod; Mechanical properties; Shear test; Anisotropy VITRO FRACTURE-TOUGHNESS; DEFORMATION-BEHAVIOR; DIAMETRAL COMPRESSION; JUNCTION; DAMAGE; SCALE

DOI:

10.1016/j.matlet.2015.07.057

Web of Science ID:

ISI:000362603000111

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	NOV 15
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-4979
Keywords-Plus	VITRO FRACTURE-TOUGHNESS; DEFORMATION-BEHAVIOR; DIAMETRAL COMPRESSION; JUNCTION; DAMAGE; SCALE
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Applied
Author-Email	Dmitry.Zaytsev@urfu.ru
ResearcherID-Numbers	Zaytsev, Dmitry/H-1162-2014
Funding-Acknowledgement	Russion Foundation of Basic Research (RFBR) {[}15-08-04073a]
Funding-Text	The reported study was supported by The Russion Foundation of Basic Research (RFBR), research Project no. 15-08-04073a.
Number-of-Cited-References	27
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	24
Journal-ISO	Mater. Lett.
Doc-Delivery-Number	CT1ZY