On the deformation behavior of human dentin under compression and bending / Zaytsev Dmitry,Ivashov Alexander S.,Mandra Julia V.,Panfilov Peter // MATERIALS SCIENCE \& ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS. - 2014. - V. 41, l. . - P. 83-90.

ISSN/EISSN:

0928-4931 / 1873-0191

Type:

Article

Abstract:

The cause of difference in deformation behavior of human dentin under compression and bending is discussed. Mechanical properties of dentin under these deformation schemes are compared. Microstructural study of fracture surfaces of samples and cracks in dentin is carried out, too. Dentin behaves like a brittle solid under bending, whereas it exhibits various types of response from brittle to highly deformable under compression that depended on the geometry of sample (d/h ratio of a cubic sample). It is shown that the quantity of cracks on the compressed sample increases when its elasticity and plasticity grow up, whereas under bending the failure of sample occurs due to the advancement of dominant crack. Deformation and crack growth are the channels for the accommodation of applied stress in dentin. Crack growth is the leading one when the level of tensile stress in sample is dominant, whereas deformation becomes the leading channel when compression stress is dominant. However, in both cases contribution of the concurrent channel cannot be ignored. This feature is caused by the ductile fracture mode of dentin on the mesoscopic level. (C) 2014 Elsevier B.V. All rights reserved.

Author keywords:

Dentin; Compression; Bending; Deformation; Fracture VITRO FRACTURE-TOUGHNESS; MECHANICAL-PROPERTIES; BIOLOGICAL-MATERIALS; COLLAGEN FIBRILS; NANOSTRUCTURE

DOI:

10.1016/j.msec.2014.04.046

Web of Science ID:

ISI:000338606700012

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	AUG 1
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-0191
Keywords-Plus	VITRO FRACTURE-TOUGHNESS; MECHANICAL-PROPERTIES; BIOLOGICAL-MATERIALS; COLLAGEN FIBRILS; NANOSTRUCTURE
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Biomaterials
Author-Email	Dmitry.Zaytsev@urfu.ru
ResearcherID-Numbers	Zaytsev, Dmitry/H-1162-2014 Panfilov, Peter/B-4027-2014
ORCID-Numbers	Panfilov, Peter/0000-0001-9068-049X
Funding-Acknowledgement	RFBR {[}14-08-31691]; UrFU
Funding-Text	The authors have a pleasure to acknowledge the help of Dr. Olga Antonova in TEM study of dentin. This work was supported by RFBR, research project No. 14-08-31691 and by UrFU under the Framework Program of development of UrFU through the ``Young scientists UrFU{''} competition.
Number-of-Cited-References	28
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	10
Journal-ISO	Mater. Sci. Eng. C-Mater. Biol. Appl.
Doc-Delivery-Number	AK7KH