Deformation behavior of human dentin in liquid nitrogen: A diametral compression test / Zaytsev Dmitry,Panfilov Peter // MATERIALS SCIENCE \& ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS. - 2014. - V. 42, l. . - P. 48-51.

ISSN/EISSN:

0928-4931 / 1873-0191

Type:

Article

Abstract:

Contribution of the collagen fibers into the plasticity of human dentin is considered. Mechanical testing of dentin at low temperature allows excluding the plastic response of its organic matrix. Therefore, deformation and fracture behavior of the dentin samples under diametral compression at room temperature and liquid nitrogen temperature are compared. At 77 K dentin behaves like almost brittle material: it is deformed exclusively in the elastic regime and it fails due to growth of the sole crack. On the contrary, dentin demonstrates the ductile response at 300 K. There are both elastic and plastic contributions in the deformation of dentin samples. Multiple cracking and crack tip blunting precede the failure of samples. Organic phase plays an important role in fracture of dentin: plasticity of the collagen fibers could inhibit the crack growth. (C) 2014 Elsevier B.V. All rights reserved.

Author keywords:

Tooth; Dentin; Tensile strength TENSILE-STRENGTH; FRACTURE-TOUGHNESS; BRITTLE MATERIALS; ROOT DENTIN

DOI:

10.1016/j.msec.2014.05.011

Web of Science ID:

ISI:000340687400008

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	SEP 1
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-0191
Keywords-Plus	TENSILE-STRENGTH; FRACTURE-TOUGHNESS; BRITTLE MATERIALS; ROOT DENTIN
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Biomaterials
Author-Email	Dmitry.Zaytsev@urfu.ru peter.panfilov@urfu.ru
ResearcherID-Numbers	Panfilov, Peter/B-4027-2014
ORCID-Numbers	Panfilov, Peter/0000-0001-9068-049X
Funding-Acknowledgement	RFBR {[}14-08-31691]; UrFU
Funding-Text	The reported study 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	19
Usage-Count-Since-2013	3
Journal-ISO	Mater. Sci. Eng. C-Mater. Biol. Appl.
Doc-Delivery-Number	AN6EJ