Influences of the sample shape and compression temperature on the deformation behavior and mechanical properties of human dentin / Zaytsev D., Panfilov P. // Materials Science and Engineering C. - 2014. - V. 43, l. . - P. 607-613.

ISSN:

09284931

Type:

Article

Abstract:

Deformation behavior and mechanical properties of samples of human dentin having different geometries were studied under compression in liquid nitrogen. In this case, the plastic response of the collagen fibers in dentin was excluded. The findings were compared with the mechanical properties of dentin at room temperature. Such a comparison allows the plastic contribution of collagen in human dentin to be estimated for samples of different shapes. It was shown that the deformation behavior of human dentin under compression is similar at 77 K and 300 K. The dentin samples with low aspect ratio exhibited almost brittle behavior, whereas those with high aspect ratio were prone to considerable deformation. SEM study of the fracture surfaces of samples tested at room and liquid nitrogen temperatures has shown that they are similar. Examination of cracks on the compression surface of samples agrees with this conclusion. However, the mechanical characteristics of dentin depended on the temperature of testing. The compression strength and elastic deformation of dentin at 77 K are higher than these parameters at room temperature, while the plasticity of dentin at 77 K is lower. The plastic contribution of collagen fibers at room temperature was estimated on the basis of this comparison. The total plasticity of dentin is the sum of the contributions of both collagen and the geometry of the sample. The plasticity of dentin samples having a low aspect ratio is provided by collagen fibers only, while geometric factors are dominant for samples with a high aspect ratio. The contribution of collagen fibers to the plasticity of dentin depends on the geometry of samples with an intermediate aspect ratio. © 2014 Elsevier B.V.

Author keywords:

Collagen; Compression; Dentin; Liquid nitrogen; Plasticity

Index keywords:

Aspect ratio; Collagen; Compaction; Fibers; Geometry; Liquid nitrogen; Plasticity; Compression strength; Compression temperature; Deformation behavior; Dentin; Different geometry; Fracture surfaces; L

DOI:

10.1016/j.msec.2014.07.051

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907378397&doi=10.1016%2fj.msec.2014.07.051&partnerID=40&md5=400cb4419f1632d7f36652732003d1f7

Соавторы в МНС:

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Поле	Значение
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907378397&doi=10.1016%2fj.msec.2014.07.051&partnerID=40&md5=400cb4419f1632d7f36652732003d1f7
Affiliations	Department of Physics, Institute of Natural Sciences, Ural Federal University, Lenin Avenue, 51, 620083, Ekaterinburg, Russian Federation
Author Keywords	Collagen; Compression; Dentin; Liquid nitrogen; Plasticity
Funding Details	RFBR, Russian Foundation for Basic Research
References	Zaytsev, D., Grigoriev, S., Panfilov, P., Deformation behavior of human dentin under uniaxial compression (2012) Int. J. Biomater., 2012. , 10.1155/2012/854539 (Article ID 854539); Zaytsev, D., Ivashov, A.S., Mandra, J.V., Panfilov, P., On the deformation behavior of human dentin under compression and bending (2014) Mater. Sci. Eng. C, 41, pp. 83-90; Habelitz, S., Marshall, G.W., Balooch, M., Marshall, S.J., Nanoindentation and storage of teeth (2002) J. Biomech., 35 (7), pp. 995-998; Ten Cate, A.R., (1980) Oral Histology. Development Structure and Function 4th Ed, , Mosby St. Louis; Waters, N.E., Some mechanical and physical properties of teeth (1980) Symp. Soc. Exp. Biol., 34, pp. 99-135; Kinney, J.H., Marshall, S.J., Marshall, G.W., The mechanical properties of human dentin: A critical review and re-evaluation of the dental literature (2003) Crit. Rev. Oral Biol. Med., 14 (1), pp. 13-29; Buehler, M.J., Nature designs tough collagen: Explaining the nanostructure of collagen fibrils (2006) PNAS, 103 (33), pp. 12285-12290; Nalla, R.K., Kinney, J.H., Ritchie, R.O., Effect of orientation on the in vitro fracture toughness of dentin: The role of toughening mechanisms (2003) Biomaterials, 24, pp. 3955-3968; Nalla, R.K., Kinney, J.H., Tomsia, A.P., Ritchie, R.O., Role of alcohol in the fracture resistance of teeth (2006) J. Dent. Res., 85 (11), pp. 1022-1026; Maciel, K.T., Carvalho, R.M., Ringle, R.D., Preston, C.D., Russell, C.M., Pashley, D.H., The effects of acetone, ethanol, HEMA, and air on the stiffness of human decalcified dentin matrix (1996) J. Dent. Res., 75 (11), pp. 1851-1858; Zaytsev, D., Selezneva, N.V., Grigoriev, S.S., Panfilov, P., The Influence of liquid on the deformation behavior of human dentin (2013) Prot. Met. Phys. Chem. Surf., 49 (5), pp. 517-520; Argon, A.S., (2008) Strengthening Mechanisms in Crystal Plasticity, , Oxford Materials; Honeycombe, R.W.K., (1972) The Plastic Deformation of Metals, , Edward Arnold London; Ferracane, J.L., Resin composite - State of the art (2011) Dent. Mater., 27, pp. 29-38
Correspondence Address	Zaytsev, D.; Department of Physics, Institute of Natural Sciences, Ural Federal University, Lenin Avenue, 51, 620083, Ekaterinburg, Russian Federation; email: Dmitry.Zaytsev@urfu.ru
Publisher	Elsevier Ltd
PubMed ID	25175255
Language of Original Document	English
Abbreviated Source Title	Mater. Sci. Eng. C
Source	Scopus