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Influences of the sample shape and compression temperature on the deformation behavior and mechanical properties of human dentin

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Поле Значение
 
Заглавие Influences of the sample shape and compression temperature on the deformation behavior and mechanical properties of human dentin
 
Автор Zaytsev, D.
Panfilov, P.
 
Тематика COLLAGEN
COMPRESSION
DENTIN
LIQUID NITROGEN
PLASTICITY
ASPECT RATIO
COLLAGEN
COMPACTION
FIBERS
GEOMETRY
LIQUID NITROGEN
PLASTICITY
COMPRESSION STRENGTH
COMPRESSION TEMPERATURE
DEFORMATION BEHAVIOR
DENTIN
DIFFERENT GEOMETRY
FRACTURE SURFACES
LIQUID NITROGEN TEMPERATURE
MECHANICAL CHARACTERISTICS
BEHAVIORAL RESEARCH
BIOMECHANICS
DENTIN
HUMAN
TEMPERATURE
BIOMECHANICAL PHENOMENA
DENTIN
HUMANS
TEMPERATURE
 
Описание 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.
Russian Foundation for Basic Research, РФФИ: 14-08-31691
The authors express the gratitude to Mrs. Sara Coles for her kind help. The reported study was supported by RFBR , research project No. 14-08-31691 .
 
Дата 2024-04-22T18:30:00Z
2024-04-22T18:30:00Z
2014
 
Тип Article
Journal article (info:eu-repo/semantics/article)
Published version (info:eu-repo/semantics/publishedVersion)
 
Идентификатор Zaytsev, D. and Panfilov, P. (2014a) ‘Influences of the sample shape and compression temperature on the deformation behavior and mechanical properties of human dentin’, Materials science & engineering. C, Materials for biological applications. Elsevier BV, 43, pp. 607–613. doi: 10.1016/j.msec.2014.07.051.
Zaytsev, D., & Panfilov, P. (2014a). Influences of the sample shape and compression temperature on the deformation behavior and mechanical properties of human dentin. Materials Science & Engineering. C, Materials for Biological Applications, 43, 607–613. doi:10.1016/j.msec.2014.07.051
0928-4931
Final
All Open Access, Bronze
https://doi.org/10.1016/j.msec.2014.07.051
http://elar.urfu.ru/handle/10995/132497
10.1016/j.msec.2014.07.051
84907378397
000342529000075
 
Язык en
 
Права Open access (info:eu-repo/semantics/openAccess)
 
Формат application/pdf
 
Издатель Elsevier Ltd
 
Источник Materials Science and Engineering: C
Materials Science and Engineering C