Effect of filler size and shape on local nanoindentation modulus of resin-composites

被引：56

作者：

Masouras, Konstantinos ^{[1
]}

Akhtar, Riaz ^{[2
]}

Watts, David C. ^{[1
,3
]}

Silikas, Nick ^{[1
]}

机构：

[1] Univ Manchester, Sch Dent, Biomat Sci Res Grp, Manchester M15 6FH, Lancs, England

[2] Univ Manchester, Sch Mat, Manchester M1 7HS, Lancs, England

[3] Univ Manchester, Photon Sci Inst, Manchester M13 9PL, Lancs, England

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE | 2008年 / 19卷 / 12期

关键词：

D O I：

10.1007/s10856-008-3520-4

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The aim of this study was to determine the Young's moduli (E) of a series of model dental resin-composites using nanoindentation, and to examine how E was influenced by differences in filler-size and shape. Materials with different filler-sizes and shapes but constant filler volume-fraction were investigated. Disc specimens, mounted in polystyrene resin were mechanically polished and tested with a nanoindenter. One-way ANOVA and Bonferroni test were used for the statistical analysis. Regression analysis was used to investigate the correlation between E and filler-size. E ranged from 9.31 to 12.54 GPa for spherical fillers and from 14.09 to 17.03 GPa for irregular fillers. Statistically significant differences were found among the groups. Strong quadratic correlations were observed between E and filler-size for unimodal materials with spherical and irregular fillers, but were not statistically significant. Filler-size and shape seemed to be fine-tuning factors for E.

引用

页码：3561 / 3566

页数：6

共 26 条

[11] Two-dimensional gradient platforms for rapid assessment of dental polymers: A chemical, mechanical and biological evaluation [J].

Lin, Nancy J. ;

Drzal, Peter L. ;

Lin-Gibson, Sheng .

DENTAL MATERIALS, 2007, 23 (10) :1211-1220

[12] Correlation of filler content and elastic properties of resin-composites [J].

Masouras, Konstantinos ;

Silikas, Nick ;

Watts, David C. .

DENTAL MATERIALS, 2008, 24 (07) :932-939

[13] ERRORS ASSOCIATED WITH DEPTH-SENSING MICROINDENTATION TESTS [J].

MENCIK, J ;

SWAIN, MV .

JOURNAL OF MATERIALS RESEARCH, 1995, 10 (06) :1491-1501

[14] ELASTIC PROPERTIES OF DENTAL RESIN RESTORATIVE MATERIALS [J].

NAKAYAMA, WT ;

HALL, DR ;

GRENOBLE, DE ;

KATZ, JL .

JOURNAL OF DENTAL RESEARCH, 1974, 53 (05) :1121-1126

[15] Measurement of hardness and elastic modulus by instrumented indentation: Advances in understanding and refinements to methodology [J].

Oliver, WC ;

Pharr, GM .

JOURNAL OF MATERIALS RESEARCH, 2004, 19 (01) :3-20

[16] Analytical techniques for indentation of viscoelastic materials [J].

Oyen, M. L. .

PHILOSOPHICAL MAGAZINE, 2006, 86 (33-35) :5625-5641

[17] Sensitivity of polymer nanoindentation creep measurements to experimental variables [J].

Oyen, Michelle L. .

ACTA MATERIALIA, 2007, 55 (11) :3633-3639

[18]

Rawls HR, 2003, PHILLIPSS SCI DENT M, V11th, P399

[19] Elastic properties of human cortical and trabecular lamellar bone measured by nanoindentation [J].

Rho, JY ;

Tsui, TY ;

Pharr, GM .

BIOMATERIALS, 1997, 18 (20) :1325-1330

[20] Nanoindentation studies of materials [J].

Schuh, Christopher A. .

MATERIALS TODAY, 2006, 9 (05) :32-40

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