Mechanics of longitudinal cracks in tooth enamel

被引：73

作者：

Barani, A. ^{[1
]}

Keown, A. J. ^{[1
]}

Bush, M. B. ^{[1
]}

Lee, J. J. -W. ^{[2
]}

Chai, H. ^{[3
]}

Lawn, B. R. ^{[1
,2
]}

机构：

[1] Univ Western Australia, Sch Mech & Chem Engn, Crawley, WA 6009, Australia

[2] NIST, Div Ceram, Gaithersburg, MD 20899 USA

[3] Tel Aviv Univ, Sch Mech Engn, IL-69978 Tel Aviv, Israel

来源：

ACTA BIOMATERIALIA | 2011年 / 7卷 / 05期

基金：

美国国家科学基金会; 澳大利亚研究理事会;

关键词：

Teeth; Enamel; Longitudinal channel cracks; Three-dimensional finite element modeling; Bite force; DENTAL ENAMEL; DISTRIBUTION PATTERNS; GREAT APES; FRACTURE; FAILURE; TEETH; PROPAGATION; MORPHOLOGY; EVOLUTION; MAMMALS;

D O I：

10.1016/j.actbio.2011.01.038

中图分类号：

R318 [生物医学工程];

学科分类号：

100103 [病原生物学];

摘要：

A study is made of longitudinal "channel" cracking in tooth enamel from axial compressive loading The cracks simulate those generated in the molar and premolar teeth of humans and animals by natural tooth function. Contact loading tests are made on extracted human molars with hard and soft indenting plates to determine the evolution of such cracks with increasing load. Fracture is largely stable, with initial slow growth followed by acceleration as the cracks approach completion around an enamel side wall. A simple power law relation expresses the critical load for full fracture in terms of characteristic tooth dimensions base radius and enamel thickness as well as enamel toughness Extended three-dimensional finite element modeling with provision for growth of embedded cracks is used to validate this relation The cracks leave "fingerprints" that offer valuable clues to dietary habits, and provide a basis for a priori prediction of bite forces for different animals from measured tooth dimensions (c) 2011 Acta Materialia Inc Published by Elsevier Ltd All rights reserved

引用

页码：2285 / 2292

页数：8

共 51 条

[1]

Binding affinity of hydrolyzable tannins to parotid saliva and to proline-rich proteins derived from it [J].

Bacon, JR ;

Rhodes, MJC .

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2000, 48 (03) :838-843

[2]

A comparison of fatigue crack growth in human enamel and hydroxyapatite [J].

Bajaj, Devendra ;

Nazari, Ahmad ;

Eidelman, Naomi ;

Arola, Dwayne D. .

BIOMATERIALS, 2008, 29 (36) :4847-4854

[3]

On the R-curve behavior of human tooth enamel [J].

Bajaj, Devendra ;

Arola, Dwayne D. .

BIOMATERIALS, 2009, 30 (23-24) :4037-4046

[4]

CRACKING OF THIN BONDED FILMS IN RESIDUAL TENSION [J].

BEUTH, JL .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1992, 29 (13) :1657-1675

[5]

ENAMEL LAMELLAE AND THEIR ORIGIN [J].

BODECKER, CF .

JOURNAL OF DENTAL RESEARCH, 1953, 32 (02) :239-245

[6]

ENAMEL MICROSTRUCTURE DETERMINATION IN HOMINOID AND CERCOPITHECOID PRIMATES [J].

BOYDE, A ;

MARTIN, L .

ANATOMY AND EMBRYOLOGY, 1982, 165 (02) :193-212

[7]

On the chipping and splitting of teeth [J].

Chai, Herzl ;

Lee, James J. -W. ;

Lawn, Brian R. .

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, 2011, 4 (03) :315-321

[8]

Fracture of tooth enamel from incipient microstructural defects [J].

Chai, Herzl ;

Lee, James J-W ;

Lawn, Brian R. .

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, 2010, 3 (01) :116-120

[9]

A simple model for enamel fracture from margin cracks [J].

Chai, Herzl ;

Lee, James J. -W. ;

Kwon, Jae-Young ;

Lucas, Peter W. ;

Lawn, Brian R. .

ACTA BIOMATERIALIA, 2009, 5 (05) :1663-1667

[10]

Remarkable resilience of teeth [J].

Chai, Herzl ;

Lee, James J. -W. ;

Constantino, Paul J. ;

Lucas, Peter W. ;

Lawn, Brian R. .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2009, 106 (18) :7289-7293

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