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Mechanics of longitudinal cracks in tooth enamel

Paper ID Volume ID Publish Year Pages File Format Full-Text
1632 87 2011 8 PDF Available
Title
Mechanics of longitudinal cracks in tooth enamel
Abstract

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.

Keywords
Teeth; Enamel; Longitudinal channel cracks; Three-dimensional finite element modeling; Bite force
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Mechanics of longitudinal cracks in tooth enamel
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 7, Issue 5, May 2011, Pages 2285–2292
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us