Document Detail

Primate dental enamel: what it says about diet.
MedLine Citation:
PMID:  19828968     Owner:  NLM     Status:  MEDLINE    
What kinds of fractures do teeth sustain and how do they resist disintegration? This study involved the mechanical loading of extracted human and sea otter teeth using hard and soft indenters to simulate hard and soft diets. The tests were accompanied by real-time imaging. At least three types of fracture were seen in the enamel--median, radial and margin cracks. Each kind of fracture appears to have a different cause, although the distinction between median and radial cracks blurs as they propagate. Only margin cracks appear to form under soft indenters. Several aspects of tooth form can be described as devices to limit damage to a tooth crown against the onslaught of hard or soft foods. The damage modes of teeth are paralleled by the behavior of some bilayered hard foods.
Peter W Lucas; Paul J Constantino; James J-W Lee; Adam Hartstone-Rose; Herzl Chai; Wah-Keat Lee; Nathaniel Dominy
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Review     Date:  2009-09-21
Journal Detail:
Title:  Frontiers of oral biology     Volume:  13     ISSN:  1420-2433     ISO Abbreviation:  Front Oral Biol     Publication Date:  2009  
Date Detail:
Created Date:  2009-10-15     Completed Date:  2010-03-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9812095     Medline TA:  Front Oral Biol     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  44-8     Citation Subset:  D; IM    
Copyright Information:
Copyright (c) 2009 S. Karger AG, Basel.
Department of Anthropology, George Washington University, Washington, DC 20052, USA.
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MeSH Terms
Adaptation, Physiological
Bite Force
Dental Enamel / injuries,  pathology*
Diet / adverse effects*
Stress, Mechanical
Tooth / anatomy & histology*
Tooth Fractures / classification,  etiology*,  pathology

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