The mechanical properties of the dentine and cement of the tusk of the narwhal Monodon monoceros compared with those of other mineralized tissues
Identifieur interne : 003A30 ( Istex/Corpus ); précédent : 003A29; suivant : 003A31The mechanical properties of the dentine and cement of the tusk of the narwhal Monodon monoceros compared with those of other mineralized tissues
Auteurs : K. Break ; J. D. Currey ; C. M. Pond ; M. A. RamsaySource :
- Archives of Oral Biology [ 0003-9969 ] ; 1990.
English descriptors
- KwdEn :
- Biological materials, Bowen, Calcium content, Cattle bone, Cattle cementum, Cattle dentine, Cattle femur, Cattle molar, Cattle teeth, Cementum, Cementurn, Compact bone, Currey, Dental tissues, Dentine, Fracture, Hardness, Human dentin, Human dentine, Long axis, Mechanical properties, Mineral content, Mineralization, Mineralized, Mineralized tissues, Modulus, Monodon monoceros, Narwhal, Narwhal cement, Narwhal cementum, Narwhal dentine, Narwhal tusk, Narwhal tusk tissues, Physical properties, Reindeer, Reindeer antler, Rodriguez, Strain rate, Strain rates, Tensile strength, Tusk, Ultimate strain, cementum, dentine, mechanical properties, narwhal tusk.
- Teeft :
- Biological materials, Bowen, Calcium content, Cattle bone, Cattle cementum, Cattle dentine, Cattle femur, Cattle molar, Cattle teeth, Cementum, Cementurn, Compact bone, Currey, Dental tissues, Dentine, Fracture, Hardness, Human dentin, Human dentine, Long axis, Mechanical properties, Mineral content, Mineralization, Mineralized, Mineralized tissues, Modulus, Monodon monoceros, Narwhal, Narwhal cement, Narwhal cementum, Narwhal dentine, Narwhal tusk, Narwhal tusk tissues, Physical properties, Reindeer, Reindeer antler, Rodriguez, Strain rate, Strain rates, Tensile strength, Tusk, Ultimate strain.
Abstract
Abstract: Values for Young's modulus of elasticity, ultimate and yield stresses, ultimate and yield strains, work under the stress-strain curve and work of fracture were obtained from tensile and bending tests on specimens of narwhal tusk dentine and cement, femoral bone from young and mature cattle, and reindeer antler. Compared with the cattle bone the narwhal tissues had low Young's moduli, low yield stresses, rather low ultimate stresses and high ultimate strains. In all these properties they were similar to reindeer antler. The calcium content and hardness of the narwhal tissues were compared with those of human and cattle dental tissues. The narwhal dentine was considerably softer and less mineralized than human and cattle dentine. Human cementum was softer and less mineralized than cattle cementum, and was like narwhal cementum. In general, the mechanical properties of the narwhal tusk tissues were as would be expected from their mineral content, except that the stiffness of the cementum was low. It is likely that narwhal dentine is not very similar to human and cattle dentine in its mechanical properties.
Url:
DOI: 10.1016/0003-9969(90)90027-8
Links to Exploration step
ISTEX:75F49448D3EE267462C0A6602D83203BFA87E071Le document en format XML
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Break</name><affiliation><mods:affiliation>Department of Biology, University of York, York YO1 5DD, England</mods:affiliation></affiliation></author><author><name sortKey="Currey, J D" sort="Currey, J D" uniqKey="Currey J" first="J. D." last="Currey">J. D. Currey</name><affiliation><mods:affiliation>Address correspondence to: Professor J. D. Currey, Department of Biology, University of York, York YO1 5DD, England.</mods:affiliation></affiliation><affiliation><mods:affiliation>Department of Biology, University of York, York YO1 5DD, England</mods:affiliation></affiliation></author><author><name sortKey="Pond, C M" sort="Pond, C M" uniqKey="Pond C" first="C. M." last="Pond">C. M. Pond</name><affiliation><mods:affiliation>Department of Biology, The Open University, Milton Keynes MK7 6AA, England</mods:affiliation></affiliation></author><author><name sortKey="Ramsay, M A" sort="Ramsay, M A" uniqKey="Ramsay M" first="M. A." last="Ramsay">M. A. Ramsay</name><affiliation><mods:affiliation>Department of Biology, University of Saskatchewan, Saskatoon, Canada S7N 0W0</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Archives of Oral Biology</title><title level="j" type="abbrev">AOB</title><idno type="ISSN">0003-9969</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1990">1990</date><biblScope unit="volume">35</biblScope><biblScope unit="issue">8</biblScope><biblScope unit="page" from="615">615</biblScope><biblScope unit="page" to="621">621</biblScope></imprint><idno type="ISSN">0003-9969</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0003-9969</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biological materials</term><term>Bowen</term><term>Calcium content</term><term>Cattle bone</term><term>Cattle cementum</term><term>Cattle dentine</term><term>Cattle femur</term><term>Cattle molar</term><term>Cattle teeth</term><term>Cementum</term><term>Cementurn</term><term>Compact bone</term><term>Currey</term><term>Dental tissues</term><term>Dentine</term><term>Fracture</term><term>Hardness</term><term>Human dentin</term><term>Human dentine</term><term>Long axis</term><term>Mechanical properties</term><term>Mineral content</term><term>Mineralization</term><term>Mineralized</term><term>Mineralized tissues</term><term>Modulus</term><term>Monodon monoceros</term><term>Narwhal</term><term>Narwhal cement</term><term>Narwhal cementum</term><term>Narwhal dentine</term><term>Narwhal tusk</term><term>Narwhal tusk tissues</term><term>Physical properties</term><term>Reindeer</term><term>Reindeer antler</term><term>Rodriguez</term><term>Strain rate</term><term>Strain rates</term><term>Tensile strength</term><term>Tusk</term><term>Ultimate strain</term><term>cementum</term><term>dentine</term><term>mechanical properties</term><term>narwhal tusk</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Biological materials</term><term>Bowen</term><term>Calcium content</term><term>Cattle bone</term><term>Cattle cementum</term><term>Cattle dentine</term><term>Cattle femur</term><term>Cattle molar</term><term>Cattle teeth</term><term>Cementum</term><term>Cementurn</term><term>Compact bone</term><term>Currey</term><term>Dental tissues</term><term>Dentine</term><term>Fracture</term><term>Hardness</term><term>Human dentin</term><term>Human dentine</term><term>Long axis</term><term>Mechanical properties</term><term>Mineral content</term><term>Mineralization</term><term>Mineralized</term><term>Mineralized tissues</term><term>Modulus</term><term>Monodon monoceros</term><term>Narwhal</term><term>Narwhal cement</term><term>Narwhal cementum</term><term>Narwhal dentine</term><term>Narwhal tusk</term><term>Narwhal tusk tissues</term><term>Physical properties</term><term>Reindeer</term><term>Reindeer antler</term><term>Rodriguez</term><term>Strain rate</term><term>Strain rates</term><term>Tensile strength</term><term>Tusk</term><term>Ultimate strain</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: Values for Young's modulus of elasticity, ultimate and yield stresses, ultimate and yield strains, work under the stress-strain curve and work of fracture were obtained from tensile and bending tests on specimens of narwhal tusk dentine and cement, femoral bone from young and mature cattle, and reindeer antler. Compared with the cattle bone the narwhal tissues had low Young's moduli, low yield stresses, rather low ultimate stresses and high ultimate strains. In all these properties they were similar to reindeer antler. The calcium content and hardness of the narwhal tissues were compared with those of human and cattle dental tissues. The narwhal dentine was considerably softer and less mineralized than human and cattle dentine. Human cementum was softer and less mineralized than cattle cementum, and was like narwhal cementum. In general, the mechanical properties of the narwhal tusk tissues were as would be expected from their mineral content, except that the stiffness of the cementum was low. It is likely that narwhal dentine is not very similar to human and cattle dentine in its mechanical properties.</div></front></TEI><istex><corpusName>elsevier</corpusName><keywords><teeft><json:string>dentine</json:string><json:string>narwhal</json:string><json:string>cementum</json:string><json:string>tusk</json:string><json:string>modulus</json:string><json:string>mechanical properties</json:string><json:string>currey</json:string><json:string>narwhal dentine</json:string><json:string>mineralization</json:string><json:string>calcium content</json:string><json:string>cementurn</json:string><json:string>ultimate strain</json:string><json:string>bowen</json:string><json:string>rodriguez</json:string><json:string>reindeer</json:string><json:string>cattle dentine</json:string><json:string>narwhal tusk</json:string><json:string>fracture</json:string><json:string>tensile strength</json:string><json:string>narwhal cementum</json:string><json:string>mineral content</json:string><json:string>reindeer antler</json:string><json:string>mineralized</json:string><json:string>strain rate</json:string><json:string>dental tissues</json:string><json:string>cattle molar</json:string><json:string>human dentine</json:string><json:string>hardness</json:string><json:string>narwhal cement</json:string><json:string>cattle cementum</json:string><json:string>biological materials</json:string><json:string>cattle femur</json:string><json:string>long axis</json:string><json:string>cattle teeth</json:string><json:string>narwhal tusk tissues</json:string><json:string>compact bone</json:string><json:string>mineralized tissues</json:string><json:string>cattle bone</json:string><json:string>strain rates</json:string><json:string>physical properties</json:string><json:string>monodon monoceros</json:string><json:string>human dentin</json:string></teeft></keywords><subject><json:item><lang><json:string>eng</json:string></lang><value>narwhal tusk</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>mechanical properties</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>dentine</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>cementum</value></json:item></subject><language><json:string>eng</json:string></language><originalGenre><json:string>Full-length article</json:string></originalGenre><qualityIndicators><score>8.936</score><pdfWordCount>4812</pdfWordCount><pdfCharCount>28609</pdfCharCount><pdfVersion>1.2</pdfVersion><pdfPageCount>7</pdfPageCount><pdfPageSize>504 x 792 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractWordCount>177</abstractWordCount><abstractCharCount>1130</abstractCharCount><keywordCount>4</keywordCount></qualityIndicators><title>The mechanical properties of the dentine and cement of the tusk of the narwhal Monodon monoceros compared with those of other mineralized tissues</title><pii><json:string>0003-9969(90)90027-8</json:string></pii><genre><json:string>research-article</json:string></genre><host><title>Archives of Oral Biology</title><language><json:string>unknown</json:string></language><publicationDate>1990</publicationDate><issn><json:string>0003-9969</json:string></issn><pii><json:string>S0003-9969(00)X0164-1</json:string></pii><volume>35</volume><issue>8</issue><pages><first>615</first><last>621</last></pages><genre><json:string>journal</json:string></genre></host><namedEntities><unitex><date><json:string>1990</json:string></date><geogName></geogName><orgName></orgName><orgName_funder></orgName_funder><orgName_provider></orgName_provider><persName><json:string>Renson</json:string><json:string>C. E. Renson</json:string><json:string>Michael Kingsley</json:string><json:string>M. Braden</json:string><json:string>Property</json:string></persName><placeName><json:string>Wetzlar</json:string></placeName><ref_url></ref_url><ref_bibl><json:string>Carter and Caler (1985)</json:string><json:string>Stanford et al. (1960)</json:string><json:string>Bowen and Rodriguez (1962)</json:string><json:string>reviewed by Best, 1981</json:string><json:string>Currey and Evans (1989)</json:string><json:string>El Mowafy and Grant (1987)</json:string><json:string>Boyde, 1980</json:string><json:string>Currey, 1990</json:string><json:string>Silverman and Dunbar, 1980</json:string><json:string>Craig and Peyton (1958)</json:string><json:string>Renson and Braden (1975)</json:string><json:string>Mahler and Hershanov (1952)</json:string><json:string>Pollack and Katz (1969)</json:string><json:string>Dow and Hollenberg (1977)</json:string><json:string>Currey and Brear (1990)</json:string><json:string>Tattersall and Tappin (1966)</json:string><json:string>Gilmore et al. (1969)</json:string><json:string>Rasmussen and Patchin (1984)</json:string><json:string>Nowak and Paradiso, 1983</json:string><json:string>1987,1988a, 1990</json:string><json:string>Currey, 1988a,b</json:string><json:string>Currey, 1984, p. 40</json:string><json:string>Hodgskinson et al. (1989)</json:string><json:string>quoted in Renson and Braden, 1975</json:string><json:string>Currey (1988a)</json:string><json:string>Best, 1981</json:string><json:string>Gilmore et al.</json:string><json:string>Kingsley and Ramsay, 1988</json:string><json:string>Hay and Mansfield, 1989</json:string><json:string>Sarkhar and Chauhan (1967)</json:string></ref_bibl><bibl></bibl></unitex></namedEntities><ark><json:string>ark:/67375/6H6-XJZG99GP-9</json:string></ark><categories><wos><json:string>1 - science</json:string><json:string>2 - dentistry, oral surgery & medicine</json:string></wos><scienceMetrix><json:string>1 - health sciences</json:string><json:string>2 - clinical medicine</json:string><json:string>3 - dentistry</json:string></scienceMetrix><scopus><json:string>1 - Life Sciences</json:string><json:string>2 - Biochemistry, Genetics and Molecular Biology</json:string><json:string>3 - Cell Biology</json:string><json:string>1 - Health Sciences</json:string><json:string>2 - Dentistry</json:string><json:string>3 - General Dentistry</json:string><json:string>1 - Health Sciences</json:string><json:string>2 - Medicine</json:string><json:string>3 - General Medicine</json:string><json:string>1 - Health Sciences</json:string><json:string>2 - Medicine</json:string><json:string>3 - Otorhinolaryngology</json:string></scopus><inist><json:string>1 - sciences appliquees, technologies et medecines</json:string><json:string>2 - sciences biologiques et medicales</json:string><json:string>3 - sciences biologiques fondamentales et appliquees. psychologie</json:string></inist></categories><publicationDate>1990</publicationDate><author><json:item><name>K. Break</name><affiliations><json:string>Department of Biology, University of York, York YO1 5DD, England</json:string></affiliations></json:item><json:item><name>J.D. Currey</name><affiliations><json:string>Address correspondence to: Professor J. D. Currey, Department of Biology, University of York, York YO1 5DD, England.</json:string><json:string>Department of Biology, University of York, York YO1 5DD, England</json:string></affiliations></json:item><json:item><name>C.M. Pond</name><affiliations><json:string>Department of Biology, The Open University, Milton Keynes MK7 6AA, England</json:string></affiliations></json:item><json:item><name>M.A. Ramsay</name><affiliations><json:string>Department of Biology, University of Saskatchewan, Saskatoon, Canada S7N 0W0</json:string></affiliations></json:item></author><articleId><json:string>90900278</json:string></articleId><arkIstex>ark:/67375/6H6-XJZG99GP-9</arkIstex><abstract>Abstract: Values for Young's modulus of elasticity, ultimate and yield stresses, ultimate and yield strains, work under the stress-strain curve and work of fracture were obtained from tensile and bending tests on specimens of narwhal tusk dentine and cement, femoral bone from young and mature cattle, and reindeer antler. Compared with the cattle bone the narwhal tissues had low Young's moduli, low yield stresses, rather low ultimate stresses and high ultimate strains. In all these properties they were similar to reindeer antler. The calcium content and hardness of the narwhal tissues were compared with those of human and cattle dental tissues. The narwhal dentine was considerably softer and less mineralized than human and cattle dentine. Human cementum was softer and less mineralized than cattle cementum, and was like narwhal cementum. In general, the mechanical properties of the narwhal tusk tissues were as would be expected from their mineral content, except that the stiffness of the cementum was low. It is likely that narwhal dentine is not very similar to human and cattle dentine in its mechanical properties.</abstract><pmid><json:string>2256815</json:string></pmid><serie><title>Handbook of Marine Mammals</title><language><json:string>unknown</json:string></language><volume>Vol. 4</volume><pages><first>145</first><last>176</last></pages></serie><copyrightDate>1990</copyrightDate><doi><json:string>10.1016/0003-9969(90)90027-8</json:string></doi><id>75F49448D3EE267462C0A6602D83203BFA87E071</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/75F49448D3EE267462C0A6602D83203BFA87E071/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/75F49448D3EE267462C0A6602D83203BFA87E071/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/75F49448D3EE267462C0A6602D83203BFA87E071/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">The mechanical properties of the dentine and cement of the tusk of the narwhal Monodon monoceros compared with those of other mineralized tissues</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>ELSEVIER</publisher><availability><p>ELSEVIER</p></availability><date>1990</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">The mechanical properties of the dentine and cement of the tusk of the narwhal Monodon monoceros compared with those of other mineralized tissues</title><author xml:id="author-0000"><persName><forename type="first">K.</forename><surname>Break</surname></persName><affiliation>Department of Biology, University of York, York YO1 5DD, England</affiliation></author><author xml:id="author-0001"><persName><forename type="first">J.D.</forename><surname>Currey</surname></persName><affiliation>Address correspondence to: Professor J. D. Currey, Department of Biology, University of York, York YO1 5DD, England.</affiliation><affiliation>Department of Biology, University of York, York YO1 5DD, England</affiliation></author><author xml:id="author-0002"><persName><forename type="first">C.M.</forename><surname>Pond</surname></persName><affiliation>Department of Biology, The Open University, Milton Keynes MK7 6AA, England</affiliation></author><author xml:id="author-0003"><persName><forename type="first">M.A.</forename><surname>Ramsay</surname></persName><affiliation>Department of Biology, University of Saskatchewan, Saskatoon, Canada S7N 0W0</affiliation></author><idno type="istex">75F49448D3EE267462C0A6602D83203BFA87E071</idno><idno type="DOI">10.1016/0003-9969(90)90027-8</idno><idno type="PII">0003-9969(90)90027-8</idno><idno type="ArticleID">90900278</idno></analytic><monogr><title level="j">Archives of Oral Biology</title><title level="j" type="abbrev">AOB</title><idno type="pISSN">0003-9969</idno><idno type="PII">S0003-9969(00)X0164-1</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1990"></date><biblScope unit="volume">35</biblScope><biblScope unit="issue">8</biblScope><biblScope unit="page" from="615">615</biblScope><biblScope unit="page" to="621">621</biblScope></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1990</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Values for Young's modulus of elasticity, ultimate and yield stresses, ultimate and yield strains, work under the stress-strain curve and work of fracture were obtained from tensile and bending tests on specimens of narwhal tusk dentine and cement, femoral bone from young and mature cattle, and reindeer antler. Compared with the cattle bone the narwhal tissues had low Young's moduli, low yield stresses, rather low ultimate stresses and high ultimate strains. In all these properties they were similar to reindeer antler. The calcium content and hardness of the narwhal tissues were compared with those of human and cattle dental tissues. The narwhal dentine was considerably softer and less mineralized than human and cattle dentine. Human cementum was softer and less mineralized than cattle cementum, and was like narwhal cementum. In general, the mechanical properties of the narwhal tusk tissues were as would be expected from their mineral content, except that the stiffness of the cementum was low. It is likely that narwhal dentine is not very similar to human and cattle dentine in its mechanical properties.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>Keywords</head><item><term>narwhal tusk</term></item><item><term>mechanical properties</term></item><item><term>dentine</term></item><item><term>cementum</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1990">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/75F49448D3EE267462C0A6602D83203BFA87E071/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="UTF-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla" xml:lang="en"><item-info><jid>AOB</jid><aid>90900278</aid><ce:pii>0003-9969(90)90027-8</ce:pii><ce:doi>10.1016/0003-9969(90)90027-8</ce:doi><ce:copyright type="unknown" year="1990"></ce:copyright></item-info><head><ce:title>The mechanical properties of the dentine and cement of the tusk of the narwhal <ce:italic>Monodon monoceros</ce:italic> compared with those of other mineralized tissues</ce:title><ce:author-group><ce:author><ce:given-name>K.</ce:given-name><ce:surname>Break</ce:surname><ce:cross-ref refid="AFF1"><ce:sup loc="post">1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.D.</ce:given-name><ce:surname>Currey</ce:surname><ce:cross-ref refid="COR1"><ce:sup loc="post">∗</ce:sup></ce:cross-ref><ce:cross-ref refid="AFF1"><ce:sup loc="post">1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>C.M.</ce:given-name><ce:surname>Pond</ce:surname><ce:cross-ref refid="AFF2"><ce:sup loc="post">2</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>M.A.</ce:given-name><ce:surname>Ramsay</ce:surname><ce:cross-ref refid="AFF3"><ce:sup loc="post">3</ce:sup></ce:cross-ref></ce:author><ce:affiliation id="AFF1"><ce:label>a</ce:label><ce:textfn>Department of Biology, University of York, York YO1 5DD, England</ce:textfn></ce:affiliation><ce:affiliation id="AFF2"><ce:label>b</ce:label><ce:textfn>Department of Biology, The Open University, Milton Keynes MK7 6AA, England</ce:textfn></ce:affiliation><ce:affiliation id="AFF3"><ce:label>c</ce:label><ce:textfn>Department of Biology, University of Saskatchewan, Saskatoon, Canada S7N 0W0</ce:textfn></ce:affiliation><ce:correspondence id="COR1"><ce:label>∗</ce:label><ce:text>Address correspondence to: Professor J. D. Currey, Department of Biology, University of York, York YO1 5DD, England.</ce:text></ce:correspondence></ce:author-group><ce:date-received day="5" month="12" year="1989"></ce:date-received><ce:date-accepted day="15" month="2" year="1990"></ce:date-accepted><ce:abstract class="author"><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para view="all" id="simple-para.0010">Values for Young's modulus of elasticity, ultimate and yield stresses, ultimate and yield strains, work under the stress-strain curve and work of fracture were obtained from tensile and bending tests on specimens of narwhal tusk dentine and cement, femoral bone from young and mature cattle, and reindeer antler. Compared with the cattle bone the narwhal tissues had low Young's moduli, low yield stresses, rather low ultimate stresses and high ultimate strains. In all these properties they were similar to reindeer antler. The calcium content and hardness of the narwhal tissues were compared with those of human and cattle dental tissues. The narwhal dentine was considerably softer and less mineralized than human and cattle dentine. Human cementum was softer and less mineralized than cattle cementum, and was like narwhal cementum. In general, the mechanical properties of the narwhal tusk tissues were as would be expected from their mineral content, except that the stiffness of the cementum was low. It is likely that narwhal dentine is not very similar to human and cattle dentine in its mechanical properties.</ce:simple-para></ce:abstract-sec></ce:abstract><ce:keywords class="keyword"><ce:section-title>Keywords</ce:section-title><ce:keyword><ce:text>narwhal tusk</ce:text></ce:keyword><ce:keyword><ce:text>mechanical properties</ce:text></ce:keyword><ce:keyword><ce:text>dentine</ce:text></ce:keyword><ce:keyword><ce:text>cementum</ce:text></ce:keyword></ce:keywords></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>The mechanical properties of the dentine and cement of the tusk of the narwhal Monodon monoceros compared with those of other mineralized tissues</title></titleInfo><titleInfo type="alternative" lang="en" contentType="CDATA"><title>The mechanical properties of the dentine and cement of the tusk of the narwhal</title></titleInfo><name type="personal"><namePart type="given">K.</namePart><namePart type="family">Break</namePart><affiliation>Department of Biology, University of York, York YO1 5DD, England</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.D.</namePart><namePart type="family">Currey</namePart><affiliation>Address correspondence to: Professor J. D. Currey, Department of Biology, University of York, York YO1 5DD, England.</affiliation><affiliation>Department of Biology, University of York, York YO1 5DD, England</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C.M.</namePart><namePart type="family">Pond</namePart><affiliation>Department of Biology, The Open University, Milton Keynes MK7 6AA, England</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.A.</namePart><namePart type="family">Ramsay</namePart><affiliation>Department of Biology, University of Saskatchewan, Saskatoon, Canada S7N 0W0</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-1JC4F85T-7">research-article</genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1990</dateIssued><copyrightDate encoding="w3cdtf">1990</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><abstract lang="en">Abstract: Values for Young's modulus of elasticity, ultimate and yield stresses, ultimate and yield strains, work under the stress-strain curve and work of fracture were obtained from tensile and bending tests on specimens of narwhal tusk dentine and cement, femoral bone from young and mature cattle, and reindeer antler. Compared with the cattle bone the narwhal tissues had low Young's moduli, low yield stresses, rather low ultimate stresses and high ultimate strains. In all these properties they were similar to reindeer antler. The calcium content and hardness of the narwhal tissues were compared with those of human and cattle dental tissues. The narwhal dentine was considerably softer and less mineralized than human and cattle dentine. Human cementum was softer and less mineralized than cattle cementum, and was like narwhal cementum. In general, the mechanical properties of the narwhal tusk tissues were as would be expected from their mineral content, except that the stiffness of the cementum was low. It is likely that narwhal dentine is not very similar to human and cattle dentine in its mechanical properties.</abstract><subject lang="en"><genre>Keywords</genre><topic>narwhal tusk</topic><topic>mechanical properties</topic><topic>dentine</topic><topic>cementum</topic></subject><relatedItem type="host"><titleInfo><title>Archives of Oral Biology</title></titleInfo><titleInfo type="abbreviated"><title>AOB</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1990</dateIssued></originInfo><identifier type="ISSN">0003-9969</identifier><identifier type="PII">S0003-9969(00)X0164-1</identifier><part><date>1990</date><detail type="volume"><number>35</number><caption>vol.</caption></detail><detail type="issue"><number>8</number><caption>no.</caption></detail><extent unit="issue-pages"><start>575</start><end>688</end></extent><extent unit="pages"><start>615</start><end>621</end></extent></part></relatedItem><identifier type="istex">75F49448D3EE267462C0A6602D83203BFA87E071</identifier><identifier type="ark">ark:/67375/6H6-XJZG99GP-9</identifier><identifier type="DOI">10.1016/0003-9969(90)90027-8</identifier><identifier type="PII">0003-9969(90)90027-8</identifier><identifier type="ArticleID">90900278</identifier><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-HKKZVM7B-M">elsevier</recordContentSource></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/75F49448D3EE267462C0A6602D83203BFA87E071/metadata/json</uri></json:item></metadata></istex></record>Pour manipuler ce document sous Unix (Dilib)
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