Brief communication: Correlation between elastic modulus and radiographic density in mandibular cortical bone of colobine monkeys
Objectives The relationship between radiographic grayscale and elastic modulus was determined using mandibular cortical bone of colobine monkeys. Quantification of this relationship is critical for establishing absolute measures of structural rigidity of skeletal elements. Materials and methods We d...
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| Veröffentlicht in: | American journal of physical anthropology 2017-05, Vol.163 (1), p.187-191 |
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| container_title | American journal of physical anthropology |
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| creator | Rapoff, Andrew J. Scott McGraw, W. Duque, Ana Daegling, David J. |
| description | Objectives
The relationship between radiographic grayscale and elastic modulus was determined using mandibular cortical bone of colobine monkeys. Quantification of this relationship is critical for establishing absolute measures of structural rigidity of skeletal elements.
Materials and methods
We determined the Vickers microhardness values in mandibular bone from two species of African colobine monkeys and related these values to elastic modulus through an empirically determined correlation. We also determined radiographic grayscale values from microcomputed tomographic scans of the mandible in the same regions in which microhardness was sampled. We then correlated modulus to grayscale with a power law relationship.
Results
We found that elastic modulus scaled with negative allometry with respect to grayscale with an exponent of 0.77.
Discussion
Our results suggest a single exponent can effectively capture the relationship of grayscale to elastic modulus and facilitate development of heterogeneous structural models for use in comparative and computational biomechanical studies. |
| doi_str_mv | 10.1002/ajpa.23179 |
| format | Article |
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The relationship between radiographic grayscale and elastic modulus was determined using mandibular cortical bone of colobine monkeys. Quantification of this relationship is critical for establishing absolute measures of structural rigidity of skeletal elements.
Materials and methods
We determined the Vickers microhardness values in mandibular bone from two species of African colobine monkeys and related these values to elastic modulus through an empirically determined correlation. We also determined radiographic grayscale values from microcomputed tomographic scans of the mandible in the same regions in which microhardness was sampled. We then correlated modulus to grayscale with a power law relationship.
Results
We found that elastic modulus scaled with negative allometry with respect to grayscale with an exponent of 0.77.
Discussion
Our results suggest a single exponent can effectively capture the relationship of grayscale to elastic modulus and facilitate development of heterogeneous structural models for use in comparative and computational biomechanical studies.</description><identifier>ISSN: 0002-9483</identifier><identifier>EISSN: 1096-8644</identifier><identifier>EISSN: 2692-7691</identifier><identifier>DOI: 10.1002/ajpa.23179</identifier><identifier>PMID: 28164262</identifier><identifier>CODEN: AJPNA9</identifier><language>eng</language><publisher>United States: Wiley Subscription Services, Inc</publisher><subject>Allometry ; Animals ; bending ; Biomechanical Phenomena ; Biomechanics ; Bone density ; Bone mineral density ; Colobinae - anatomy & histology ; Colobinae - physiology ; computed tomography ; Cortical Bone - diagnostic imaging ; Cortical Bone - physiology ; Elastic Modulus - physiology ; Female ; Male ; Mandible - diagnostic imaging ; Mandible - physiology ; Measurement ; moment of inertia ; Monkeys & apes ; Power ; Primates ; Rigidity ; Structural models ; torsion ; Values ; X-Ray Microtomography</subject><ispartof>American journal of physical anthropology, 2017-05, Vol.163 (1), p.187-191</ispartof><rights>2017 Wiley Periodicals, Inc.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4219-7e98e36169f318515bf00246b1d180578f04529bf041f24102a2af25ecd303623</citedby><cites>FETCH-LOGICAL-c4219-7e98e36169f318515bf00246b1d180578f04529bf041f24102a2af25ecd303623</cites><orcidid>0000-0002-4776-1910</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fajpa.23179$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fajpa.23179$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28164262$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Rapoff, Andrew J.</creatorcontrib><creatorcontrib>Scott McGraw, W.</creatorcontrib><creatorcontrib>Duque, Ana</creatorcontrib><creatorcontrib>Daegling, David J.</creatorcontrib><title>Brief communication: Correlation between elastic modulus and radiographic density in mandibular cortical bone of colobine monkeys</title><title>American journal of physical anthropology</title><addtitle>Am J Phys Anthropol</addtitle><description>Objectives
The relationship between radiographic grayscale and elastic modulus was determined using mandibular cortical bone of colobine monkeys. Quantification of this relationship is critical for establishing absolute measures of structural rigidity of skeletal elements.
Materials and methods
We determined the Vickers microhardness values in mandibular bone from two species of African colobine monkeys and related these values to elastic modulus through an empirically determined correlation. We also determined radiographic grayscale values from microcomputed tomographic scans of the mandible in the same regions in which microhardness was sampled. We then correlated modulus to grayscale with a power law relationship.
Results
We found that elastic modulus scaled with negative allometry with respect to grayscale with an exponent of 0.77.
Discussion
Our results suggest a single exponent can effectively capture the relationship of grayscale to elastic modulus and facilitate development of heterogeneous structural models for use in comparative and computational biomechanical studies.</description><subject>Allometry</subject><subject>Animals</subject><subject>bending</subject><subject>Biomechanical Phenomena</subject><subject>Biomechanics</subject><subject>Bone density</subject><subject>Bone mineral density</subject><subject>Colobinae - anatomy & histology</subject><subject>Colobinae - physiology</subject><subject>computed tomography</subject><subject>Cortical Bone - diagnostic imaging</subject><subject>Cortical Bone - physiology</subject><subject>Elastic Modulus - physiology</subject><subject>Female</subject><subject>Male</subject><subject>Mandible - diagnostic imaging</subject><subject>Mandible - physiology</subject><subject>Measurement</subject><subject>moment of inertia</subject><subject>Monkeys & apes</subject><subject>Power</subject><subject>Primates</subject><subject>Rigidity</subject><subject>Structural models</subject><subject>torsion</subject><subject>Values</subject><subject>X-Ray Microtomography</subject><issn>0002-9483</issn><issn>1096-8644</issn><issn>2692-7691</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kU9vFCEYxonR2G314gcwJF6MyVRe_g14WzdWbZroQc-EmWGUlYEVZtLssd9ctlt76KEJBB7e3_sAeRB6BeQcCKHv7XZnzymDVj9BKyBaNkpy_hStSK02mit2gk5L2VYp63iOTqgCyamkK3TzMXs34j5N0xJ9b2ef4ge8STm7cCtw5-Zr5yKuusy-x1MalrAUbOOAsx18-pXt7nctDC4WP--xj3iqRd8twebqnGuXDbhL0eF0uCqkztf9lOIfty8v0LPRhuJe3q1n6OfFpx-bL83Vt89fN-urpucUdNM6rRyTIPXIQAkQ3Vh_x2UHAygiWjUSLqiupxxGyoFQS-1IhesHRpik7Ay9Pfrucvq7uDKbyZfehWCjS0sxoKQQjAIc0DcP0G1acqyvM6CBipbp9nFKKS3qlKpS745Un1Mp2Y1ml_1k894AMYf4zCE-cxtfhV_fWS7d5IZ79H9eFYAjcO2D2z9iZdaX39dH038IhKSD</recordid><startdate>201705</startdate><enddate>201705</enddate><creator>Rapoff, Andrew J.</creator><creator>Scott McGraw, W.</creator><creator>Duque, Ana</creator><creator>Daegling, David J.</creator><general>Wiley Subscription Services, Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BJ</scope><scope>FQK</scope><scope>JBE</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-4776-1910</orcidid></search><sort><creationdate>201705</creationdate><title>Brief communication: Correlation between elastic modulus and radiographic density in mandibular cortical bone of colobine monkeys</title><author>Rapoff, Andrew J. ; Scott McGraw, W. ; Duque, Ana ; Daegling, David J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4219-7e98e36169f318515bf00246b1d180578f04529bf041f24102a2af25ecd303623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Allometry</topic><topic>Animals</topic><topic>bending</topic><topic>Biomechanical Phenomena</topic><topic>Biomechanics</topic><topic>Bone density</topic><topic>Bone mineral density</topic><topic>Colobinae - anatomy & histology</topic><topic>Colobinae - physiology</topic><topic>computed tomography</topic><topic>Cortical Bone - diagnostic imaging</topic><topic>Cortical Bone - physiology</topic><topic>Elastic Modulus - physiology</topic><topic>Female</topic><topic>Male</topic><topic>Mandible - diagnostic imaging</topic><topic>Mandible - physiology</topic><topic>Measurement</topic><topic>moment of inertia</topic><topic>Monkeys & apes</topic><topic>Power</topic><topic>Primates</topic><topic>Rigidity</topic><topic>Structural models</topic><topic>torsion</topic><topic>Values</topic><topic>X-Ray Microtomography</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rapoff, Andrew J.</creatorcontrib><creatorcontrib>Scott McGraw, W.</creatorcontrib><creatorcontrib>Duque, Ana</creatorcontrib><creatorcontrib>Daegling, David J.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>International Bibliography of the Social Sciences (IBSS)</collection><collection>International Bibliography of the Social Sciences</collection><collection>International Bibliography of the Social Sciences</collection><collection>MEDLINE - Academic</collection><jtitle>American journal of physical anthropology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rapoff, Andrew J.</au><au>Scott McGraw, W.</au><au>Duque, Ana</au><au>Daegling, David J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Brief communication: Correlation between elastic modulus and radiographic density in mandibular cortical bone of colobine monkeys</atitle><jtitle>American journal of physical anthropology</jtitle><addtitle>Am J Phys Anthropol</addtitle><date>2017-05</date><risdate>2017</risdate><volume>163</volume><issue>1</issue><spage>187</spage><epage>191</epage><pages>187-191</pages><issn>0002-9483</issn><eissn>1096-8644</eissn><eissn>2692-7691</eissn><coden>AJPNA9</coden><abstract>Objectives
The relationship between radiographic grayscale and elastic modulus was determined using mandibular cortical bone of colobine monkeys. Quantification of this relationship is critical for establishing absolute measures of structural rigidity of skeletal elements.
Materials and methods
We determined the Vickers microhardness values in mandibular bone from two species of African colobine monkeys and related these values to elastic modulus through an empirically determined correlation. We also determined radiographic grayscale values from microcomputed tomographic scans of the mandible in the same regions in which microhardness was sampled. We then correlated modulus to grayscale with a power law relationship.
Results
We found that elastic modulus scaled with negative allometry with respect to grayscale with an exponent of 0.77.
Discussion
Our results suggest a single exponent can effectively capture the relationship of grayscale to elastic modulus and facilitate development of heterogeneous structural models for use in comparative and computational biomechanical studies.</abstract><cop>United States</cop><pub>Wiley Subscription Services, Inc</pub><pmid>28164262</pmid><doi>10.1002/ajpa.23179</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0002-4776-1910</orcidid><oa>free_for_read</oa></addata></record> |
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| source | MEDLINE; Wiley Journals |
| subjects | Allometry Animals bending Biomechanical Phenomena Biomechanics Bone density Bone mineral density Colobinae - anatomy & histology Colobinae - physiology computed tomography Cortical Bone - diagnostic imaging Cortical Bone - physiology Elastic Modulus - physiology Female Male Mandible - diagnostic imaging Mandible - physiology Measurement moment of inertia Monkeys & apes Power Primates Rigidity Structural models torsion Values X-Ray Microtomography |
| title | Brief communication: Correlation between elastic modulus and radiographic density in mandibular cortical bone of colobine monkeys |
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