Root fractures in seniors: Consequences of acute embrittlement of dentin
•Scanning mode nanoDMA was used to evaluate the dynamic mechanical properties of intertubular and peritubular dentin.•The intertubular dentin from the old donor teeth exhibited higher storage and complex moduli than those of young donor teeth.•The root canal treated teeth exhibited higher storage.•C...
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| Veröffentlicht in: | Dental materials 2020-11, Vol.36 (11), p.1464-1473 |
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| creator | Yan, W. Chen, H. Fernandez-Arteaga, J. Paranjpe, A. Zhang, H. Arola, D. |
| description | •Scanning mode nanoDMA was used to evaluate the dynamic mechanical properties of intertubular and peritubular dentin.•The intertubular dentin from the old donor teeth exhibited higher storage and complex moduli than those of young donor teeth.•The root canal treated teeth exhibited higher storage.•Complex moduli and lower capacity for viscous deformation than that of the vital matched pairs.
Dentin undergoes irreversible changes in microstructure with aging that involve gradual filling of the tubule lumens with mineral. Known as dental sclerosis, this process begins at the root apex, progresses coronally, and is associated with a degradation in the resistance to fracture of dentin.
To determine i) age-related changes of intertubular dentin with aging, particularly within the root, and ii) the differences in age-related degradation between vital and pulpless (i.e. non-vital) teeth.
We performed nanoscopic dynamic mechanical analysis (nanoDMA) in scanning mode on the intertubular and peritubular dentin of teeth from young and old adults. The complex, loss and storage moduli, as well as the tan delta parameter were evaluated for teeth with no restorations and teeth with root canal treatment (non-vital).
There were significant changes in the dynamic moduli of intertubular dentin with age, which were most substantial in the apical third of the root. The storage modulus of the intertubular dentin, which quantifies the purely elastic resistance to deformation, was significantly (p < 0.0005) larger for both the old vital and non-vital teeth than that of the young teeth, over the entire root length. However, the tan delta parameter, which quantifies the relative capacity for viscous deformation, was significantly lower in these two groups (p < 0.005).
Radicular dentin undergoes an embrittlement with aging, involving reduced capacity for viscous deformation. The extent of degradation is largest in the apical third. Removal of the pulp appears to accelerate the aging process or compound the extent of degradation. |
| doi_str_mv | 10.1016/j.dental.2020.08.008 |
| format | Article |
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Dentin undergoes irreversible changes in microstructure with aging that involve gradual filling of the tubule lumens with mineral. Known as dental sclerosis, this process begins at the root apex, progresses coronally, and is associated with a degradation in the resistance to fracture of dentin.
To determine i) age-related changes of intertubular dentin with aging, particularly within the root, and ii) the differences in age-related degradation between vital and pulpless (i.e. non-vital) teeth.
We performed nanoscopic dynamic mechanical analysis (nanoDMA) in scanning mode on the intertubular and peritubular dentin of teeth from young and old adults. The complex, loss and storage moduli, as well as the tan delta parameter were evaluated for teeth with no restorations and teeth with root canal treatment (non-vital).
There were significant changes in the dynamic moduli of intertubular dentin with age, which were most substantial in the apical third of the root. The storage modulus of the intertubular dentin, which quantifies the purely elastic resistance to deformation, was significantly (p < 0.0005) larger for both the old vital and non-vital teeth than that of the young teeth, over the entire root length. However, the tan delta parameter, which quantifies the relative capacity for viscous deformation, was significantly lower in these two groups (p < 0.005).
Radicular dentin undergoes an embrittlement with aging, involving reduced capacity for viscous deformation. The extent of degradation is largest in the apical third. Removal of the pulp appears to accelerate the aging process or compound the extent of degradation.</description><identifier>ISSN: 0109-5641</identifier><identifier>EISSN: 1879-0097</identifier><identifier>DOI: 10.1016/j.dental.2020.08.008</identifier><language>eng</language><publisher>Amsterdam: Elsevier Inc</publisher><subject>Age ; Aging ; Deformation ; Deformation resistance ; Degradation ; Dental pulp ; Dentin ; Dentistry ; Dynamic mechanical analysis ; Elastic deformation ; Embrittlement ; Fractures ; Lumens ; Modulus of elasticity ; Parameters ; Root canals ; Root fracture ; Sclerosis ; Storage modulus ; Teeth</subject><ispartof>Dental materials, 2020-11, Vol.36 (11), p.1464-1473</ispartof><rights>2020 The Academy of Dental Materials</rights><rights>Copyright Elsevier BV Nov 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c282t-d06cc9490566352e387fc0a52d8c84f4fe43248cb22dd3844601ada2d075a74e3</citedby><cites>FETCH-LOGICAL-c282t-d06cc9490566352e387fc0a52d8c84f4fe43248cb22dd3844601ada2d075a74e3</cites><orcidid>0000-0001-9140-2758 ; 0000-0003-2919-7903</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.dental.2020.08.008$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Yan, W.</creatorcontrib><creatorcontrib>Chen, H.</creatorcontrib><creatorcontrib>Fernandez-Arteaga, J.</creatorcontrib><creatorcontrib>Paranjpe, A.</creatorcontrib><creatorcontrib>Zhang, H.</creatorcontrib><creatorcontrib>Arola, D.</creatorcontrib><title>Root fractures in seniors: Consequences of acute embrittlement of dentin</title><title>Dental materials</title><description>•Scanning mode nanoDMA was used to evaluate the dynamic mechanical properties of intertubular and peritubular dentin.•The intertubular dentin from the old donor teeth exhibited higher storage and complex moduli than those of young donor teeth.•The root canal treated teeth exhibited higher storage.•Complex moduli and lower capacity for viscous deformation than that of the vital matched pairs.
Dentin undergoes irreversible changes in microstructure with aging that involve gradual filling of the tubule lumens with mineral. Known as dental sclerosis, this process begins at the root apex, progresses coronally, and is associated with a degradation in the resistance to fracture of dentin.
To determine i) age-related changes of intertubular dentin with aging, particularly within the root, and ii) the differences in age-related degradation between vital and pulpless (i.e. non-vital) teeth.
We performed nanoscopic dynamic mechanical analysis (nanoDMA) in scanning mode on the intertubular and peritubular dentin of teeth from young and old adults. The complex, loss and storage moduli, as well as the tan delta parameter were evaluated for teeth with no restorations and teeth with root canal treatment (non-vital).
There were significant changes in the dynamic moduli of intertubular dentin with age, which were most substantial in the apical third of the root. The storage modulus of the intertubular dentin, which quantifies the purely elastic resistance to deformation, was significantly (p < 0.0005) larger for both the old vital and non-vital teeth than that of the young teeth, over the entire root length. However, the tan delta parameter, which quantifies the relative capacity for viscous deformation, was significantly lower in these two groups (p < 0.005).
Radicular dentin undergoes an embrittlement with aging, involving reduced capacity for viscous deformation. The extent of degradation is largest in the apical third. Removal of the pulp appears to accelerate the aging process or compound the extent of degradation.</description><subject>Age</subject><subject>Aging</subject><subject>Deformation</subject><subject>Deformation resistance</subject><subject>Degradation</subject><subject>Dental pulp</subject><subject>Dentin</subject><subject>Dentistry</subject><subject>Dynamic mechanical analysis</subject><subject>Elastic deformation</subject><subject>Embrittlement</subject><subject>Fractures</subject><subject>Lumens</subject><subject>Modulus of elasticity</subject><subject>Parameters</subject><subject>Root canals</subject><subject>Root fracture</subject><subject>Sclerosis</subject><subject>Storage modulus</subject><subject>Teeth</subject><issn>0109-5641</issn><issn>1879-0097</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kEFLxDAQhYMouK7-Aw8FL15aJ2naph4EWdQVFgTRc8gmU0hpmzVJBf-9rfXkwdPAzDfvzTxCLilkFGh502YGh6i6jAGDDEQGII7IioqqTgHq6pisgEKdFiWnp-QshBYAOKvpimxfnYtJ45WOo8eQ2CEJOFjnw22ycUPAjxEHPQ1ckyg9Rkyw33sbY4f95Dm3Z287nJOTRnUBL37rmrw_Prxttunu5el5c79LNRMspgZKrWteQ1GWecEwF1WjQRXMCC14wxvkOeNC7xkzJhecl0CVUcxAVaiKY74m14vuwbvpthBlb4PGrlMDujFIxjkXlShyPqFXf9DWjX6YrpuosmaQ5yAmii-U9i4Ej408eNsr_yUpyDle2colXjnHK0FI-Fm7W9ZwevbTopdB2zkqYz3qKI2z_wt8A9LjhDY</recordid><startdate>202011</startdate><enddate>202011</enddate><creator>Yan, W.</creator><creator>Chen, H.</creator><creator>Fernandez-Arteaga, J.</creator><creator>Paranjpe, A.</creator><creator>Zhang, H.</creator><creator>Arola, D.</creator><general>Elsevier Inc</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QP</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>K9.</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0001-9140-2758</orcidid><orcidid>https://orcid.org/0000-0003-2919-7903</orcidid></search><sort><creationdate>202011</creationdate><title>Root fractures in seniors: Consequences of acute embrittlement of dentin</title><author>Yan, W. ; Chen, H. ; Fernandez-Arteaga, J. ; Paranjpe, A. ; Zhang, H. ; Arola, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c282t-d06cc9490566352e387fc0a52d8c84f4fe43248cb22dd3844601ada2d075a74e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Age</topic><topic>Aging</topic><topic>Deformation</topic><topic>Deformation resistance</topic><topic>Degradation</topic><topic>Dental pulp</topic><topic>Dentin</topic><topic>Dentistry</topic><topic>Dynamic mechanical analysis</topic><topic>Elastic deformation</topic><topic>Embrittlement</topic><topic>Fractures</topic><topic>Lumens</topic><topic>Modulus of elasticity</topic><topic>Parameters</topic><topic>Root canals</topic><topic>Root fracture</topic><topic>Sclerosis</topic><topic>Storage modulus</topic><topic>Teeth</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yan, W.</creatorcontrib><creatorcontrib>Chen, H.</creatorcontrib><creatorcontrib>Fernandez-Arteaga, J.</creatorcontrib><creatorcontrib>Paranjpe, A.</creatorcontrib><creatorcontrib>Zhang, H.</creatorcontrib><creatorcontrib>Arola, D.</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Biotechnology Research Abstracts</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Dental materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yan, W.</au><au>Chen, H.</au><au>Fernandez-Arteaga, J.</au><au>Paranjpe, A.</au><au>Zhang, H.</au><au>Arola, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Root fractures in seniors: Consequences of acute embrittlement of dentin</atitle><jtitle>Dental materials</jtitle><date>2020-11</date><risdate>2020</risdate><volume>36</volume><issue>11</issue><spage>1464</spage><epage>1473</epage><pages>1464-1473</pages><issn>0109-5641</issn><eissn>1879-0097</eissn><abstract>•Scanning mode nanoDMA was used to evaluate the dynamic mechanical properties of intertubular and peritubular dentin.•The intertubular dentin from the old donor teeth exhibited higher storage and complex moduli than those of young donor teeth.•The root canal treated teeth exhibited higher storage.•Complex moduli and lower capacity for viscous deformation than that of the vital matched pairs.
Dentin undergoes irreversible changes in microstructure with aging that involve gradual filling of the tubule lumens with mineral. Known as dental sclerosis, this process begins at the root apex, progresses coronally, and is associated with a degradation in the resistance to fracture of dentin.
To determine i) age-related changes of intertubular dentin with aging, particularly within the root, and ii) the differences in age-related degradation between vital and pulpless (i.e. non-vital) teeth.
We performed nanoscopic dynamic mechanical analysis (nanoDMA) in scanning mode on the intertubular and peritubular dentin of teeth from young and old adults. The complex, loss and storage moduli, as well as the tan delta parameter were evaluated for teeth with no restorations and teeth with root canal treatment (non-vital).
There were significant changes in the dynamic moduli of intertubular dentin with age, which were most substantial in the apical third of the root. The storage modulus of the intertubular dentin, which quantifies the purely elastic resistance to deformation, was significantly (p < 0.0005) larger for both the old vital and non-vital teeth than that of the young teeth, over the entire root length. However, the tan delta parameter, which quantifies the relative capacity for viscous deformation, was significantly lower in these two groups (p < 0.005).
Radicular dentin undergoes an embrittlement with aging, involving reduced capacity for viscous deformation. The extent of degradation is largest in the apical third. Removal of the pulp appears to accelerate the aging process or compound the extent of degradation.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><doi>10.1016/j.dental.2020.08.008</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0001-9140-2758</orcidid><orcidid>https://orcid.org/0000-0003-2919-7903</orcidid></addata></record> |
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| subjects | Age Aging Deformation Deformation resistance Degradation Dental pulp Dentin Dentistry Dynamic mechanical analysis Elastic deformation Embrittlement Fractures Lumens Modulus of elasticity Parameters Root canals Root fracture Sclerosis Storage modulus Teeth |
| title | Root fractures in seniors: Consequences of acute embrittlement of dentin |
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