Reduction in Fracture Resistance of the Root with Aging

Vista sencilla de ítem
dc.citation.journalTitleJournal Of Endodontics
dc.contributor.authorYan W.
dc.contributor.authorMontoya C.
dc.contributor.authorØilo M.
dc.contributor.authorOssa A.
dc.contributor.authorParanjpe A.
dc.contributor.authorZhang H.
dc.contributor.authorArola D.
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería de Producciónspa
dc.contributor.researchgroupMateriales de Ingenieríaspa
dc.creatorYan W.
dc.creatorMontoya C.
dc.creatorØilo M.
dc.creatorOssa A.
dc.creatorParanjpe A.
dc.creatorZhang H.
dc.creatorArola D.
dc.date.accessioned2021-04-12T21:26:44Z
dc.date.available2021-04-12T21:26:44Z
dc.date.issued2017-09-01
dc.description.abstractIntroduction: The incidence of vertical root fracture in endodontically treated teeth increases with patient age. This study evaluated the microstructure, chemical composition, and mechanical properties of radicular dentin as a function of aging. Methods: Single-rooted teeth were obtained from adult donors ranging from age 15 to older than 80 years. Beams were extracted from the middle third of the root and subjected to 4-point flexure to failure to evaluate strength of dentin in terms of donor age. Based on the strength distribution, the fatigue strength of root tissue from young (<= 30 years) and old (>= 55 years) donor teeth was evaluated via cyclic flexure loading. The microstructure and chemical composition of radicular dentin from the 2 groups were evaluated as a function of distance from the root apex using microscopy and Raman spectroscopy, respectively. Results: The strength decreased with age by approximately 25 MPa per decade, which resulted in a significant difference (P <= .0001) between the young (199 +/- 36 MPa) and old (122 +/- 11 MPa) groups. There was also a significant difference (P <= .0001) in fatigue strength between the young and old age groups. Both the mineral-to-collagen ratio and degree of cross-linking increased with age, with the largest changes identified in the apical and middle thirds, respectively. Conclusions: There is a reduction in the damage tolerance of radicular dentin with increasing age. This degradation appears to result from changes in the microstructure, corresponding chemical composition, and increase in collagen cross-linking with age, and is most severe near the root apex.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=6889
dc.identifier.doi10.1016/j.joen.2017.04.020
dc.identifier.issn00992399
dc.identifier.issn18783554
dc.identifier.otherWOS;000410720400017
dc.identifier.otherPUBMED;28712639
dc.identifier.otherSCOPUS;2-s2.0-85023643907
dc.identifier.urihttp://hdl.handle.net/10784/29110
dc.language.isoeng
dc.publisherElsevier Inc.
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85023643907&doi=10.1016%2fj.joen.2017.04.020&partnerID=40&md5=9a388c38d63f98f1762f264774d9f86a
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0099-2399
dc.sourceJournal Of Endodontics
dc.subjectAgingeng
dc.subjectcollageneng
dc.subjectdentineng
dc.subjectfractureeng
dc.subjectrooteng
dc.subjectstrengtheng
dc.titleReduction in Fracture Resistance of the Root with Agingeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

Archivos

Bloque original
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
101915eqs155dp.pdf
Tamaño:
1.18 MB
Formato:
Adobe Portable Document Format
Descripción:
Descargar

Colecciones

Artículos