Differences in the microstructure and fatigue properties of dentine between residents of North and South America.

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dc.citation.journalTitleARCHIVES OF ORAL BIOLOGYeng
dc.contributor.authorIvancik J
dc.contributor.authorNaranjo M
dc.contributor.authorCorrea S
dc.contributor.authorOssa A
dc.contributor.authorTay FR
dc.contributor.authorPashley DH
dc.contributor.authorArola D
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería Mecánicaspa
dc.contributor.researchgroupBioingeniería GIB (CES – EAFIT)spa
dc.date.accessioned2021-04-12T18:59:05Z
dc.date.available2021-04-12T18:59:05Z
dc.date.issued2014-10-01
dc.description.abstractUNLABELLED: Spatial variations in the microstructure of dentine contribute to its mechanical behaviour. OBJECTIVE: The objective of this investigation was to compare the microstructure and fatigue behaviour of dentine from donors of two different countries. METHODS: Caries-free third molars were obtained from dental practices in Colombia, South America and the US to assemble two age-matched samples. The microstructure of the coronal dentine was evaluated at three characteristic depths (i.e. deep, middle and superficial dentine) using scanning electron microscopy and image processing techniques. The mechanical behaviour of dentine in these three regions was evaluated by the fatigue crack growth resistance. Cyclic crack growth was achieved in-plane with the dentine tubules and the fatigue crack growth behaviour was characterized in terms of the stress intensity threshold and the Paris Law parameters. RESULTS: There was no difference in the tubule density between the dentine of patients from the two countries. However, there were significant differences (p</=0.05) in the tubule lumen diameters between the two groups in the deep and peripheral regions. In regards to the fatigue resistance, there was a significant increase (p</=0.05) in threshold stress intensity range, and a significant decrease in fatigue crack growth coefficient with increasing distance from the pulp in teeth from the US donors. In contrast, these properties were independent of location for the dentine of teeth from the Colombian donors. CONCLUSIONS: The microstructure of dentine and its mechanical behaviour appear to be a function of patient background, which may include environmental factors and/or ethnicity.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1176
dc.identifier.doi10.1016/j.archoralbio.2014.05.028
dc.identifier.issn00039969
dc.identifier.issn18791506
dc.identifier.otherWOS;000341481700001
dc.identifier.otherPUBMED;24960115
dc.identifier.otherSCOPUS;2-s2.0-84903143325
dc.identifier.urihttp://hdl.handle.net/10784/28132
dc.language.isoeng
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relationDOI;10.1016/j.archoralbio.2014.05.028
dc.relationWOS;000341481700001
dc.relationPUBMED;24960115
dc.relationSCOPUS;2-s2.0-84903143325
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84903143325&doi=10.1016%2fj.archoralbio.2014.05.028&partnerID=40&md5=e1b3f7fcebb59423e7d79ea0e9d0f252
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0003-9969
dc.sourceARCHIVES OF ORAL BIOLOGY
dc.subjectDentineeng
dc.subjectFatigue crack growtheng
dc.subjectFractureeng
dc.subjectMicrostructureeng
dc.subjectStrengtheng
dc.subjectTubuleseng
dc.titleDifferences in the microstructure and fatigue properties of dentine between residents of North and South America.eng
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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