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Tribological behavior of restorative dental microcomposites after exposure to mouth acids

2019-09Journal article Restricted access
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dc.contributor.authorBranco, A. C.
dc.contributor.authorBrito, J.
dc.contributor.authorCodorniz, M.
dc.contributor.authorSteinhausen, M.
dc.contributor.authorMartins, F.
dc.contributor.authorReis, J.
dc.contributor.authorMaurício, P.
dc.contributor.authorColaço, R.
dc.contributor.authorSerro, A. P.
dc.date.accessioned2020-10-21T15:53:06Z
dc.date.available2020-10-21T15:53:06Z
dc.date.issued2019-09
dc.description.abstractIn this work, the effect of the exposure to acids that are usually present in the mouth environment on the tribological behavior of restorative dental microcomposites is evaluated. A commercial microcomposite widely used in dentistry (Filtek Z250) and a strong and a week acid that are part of the mouth environment (hydrochloric and lactic acid, respectively) were chosen for the study. Samples of the microcomposite were exposed to each acid for two different periods: 1 day and 7 days, respectively. It was observed that the exposure to both acids lead to an increase of the surface roughness, especially in the samples that contacted for the shorter period with hydrochloric acid, and the same trend was observed in what concerns the coefficient of friction. Concomitantly, the resins’ microhardness suffered a small decreased after exposure to both acids. However, it was observed that the wear resistance of the microcomposite is only affected in a statistically significant manner after the exposition to the hydrochloric acid solution. Atomic force microscopy observation of the worn regions enables to attribute the decrease of the wear resistance of the material after the exposure to the strong acid to the detachment of the resin’s filler microparticles of silica and zirconia caused by the corrosive action of the strong acid. The results strongly suggest that the exposure to acids affects the dental resins’ tribomechanical performance which may compromise the restorations’ lifetime, especially in the case of exposure to the strong acids, such as hydrochloric.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBranco, A.C., Brito, J., Codorniz, M. et al. Tribological Behavior of Restorative Dental Microcomposites After Exposure to Mouth Acids. Tribol Lett 67, 90 (2019). https://doi.org/10.1007/s11249-019-1204-5pt_PT
dc.identifier.doi10.1007/s11249-019-1204-5pt_PT
dc.identifier.issn1023-8883
dc.identifier.issn1573-2711
dc.identifier.urihttp://hdl.handle.net/10400.26/33720
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relationAssociate Laboratory of Energy, Transports and Aeronautics
dc.relationCentro de Química Estrutural
dc.relation.publisherversionhttps://doi.org/10.1007/s11249-019-1204-5pt_PT
dc.subjectMicrocompositept_PT
dc.subjectAcidspt_PT
dc.subjectMicrohardnesspt_PT
dc.subjectRoughnesspt_PT
dc.subjectFriction coeficientpt_PT
dc.subjectDental microcompositept_PT
dc.subjectLactic acidpt_PT
dc.subjectHydrochloric acidpt_PT
dc.subjectFriction pt_PT
dc.subjectWearpt_PT
dc.titleTribological behavior of restorative dental microcomposites after exposure to mouth acidspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aeronautics
oaire.awardTitleCentro de Química Estrutural
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FEMS%2F50022%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FQUI%2F00100%2F2013/PT
oaire.citation.startPage90pt_PT
oaire.citation.titleTribology Letterspt_PT
oaire.citation.volume67(3)pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.embargofctPolítica de copyright do editorpt_PT
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isProjectOfPublicationfe42e3c9-a03b-4188-8986-a5090a0994de
relation.isProjectOfPublication59469fd7-479b-4e24-9aee-66d1c7d6593e
relation.isProjectOfPublication.latestForDiscoveryfe42e3c9-a03b-4188-8986-a5090a0994de

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