Effect of thermal cycling on microleakage between hard chairside relines and denture base acrylic resins

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dc.contributor.authorGiampaolo, Eunice Teresinha [UNESP]
dc.contributor.authorJorge, Janaina Habib [UNESP]
dc.contributor.authorMachado, Ana Lucia [UNESP]
dc.contributor.authorPavarina, Ana Claudia [UNESP]
dc.contributor.authorVergani, Carlos Eduardo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Estadual de Ponta Grossa (UEPG)
dc.date.accessioned2014-05-20T13:46:28Z
dc.date.available2014-05-20T13:46:28Z
dc.date.issued2011-06-01
dc.description.abstractObjectives:Microleakage is a pre-stage of debonding between hard chairside relines and denture base acrylic resins. Therefore, it is important to assess them with regard to the longevity of the relined denture. This study investigated the effect of thermal cycling on the microleakage at the interface of three hard chairside reline resins and three denture base resins.Material and methods:Rectangular bars (12 mm x 3 mm x 3 mm) of Lucitone 550, Acron MC and QC 20 were made and relined with Kooliner, Tokuyama Rebase Fast II and Ufi Gel Hard, Lucitone 550, Acron MC and QC 20 resins. Specimens were divided into one control and two test groups (n = 10). In specimens of the control group, the microleakage was performed after the reline procedure. In Test Group 1, the specimens were stored for 24 h in distilled water at room temperature and in Test Group 2; the specimens were thermal cycled from 5 to 55 degrees C for 5000 cycles with a 30-s dwell time. Subsequently, all specimens were immersed in 50% silver nitrate solutions for 24 h. All specimens were sectioned longitudinally into three fractions and the lateral sections were examined (n = 20). Silver nitrate stain penetration was examined under a stereoscopic lens with x30 magnification, and the images were captured. Leica Qwin image analysis software was used to determine microleakage at the interface of the materials. Data were analysed using the Kruskal-Wallis test at a 95% level of significance.Results:For all cycles, there were no statistically significant differences between thermal cycled and non-thermal cycled groups (p > 0.05).Conclusion:It can be concluded that thermal cycling had no effect on the microleakage.en
dc.description.affiliationSão Paulo State Univ, Araraquara Dent Sch, UNESP, Dept Dent Mat & Prosthodont, BR-14801903 São Paulo, Brazil
dc.description.affiliationUniversidade Estadual de Ponta Grossa (UEPG), Dept Dent, Ponta Grossa, Parana, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Araraquara Dent Sch, UNESP, Dept Dent Mat & Prosthodont, BR-14801903 São Paulo, Brazil
dc.format.extent121-126
dc.identifierhttp://dx.doi.org/10.1111/j.1741-2358.2009.00332.x
dc.identifier.citationGerodontology. Malden: Wiley-blackwell, v. 28, n. 2, p. 121-126, 2011.
dc.identifier.doi10.1111/j.1741-2358.2009.00332.x
dc.identifier.issn0734-0664
dc.identifier.lattes5737127334248549
dc.identifier.lattes8000248781842587
dc.identifier.lattes8867670539105403
dc.identifier.lattes3003130522427820
dc.identifier.orcid0000-0002-7375-4714
dc.identifier.urihttp://hdl.handle.net/11449/16450
dc.identifier.wosWOS:000290733500008
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofGerodontology
dc.relation.ispartofjcr1.439
dc.relation.ispartofsjr0,627
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectthermal cyclingen
dc.subjectmicroleakageen
dc.subjectacrylic resinsen
dc.titleEffect of thermal cycling on microleakage between hard chairside relines and denture base acrylic resinsen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-blackwell
unesp.author.lattes5737127334248549
unesp.author.lattes8000248781842587[3]
unesp.author.lattes8867670539105403[4]
unesp.author.lattes3003130522427820[5]
unesp.author.orcid0000-0002-7375-4714[5]
unesp.author.orcid0000-0002-9135-3455[2]
unesp.author.orcid0000-0002-9231-1994[4]
unesp.author.orcid0000-0002-2718-428X[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt

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