Effect of long-term water immersion on the fracture toughness of denture base and reline resins

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dc.contributor.authorFinoti, Livia Sertori [UNESP]
dc.contributor.authorMachado, Ana Lucia [UNESP]
dc.contributor.authorLima Chaves, Carolina de Andrade [UNESP]
dc.contributor.authorPavarina, Ana Claudia [UNESP]
dc.contributor.authorVergani, Carlos Eduardo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:46:33Z
dc.date.available2014-05-20T13:46:33Z
dc.date.issued2012-06-01
dc.description.abstractpurpose: This study evaluated the fracture toughness (FT) of one denture base (Lucitone 550 - L) and four hard reline resins [Ufi Gel Hard (UH), Tokuyama Rebase II (TR), New Truliner (NT) and Kooliner (K)], and the effect of long-term water storage on this property.Materials and methods: Forty specimens (40 x 8 x 4 mm) of each material were made, and FT was assessed after polymerisation (control of reliners), after 48 +/- 2 h in water at 37 degrees C (control of denture base resin) and after storage in water at 37 degrees C for 7, 90 or 180 days (all materials). Data (MPa. m(1/2)) were analysed by two-way ANOVA and Games-Howell test (p = 0.05).Results: Resin L exhibited the highest FT mean values. After 180 days of storage, FT mean values of L (3.37), UH (1.53) and K (1.20) were higher than those of the other periods. FT mean values of NT decreased from control (1.63) to 7 days (1.30) and then remained constant. FT mean values of TR (1.13) were similar in all periods of analysis.Conclusion: The denture base resin L showed higher FT mean values than the reline resins. Long-term water storage increased the FT of L, UH and K, reduced the FT of NT and did not influence the FT of TR.en
dc.description.affiliationUniv Estadual Paulista, UNESP, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, BR-14801903 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, BR-14801903 Araraquara, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extentE858-E864
dc.identifierhttp://dx.doi.org/10.1111/j.1741-2358.2011.00573.x
dc.identifier.citationGerodontology. Hoboken: Wiley-blackwell, v. 29, n. 2, p. E858-E864, 2012.
dc.identifier.doi10.1111/j.1741-2358.2011.00573.x
dc.identifier.issn0734-0664
dc.identifier.lattes8000248781842587
dc.identifier.lattes8867670539105403
dc.identifier.lattes3003130522427820
dc.identifier.orcid0000-0002-7375-4714
dc.identifier.urihttp://hdl.handle.net/11449/16485
dc.identifier.wosWOS:000308547000121
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofGerodontology
dc.relation.ispartofjcr1.439
dc.relation.ispartofsjr0,627
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectacrylic resinen
dc.subjectwater storageen
dc.subjectmechanical propertiesen
dc.subjecttoughnessen
dc.titleEffect of long-term water immersion on the fracture toughness of denture base and reline resinsen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-blackwell
unesp.author.lattes8000248781842587[2]
unesp.author.lattes8867670539105403[4]
unesp.author.lattes3003130522427820[5]
unesp.author.orcid0000-0002-7375-4714[5]
unesp.author.orcid0000-0002-9231-1994[4]
unesp.author.orcid0000-0002-2718-428X[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt

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