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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleEffect of gamma radiation on bonding to human enamel and dentinpt_BR
dc.contributor.authorNaves, LZpt_BR
dc.contributor.authorNovais, VRpt_BR
dc.contributor.authorArmstrong, SRpt_BR
dc.contributor.authorCorrer-Sobrinho, Lpt_BR
dc.contributor.authorSoares, CJpt_BR
unicamp.author.emailcarlosjsoares@umurama.ufu.brpt_BR
unicamp.authorNaves, Lucas Z. Novais, Veridiana R. Soares, Carlos J. Univ Fed Uberlandia, Sch Dent, Biomech Res Grp, Operat Dent & Dent Mat Dept, BR-38405902 Uberlandia, MG, Brazilpt_BR
unicamp.authorNaves, Lucas Z. Correr-Sobrinho, Lourenco Univ Campinas UNICAMP, Piracicaba Dent Sch, Dent Mat Div, Dept Restorat Dent, BR-13414903 Sao Paulo, Brazilpt_BR
unicamp.authorArmstrong, Steven R. Univ Iowa, Dept Operat Dent, Coll Dent, Iowa City, IA 52242 USApt_BR
dc.subjectBond strengthpt_BR
dc.subjectMicrotensilept_BR
dc.subjectDentinpt_BR
dc.subjectEnamelpt_BR
dc.subjectGamma radiationpt_BR
dc.subjectRadiotherapypt_BR
dc.subject.wosX-ray-irradiationpt_BR
dc.subject.wosElectron-microscopypt_BR
dc.subject.wosHuman Teethpt_BR
dc.subject.wosDemineralizationpt_BR
dc.subject.wosRadiotherapypt_BR
dc.subject.wosMechanismspt_BR
dc.subject.wosRadicalspt_BR
dc.subject.wosStrengthpt_BR
dc.subject.wosSalivarypt_BR
dc.description.abstractThis study evaluated the effect of gamma radiation on the microtensile bond strength of resin-based composite restoration to human enamel and dentin performed either before or after radiotherapy. Thirty sound human third molars were sectioned mesio-distally into buccal and lingual halves and then randomly divided into enamel or dentin groups. Enamel and dentin substrates were randomly divided into three sub-groups (n = 10): Control, which received no irradiation; specimens were irradiated before restoration protocol; and specimens were irradiated after restoration protocol. Radiation therapy was defined by application of 60-Gy dose fractionally with daily exposures of 2 Gy, 5 days a week, over 6 weeks. Restorations were carried out using Adper Single Bond adhesive system and Filtek Z250 resin composite. The specimens were sectioned producing 4 sticks per specimen and submitted to microtensile on a testing machine. Data were submitted to two-way ANOVA followed by Tukey test (p < 0.05). Failure modes were examined under optical microscopy and SEM. Bond strength to enamel was significantly higher than to dentin irrespective radiation therapy. Radiotherapy applied before restoration significantly reduced the bond strength to both substrates. A predominance of adhesive failures was detected for control groups and groups restored before radiotherapy. Cohesive failures in dentin and enamel increased when the specimens were restored after irradiation. The gamma radiation had a significant detrimental effect on bond strength to human enamel and dentin when the adhesive restorative procedure was carried out after radiotherapy.pt
dc.relation.ispartofSupportive Care In Cancerpt_BR
dc.relation.ispartofabbreviationSupport. Care Cancerpt_BR
dc.publisher.cityNew Yorkpt_BR
dc.publisher.countryEUApt_BR
dc.publisherSpringerpt_BR
dc.date.issued2012pt_BR
dc.date.monthofcirculationNOVpt_BR
dc.identifier.citationSupportive Care In Cancer. Springer, v. 20, n. 11, n. 2873, n. 2878, 2012.pt_BR
dc.language.isoenpt_BR
dc.description.volume20pt_BR
dc.description.issuenumber11pt_BR
dc.description.firstpage2873pt_BR
dc.description.lastpage2878pt_BR
dc.rightsfechadopt_BR
dc.rights.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0pt_BR
dc.sourceWeb of Sciencept_BR
unicamp.cruespUSPpt_BR
dc.identifier.issn0941-4355pt_BR
dc.identifier.wosidWOS:000309342800028pt_BR
dc.identifier.doi10.1007/s00520-012-1414-ypt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)pt_BR
dc.date.available2014-07-30T17:05:37Z
dc.date.available2015-11-26T18:05:50Z-
dc.date.accessioned2014-07-30T17:05:37Z
dc.date.accessioned2015-11-26T18:05:50Z-
dc.description.provenanceMade available in DSpace on 2014-07-30T17:05:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2012en
dc.description.provenanceMade available in DSpace on 2015-11-26T18:05:50Z (GMT). No. of bitstreams: 2 WOS000309342800028.pdf: 276602 bytes, checksum: 0247d9b180df8ffa3f0169e8367fdb13 (MD5) WOS000309342800028.pdf.txt: 24954 bytes, checksum: 78842c5560a1d70c519cef3eb7eb88e2 (MD5) Previous issue date: 2012en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/63913
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/63913-
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