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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleComparison between the Effect of Plasma and Chemical Treatments on Fiber Post Surfacept_BR
dc.contributor.authorDantas, MCCpt_BR
dc.contributor.authordo Prado, Mpt_BR
dc.contributor.authorCosta, VSpt_BR
dc.contributor.authorGaiotte, MGpt_BR
dc.contributor.authorSimao, RApt_BR
dc.contributor.authorBastian, FLpt_BR
unicamp.authordo Prado, Maira Univ Estadual Campinas, Piracicaba Dent Sch, Dept Restorat Dent, Endodont Div,UNICAMP, BR-13414018 Piracicaba, SP, Brazilpt_BR
unicamp.authorCosta Dantas, Marta Clea Costa, Vinicius Silva Gaiotte, Mauro G. Simao, Renata A. Bastian, Fernando Luis Univ Fed Rio de Janeiro, Dept Met & Mat Engn, Rio De Janeiro, Brazilpt_BR
dc.subjectArgon plasmapt_BR
dc.subjectethylenediamine plasmapt_BR
dc.subjectfiber postpt_BR
dc.subjecthydrofluoric acidpt_BR
dc.subject.wosMicrotensile Bond Strengthpt_BR
dc.subject.wosComposite Resin Corespt_BR
dc.subject.wosFlexural Propertiespt_BR
dc.subject.wosAcrylic Resinpt_BR
dc.description.abstractIntroduction: The aim of the present study was to evaluate the fiber post surface after plasma and usual treatments and the adhesion between treated fiber posts and Rely X Unicem resin cement (3M ESPE, St Paul, MN). Methods: Flat fiber posts were divided into 6 groups according to surface treatment: silane, hydrofluoric acid, hydrofluoric acid plus silane, plasma polymerization with argon, ethylenediamine plasma (EDA), and the control group. A goniometer was used to measure the contact angle between the groups with water or resin cement. Scanning electron microscopy and electron dispersive spectroscopy were used to examine the topography and chemical changes in the post surfaces after treatment. Push-out tests were performed using a universal testing machine to evaluate the adhesion strength between treated fiber posts and resin cement. Results: In the contact angle with water, the most hydrophilic surface was observed in samples treated with argon plasma, followed by treatments with silane and hydrofluoric acid plus silane. The hydrophobic characteristic was observed with EDA and hydrofluoric acid. The contact angle with dual resin cement showed lower values with argon and EDA, followed by silane and hydrofluoric acid plus silane. Electron dispersive spectroscopy analyses showed chemical modifications in the surface after different treatments although topographic changes were verified only with EDA plasma compared with the control. Push-out results did not show differences between groups compared with the control, except for EDA plasma treatment. Conclusions: Plasma treatment favored the wettability of the post surface by modifying it chemically. Adhesion improvement was only observed after EDA treatment. (J Endod 2012;38:215-218)pt
dc.relation.ispartofJournal Of Endodonticspt_BR
dc.relation.ispartofabbreviationJ. Endod.pt_BR
dc.publisher.cityNew Yorkpt_BR
dc.publisherElsevier Science Incpt_BR
dc.identifier.citationJournal Of Endodontics. Elsevier Science Inc, v. 38, n. 2, n. 215, n. 218, 2012.pt_BR
dc.sourceWeb of Sciencept_BR
dc.description.provenanceMade available in DSpace on 2014-07-30T14:00:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2012en
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