Effect of non-vital tooth bleaching on microleakage of coronal access restorations

dc.creatorTeixeira, ECN
dc.creatorHara, AT
dc.creatorTurssi, CP
dc.creatorSerra, MC
dc.date2003
dc.dateNOV
dc.date2014-11-17T17:58:10Z
dc.date2015-11-26T16:45:27Z
dc.date2014-11-17T17:58:10Z
dc.date2015-11-26T16:45:27Z
dc.date.accessioned2018-03-28T23:31:01Z
dc.date.available2018-03-28T23:31:01Z
dc.identifierJournal Of Oral Rehabilitation. Blackwell Publishing Ltd, v. 30, n. 11, n. 1123, n. 1127, 2003.
dc.identifier0305-182X
dc.identifierWOS:000186076000012
dc.identifier10.1046/j.1365-2842.2003.01161.x
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/64370
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/64370
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/64370
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1274216
dc.descriptionThis study evaluated the effect of non-vital tooth bleaching on microleakage of composite resin/bovine tooth interface at different post-bleaching times. A total of 320 teeth were cleaned. A pulp chamber access cavity was made at the lingual surface of each tooth. The teeth were randomly divided into four groups: SPH - sodium perborate + 30% hydrogen peroxide; SPW - sodium perborate + distilled water; CP-37% carbamide peroxide; and CON-distilled water (control). The bleaching agents were replaced every 7 days, over 4 weeks. Following bleaching procedures, the groups were divided into four subgroups (n = 20), according to the post-bleaching times: 0 (baseline), 7, 14 and 21 days. After that, the cavities were restored with an adhesive system (Single Bond; 3M Co., St Paul, MN, USA) and a composite resin (Z100/3M). The specimens were thermocycled, stained with 2% methylene blue solution (pH 7), and sectioned longitudinally. The teeth were evaluated blind and independently by three previously calibrated examiners, to provide representative scores. The data were submitted to Kruskal-Wallis and multiple comparison tests (alpha=0.05). At baseline and 7 days, the SPH group showed a higher degree of dye penetration than the CON (P=0.04). At 14 and 21 days, there were no differences among groups. The association of sodium perborate with 30% hydrogen peroxide or with water may affect the sealing ability of composite resin restorations performed up to 7 days after bleaching procedures.
dc.description30
dc.description11
dc.description1123
dc.description1127
dc.languageen
dc.publisherBlackwell Publishing Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationJournal Of Oral Rehabilitation
dc.relationJ. Oral Rehabil.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectnon-vital bleaching
dc.subjectmicroleakage
dc.subjectbleaching agents
dc.subjectUnbleached Bovine Enamel
dc.subjectComposite Resin
dc.subjectAdhesion
dc.subjectDentin
dc.subjectTeeth
dc.titleEffect of non-vital tooth bleaching on microleakage of coronal access restorations
dc.typeArtículos de revistas


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