Marginal leakage in Class V cavities pretreated with different laser energy densities

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dc.contributor.authorRibeiro, C. F.
dc.contributor.authorAnido, A. A.
dc.contributor.authorRauscher, F. C.
dc.contributor.authorYui, KCK
dc.contributor.authorGoncalves, SED
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:05:13Z
dc.date.available2014-05-20T14:05:13Z
dc.date.issued2005-06-01
dc.description.abstractThe purpose of the present study was to evaluate in vitro the degree of marginal leakage in Class V cavities involving the cementoenamel junction. Cavities were 4 rum wide and 2 mm deep. The specimens received dentin pretreatment (37% phosphoric acid) followed by the Single Bond (3M) adhesive system application. The 40 specimens were then divided into four groups: Group I (control); Group 2 (Nd:YAG laser at 120 mJ/pulse, frequency of 10 Hz, power of 1.2 W); Group 3 (Nd:YAG laser at 140 mJ/pulse, frequency of 10 Hz, power of 1.4 W); Group 4 (Nd:YAG laser at 160 mJ/pulse, frequency of 10 Hz, power of 1.6 W). The cavities were restored with Z100 composite resin (3M) and light cured at 300-600 mW/cm(2) light intensity. Specimens were thermocycled to 500 cycles from 2-50 degrees C. After that, they were dried and sealed with nail varnish, respecting 1 mm around the restorations, and immersed in 0.5% methylene blue solution for 4 h. After this period, the teeth were rinsed, dried, sectioned, and analyzed in a stereoscopic loupe. The highest leakage scores were considered for each specimen. The results were statistically analyzed by the analysis of variance (ANOVA) Kruskal-Wallis test to the 5% level. For both the enamel and cementum, there was a decrease in marginal leakage with the application of laser energy; no significant differences were observed for Groups 2, 3, and 4. The results also showed a smaller tendency to marginal leakage on the cementum than on the enamel.en
dc.description.affiliationUNESP, Sch Dent, Dept Restorat Dent, Sao Jose Dos Campos, Brazil
dc.description.affiliationUnespUNESP, Sch Dent, Dept Restorat Dent, Sao Jose Dos Campos, Brazil
dc.format.extent313-316
dc.identifierhttp://dx.doi.org/10.1089/pho.2005.23.313
dc.identifier.citationPhotomedicine and Laser Surgery. New Rochelle: Mary Ann Liebert Inc., v. 23, n. 3, p. 313-316, 2005.
dc.identifier.doi10.1089/pho.2005.23.313
dc.identifier.fileWOS000230048300013.pdf
dc.identifier.issn1549-5418
dc.identifier.urihttp://hdl.handle.net/11449/22887
dc.identifier.wosWOS:000230048300013
dc.language.isoeng
dc.publisherMary Ann Liebert, Inc.
dc.relation.ispartofPhotomedicine and Laser Surgery
dc.relation.ispartofjcr1.620
dc.relation.ispartofsjr0,443
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleMarginal leakage in Class V cavities pretreated with different laser energy densitiesen
dc.typeArtigo
dcterms.licensehttp://www.liebertpub.com/nv/resources-tools/self-archiving-policy/51/
dcterms.rightsHolderMary Ann Liebert Inc.
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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Artigos - Odontologia Restauradora - ICT