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dc.contributor.authorCastro, Fabricio L. A.-
dc.contributor.authorAndrade, Marcelo F.-
dc.contributor.authorHebling, Josimeri-
dc.contributor.authorLizarelli, Rosane F. Z.-
dc.identifier.citationJournal of Adhesive Dentistry. Hanover Park: Quintessence Publishing Co Inc, v. 14, n. 2, p. 137-145, 2012.-
dc.description.abstractPurpose: To evaluate whether Nd:YAG laser irradiation of etched and unetched dentin through an uncured adhesive affected the microtensile bond strength (pTBS).Materials and Methods: Flat dentin surfaces were created in 19 extracted human third molars. Adper Single Bond (SB) adhesive was applied over etched (groups 1 to 3) or unetched dentin (groups 4 to 6). The dentin was then irradiated with a Nd:YAG laser through the uncured adhesive, using 0.75 or 1 W power settings, except for the control groups (groups 1 and 4). The adhesive was light cured and composite crowns were built up. After 24 h, the teeth were sectioned into beams, with cross-sectional areas of 0.49 mm(2), and were stressed under tension. Data were statistically analyzed using two-way ANOVA and Tukey's test (alpha = 5%). Dentin surfaces of fractured specimens and the interfaces of untested beams were observed under scanning electron microscopy (SEM).Results: Acid etching, laser irradiation, and their interaction significantly affected bonding (p < 0.05). Laser irradiation did not improve bonding of etched dentin to resin (p > 0.05). However, higher pTBS means were found on unetched lased dentin (groups 5 and 6), but only in comparison to group 4, where neither lasing nor etching was performed. Groups 4 to 6 showed the lowest pTBS means among all groups tested (p < 0.05). Laser irradiation did not change the characteristics of the hybrid layers created, while solidification globules were observed on lased dentin surfaces under SEM.Conclusion: Laser irradiation of dentin through the uncured adhesive did not significantly improve the pTBS in comparison to the suggested manufacturer's technique.en
dc.publisherQuintessence Publishing Co Inc-
dc.sourceWeb of Science-
dc.subjectdentin adhesivesen
dc.subjecttensile bond strengthen
dc.titleNd:YAG Laser Irradiation of Etched/Unetched Dentin Through an Uncured Two-step Etch-and-Rinse Adhesive and its Effect on Microtensile Bond Strengthen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.description.affiliationUNIP, Sch Dent, Hlth Sci Inst, Goiania, Go, Brazil-
dc.description.affiliationUniv Estadual Paulista, Dept Restorat Dent, São Paulo, Brazil-
dc.description.affiliationUniv Estadual Paulista, Dept Orthodont & Pediat Dent, São Paulo, Brazil-
dc.description.affiliationUniv São Paulo, Inst Phys, São Paulo, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Dept Restorat Dent, São Paulo, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Dept Orthodont & Pediat Dent, São Paulo, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Adhesive Dentistry-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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