Effect of Nd:YAG Laser Bleaching and Antioxidizing Agents on the Shear Bond Strength of Brackets

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dc.contributor.authorAkin, Mehmet
dc.contributor.authorOzyilmaz, Ozgun Yusuf
dc.contributor.authorYavuz, Tevfik
dc.contributor.authorAykent, Filiz
dc.contributor.authorBasciftci, Faruk Ayhan
dc.date.accessioned2020-03-26T18:41:36Z
dc.date.available2020-03-26T18:41:36Z
dc.date.issued2013
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractObjective:The aims of this study were to evaluate the effect of hydrogen peroxide bleaching agents, both nonactivated and activated by a neodymium:yttrium-aluminum-garnet (Nd:YAG) laser, and of antioxidant treatment on the shear bond strength (SBS) of orthodontic brackets. Background data:Nd:YAG laser activation is expected to accelerate the bleaching therapy without decrease shear bond strength. Materials and methods: Ninety extracted maxillary central incisors were divided into two experimental groups and a control group. Group I was the control group, Group II was bleached with 35% hydrogen peroxide and had no photoactivation, and Group III was bleached with 35% hydrogen peroxide with activation by a Nd:YAG laser (4.0 W, 60 Hz frequency, 1mm distance, 20 sec). Each group was divided into two subgroups:Subgroup A was immersed in artificial saliva for 2 weeks, and then bonded using the total etch system, whereas subgroup B was treated with an antioxidant agent (10% sodium ascorbate) and then bonded using the same system. The samples were stored in water for 24 h at 37 degrees C, and thermocycled. The SBS in megapascals (MPa) was determined by a shear test with 1mm/min crosshead speed, and failure types were classified with modified adhesive remnant index scores. The data were analyzed with two way analyses of variance, Tukey, and chi(2) tests at the alpha = 0.05 level. Results:In both Groups II and III, the SBSs of brackets bonded after bleaching (Group II 15.16, Group III 17.50 MPa) were significantly lower than those of brackets in the bonded unbleached group (Group I 22.13MPa); however, sodium ascorbate treatment significantly increased the SBSs of brackets in the bleached groups (Group II 21.52, Group III 22.43MPa), but had an insignificant effect on the SBS of the control group (Group I 23.66MPa). Conclusions: Hydrogen peroxide bleaching agents reduce the SBSs both with and without Nd:YAG laser activation; however, treatment of the bleached enamel surface with 10% sodium ascorbate prior to bonding negates the effect.en_US
dc.identifier.doi10.1089/pho.2012.3467en_US
dc.identifier.endpage370en_US
dc.identifier.issn1549-5418en_US
dc.identifier.issue8en_US
dc.identifier.pmid23859749en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage365en_US
dc.identifier.urihttps://dx.doi.org/10.1089/pho.2012.3467
dc.identifier.urihttps://hdl.handle.net/20.500.12395/29412
dc.identifier.volume31en_US
dc.identifier.wosWOS:000322626200003en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherMARY ANN LIEBERT, INCen_US
dc.relation.ispartofPHOTOMEDICINE AND LASER SURGERYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.titleEffect of Nd:YAG Laser Bleaching and Antioxidizing Agents on the Shear Bond Strength of Bracketsen_US
dc.typeArticleen_US

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