Comparison surface characteristics and chemical composition of conventional metallic and Nickel-Free brackets

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dc.contributor.authorShintcovsk, Ricardo Lima
dc.contributor.authorKnop, Luegya Amorim Henriques
dc.contributor.authorGandini Jr, Luiz Gonzaga
dc.contributor.authorMartins, Lidia Parsekian
dc.contributor.authorPires, Aline Segatto
dc.contributor.institutionUniversidade Estadual de São Paulo School of Dentistry at Araraquara Department of Pediatric Clinic
dc.contributor.institutionUniversidade Federal do Rio Grande do Sul (UFRGS)
dc.date.accessioned2015-02-02T12:39:29Z
dc.date.available2015-02-02T12:39:29Z
dc.date.issued2015
dc.description.abstractThis study aims at comparing conventional and nickel-free metal bracket surface characteristics with elemental composition by scanning electron microscopy (SEM), using energy dispersive spectroscopy (EDS). The sample consisted of 40 lower incisor brackets divided into four groups: ABZ = conventional brackets, Kirium Abzil 3M® (n = 10); RL = conventional brackets, Roth Light Morelli® (n = 10); NF = nickel-free brackets, Nickel-Free Morelli® (n = 10); and RM = nickel-free brackets, Roth Max Morelli® (n = 10). Qualitative evaluation of the bracket surface was performed using SEM, whereby surface features were described and compared. The elemental composition was analyzed by EDS. According to surface analysis, groups ABZ and RL showed a homogeneous surface, with better finishing, whereas the surfaces in groups NF and RM were rougher. The chemical components with the highest percentage were Fe, Cr and C. Groups NF and MR showed no nickel in their composition. In conclusion, the bracket surface of the ABZ and RL groups was more homogeneous, with grooves and pores, whereas the surfaces in groups NF and RM showed numerous flaws, cracks, pores and grooves. The chemical composition analysis confirmed that the nickel-free brackets had no Ni in their composition, as confirmed by the manufacturer’s specifications, and were therefore safe to use in patients with a medical history of allergy to this metal.en
dc.description.affiliationUniversidade Estadual de São Paulo School of Dentistry at Araraquara Department of Pediatric Clinic
dc.description.affiliationUniversidade Federal do Rio Grande do Sul School of Dentistry Department of Dental Materials
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent01-08
dc.identifierhttp://dx.doi.org/10.1590/1807-3107BOR-2015.vol29.0022
dc.identifier.citationBrazilian Oral Research. Sociedade Brasileira de Pesquisa Odontológica - SBPqO, v. 29, n. 1, p. 01-08, 2015.
dc.identifier.doi10.1590/1807-3107BOR-2015.vol29.0022
dc.identifier.fileS1806-83242015000100218.pdf
dc.identifier.issn1806-8324
dc.identifier.lattes8223795731605246
dc.identifier.scieloS1806-83242015000100218
dc.identifier.urihttp://hdl.handle.net/11449/114385
dc.language.isoeng
dc.publisherSociedade Brasileira de Pesquisa Odontológica - SBPqO
dc.relation.ispartofBrazilian Oral Research
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectOrthodontic Bracketsen
dc.subjectNickelen
dc.subjectHypersensitivityen
dc.subjectMicroscopyen
dc.titleComparison surface characteristics and chemical composition of conventional metallic and Nickel-Free bracketsen
dc.typeArtigo
unesp.author.lattes8223795731605246
unesp.author.orcid0000-0002-9678-0798[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt

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Artigos - Clínica Infantil - FOAR