Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prostheses

Página do item simplificado
dc.contributor.authorMancuso, Daniela Nardi [UNESP]
dc.contributor.authorGoiato, Marcelo Coelho [UNESP]
dc.contributor.authorSantos, Daniela Micheline dos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:24:34Z
dc.date.available2014-05-27T11:24:34Z
dc.date.issued2009-12-08
dc.description.abstractOne of the greatest challenges faced by buccomaxillofacial prosthetists is to reproduce the patient's exact skin color and provide adequate esthetics. To reach this objective, professionals must use materials with easy characterization and that maintain color over long periods of time. The objective of this study was, thus, to evaluate the color stability of two types of silicones, Silastic 732 and Silastic MDX4-4210. Twenty-four test specimens were made from each type of silicone and were divided into a colorless group and groups intrinsically pigmented with ceramics, cosmetics or iron oxide. The specimens were submitted to an accelerated system of aging for non-metallic materials. Readings were carried out initially and after periods corresponding to 163, 351, 692 and 1,000 hours of aging, using a reflection spectrophotometer analysis, and color alterations were calculated by the CIE L*a*b* system. The data were submitted to variance analysis and Tukey's test at a 5% level of probability. The results demonstrated that, irrespective of the period of time analyzed, all the materials underwent some type of chromatic alteration (ΔE > 0). The test specimens made with Silastic 732 and MDX4-4210, without pigmentation, presented the lowest color alteration values after 1,000 hours of aging. Of the pigments, ceramic presented the lowest color alteration values and cosmetic powder presented the highest values. Thus, it may be concluded that the materials without the incorporation of pigments presented similar color alteration values, and did not differ statistically. The cosmetic powder used in this study was the pigment that most altered the color of the test specimens. © 2009 Sociedade Brasileira de Pesquisa Odontológica.en
dc.description.affiliationDepartment of Dental Materials and Prosthodontics School of Dentistry of Araçatuba São Paulo State University, Araçatuba, SP
dc.description.affiliationUnespDepartment of Dental Materials and Prosthodontics School of Dentistry of Araçatuba São Paulo State University, Araçatuba, SP
dc.format.extent144-148
dc.identifierhttp://dx.doi.org/10.1590/S1806-83242009000200009
dc.identifier.citationBrazilian Oral Research, v. 23, n. 2, p. 144-148, 2009.
dc.identifier.doi10.1590/S1806-83242009000200009
dc.identifier.file2-s2.0-71049174978.pdf
dc.identifier.issn1806-8324
dc.identifier.issn1807-3107
dc.identifier.lattes9719883814872582
dc.identifier.orcid0000-0002-3800-3050
dc.identifier.scieloS1806-83242009000200009
dc.identifier.scopus2-s2.0-71049174978
dc.identifier.urihttp://hdl.handle.net/11449/71473
dc.language.isoeng
dc.relation.ispartofBrazilian Oral Research
dc.relation.ispartofjcr1.223
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectMaxillofacial prosthesis
dc.subjectPigmentation
dc.subjectSilicone elastomers
dc.subjectcoloring agent
dc.subjectsilastic
dc.subjectanalysis of variance
dc.subjectchemistry
dc.subjectcolor
dc.subjectmaterials testing
dc.subjectmaxillofacial prosthesis
dc.subjectpigmentation
dc.subjectprosthesis
dc.subjectradiation exposure
dc.subjectspectrophotometry
dc.subjecttemperature
dc.subjecttime
dc.subjectAnalysis of Variance
dc.subjectColor
dc.subjectColoring Agents
dc.subjectMaterials Testing
dc.subjectMaxillofacial Prosthesis
dc.subjectProsthesis Coloring
dc.subjectSilicone Elastomers
dc.subjectSpectrophotometry
dc.subjectTemperature
dc.subjectTime Factors
dc.titleColor stability after accelerated aging of two silicones, pigmented or not, for use in facial prosthesesen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/bor/iaboutj.htm
unesp.author.lattes9719883814872582
unesp.author.orcid0000-0002-3800-3050[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araçatubapt

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
2-s2.0-71049174978.pdf
Tamanho:
1.36 MB
Formato:
Adobe Portable Document Format
Baixar

Coleções

Artigos - Materiais Odontológicos e Prótese - FOA