Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prostheses
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1806-83242009000200009 http://hdl.handle.net/11449/71473 |
Resumo: | One 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. |
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Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prosthesesMaxillofacial prosthesisPigmentationSilicone elastomerscoloring agentsilasticanalysis of variancechemistrycolormaterials testingmaxillofacial prosthesispigmentationprosthesisradiation exposurespectrophotometrytemperaturetimeAnalysis of VarianceColorColoring AgentsMaterials TestingMaxillofacial ProsthesisProsthesis ColoringSilicone ElastomersSpectrophotometryTemperatureTime FactorsOne 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.Department of Dental Materials and Prosthodontics School of Dentistry of Araçatuba São Paulo State University, Araçatuba, SPDepartment of Dental Materials and Prosthodontics School of Dentistry of Araçatuba São Paulo State University, Araçatuba, SPUniversidade Estadual Paulista (Unesp)Mancuso, Daniela Nardi [UNESP]Goiato, Marcelo Coelho [UNESP]Santos, Daniela Micheline dos [UNESP]2014-05-27T11:24:34Z2014-05-27T11:24:34Z2009-12-08info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article144-148application/pdfhttp://dx.doi.org/10.1590/S1806-83242009000200009Brazilian Oral Research, v. 23, n. 2, p. 144-148, 2009.1806-83241807-3107http://hdl.handle.net/11449/7147310.1590/S1806-83242009000200009S1806-832420090002000092-s2.0-710491749782-s2.0-71049174978.pdf97198838148725820000-0002-3800-3050Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Oral Research1.223info:eu-repo/semantics/openAccess2023-11-15T06:18:17Zoai:repositorio.unesp.br:11449/71473Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:47:40.855512Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prostheses |
title |
Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prostheses |
spellingShingle |
Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prostheses Mancuso, Daniela Nardi [UNESP] Maxillofacial prosthesis Pigmentation Silicone elastomers coloring agent silastic analysis of variance chemistry color materials testing maxillofacial prosthesis pigmentation prosthesis radiation exposure spectrophotometry temperature time Analysis of Variance Color Coloring Agents Materials Testing Maxillofacial Prosthesis Prosthesis Coloring Silicone Elastomers Spectrophotometry Temperature Time Factors |
title_short |
Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prostheses |
title_full |
Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prostheses |
title_fullStr |
Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prostheses |
title_full_unstemmed |
Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prostheses |
title_sort |
Color stability after accelerated aging of two silicones, pigmented or not, for use in facial prostheses |
author |
Mancuso, Daniela Nardi [UNESP] |
author_facet |
Mancuso, Daniela Nardi [UNESP] Goiato, Marcelo Coelho [UNESP] Santos, Daniela Micheline dos [UNESP] |
author_role |
author |
author2 |
Goiato, Marcelo Coelho [UNESP] Santos, Daniela Micheline dos [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Mancuso, Daniela Nardi [UNESP] Goiato, Marcelo Coelho [UNESP] Santos, Daniela Micheline dos [UNESP] |
dc.subject.por.fl_str_mv |
Maxillofacial prosthesis Pigmentation Silicone elastomers coloring agent silastic analysis of variance chemistry color materials testing maxillofacial prosthesis pigmentation prosthesis radiation exposure spectrophotometry temperature time Analysis of Variance Color Coloring Agents Materials Testing Maxillofacial Prosthesis Prosthesis Coloring Silicone Elastomers Spectrophotometry Temperature Time Factors |
topic |
Maxillofacial prosthesis Pigmentation Silicone elastomers coloring agent silastic analysis of variance chemistry color materials testing maxillofacial prosthesis pigmentation prosthesis radiation exposure spectrophotometry temperature time Analysis of Variance Color Coloring Agents Materials Testing Maxillofacial Prosthesis Prosthesis Coloring Silicone Elastomers Spectrophotometry Temperature Time Factors |
description |
One 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. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-12-08 2014-05-27T11:24:34Z 2014-05-27T11:24:34Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1806-83242009000200009 Brazilian Oral Research, v. 23, n. 2, p. 144-148, 2009. 1806-8324 1807-3107 http://hdl.handle.net/11449/71473 10.1590/S1806-83242009000200009 S1806-83242009000200009 2-s2.0-71049174978 2-s2.0-71049174978.pdf 9719883814872582 0000-0002-3800-3050 |
url |
http://dx.doi.org/10.1590/S1806-83242009000200009 http://hdl.handle.net/11449/71473 |
identifier_str_mv |
Brazilian Oral Research, v. 23, n. 2, p. 144-148, 2009. 1806-8324 1807-3107 10.1590/S1806-83242009000200009 S1806-83242009000200009 2-s2.0-71049174978 2-s2.0-71049174978.pdf 9719883814872582 0000-0002-3800-3050 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Brazilian Oral Research 1.223 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
144-148 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128859266088960 |