Effect of intrinsic nanoparticle pigmentation on the color stability of denture base acrylic resins

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.creatorGoiato, Marcelo Coelho-
Autor(es): dc.creatorZuccolotti, Bruna Carolina Rossatti-
Autor(es): dc.creatordos Santos, Daniela Micheline-
Autor(es): dc.creatorSinhoreti, Mário Alexandre Coelho-
Autor(es): dc.creatorMoreno, Amália-
Data de aceite: dc.date.accessioned2025-08-21T17:38:52Z-
Data de disponibilização: dc.date.available2025-08-21T17:38:52Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2013-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/S0022-3913(13)60387-X-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/231360-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/231360-
Descrição: dc.descriptionStatement of problem: Intrinsic pigmentation is widely used to improve the esthetic features of denture base acrylic resins. However, acrylic resin may discolor over time. Purpose: The purpose of this study was to investigate the effect of intrinsic nanoparticle pigmentation on the color stability of acrylic resins. Material and methods: The acrylic resins, Onda Cryl, QC 20, Classico, and Lucitone, were evaluated. Twenty-one disk-shaped specimens (3 × 30 mm) were fabricated from each acrylic resin. Seven were colored with 3% Poli-Cor intrinsic pigment used to color denture base, 7 were colored with 7% pigment, and 7 were not pigmented. In addition, 7 specimens were fabricated containing only pigment. The specimens were thermally cycled 2000 times between 5°C and 55°C with a 30-second dwell time at each temperature. The specimen colors were measured with a spectrophotometer and evaluated with the CIE L*a*b* system before (B) and after thermal cycling (T). The pigment morphology was analyzed by using a scanning electron microscope (SEM) and energy-dispersive x-ray spectroscopy (EDS) techniques. The results were analyzed with 2-way nested ANOVA and Tukey HSD tests (α=.05). Results: Classico acrylic resin with and without pigment underwent the least color change, followed in order by Lucitone, Onda Cryl, and QC-20. The presence of pigments reduced the color change of the acrylic resins significantly (P<.05) for the specimens containing 7% pigment (0.32 ±0.18 ΔE). Titanium was the sole metallic component present in the pigment, probably in the oxide form (TiO2). Conclusions: Nanoparticle pigments enhanced the color stability of denture base acrylic resins.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionAssociate Professor Department of Dental Materials and Prosthodontics, State University of São Paulo-UNESP, Faculty of Dentistry of Araçatuba-
Descrição: dc.descriptionGraduate student Department of Dental Materials and Prosthodontics, State University of São Paulo-UNESP, Faculty of Dentistry of Araçatuba-
Descrição: dc.descriptionAssociate Professor Piracicaba Dental School, State University of Campinas-
Descrição: dc.descriptionFAPESP: 2009/15170-3-
Formato: dc.format101-106-
Idioma: dc.languageen-
Relação: dc.relationJournal of Prosthetic Dentistry-
???dc.source???: dc.sourceScopus-
Título: dc.titleEffect of intrinsic nanoparticle pigmentation on the color stability of denture base acrylic resins-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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