Influence of the background, substrate and thickness in light behaviour and colour of zirconia-reinforced lithium silicate (ZLS) glass-ceramic

Página do item simplificado
dc.contributor.authorDos Santos, Ana Rita Canhão Rebelo
dc.contributor.authorRiquieri, Hilton [UNESP]
dc.contributor.authorSaavedra, Guilherme de Siqueira Ferreira Anzaloni [UNESP]
dc.contributor.authorViegas, Diogo Miguel da Costa Cabecinha Pacheco
dc.contributor.authorPalmela, Adriana Sofia Neto da Silva
dc.contributor.authorHermínio, Joana Raquel Lima
dc.contributor.authorRoque, João Carlos da Silva
dc.contributor.institutionSchool of Dental Medicine
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionDental Technology Program
dc.contributor.institutionIntegrated Master in Dental Medicine
dc.contributor.institutionDental Technology Department
dc.date.accessioned2022-04-28T19:51:27Z
dc.date.available2022-04-28T19:51:27Z
dc.date.issued2021-10-01
dc.description.abstractObjective: To evaluate the influence of background, substrates and thickness on the color and light behaviour of two ZLS glass ceramics. Material and Methods: Standardized disc-shape specimens (12 x 1.2 mm), color A1 HT, of Celtra Duo and Vita Suprinity (n=30), were tested over a white/black background, and divided in five groups (n=6) to be tested over five substrates (polished gold alloy, white zirconia and composite, dentine and enamel A1 colour). The L*, C*, h*, a*, b* and ΔE values, were recorded in two thicknesses (1.2 and 2.4 mm). Translucency parameter (TP), contrast ratio (CR) and opalescence parameter (OP) were calculated. Data was analysed with non-parametric tests: Mann Whitney between ceramic materials for thickness, Wilcoxon for thicknesses in substrates and ceramic material and Kruskal-Wallis with Bonferroni corrections tests (p<0,01) for substrates. Results: For 2.4 mm, the ΔE values were always higher independently of ceramic material or substrates. Vita Suprinity registered lower values than Celtra Duo. Zirconia substrate registered the lower values. For 1.2 mm, dentine registered the lower values. Gold alloy and composite substrates registered the lower ΔE values for 1.2 mm Celtra Duo and 2.4 mm Vita Suprinity specimens. CT and OP higher values and TP lower values were registered for 2.4 mm Vita Suprinity. It was impossible to calculate for Celtra Duo specimens. Conclusions: Background, substrate and thickness had significant influence in light behaviour and final color of ZLS glass ceramics. Substrates Gold alloy and dentine exhibited clinical acceptable ΔE values for 1.2 mm Celtra Duo specimens.en
dc.description.affiliationLisbon University School of Dental Medicine
dc.description.affiliationSão Paulo State University Institute of Science and Technology Department of Dental Materials and Prosthodontics, SP
dc.description.affiliationLisbon University School of Dental Medicine Department of Fixed Prosthodontics and Oral Rehabilitation
dc.description.affiliationLisbon University School of Dental Medicine Dental Technology Program
dc.description.affiliationLisbon University School of Dental Medicine Integrated Master in Dental Medicine
dc.description.affiliationLisbon University School of Dental Medicine Dental Technology Department
dc.description.affiliationUnespSão Paulo State University Institute of Science and Technology Department of Dental Materials and Prosthodontics, SP
dc.identifierhttp://dx.doi.org/10.4322/BDS.2021.E2929
dc.identifier.citationBrazilian Dental Science, v. 24, n. 4, 2021.
dc.identifier.doi10.4322/BDS.2021.E2929
dc.identifier.issn2178-6011
dc.identifier.scopus2-s2.0-85125773285
dc.identifier.urihttp://hdl.handle.net/11449/223569
dc.language.isoeng
dc.relation.ispartofBrazilian Dental Science
dc.sourceScopus
dc.subjectCeramic
dc.subjectColor
dc.subjectDental Materials
dc.subjectLithium Disilicate
dc.subjectZirconia
dc.titleInfluence of the background, substrate and thickness in light behaviour and colour of zirconia-reinforced lithium silicate (ZLS) glass-ceramicen
dc.titleInfluência do fundo, substrato e espessura no comportamento da luz e cor das cerâmicas de dissilicato de lítio reforçadas com zircónia (ZLS)pt
dc.typeArtigo

Arquivos

Coleções

Artigos