Effect of surface treatments with acid solutions on the surface roughness of an yttrium-tetragonal zirconia polycrystal'

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dc.creatorFrederico dos Reis Goyatá
dc.creatorYvna Fernandes de Souza Galvão
dc.creatorThamyryz Rafaela Simões
dc.creatorLuís Felipe Goyatá
dc.creatorJosé Alcides Arruda
dc.creatorAmália Moreno
dc.date.accessioned2023-07-09T15:18:32Z
dc.date.accessioned2025-09-09T01:13:45Z
dc.date.available2023-07-09T15:18:32Z
dc.date.issued2018-04-01
dc.identifier.issn08958831
dc.identifier.urihttps://hdl.handle.net/1843/55974
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofThe Journal of Clinical Dentistry
dc.rightsAcesso Aberto
dc.subjectHydrofluoric acid
dc.subjectNitric acid
dc.subjectMicroscopy, atomic force
dc.subjectAluminum Oxide
dc.subject.otherZircônia
dc.subject.othersurface modification
dc.subject.otherroughness
dc.titleEffect of surface treatments with acid solutions on the surface roughness of an yttrium-tetragonal zirconia polycrystal'
dc.typeArtigo de periódico
local.citation.epage370
local.citation.issue03
local.citation.spage367
local.citation.volume10
local.description.resumoBackground: The purpose of this in vitro study was to evaluate the effect of conventional surface treatment with acid solutions on the surface roughness of a zirconia-based ceramic. Material and methods: Specimens of yttrium-tetragonal zirconia polycrystal (Y-TZP) -based ceramic were fabricated (5.0 x 5.0 x 2.0 mm, n=40). The specimens were submitted to the tested surface treatment method and divided into 4 groups (n=10): no treatment-control (GI), airborne 110 µm aluminum oxide particle abrasion for 1 minute-conventional method (GII); etching with 48% hydrofluoric acid for 2 minutes (GIII), and nitric acid/hydrofluoric acid etching for 2 minutes (GIV). The surface roughness (Ra) test was performed, followed by AFM analysis. The results were analyzed by ANOVA and the Tukey test, with the level of significance set at a=.05. Results: The surface treatment with acid solutions (0.16 ± 0.02-GIII; 0.11 ± 0.01-GIV) promoted a significant increase in roughness, with higher mean Ra values of Y-TZP (μm) compared to control (0.06 ± 0.01-GI) (p >.05), and lower values compared to the conventional method (0.21 ± 0.06-GII). The aluminum oxide particle treatment resulted in deep microretentions forming sharp Y-TZP peaks compared to only microretentions with acid solution treatments. Conclusions: All Y-TZP treatments effectively promoted microretention in the ceramic. Hydrofluoric acid (48%) proved to be more effective in increasing the Ra of Y-TZP than the nitric acid/hydrofluoric acid treatment. Atomic force microscopy images revealed that both acid solutions modified the surface of the Y-TZP in a uniform manner
local.publisher.countryBrasil
local.publisher.departmentFAO - DEPARTAMENTO DE CLÍNICA
local.publisher.initialsUFMG
local.url.externahttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5937956/

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