Surface degradation of glass ceramics after exposure to acidulated phosphate fluoride

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorClinic for Fixed and Removable Prosthodontics and Dental Materials Science-
Autor(es): dc.creatorCcahuana, Vanessa Zulema S.-
Autor(es): dc.creatorÖzcan, Mutlu-
Autor(es): dc.creatorMesquita, Alfredo Mikail Melo-
Autor(es): dc.creatorNishioka, Renato Sussumo-
Autor(es): dc.creatorKimpara, Estevão Tomomitsu-
Autor(es): dc.creatorBottino, Marco Antonio-
Data de aceite: dc.date.accessioned2025-08-21T17:14:29Z-
Data de disponibilização: dc.date.available2025-08-21T17:14:29Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2010-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1590/S1678-77572010000200010-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/225893-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/225893-
Descrição: dc.descriptionObjective: This study evaluated the surface degradation effect of acidulated phosphate fluoride (APF) gel exposure on the glassy matrix ceramics as a function of time. Material and methods: Disc-shaped ceramic specimens (N = 120, 10/per ceramic material) were prepared in stainless steel molds (inner diameter: 5 mm, height: 2 mm) using 6 dental ceramics: 3 indicated for ceramic-fused-to-metal (Vita Omega 900, Carmen and Vita Titankeramik), 2 for all-ceramic (Vitadur Alpha and Finesse® Low Fusing) and 1 for both types of restorations (IPS d.SIGN). The specimens were wet ground finished, ultrasonically cleaned and auto-glazed. All specimens were subjected to calculation of percentage of mass loss, surface roughness analysis and topographical description by scanning electron microscopy (SEM) before (0 min) and after exposure to 1.23% APF gel for 4 min and 60 min representing short- and long-term etching effect, respectively. The data were analyzed using two-way ANOVA with repeated measures and Tukey's test (α=0.05). Results: Significant effect of the type of the ceramics (p=0.0000, p=0.0031) and exposure time (p=0.0000) was observed in both surface roughness and percentage of mass loss values, respectively. The interaction factor between both parameters was also significant for both parameters (p=0.0904, p=0.0258). Both 4 min (0.44±0.1 - 0.81±0.2 μm) and 60 min (0.66±0.1 - 1.04±0.3 μm) APF gel exposure created significantly more surface roughness for all groups when compared to the control groups (0.33±0.2 - 0.68±0.2 μm) (p<0.05). There were no significant differences in percentage of mass loss between the ceramics at 4 min (p>0.05) but at 60 min exposure, IPS d.SIGN showed the highest percentage of mass loss (0.1151±0.11). The mean surface roughness for Vita Titankeramik (0.84±0.2 μm) and Finesse® Low Fusing (0.74.±0.2 μm) was significantly higher than those of the other ceramics (0.59±0.1 μm - 0.49±0.1 μm) and Vita Titankeramik (p<0.05) regardless of the exposure time. A positive correlation was found between surface roughness and percentage of mass loss for all ceramic materials [(r=0.518 (Vitadur Alpha), r=0.405 (Vita Omega 900), r=0.580 (Carmen), r=0.687 (IPS d.SIGN), r=0.442 (Finesse® Low Fusing), r=0.572 (Vita Titankeramik), Pearson's correlation coefficient)]. The qualitative SEM analysis showed evidence of corrosive attack on all of ceramics at varying degrees. Conclusions: The ceramics indicated for either metal-ceramic or all-ceramic restorations were all vulnerable to surface texture changes and mass loss after short-term and long-term APF gel exposure.-
Descrição: dc.descriptionSão José dos Campos Dental School Department of Dental Materials and Prosthodontics São Paulo State University, São José dos Campos-
Descrição: dc.descriptionUniversity of Zürich Dental Materials Unit Center for Dental and Oral Medicine Clinic for Fixed and Removable Prosthodontics and Dental Materials Science, Zürich-
Descrição: dc.descriptionSão José dos Campos Dental School Department of Dental Materials and Prosthodontics São Paulo State University, São José dos Campos-
Formato: dc.format155-165-
Idioma: dc.languageen-
Relação: dc.relationJournal of Applied Oral Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAcidulated phosphate fluoride-
Palavras-chave: dc.subjectDental ceramics-
Palavras-chave: dc.subjectDental materials-
Palavras-chave: dc.subjectElectron-
Palavras-chave: dc.subjectLoss mass analysis-
Palavras-chave: dc.subjectMicroscopy-
Palavras-chave: dc.subjectScanning-
Palavras-chave: dc.subjectSurface roughness-
Título: dc.titleSurface degradation of glass ceramics after exposure to acidulated phosphate fluoride-
Tipo de arquivo: dc.typelivro digital-
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