Surface roughness and volumetric contraction of a Y-TZP ceramic sintered by microwave energy and by resistive heating

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dc.contributor.authorBARCHETTA, NAYARA
dc.contributor.authorNANNI, LARISSA
dc.contributor.authorMIRANDA, JEAN
dc.contributor.authorLAZAR, DOLORES
dc.contributor.authorASSUI, VALTER
dc.contributor.authorSAAVEDRA, GUILHERME
dc.coverageInternacionalpt_BR
dc.date.accessioned2018-02-22T14:13:31Z
dc.date.available2018-02-22T14:13:31Z
dc.date.issued2017pt_BR
dc.description.abstractObjectives: The aim of this study was to evaluate a Y-TZP ceramic sintered by a microwave protocol on volume shrinkage and surface roughness. Material and Methods: Twenty four (N=24) Y-TZP discs were fabricated by milling in CAD/ CAM for size standardization. The mean final dimensions of the specimens were 15 mm X 1.6 mm. Samples were divided into 2 groups (n=12): conventional resistive heating sintering protocol (C - Control) and microwave sintering protocol (MO - experimental). For the characterization of the specimens, surface roughness (Ra and Rz parameters) was evaluated with a roughness tester, and volume shrinkage was measured with a hand micrometer. Data were statistically evaluated by Student’s t and Mann-Whitney U tests (α=0.05). Results: The roughness results were: 0.25 μm ± 0.02 (Ra) and 2.68 μm ± 0.666 (Rz) for the MO samples; 0.26 μm ± 0.04 (Ra) and 2.73 μm ± 0.461 (Rz) for the C group (Ra: p = 0.19; Rz: p = 0.81). The shrinkage results was: MO (21.02% ± 2.70) and C (20.10% ± 0.52) (p = 0.274). Conclusion: The conventional and microwave sintering methods were similar regarding surface roughness and volume shrinkage of Y-TZP dental ceramic.pt_BR
dc.format.extent124-129pt_BR
dc.identifier.citationBARCHETTA, NAYARA; NANNI, LARISSA; MIRANDA, JEAN; LAZAR, DOLORES; ASSUI, VALTER; SAAVEDRA, GUILHERME. Surface roughness and volumetric contraction of a Y-TZP ceramic sintered by microwave energy and by resistive heating. <b>Brazilian Dental Science</b>, v. 20, n. 04, p. 124-129, 2017. DOI: <a href="https://dx.doi.org/10.14295/bds.2017.v20i4.1481">10.14295/bds.2017.v20i4.1481</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/28538.
dc.identifier.doi10.14295/bds.2017.v20i4.1481pt_BR
dc.identifier.fasciculo04pt_BR
dc.identifier.issn2178-6011pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7384-304X
dc.identifier.percentilfiSem Percentilen
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/28538
dc.identifier.vol20pt_BR
dc.relation.ispartofBrazilian Dental Sciencept_BR
dc.rightsopenAccesspt_BR
dc.subjectceramics
dc.subjectsintering
dc.subjectmicrowave radiation
dc.subjectzirconium
dc.subjectsurfaces
dc.subjectroughness
dc.titleSurface roughness and volumetric contraction of a Y-TZP ceramic sintered by microwave energy and by resistive heatingpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorVALTER USSUI
ipen.autorDOLORES RIBEIRO RICCI LAZAR
ipen.codigoautor191
ipen.codigoautor240
ipen.contributor.ipenauthorVALTER USSUI
ipen.contributor.ipenauthorDOLORES RIBEIRO RICCI LAZAR
ipen.date.recebimento18-02pt_BR
ipen.identifier.fiSem F.I.pt_BR
ipen.identifier.ipendoc24389pt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublication1cce9f1b-6fcb-4537-8c18-841807a33b68
relation.isAuthorOfPublicatione2f75c76-2269-40cf-b463-bc5207084c5f
relation.isAuthorOfPublication.latestForDiscoverye2f75c76-2269-40cf-b463-bc5207084c5f
sigepi.autor.atividadeLAZAR, DOLORES:240:720:Npt_BR
sigepi.autor.atividadeASSUI, VALTER:191:720:Npt_BR
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