Nanofilled bis-acryl composite resin materials: Is it necessary to polish?

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dc.contributor.authorAugusto, Marina Gullo [UNESP]
dc.contributor.authorde Andrade, Guilherme Schmitt [UNESP]
dc.contributor.authorCaneppele, Taciana Marco Ferraz [UNESP]
dc.contributor.authorBorges, Alessandra Bühler [UNESP]
dc.contributor.authorTorres, Carlos Rocha Gomes [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2020-12-12T02:41:08Z
dc.date.available2020-12-12T02:41:08Z
dc.date.issued2020-01-01
dc.description.abstractStatement of problem: Manufacturers of the recently introduced nanofilled bis-acryl composite resins no longer recommend polishing to produce interim restorations; however, whether this advice is appropriate is unclear. Purpose: The purpose of this in vitro study was to evaluate the effect of the type of interim resin material, polishing procedure, and artificial staining on surface roughness, gloss, and color. Material and methods: Disk-shaped specimens were prepared from 1 unfilled acrylic resin (Duralay) and 3 bis-acryl composite resins (Structur 3—nanofilled, Systemp C&B—microhybrid, Proviplast—microhybrid). The specimens of each material were assigned to 2 subgroups (n=15): polished and unpolished. Surface roughness (Ra—μm), gloss (UB), and color (ΔE) were analyzed at baseline and after 14 days of artificial staining. Roughness and gloss data were separately analyzed by 3-way ANOVA and color by 2-way ANOVA, followed by the post hoc Tukey test (α=.05). Results: The baseline roughness of all materials was significantly reduced by the polishing procedure, whereas the baseline gloss was increased (P<.001). Only the unpolished Proviplast had a significant increase in Ra values after aging. Structur 3 had higher gloss than Systemp C&B and Proviplast. The acrylic resin had the lowest color change after staining. Conclusions: The polishing procedure produced smother and glossier surfaces for all the materials tested. The nanofilled bis-acryl composite resin material had higher gloss than the microhybrid bis-acryls tested, but it was not different from the acrylic resin. The 14 days of artificial staining did not promote significant changes in Ra or gloss values, except for Ra in the unpolished Proviplast subgroup, indicating excellent performance of the materials. The acrylic resin had the highest color stability.en
dc.description.affiliationPhD student Department of Restorative Dentistry Institute of Science and Technology São Paulo State University UNESP
dc.description.affiliationPhD student Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University UNESP
dc.description.affiliationAssociate Professor Department of Restorative Dentistry Institute of Science and Technology São Paulo State University UNESP
dc.description.affiliationUnespPhD student Department of Restorative Dentistry Institute of Science and Technology São Paulo State University UNESP
dc.description.affiliationUnespPhD student Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University UNESP
dc.description.affiliationUnespAssociate Professor Department of Restorative Dentistry Institute of Science and Technology São Paulo State University UNESP
dc.identifierhttp://dx.doi.org/10.1016/j.prosdent.2020.03.015
dc.identifier.citationJournal of Prosthetic Dentistry.
dc.identifier.doi10.1016/j.prosdent.2020.03.015
dc.identifier.issn0022-3913
dc.identifier.scopus2-s2.0-85084841594
dc.identifier.urihttp://hdl.handle.net/11449/201761
dc.language.isoeng
dc.relation.ispartofJournal of Prosthetic Dentistry
dc.sourceScopus
dc.titleNanofilled bis-acryl composite resin materials: Is it necessary to polish?en
dc.typeArtigo
unesp.author.lattes3135367849609938[5]
unesp.author.orcid0000-0002-9485-5514[5]

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