Nanoneedle-like zinc oxide as a filler particle for an experimental adhesive resin

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dc.contributor.authorLeitune, Vicente Castelo Brancoen_US
dc.contributor.authorSchiroky, Priscila Raquelen_US
dc.contributor.authorGenari, Brunaen_US
dc.contributor.authorCamassola, Melissaen_US
dc.contributor.authorLucca S, Felipe Antonioen_US
dc.contributor.authorSamuel, Susana Maria Werneren_US
dc.contributor.authorCollares, Fabrício Mezzomoen_US
dc.date.accessioned2020-01-02T06:47:00Z
dc.date.available2020-01-02T06:47:00Z
dc.date.issued2019-09
dc.description.abstractAim: The aim of this study was to develop an experimental adhesive resin with nanoneedle-like zinc oxide (N-ZnO), an inorganic filler, that could avoid particle agglomeration and lead to a homogeneous stress distribution within the material and characterize it. Materials and Methods: N-ZnO particles obtained by a thermal evaporation technique were characterized regarding size and surface area and added at 0 (control), 1, 2, 5, and 10 wt%, to an experimental adhesive resin. The following experimental adhesive resins' properties were assessed: radiopacity, contact angle to conditioned enamel and dentin, color, degree of conversion, flexural strength, resistance to degradation, and cytotoxicity. Statistical analysis was performed using one-way ANOVA and Tukey's post hoc test and paired Student's t-test. Results: Particles presented a mean particle size of 40 nm and a specific surface area of 16 m2/g. N-ZnO10%showed an increased radiopacity when compared to N-ZnO0%. Contact angles were significantly higher for N-ZnO10%at enamel and N-ZnO2%, N-ZnO5%, and N-ZnO10%at dentin. All groups showed color change when compared to N-ZnO0%. Higher the N-ZnO concentration, lower the degree of conversion. There were no significant differences between the groups for flexural strength and resistance to degradation. The addition of N-ZnO showed no difference in cytotoxicity when compared to positive control, N-ZnO0%, and all groups showed higher values than negative control. Conclusions: N-ZnO possibly exceeded potential limitations due to particles' agglomeration and improved the transference and distribution of stress within the material. It could be effectively used as a filler for adhesive resins.en_US
dc.identifier.affiliationsDepartment of Conservative Dentistry, Dental Materials Laboratory - LAMAD, School of Dentistry, Federal University of Rio Grande do Sul, RS, Brazilen_US
dc.identifier.affiliationsDepartment of Genetics, Laboratory of Stem Cells and Tissue Engineering, Brazilian Lutheran University, RS, Brazilen_US
dc.identifier.affiliationsDepartment of Materials, Laboratory of Ceramic Materials, Federal University of Rio Grande do Sul, RS, Brazilen_US
dc.identifier.citationLeitune Vicente Castelo Branco, Schiroky Priscila Raquel, Genari Bruna, Camassola Melissa, Lucca S Felipe Antonio, Samuel Susana Maria Werner, Collares Fabrício Mezzomo. Nanoneedle-like zinc oxide as a filler particle for an experimental adhesive resin. Indian Journal of Dental Research. 2019 Sep; 30(5): 777-782en_US
dc.identifier.issn0970-9290
dc.identifier.issn1998-3603
dc.identifier.placeIndiaen_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/192316
dc.languageenen_US
dc.publisherIndian Society for Dental Researchen_US
dc.relation.issuenumber5en_US
dc.relation.volume30en_US
dc.source.urihttps://dx.doi.org/10.4103/ijdr.IJDR_779_16en_US
dc.subjectDentin‑bonding agentsen_US
dc.subjectnanoparticlesen_US
dc.subjectzinc oxideen_US
dc.titleNanoneedle-like zinc oxide as a filler particle for an experimental adhesive resinen_US
dc.typeJournal Articleen_US
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