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In vitro characterization and osteoblast responses to nanostructured photocatalytic TiO2 coated surfaces
Malmö högskola, Faculty of Odontology (OD).
Malmö högskola, Faculty of Odontology (OD).
Malmö högskola, Faculty of Odontology (OD).
Malmö högskola, Faculty of Health and Society (HS), Department of Biomedical Science (BMV).ORCID iD: 0000-0001-6937-3057
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2012 (English)In: Acta Biomaterialia, ISSN 1742-7061, E-ISSN 1878-7568, Vol. 8, no 6, p. 2411-2416Article in journal (Refereed) Published
Abstract [en]

The aims of the study were to characterize a nanostructured photoactive titanium dioxide (TiO(2)) coating and to compare the cellular response of human osteoblasts before and after ultraviolet (UV) irradiation of the coating. A specific nanostructured TiO(2) powder (Degussa P-25), which consists of approximately 80% anatase and 20% rutile, was spin-coated onto commercially pure titanium discs, and was heat-treated thereafter. After topographical, chemical and photocatalytic property characterizations, human osteoblasts were cultured on the coated discs before and after UV irradiation. Cell morphology was evaluated by scanning electron microscopy (SEM), and cell viability was analysed by 3-(4,5-dimethylthiazol)-2,5-diphenyltetrazolium bromide (MTT) assay. From the contact angle analysis, the wettability significantly improved after UV irradiation. The cultured cells were flattened with numerous elongated lammellipodia; however, no morphological differences were indicated between -UV and +UV surfaces. The MTT assay analysis showed that -UV surface presented significantly higher viability compared to the +UV surface except for one cell population group at 3h where there were no differences. The nanostructured photoactive TiO(2) surface improved its hydrophilicity by UV irradiation, however no enhancing effect in cell response was confirmed at the time tested compared to the non-irradiated surface.

Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 8, no 6, p. 2411-2416
Keywords [en]
Photocatalytic properties, Hydrophilicity, Osteoblasts, Nanostructures, Anatase
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:mau:diva-15724DOI: 10.1016/j.actbio.2012.03.010ISI: 000305036100043PubMedID: 22409872Scopus ID: 2-s2.0-84860518346Local ID: 19756OAI: oai:DiVA.org:mau-15724DiVA, id: diva2:1419246
Available from: 2020-03-30 Created: 2020-03-30 Last updated: 2024-02-05Bibliographically approved

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Hayashi, MarikoJimbo, RyoLindh, LiselottSotres, JavierWennerberg, Ann

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