Non-thermal atmospheric pressure plasma functionalized dental implant for enhancement of bacterial resistance and osseointegration
| Autor: | Eun Ha Choi, Kyoung Nam Kim, Jung-Hwan Lee, Hae-Won Kim, Won Seok Jeong, Kwang Mahn Kim, Seog Jin Seo |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Plasma Gases Surface Properties medicine.medical_treatment chemistry.chemical_element 02 engineering and technology Osseointegration Contact angle 03 medical and health sciences 0302 clinical medicine Cell Adhesion medicine Animals General Materials Science Dental implant General Dentistry Dental Implants Titanium biology 030206 dentistry Adhesion 021001 nanoscience & nanotechnology biology.organism_classification Anti-Bacterial Agents Rats Streptococcus sanguinis chemistry Mechanics of Materials Microscopy Electron Scanning Surface modification Alkaline phosphatase Streptococcus sanguis 0210 nano-technology Biomedical engineering |
| Zdroj: | Dental Materials. 33:257-270 |
| ISSN: | 0109-5641 |
| Popis: | Even though roughened titanium (Ti) and Ti alloys have been clinically used as dental implant, they encourage bacterial adhesion, leading to failure of the initial stability. Here, the non-thermal atmospheric pressure plasma jet (NTAPPJ) functionalized Ti and Ti alloy were investigated to promote cellular activities but inhibit the initial attachment of the adherent pioneer bacterium, Streptococcus sanguinis, without topographical changes.After the produced radicals from NTAPPJ were characterized, bacterial adhesion to specimens was assessed by PrestoBlue assay and live-dead staining with or without the NTAPPJ functionalizing. After the surface was characterized using optical profilometry, X-ray photoelectron spectroscopy and contact angle analysis, the ions released from the specimens were investigated. In vitro initial cell attachment (4h or 24h) with adhesion images and alkaline phosphatase activity (ALP, 14 days) measurements were performed using rat bone marrow-derived mesenchymal stem cells.The initial bacterial adhesion to the Ti and Ti alloy was significantly inhibited after NTAPPJ functionalizing (p0.05) compared to those without NTAPPJ functionalizing. The bacterial adhesion-resistance effect was induced by carbon cleaning, which was dependent on the working gas used on the Ti specimens (nitrogenammonia and air, p0.05). The initial cell adhesion with well-developed vinculin localization and consequent ALP activity at 14days to the NTAPPJ-functionalized specimens were superior to the non-treated specimens.For the promising success of dental implants, NTAPPJ functionalizing is suggested as a novel surface modification technique; this technique can help ensure the success of integration between the dental implants and bone tissues with less concern of inflammation. |
| Databáze: | OpenAIRE |
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