Surface characterization of Ti and Y-TZP following non-thermal plasma exposure.

Autor: Silva NR; Department of Prosthodontics, New York University College of Dentistry, New York, USA. nrd1@nyu.edu, Coelho PG, Valverde GB, Becker K, Ihrke R, Quade A, Thompson VP
Jazyk: angličtina
Zdroj: Journal of biomedical materials research. Part B, Applied biomaterials [J Biomed Mater Res B Appl Biomater] 2011 Oct; Vol. 99 (1), pp. 199-206. Date of Electronic Publication: 2011 Jun 28.
DOI: 10.1002/jbm.b.31887
Abstrakt: Novel non-thermal plasma (NTP) technology has the potential to address the bonding issues of Y-TZP and Ti surfaces. This study aims to chemically characterize and evaluate the surface energy (SE) of Y-TZP and Ti surfaces after NTP application. Y-TZP and Ti discs were treated with a hand-held NTP device followed by SE evaluation. Spectra of Y-TZP 3d and Ti 2p regions, survey scans, and quantification of the elements were performed via X-ray photoelectron Spectroscopy (XPS) prior and after NTP. Separate Y-TZP and Ti discs were NTP treated for contact angle readings using (10-methacryloyloxydecyl dihydrogenphosphate) MDP primer. Significant augmentation of SE values was observed in all NTP treated groups. XPS detected a large increase in the O element fraction on both Y-TZP and Ti surfaces. Reduction of contact angle reading was obtained when the MDP primer was placed on NTP treated Y-TZP. Ti surface showed high SE before and after NTP application on Ti surfaces. NTP decreased C and increased O on both surfaces independently of application protocol. Wettability of MDP primer on Y-TZP was significantly increased after NTP. The high polarity obtained on Y-TZP and Ti surfaces after NTP applications appear promising to enhance bonds.
(Copyright © 2011 Wiley Periodicals, Inc.)
Databáze: MEDLINE
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