title: Surface characterization of Ti and Y-TZP following non-thermal plasma exposure.
abstract: 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.
authors.affiliation: Department of Prosthodontics, New York University College of Dentistry, New York, USA. nrd1@nyu.edu
authors.forename: Nelson R F A
authors.initials: NR
authors.lastname: Silva
authors.forename: Paulo G
authors.initials: PG
authors.lastname: Coelho
authors.forename: Guilherme B
authors.initials: GB
authors.lastname: Valverde
authors.forename: Kurt
authors.initials: K
authors.lastname: Becker
authors.forename: Roland
authors.initials: R
authors.lastname: Ihrke
authors.forename: Antje
authors.initials: A
authors.lastname: Quade
authors.forename: Van P
authors.initials: VP
authors.lastname: Thompson
mesh_terms: D008422:Materials Testing; D056951:Photoelectron Spectroscopy; D058626:Plasma Gases / Q000737:chemistry; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D017155:Wettability; D015019:Yttrium / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry*
chemical_list: D058626:Plasma Gases; C499362:yttria stabilized tetragonal zirconia; D015019:Yttrium; D015040:Zirconium; D014025:Titanium