title: XPS, AES and SEM analysis of recent dental implants.
abstract: Today, surface chemistry modifications of titanium implants have become a development strategy for dental implants. The present study investigated the chemistry and morphology of commercially available dental implants (Nobel biocare TiUnite, Astra AB OsseoSpeed, 3i Osseotite, ITI-SLA). X-ray photoelectron spectroscopy (XPS) and auger electron spectroscopy were employed for the analysis of surface chemistry. The morphology was investigated by scanning electron microscopy. The present study demonstrated the major differences of surface properties, mainly dependent on the surface treatment used. The blasting and acid etching technique for the OsseoSpeed, Osseotite and SLA surfaces generally showed mainly TiO(2), but a varying surface morphology. In contrast, the electrochemical oxidation process for TiUnite implants not only produces microporous surface (pore size: 0.5-3.0microm), but also changes surface chemistry due to incorporation of anions of the used electrolyte. As a result, TiUnite implants contain more than 7at.% of P in oxide layer and higher amounts of hydroxides compared to the other implants in XPS analysis. F in OsseoSpeed implants was detected at 0.3% before as well as after sputter cleaning.
authors.affiliation: Department of Biomaterials/Handicap Research, Institute for Clinical Sciences, The Sahlgrenska Academy at Gothenburg University, Sweden. byung-soo.kang@biomaterials.gu.se
authors.forename: Byung-Soo
authors.initials: BS
authors.lastname: Kang
authors.forename: Young-Taeg
authors.initials: YT
authors.lastname: Sul
authors.forename: Se-Jung
authors.initials: SJ
authors.lastname: Oh
authors.forename: Hyun-Ju
authors.initials: HJ
authors.lastname: Lee
authors.forename: Tomas
authors.initials: T
authors.lastname: Albrektsson
mesh_terms: D015921:Dental Implants; D017267:Dental Prosthesis Design; D019544:Equipment Failure Analysis; D008855:Microscopy, Electron, Scanning; D013052:Spectrometry, X-Ray Emission; D013499:Surface Properties
chemical_list: D015921:Dental Implants