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- Title
Surface characterization of commercially available yttria-stabilized tetragonal zirconia polycrystalline in water and Hanks' solution using X-ray photoelectron spectroscopy.
- Authors
Makoto OISHI; Yusuke TSUTSUMI; Peng CHEN; Michiko NAKAISHI; Maki ASHIDA; Hisashi DOI; Takao HANAWA
- Abstract
To elucidate the mechanism of adhesion of soft and hard tissues to yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP), Y-TZP and titanium disks were immersed in ultrapure water and in Hanks' solution, and the changes in the surface compositions and chemical states were characterized using X-ray photoelectron spectroscopy. After immersion in ultrapure water for 60 days, the concentration of hydroxyl groups on the Y-TZP surface increased. In addition, only phosphate ions were incorporated into the surface during immersion in Hanks' solution, while other ions did not react. On the other hand, the surface of Ti was also hydrated in ultrapure water; however, calcium phosphate formed on it during immersion in Hanks' solution. Therefore, the reactivity of Y-TZP with electrolytes was lower than that of Ti. We conclude that the formation of the phosphate on the Y-TZP surface in physiological conditions possibly enhances the adhesion of soft and hard tissues to Y-TZP.
- Subjects
X-ray photoelectron spectroscopy; SURFACE analysis; CALCIUM phosphate; WATER immersion; HYDROXYL group
- Publication
Dental Materials Journal, 2019, Vol 38, Issue 3, p496
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2018-299