Zirconia surface treatment method
AssigneeAjou University Industry-Academic Cooperation Foundation
InventorsHee-Kyung Kim, Chul-Ho Kim, Sung Un Kang, Seung-Joo Kim, Yu-Kwon Kim
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Abstract
The present invention pertains to a method for treating the surface of 1-5 mol % (preferably, 3 mol %) yttria stabilized zirconia (1-5 mol % (3 mol %) yttria stabilized tetragonal zirconia polycrystal; 3Y-TZP), which is suitable for dental use, with plasma composed of nitrogen and argon mixed gas (N2/Ar). 3Y-TZP treated by the method has excellent antibacterial properties, osseointegration ability, and adhesive performance, and thus has the advantage of being applicable to dental implants etc.
Claims8
A method for treating the surface of zirconia for dental use, comprising the steps of:
- (a) preparing zirconia which is stabilized with 1 to 5 mol % of yttria;
- and
- (b) generating plasma composed of a mixed gas of nitrogen and argon (N2/Ar) and irradiating the surface of the zirconia with the mixed gas to reduce carbon content and increase oxygen content on the surface of the zirconia as compared to untreated zirconia,
- thereby increasing hydrophilicity of the zirconia.
Dependencies are inferred from the claim text.