Send to

Choose Destination
Dent Mater J. 2019 Jul 31;38(4):604-610. doi: 10.4012/dmj.2018-273. Epub 2019 Jun 13.

Assessment of characteristics and cytotoxic effects of 316L stainless steel coated with a new titanium oxide nano-structure coating method.

Author information

Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University.
Department of Dental and Biomedical Materials Science, Graduate School of Biomedical Sciences, Nagasaki University.


In order to fabricate the TiO2 nano-structure coating on the Ti-free stainless steel with good adhesion, commercially obtained 316L stainless steel (316L SS) plates were chemically treated by KOH aqueous solution including TiH2 powder at 60ºC for 3 days in an oil bath shaker, and subsequently heated up to 550-800ºC under the air atmosphere. The crystal structure, color, adhesive strength and cytotoxic effects of coating were investigated. Fiber-like hydrogen titanate nano-structures were formed on the 316L SS surface and made a fine network. X-ray diffraction (XRD) patterns showed that hydrogen titanate phase converted to anatase and rutile after heat treatment above 550ºC. The heat treated sample at 800ºC for 1 h showed the highest adhesive strength and the lowest cytotoxicity. The alkali treatment method in this study is expected to be used on the other Ti-free metals with further research.


Adhesion; Color; Cytotoxicity; Nano-structure; Titanium oxide

Free full text

Supplemental Content

Full text links

Icon for J-STAGE, Japan Science and Technology Information Aggregator, Electronic
Loading ...
Support Center