Abstract:
:Photocatalytic activity from the reaction of titanium oxide with ultraviolet light has recently gained much attention. In particular, there is scientific interest in inducing photocatalytic reactions on Ti-Ni alloy, a material widely used in orthodontic applications. However, it is believed that inducing a photocatalytic reaction with an amorphous oxide film on the alloy is a difficult challenge. In this study, therefore, we sought to induce a photocatalytic reaction on Ti-Ni alloy by subjecting the latter to electrolytic and heat treatments. Then, an antibacterial test was used to examine whether a photocatalytic reaction had indeed been induced. By thickening the titanium oxide film with electrolytic treatment and then applying heat treatment, the surface oxide film of Ti-Ni alloy was thus modified from amorphous structure to rutile crystal. Furthermore, it was revealed that Ti-Ni alloy had an antibacterial effect by virtue of the photocatalytic reaction.
journal_name
Dent Mater Jjournal_title
Dental materials journalauthors
Horiuchi Y,Horiuchi M,Hanawa T,Soma Kdoi
10.4012/dmj.26.924subject
Has Abstractpub_date
2007-11-01 00:00:00pages
924-9issue
6eissn
0287-4547issn
1881-1361journal_volume
26pub_type
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