Application of atmospheric-pressure plasma treatment to coat Ti-alloy orthodontic wire with white oxide layer

Naho Mitsuishi, Eri Miura-Fujiwara, Motoko Yamada, Tadachika Chiba, Hisashi Sato, Yoshimi Watanabe, Michiko Ito, Seigo Takashima, Masaaki Nakai, Toshikazu Akahori, Masaki Tanaka, Mitsuo Niinomi, Tsutomu Takeuchi

Research output: Contribution to journalArticlepeer-review

Abstract

Ti-29Nb-13Ta-4.6Zr (TNTZ) is one of the Ti alloys used for orthodontic wire. However, there is a problem that the metallic color of TNTZ may spoil the appearance of a row of teeth. In previous studies, white oxide coating on disk-shaped TNTZ samples was obtained by heat treatment or atmospheric-pressure plasma (APP) treatment. In this study, the fabrication process of white orthodontic wire by applying APP treatment is proposed. As a result, TNTZ wire which has a white oxide layer with comparable brightness to the surface of Japanese teeth has been successfully fabricated.

Original languageEnglish
Article numberSAAC09
JournalJapanese Journal of Applied Physics
Volume59
Issue numberSA
DOIs
Publication statusPublished - Jan 1 2020

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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