Transformation behavior of nickel-titanium orthodontic wires under tensile load

Masahiro Iijima, Mitsuru Ohta, William A. Brantley, Atsuko Naganishi, Takashi Murakami, Takeshi Muguruma, Itaru Mizoguchi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This study investigated transformations of nickel-titanium wires using differential scanning calorimetry (DSC) and thermomechanical analysis (TMA) under tensile load (100 gf or 500 gf). Two nickel-titanium wires, 35°C Copper Ni-Ti and Nitinol SE, were selected. DSC analyses were performed between -90° and 100°C. Specimens prepared for TMA were approximately 150 μm thick and 12 mm long. TMA analyses were performed between -120° and 100°C. With TMA, all transformation temperatures for a tensile load of 500 gf, obtained from both the heating and cooling curves, were higher than those for a tensile load of 100 gf. While mean As and Af temperatures for Copper Ni-Ti obtained by TMA were much higher than those obtained by DSC analysis, mean Ms and Mf temperatures obtained by TMA were much lower than those obtained by DSC analysis. The transformation behavior of nickel-titanium wires with change in temperature was affected by application of tensile load.

Original languageEnglish
Pages (from-to)398-403
Number of pages6
JournalDental materials journal
Volume30
Issue number3
DOIs
Publication statusPublished - 2011 May 1
Externally publishedYes

Keywords

  • DSC
  • Nickel-titanium
  • Orthodontic wire
  • TMA
  • Transformation

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

Fingerprint Dive into the research topics of 'Transformation behavior of nickel-titanium orthodontic wires under tensile load'. Together they form a unique fingerprint.

  • Cite this

    Iijima, M., Ohta, M., Brantley, W. A., Naganishi, A., Murakami, T., Muguruma, T., & Mizoguchi, I. (2011). Transformation behavior of nickel-titanium orthodontic wires under tensile load. Dental materials journal, 30(3), 398-403. https://doi.org/10.4012/dmj.2010-196