Degradation in performance of orthodontic wires caused by hydrogen absorption during short-term immersion in 2.0% acidulated phosphate fluoride solution

Kazuyuki Kaneko, Ken'ichi Yokoyama, Keiji Moriyama, Kenzo Asaoka, Jun'ichi Sakai

    Research output: Contribution to journalArticle

    34 Citations (Scopus)

    Abstract

    The purpose of this study was to investigate the degradation in performance of four major alloys of orthodontic wires, namely nickel-titanium, beta titanium, stainless steel, and cobalt-chromium-nickel, caused by hydrogen absorption during short-term immersion in an acid fluoride solutions. The hydrogen-related degradation of orthodontic wires after immersion in 2.0% acidulated phosphate fluoride solution at 37°C for 60 minutes was evaluated by a tensile test, scanning electron microscope observation, and hydrogen thermal desorption analysis. Upon immersion, the tensile strengths of the nickel-titanium and beta titanium wires decreased. Particularly, the nickel-titanium wire fractured before yielding, and the fracture mode changed from ductile to brittle. The amounts of absorbed hydrogen in the nickel-titanium and beta titanium wires were 200 and 100 mass ppm, respectively. On the other hand, the tensile strengths of the stainless steel and cobalt-chromium-nickel wires were only slightly affected by immersion. The results of this study suggest that degradation in performance of orthodontic wires of titanium alloys occurs because of hydrogen absorption even after a short-term immersion in fluoride solutions.

    Original languageEnglish
    Pages (from-to)487-495
    Number of pages9
    JournalAngle Orthodontist
    Volume74
    Issue number4
    Publication statusPublished - 2004 Aug

    Fingerprint

    Acidulated Phosphate Fluoride
    Orthodontic Wires
    Immersion
    Hydrogen
    Tensile Strength
    Stainless Steel
    Chromium
    Cobalt
    Nickel
    Fluorides
    Hand Strength
    Titanium
    Hot Temperature
    Observation
    Electrons
    Acids
    nitinol
    beta titanium

    Keywords

    • Corrosion
    • Fluoride
    • Hydrogen embrittlement
    • Orthodontic wire

    ASJC Scopus subject areas

    • Dentistry(all)

    Cite this

    Degradation in performance of orthodontic wires caused by hydrogen absorption during short-term immersion in 2.0% acidulated phosphate fluoride solution. / Kaneko, Kazuyuki; Yokoyama, Ken'ichi; Moriyama, Keiji; Asaoka, Kenzo; Sakai, Jun'ichi.

    In: Angle Orthodontist, Vol. 74, No. 4, 08.2004, p. 487-495.

    Research output: Contribution to journalArticle

    Kaneko, Kazuyuki ; Yokoyama, Ken'ichi ; Moriyama, Keiji ; Asaoka, Kenzo ; Sakai, Jun'ichi. / Degradation in performance of orthodontic wires caused by hydrogen absorption during short-term immersion in 2.0% acidulated phosphate fluoride solution. In: Angle Orthodontist. 2004 ; Vol. 74, No. 4. pp. 487-495.
    @article{f7753f0ce01c4be69cdcf80d942b453e,
    title = "Degradation in performance of orthodontic wires caused by hydrogen absorption during short-term immersion in 2.0{\%} acidulated phosphate fluoride solution",
    abstract = "The purpose of this study was to investigate the degradation in performance of four major alloys of orthodontic wires, namely nickel-titanium, beta titanium, stainless steel, and cobalt-chromium-nickel, caused by hydrogen absorption during short-term immersion in an acid fluoride solutions. The hydrogen-related degradation of orthodontic wires after immersion in 2.0{\%} acidulated phosphate fluoride solution at 37°C for 60 minutes was evaluated by a tensile test, scanning electron microscope observation, and hydrogen thermal desorption analysis. Upon immersion, the tensile strengths of the nickel-titanium and beta titanium wires decreased. Particularly, the nickel-titanium wire fractured before yielding, and the fracture mode changed from ductile to brittle. The amounts of absorbed hydrogen in the nickel-titanium and beta titanium wires were 200 and 100 mass ppm, respectively. On the other hand, the tensile strengths of the stainless steel and cobalt-chromium-nickel wires were only slightly affected by immersion. The results of this study suggest that degradation in performance of orthodontic wires of titanium alloys occurs because of hydrogen absorption even after a short-term immersion in fluoride solutions.",
    keywords = "Corrosion, Fluoride, Hydrogen embrittlement, Orthodontic wire",
    author = "Kazuyuki Kaneko and Ken'ichi Yokoyama and Keiji Moriyama and Kenzo Asaoka and Jun'ichi Sakai",
    year = "2004",
    month = "8",
    language = "English",
    volume = "74",
    pages = "487--495",
    journal = "Angle Orthodontist",
    issn = "0003-3219",
    publisher = "E H Angle Orthodontists Research & Education Foundation, Inc.",
    number = "4",

    }

    TY - JOUR

    T1 - Degradation in performance of orthodontic wires caused by hydrogen absorption during short-term immersion in 2.0% acidulated phosphate fluoride solution

    AU - Kaneko, Kazuyuki

    AU - Yokoyama, Ken'ichi

    AU - Moriyama, Keiji

    AU - Asaoka, Kenzo

    AU - Sakai, Jun'ichi

    PY - 2004/8

    Y1 - 2004/8

    N2 - The purpose of this study was to investigate the degradation in performance of four major alloys of orthodontic wires, namely nickel-titanium, beta titanium, stainless steel, and cobalt-chromium-nickel, caused by hydrogen absorption during short-term immersion in an acid fluoride solutions. The hydrogen-related degradation of orthodontic wires after immersion in 2.0% acidulated phosphate fluoride solution at 37°C for 60 minutes was evaluated by a tensile test, scanning electron microscope observation, and hydrogen thermal desorption analysis. Upon immersion, the tensile strengths of the nickel-titanium and beta titanium wires decreased. Particularly, the nickel-titanium wire fractured before yielding, and the fracture mode changed from ductile to brittle. The amounts of absorbed hydrogen in the nickel-titanium and beta titanium wires were 200 and 100 mass ppm, respectively. On the other hand, the tensile strengths of the stainless steel and cobalt-chromium-nickel wires were only slightly affected by immersion. The results of this study suggest that degradation in performance of orthodontic wires of titanium alloys occurs because of hydrogen absorption even after a short-term immersion in fluoride solutions.

    AB - The purpose of this study was to investigate the degradation in performance of four major alloys of orthodontic wires, namely nickel-titanium, beta titanium, stainless steel, and cobalt-chromium-nickel, caused by hydrogen absorption during short-term immersion in an acid fluoride solutions. The hydrogen-related degradation of orthodontic wires after immersion in 2.0% acidulated phosphate fluoride solution at 37°C for 60 minutes was evaluated by a tensile test, scanning electron microscope observation, and hydrogen thermal desorption analysis. Upon immersion, the tensile strengths of the nickel-titanium and beta titanium wires decreased. Particularly, the nickel-titanium wire fractured before yielding, and the fracture mode changed from ductile to brittle. The amounts of absorbed hydrogen in the nickel-titanium and beta titanium wires were 200 and 100 mass ppm, respectively. On the other hand, the tensile strengths of the stainless steel and cobalt-chromium-nickel wires were only slightly affected by immersion. The results of this study suggest that degradation in performance of orthodontic wires of titanium alloys occurs because of hydrogen absorption even after a short-term immersion in fluoride solutions.

    KW - Corrosion

    KW - Fluoride

    KW - Hydrogen embrittlement

    KW - Orthodontic wire

    UR - http://www.scopus.com/inward/record.url?scp=2942671400&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=2942671400&partnerID=8YFLogxK

    M3 - Article

    C2 - 15387026

    AN - SCOPUS:2942671400

    VL - 74

    SP - 487

    EP - 495

    JO - Angle Orthodontist

    JF - Angle Orthodontist

    SN - 0003-3219

    IS - 4

    ER -