Development of Arch Form Esthetic Orthodontic Wires by Light Polymerization

DOI 26 References
  • TOYOIZUMI Hiroshi
    Section of Orthodontics, Department of Oral Functional Science, Division of Oral Medical Science, Graduate School for Dentistry, Hokkaido University
  • WATARI Fumio
    Section of Dental Materials and Engineering, Department of Oral Health Science, Division of Oral Medical Science, Graduate School for Dentistry, Hokkaido University
  • IMAI Tohru
    Obihiro Art Orthodontic Clinic
  • KOBAYASHI Masahiro
    Department of Industrial Chemistry, Chiba Institute of Technology
  • YAMAGATA Shuichi
    Section of Orthodontics, Department of Oral Functional Science, Division of Oral Medical Science, Graduate School for Dentistry, Hokkaido University
  • IIDA Jun-ichiro
    Section of Orthodontics, Department of Oral Functional Science, Division of Oral Medical Science, Graduate School for Dentistry, Hokkaido University

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  • 光重合法によるアーチ型審美矯正ワイヤーの開発

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The arch form is indispensable for clinical application of the Fiber−Reinforced−Plastic （FRP） wires being developed in combination with biocompatible CaO−P2O5−SiO2−Al2O3（CPSA ） glass fibers and polymer matrix. Since the production is limited to a straight form ill the conventional hot drawing method, light polymerization method and urethanedimetha−crylate （UDMA ） resin were adopted for the fabrication of arch form FRP wires in this study, using the ready−made arch form metal wire. Dimensional accuracy and mechanical properties were then investigated. Inter width of the FRP arch wires was smaller by 0.1−0.2 mm （in front） and 0.4−0.7 mm （in rear） compared to the original model, The cross sectional form was uniformly round (0.47−0.48 mmφ). Dimensional accuracy in the molding was thus sufficiently good. OIl flexural test, Young's nioclulus could be controlled in the range of 5−40 GPa, by changing the volume fraction of glass fiber 10−60％. The realization of an arch form FRP wire would contribute to its ap Plication to clinical treatment.

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