Development of an orthodontic elastic material using EMA-based resin combined with 1-butanol

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  • MASUDA Takehiro
    Department of Orthodontics, School of Dentistry, Aichi-Gakuin University
  • MIYAZAWA Ken
    Department of Orthodontics, School of Dentistry, Aichi-Gakuin University
  • UEDA Naoya
    Department of Orthodontics, School of Dentistry, Aichi-Gakuin University
  • HATA Yuki
    Department of Orthodontics, School of Dentistry, Aichi-Gakuin University
  • KAWAI Tatsushi
    Department of Dental Material Science, School of Dentistry, Aichi-Gakuin University
  • GOTO Shigemi
    Department of Orthodontics, School of Dentistry, Aichi-Gakuin University

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Abstract

For the development of new orthodontic elastic material, 1-butanol was added to PEMA-TA/HX resin. In the present study, basic experiments to reveal the mechanical properties of the materials were conducted. FT-IR spectroscopy showed that addition of 1-butanol did not cause any chemical changes to the PEMA-TA/HX resin. After addition of 1-butanol to PEMA-TA/HX resin, the modulus of elasticity, instantaneous modulus elasticity, retarded elasticity and viscosity were lowered in a concentration-dependent manner, whereas the elastic strain was increased in a concentration-dependent manner. Moreover, on the application of heat a shape-memory effect was observed. These results suggest that the modulus of elasticity of this material can be adjusted. Additionally, this material has the ability to restore force as a function of its shape-memory effect in cases of plastic deformation at the insertion of appliances. This new orthodontic elastic material has the potential to be clinically effective in orthodontic treatment.

Journal

  • Dental Materials Journal

    Dental Materials Journal 30 (5), 664-671, 2011

    The Japanese Society for Dental Materials and Devices

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