Development of MDP-based one-step self-etch adhesive —Effect of additional 4-META on bonding performance—

  • IWAI Hitoshi
    Department of Operative Dentistry, Nihon University School of Dentistry at Matsudo
  • FUJITA Kou
    Department of Operative Dentistry, Nihon University School of Dentistry at Matsudo
  • IWAI Hirotoshi
    Department of Operative Dentistry, Nihon University School of Dentistry at Matsudo
  • IKEMI Takuji
    Department of Operative Dentistry, Nihon University School of Dentistry at Matsudo
  • GOTO Haruhiko
    Department of Crown Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo
  • AIDA Masahiro
    Department of Crown Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo
  • NISHIYAMA Norihiro
    Department of Dental Biomaterials, Nihon University School of Dentistry at Matsudo

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  • Development of MDP-based one-step self-etch adhesive -effect of additional 4-META on bonding performance

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Description

We designed three experimental 10-methacryloyloxydecyl dihydrogen phosphate (MDP)-based one-step (EX) adhesives consisting of MDP, urethane dimethacrylate, and triethylene glycol dimethacrylate adhesives with different water contents (98.4, 196.8, and 294.4 mg/g), and 4-methacryloyloxyethyl trimellitic anhydride (4-META) or 2-hydroxyethyl methacrylate (HEMA)-containing onestep adhesive. The effect of the amount of MDP-calcium (MDP-Ca) salt produced through demineralization of enamel and dentin on the bonding performance was examined. The efficacy of 4-META and HEMA was then discussed. When the amount of water in EX adhesive was increased, the production amount of MDP-Ca salt of enamel increased, but not the dentin. The enamel bond strength slightly increased with increasing the production amount of MDP-Ca salt, in contrast to the dentin. However, addition of 4-META in the EX adhesive (water content=98.4 mg/g) increased both bond strengths, although the production amounts of MDP-Ca salt significantly decreased. The 4-META enhances both bond strengths more effectively than the HEMA.

Journal

  • Dental Materials Journal

    Dental Materials Journal 32 (1), 1-9, 2013

    The Japanese Society for Dental Materials and Devices

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