Studies on Dental Fluoride Releasing Polymers : (Part 3)Properties of Methacryloyl Fluoride-Methyl Methacrylate Copolymers as Dental Materials

DOI 6 Citations
  • KOJIMA Katsunori
    Institute for Medical and Dental Engineering, Tokyo Medical and Dental University
  • KADOMA Yoshinori
    Institute for Medical and Dental Engineering Tokyo Medical and Dental University
  • MASUHARA Eiichi
    Institute for Medical and Dental Engineering, Tokyo Medical and Dental University

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  • 歯科用フッ素徐放性ポリマーの研究 : (第3報)メタクリル酸フッ化物とメタクリル酸メチル共重合体の歯科材料としての性質

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Abstract

The methacryloyl fluoride(MF)-methyl methacrylate(MMA) copolymer was prepared and the rates of fluoride ion release from the copolymer and the blended polymer with poly(methylmethacrylate) (PMMA)were determined by the use of a fluoride electrode. The rates were found to be constant over 60 days.Infrared analysis revealed that the fluoride ion was released by the hydrolysis occurred exclusively at the MF-MF configurations, followed by an anhydride formation. The dentins of extracted bovine teeth were treated with 3% of various metal chlorides in a 10% citric acid aqueous solution, and the effect of the formulations of cleaning solution on the adhesive strength of 5%-4-META/MMA/TBB-O resin to the treated dentin surface was examined. The highest adhesive strength was obtained for 3% ferric chloride or 3% cupric chloride. The adhesive strengths of the fluoride-containing resin to human enamel treated with a 65% phosphoric acid aqueous solution and human dentin treated with 3% cupric chloride in a 10% citric acid aqueous solution were 8.3 MPa and 12.2 MPa, respectively.

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