Polymerization of MMA by TBBO in the Presence of Ferric Chloride-citric Acid Solution and Collagen : A Model for Adhesion of MMA Resins to Dentin

DOI 3 Citations
  • KADOMA Yoshinori
    Institute for Medical and Dental Engineering, Tokyo Medical and Dental University
  • KOJIMA Katsunori
    Institute for Medical and Dental Engineering, Tokyo Medical and Dental University
  • IMAI Yohji
    Institute for Medical and Dental Engineering, Tokyo Medical and Dental University

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  • 塩化第二鉄-クエン酸水溶液およびコラーゲン存在下のTBBOによるMMAの重合 : 象牙質に対するMMAレジンの接着のモデル実験

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Abstract

Polymerization of the MMA/TBBO resin system was investigated in the presence of collagen powder treated with 3wt% ferric chloride-10wt% citric acid solution (FC-CA), and the curing time, amount of unpolymerized monomer and molecular weight were measured. The curing time of MMA/TBBO resins was markedly reduced in the presence of FC-CA treated collagen, whereas it was increased by either FC-CA or collagen alone. The presence of FC-CA treated collagen resulted in reduction of the amount of unpolymerized monomer. Acceleration of curing and reduction of the amount of unpolymerized MMA were especially significant with MMA/TBBO resins containing 5wt% of 4-META. The number-average molecular weight of MMA/BTTO resin cured in the presence of FC-CA treated collagen increased to 10.0×104, while the value for MMA/TBBO resin cured alone was 5.7×104. The findings suggested that FC-CA contributes to improved bonding of the resins to dentin by promoting polymerization of MMA.

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