A Study of Toothbrush Abrasion on Adhesive Resin Cement. Filler Contents of the Routing Cement.

  • Koizumi Hiroyasu
    Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry
  • Yoshida Tsuyoshi
    Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry
  • Kakehashi Yoshiyuki
    Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry
  • Igarashi Takayoshi
    Department of Crown and Bridge Prosthodontics, Nihon University School of Dentistry
  • Nishiyama Minoru
    Department of Dental Materials, Nihon University School of Dentistry

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Other Title
  • 接着性レジンセメントの歯ブラシ摩耗についての研究  フィラー含有ルーティングセメントにおける歯ブラシ摩耗
  • Filler Contents of the Routing Cement
  • フィラー含有ルーティングセメントにおける歯ブラシ摩耗

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Abstract

Although there have been reports on the abrasion of resin cements, cement film thickness was hardly considered.<BR>Takamisawa evaluated the influence of the cement film thickness on the abrasion of non-filler type resin cement, and concluded that there was a close relationship between number of times and depth of abrasion. The rate of increase of the wear depth was affected by the cement film thickness.<BR>Since most resin cements contained microfiller, Variolink (Vivadent) was examined and it was IPSEmpress (Vivadent) cem kit.<BR>Newly-designed appliances to prescribe 3 cement film thicknesses were used, namely 50, 100, and 200 μm, and the abrasion for each thickness in toothbrush abrasion test was observed.<BR>Continuous measurements were made of the sectional profile, wear depth, and surface roughness by scanning laser microscope.<BR>In SEM observation, the abrasion surface showed different aspects between non-filler and microfiller types.<BR>While there was a close relationship between number of times and depth of abrasion as in the case of non-filler type, the amount of increase of the wear depth varied with the cement film thickness.<BR>Test results indicated that the cement film thickness had influence on the abrasion of resin cement, and resistance of abrasion was influenced by filler type and resin matrix.

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