Addition of the Photo-cured Composite Resin for Crown to Abrasion-resistant Plastic Posterior Denture Teeth: Effect of Surface Treatment on Bond Strength.

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  • Kawano Fumiaki
    Department of Removable Prosthodontics, The University of Tokushima, School of Dentistry
  • Kamata Takeshi
    Department of Removable Prosthodontics, The University of Tokushima, School of Dentistry
  • Oka Kenji
    Department of Removable Prosthodontics, The University of Tokushima, School of Dentistry
  • Ohguri Takafumi
    Department of Removable Prosthodontics, The University of Tokushima, School of Dentistry
  • Ichikawa Tetsuo
    Department of Removable Prosthodontics, The University of Tokushima, School of Dentistry
  • Matsumoto Naoyuki
    Department of Removable Prosthodontics, The University of Tokushima, School of Dentistry

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Other Title
  • 硬質レジン歯への光重合型硬質レジンの添加について　　表面処理が接合強さに及ぼす影響
  • Effect of Surface Treatment on Bond Strength
  • 表面処理が接合強さに及ぼす影響

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Abstract

Bond strength between abrasion-resistant plastic teeth and photo-cured composite resin for crown was investigated to evaluate the effect of eight kinds of surface treatment. The shear bond strength of abrasion-resistant plastic teeth to photo-cured composite resin was measured using a universal testing machine at a crosshead speed of 1 mm/min before and after thermocycling.<BR>The result were as follows:<BR>1. The shear bond strength of water saturated abrasion-resistant plastic teeth to photo-cured composite resin was significantly less than that of dried abrasion-resistant plastic teeth.<BR>2. The surface treatment with silane coupling agent, bonding agent, and methylene chloride did not enhance the shear bond strength between abrasion-resistant plastic teeth and photo-cured composite resin.<BR>3. The air abrasive treatment showed significant higher shear bond strength than no treatment.<BR>4. The air abrasive treatment plus bonding agent showed the greatest bond strength and durability of all treatments.<BR>It was concluded that the air abrasive treatment was effective for strengthening the shear bond strength of abrasion-resistant plastic teeth to photo-cured composite resin. All surface treatments without air abrasive treatment did not enhance their shear bond strength in service.

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