Material Design of Denture Base Resin Reinforced by Shape Memory Alloy Fiber

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  • HAMADA Kenichi
    Department of Dental Engineering, School of Dentistry, Tokushima University
  • KAWAN Fumiaki
    Department of Removable Prosthodontics, School of Dentistry, Tokushima University
  • ASAOKA Kenzo
    Department of Dental Engineering, School of Dentistry, Tokushima University

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  • 形状記憶合金繊維で強化した床用レジンの材料設計

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We evaluated the tensile strength of denture base resin reinforced by shape memory alloy fiber. Fiber surface treatment with primer decreased the fiber-pull-out in a shape-memory-fiber reinforced denture base resin matrix composite and increased the tensile strength. We speculated that the increase in tensile strength was caused by an increase in interfacial strength between the fiber and the matrix. Since heat treatment at above 60℃ increased the composite tensile strength, this composite worked as a smartcomposite. Although there was no effect of heat treatment temperature on tensile strength, flexion of composite was observed after heat treatment at a higher temperature, suggesting that the heat treatment temperature should be lower. We speculated that the slight increase in tensile strength after heat treatment was caused by the higher martensite transformation starting temperature of the fiber.

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