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    • 91. 发明授权
    • Dental and medical cement
    • 牙科和医用水泥
    • US06860932B2
    • 2005-03-01
    • US10241697
    • 2002-09-12
    • Yoshiki Oshida
    • Yoshiki Oshida
    • A61K6/06A61K6/083C03C8/16C04B28/28
    • A61K6/033A61K6/0835C03C8/16C04B28/28C04B2111/00836C04B14/30C04B20/008C04B20/1062C04B24/2641C04B14/22C04B14/303C04B14/305C04B14/306C04B14/366C08L33/00
    • Cement materials useful in dental and medical fields with improved mechanical properties is described. The cement material includes fluoroaluminosilicate powder and poly(acrylic acid) liquid. Biocompatible oxide powders are further included resulting in improved mechanical properties of maximum strength, rigidity and toughness. Variations of the cement material resulting in improved mechanical properties include the concentration of poly(acrylic acid) liquid, and combining the fluoroaluminosilicate powder with different biocompatible oxide powders. Useful oxide powders include hydroxyapatite powders, titanium oxide, zirconium oxide, aluminum oxide, and silica-containing e-glass powder. Preferably, about 10 vol. % of total amount of oxide powders is used to obtain optimum improvements. The total amount can be based on incorporation of a single or a combination of selected oxide powders. Titanium oxide and aluminum oxide improve toughness; titanium oxide also increases strength, and zirconium oxide enhances rigidity.
    • 描述了可用于具有改进的机械性能的牙科和医疗领域中的水泥材料。 水泥材料包括氟铝硅酸盐粉末和聚(丙烯酸)液体。 进一步包括生物相容的氧化物粉末,从而提高最大强度,刚性和韧性的机械性能。 导致改善机械性能的水泥材料的变化包括聚(丙烯酸)液体的浓度,并将氟硅铝酸盐粉末与不同的生物相容性氧化物粉末组合。 有用的氧化物粉末包括羟基磷灰石粉末,氧化钛,氧化锆,氧化铝和含二氧化硅的e玻璃粉末。 优选约10体积% 使用氧化物粉末总量的百分比来获得最佳的改进。 总量可以基于掺入所选择的氧化物粉末的单一或组合。 氧化钛和氧化铝提高韧性; 氧化钛也增加强度,并且氧化锆增强刚性。