RESTORATIVE MATERIALS
    6.
    发明申请
    RESTORATIVE MATERIALS 审中-公开
    恢复材料

    公开(公告)号:US20140053758A1

    公开(公告)日:2014-02-27

    申请号:US13981421

    申请日:2012-01-24

    IPC分类号: A61K6/083 A61L24/12

    摘要: The present invention relates to restorative materials, in particular to glass-ionomer cements. More particularly, the present invention relates to glass-ionomer cements having particular utility in the repair of human hard tissue, in particular as dental restorative materials and in orthopaedic surgery. We describe a composition comprising a mixture of a glass ionomer cement and zinc phosphate. Preferably, the composition comprise from 40 to 95% by weight of glass ionomer cement and from to 60% by weight of zinc phosphate. The present invention also provides a powdered composition comprising a fluorosilicate glass and deactivated zinc oxide. Such that the zinc phosphate is formed in sith by reaction between the zinc oxide and phosphoric acid.

    摘要翻译: 本发明涉及修复材料,特别涉及玻璃离聚物粘固剂。 更具体地说,本发明涉及在修复人类硬组织,特别是作为牙齿修复材料和整形外科手术中具有特别用途的玻璃离聚物粘固剂。 我们描述了包含玻璃离聚物粘固剂和磷酸锌的混合物的组合物。 优选地,组合物包含40至95重量%的玻璃离聚物粘固剂和至少60重量%的磷酸锌。 本发明还提供一种包含氟硅酸盐玻璃和失活的氧化锌的粉末状组合物。 使得磷酸锌通过氧化锌和磷酸之间的反应而形成。

    Hydraulic cement compositions and methods of making and using the same
    9.
    发明授权
    Hydraulic cement compositions and methods of making and using the same 有权
    液压水泥组合物及其制造和使用方法

    公开(公告)号:US07575628B2

    公开(公告)日:2009-08-18

    申请号:US11390702

    申请日:2006-03-27

    IPC分类号: A61L24/02 C04B7/02 C04B12/02

    摘要: A hydraulic cement comprising a calcium silicate and at least one phosphate compound. The phosphate compound is included in an amount sufficient to react a major portion of the calcium hydroxide that is produced during hydration of the cement to hydroxyapatite or other calcium phosphates. The phosphate compound is preferably a mono-calcium phosphate. The cement is useful in both bio-medical/dental and engineering applications. The calcium hydroxide is reacted by the phosphate to form hydroxiapatite or other calcium phosphate that is co-precipitated with the calcium silicate hydrate to form a composite-like structure on a nano-scale level. The reduced calcium hydroxide content in the set cement increases its strength and reduces its pH. The hydroxiapatite content and the reduced pH render the cement bio-active and suitable for use in medical and dental implants, for example, for replacement bone and tooth material. Due to its high strength, the cement may also be used for structural/engineering applications.

    摘要翻译: 一种包含硅酸钙和至少一种磷酸盐化合物的水硬性水泥。 磷酸盐化合物的含量足以使水泥水化过程中产生的大部分氢氧化钙与羟基磷灰石或其它磷酸钙反应。 磷酸盐化合物优选为单磷酸钙。 该水泥在生物医学/牙科和工程应用中都很有用。 氢氧化钙由磷酸盐反应形成与硅酸钙水合物共沉淀的羟基磷灰石或其他磷酸钙,以在纳米级水平上形成复合类结构。 固定水泥中的还原氢氧化钙含量增加其强度并降低其pH。 羟基磷灰石含量和降低的pH使得水泥生物活性物质适合用于医疗和牙科植入物,例如用于替代骨和牙齿材料。 由于其高强度,水泥也可用于结构/工程应用。