Artificial dental root
    1.
    发明授权
    Artificial dental root 失效
    人造牙科根

    公开(公告)号:US5205745A

    公开(公告)日:1993-04-27

    申请号:US684927

    申请日:1991-06-11

    IPC分类号: A61C8/00

    CPC分类号: A61C8/0022

    摘要: The present invention relates to an artificial ceramic dental root, wherein the outer circumference portion of the main body of the artificial dental root which has been implanted in the jaw bone is integrally formed of ceramic material; the diameter of a dental neck-corresponding portion of the artificial dental root extending from a part inserted into the top of the jaw bone to at least a part of the dental neck is made larger than that of a base; and a tapered portion is provided between said base and the dental neck-corresponding portion, whereby stress concentration is relieved and the artificial dental root is obtained which is highly resistant to outer forces, especially a force in an oblique direction. Even when a ceramic coated layer is layered over a metallic core to form a layer structure, the ceramic layer is prevented from coming off.

    摘要翻译: PCT No.PCT / JP90 / 01094 Sec。 371日期1991年6月11日 102(e)1991年6月11日PCT PCT 1990年8月29日PCT公布。 出版物WO91 / 03213 1991年3月21日。本发明涉及人造陶瓷牙根,其中已经植入颚骨中的人造牙根的主体的外周部分由陶瓷材料一体形成; 将从插入颚骨的顶部的部分延伸到牙颈的至少一部分的人造牙根的牙颈对应部分的直径比基部的直径大; 并且在所述底座和牙颈对应部分之间设置锥形部分,由此减轻应力集中,并且获得对外力特别是倾斜方向的力具有高度抵抗力的人造牙根。 即使当陶瓷涂层层叠在金属芯上以形成层结构时,也防止陶瓷层脱落。

    Materials for living hard tissue replacements
    2.
    发明授权
    Materials for living hard tissue replacements 失效
    生物硬组织替代材料

    公开(公告)号:US5356436A

    公开(公告)日:1994-10-18

    申请号:US872949

    申请日:1992-04-21

    IPC分类号: A61L27/10 C04B35/22 A61F2/28

    摘要: The materials for living hard tissue replacements of the present invention comprise a ceramic material which contain Cao and SiO.sub.2 as essential components, and MgO as an optional components, are substantially free from calcium phosphate and are capable of forming a compound based on calcium phosphate by contact with an aqueous solution containing phosphorus, and show high biological affinity.

    摘要翻译: 本发明的活体硬组织替代物的材料包括含有CaO和SiO 2作为必要组分的陶瓷材料,MgO作为任选的组分,基本上不含磷酸钙,并且能够通过接触形成基于磷酸钙的化合物 含有磷的水溶液,并且显示出高生物亲和力。

    Ceramic material and method for making
    5.
    发明授权
    Ceramic material and method for making 失效
    陶瓷材料和制造方法

    公开(公告)号:US5082808A

    公开(公告)日:1992-01-21

    申请号:US593299

    申请日:1990-10-04

    摘要: A ceramic material for use as artificial bone and dental root is provided which takes the form of a composite sintered body comprising crystalline calcium phosphate grains as a matrix and inorganic whiskers dispersed therein. An intermediate layer containing elements in either one or both of the whiskers and the grains intervenes between the whiskers and the grains. The material has physical toughness and strength as well as biomedical affinity. The material is prepared by mixing calcium phosphate and a whisker-forming material or whiskers and sintering the mixture at a temperature of 800.degree. to 1600.degree. C., followed by slow cooling to allow formation of the intermediate layer.

    摘要翻译: 提供了用作人造骨和牙根的陶瓷材料,其采用包含结晶磷酸钙颗粒作为基质和分散在其中的无机晶须的复合烧结体的形式。 包含晶须和晶粒之一或两者中的元素的中间层介于晶须和晶粒之间。 该材料具有物理韧性和强度以及生物医学亲和力。 该材料通过混合磷酸钙和晶须形成材料或晶须并在800℃至1600℃的温度下烧结混合物制备,然后缓慢冷却以形成中间层。