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    Dental materials
    1.
    发明授权
    Dental materials 有权
    牙科材料

    公开(公告)号：US06315566B1

    公开(公告)日：2001-11-13

    申请号：US09314491

    申请日：1999-05-18

    申请人： Byron Ciping Shen ,  Sumita B. Mitra ,  Xiaodong Zhang ,  Robert D. Kuehn

    发明人： Byron Ciping Shen ,  Sumita B. Mitra ,  Xiaodong Zhang ,  Robert D. Kuehn

    IPC分类号： A61C504

    CPC分类号： A61K6/0017 ,  A61K6/0023 ,  A61K6/0073 ,  A61K6/083 ,  C08L33/00 ,  C08L29/04

    摘要： Dental materials are provided comprising Component i), which is a hydrogen bondable compound that is a polymer having a molecular weight greater than about 10,000, and Component ii), which is a hydrogen bondable bridging compound. One of Components i) and ii) contains 2 or more hydrogen-bond donor sites per compound, and the other of Components i) or ii) contains 2 or more hydrogen-bond acceptor sites per compound, which hydrogen-bond acceptor sites are not capable of also acting as hydrogen-bond donor sites. Components i) and ii) are present in an amount sufficient to exhibit at least 10% higher Relative Viscosity, and optionally at least one of i) or ii) is polymerizable. If the material contains any compounds having only one hydrogen-bond donor site or hydrogen-bond acceptor site per compound, the ratio of hydrogen-bond donor sites on compounds having only one hydrogen-bond donor site to hydrogen-bond donor sites on compounds having 2 or more hydrogen-bond donor sites per compound is less than 0.25, and the ratio of hydrogen-bond acceptor sites on compounds having only one hydrogen-bond acceptor site to hydrogen-bond acceptor sites on compounds having 2 or more hydrogen-bond acceptor sites per compound is less than 0.25.

    摘要翻译： 提供牙科材料，其包含作为分子量大于约10,000的聚合物的可氢键化合物的组分i）和作为可氢键连接的桥连化合物的组分ii）。 组分i）和ii）每个化合物含有2个或更多个氢键供体位点，而组分i）或ii）中的另一个含有每个化合物2个或更多个氢键受体位点，该氢键受体位点不是 也可以作为氢键供体位点。 组分i）和ii）以足以显示至少10％以上的相对粘度的量存在，并且任选地，i）或ii）中的至少一种是可聚合的。 如果该材料含有每个化合物仅具有一个氢键供体位点或氢键受体位点的任何化合物，则仅具有一个氢键供体位点的化合物上的氢键供体位点与化合物上氢键供体位点之间的氢键供体位置之比 每个化合物的2个或更多个氢键供体位置小于0.25，并且在具有2个或更多个氢键受体的化合物上具有仅一个氢键受体位点的化合物上的氢键受体位点与氢键受体位点之间的氢键受体位置之比 每个化合物的位置小于0.25。

    Dental matrix clamp for tooth restoration procedures
    2.
    发明授权
    Dental matrix clamp for tooth restoration procedures 失效
    用于牙齿修复程序的牙科夹具

    公开(公告)号：US06293796B1

    公开(公告)日：2001-09-25

    申请号：US09427901

    申请日：1999-10-27

    申请人： Matthew C. Trom ,  Byron Ciping Shen ,  John W. Dubbe

    发明人： Matthew C. Trom ,  Byron Ciping Shen ,  John W. Dubbe

    IPC分类号： A61C504

    CPC分类号： A61C5/85

    摘要： A matrix clamp used in dental procedures to restore teeth to their natural shapes has a pair of gripping portions that are each connected to a cross-over bar. When the gripping portions are depressed by finger pressure, a pair of clamping tines connected to the cross-over bars spread apart from each other to enable the tines to be placed in contact with a sectional matrix band. When the gripping portions are released, a coil spring portion of the matrix clamp urges the tines toward each other so that the sectional matrix band is secured against the tooth and the clamp is retained in its selected position.

    摘要翻译： 在牙科手术中使用的用于将牙齿恢复到其自然形状的矩形夹具具有一对夹持部分，每个抓握部分连接到交叉杆。 当手指按压抓握部分时，连接到交叉杆的一对夹紧齿互相分开，使得齿可以与截面矩阵带接触。 当夹紧部分被释放时，矩形夹具的螺旋弹簧部分将尖齿朝向彼此推动，使得截面矩阵带固定抵靠齿并且夹具保持在其选定位置。