Vertix是一种牙冠内附着体，含一凹槽和一凸缘。凹槽常附于桥基冠内，凸缘附于修复体。阴、阳二部分的结合是经磨擦作用或机械结合（图1）。使用Vertix附着体可去除在复制和铸造阴模广的支架制作上的困难。Vertix附着体可直接连接在支架铸模上，用自凝树脂、焊接或点焊。使用Ve Vertix is ​​a crown attachment with a groove and a flange. Groove often attached to the bridge crown, the flange attached to the prosthesis. Yin and Yang combination of two parts by friction or mechanical binding (Figure 1). The use of Vertix attachments can eliminate the difficulties of making a stent that duplicates and molds negative molds. Vertix attachments can be attached directly to the stent mold, with self-curing resin, welding or spot welding. Use Ve