本文报导,使用特殊设计的输送器,传递银汞作倒根充,能达到满意的根尖封闭。不管使用什么充填材料,大约所有前牙的90%,常规根充是成功的。充填失败的一个重要原因,可能是在前牙的10%根尖2.2mm处,存在一个或多个副根管。单纯根切,可以切除根尖的副根管,然而,根尖仍不能达到良好封闭的目的。银汞是作根尖封闭的理想材料,但在与组织接触中有少量遗留。因此,在倒根充放置银汞时,就要尽可能不使银汞暴露在软组织中。对以前在例根充时,银汞碎屑散落在整个手术区,术后X线显示“雪花样”透亮点,以致再要清理创面。从而促使作者设计 This article reports the use of specially designed conveyors to transfer amalgam for root-filling, to achieve a satisfactory apical seal. With about 90% of all anterior teeth irrespective of the filling material used, conventional rooting is successful. One of the most important reasons for the failure of filling is the presence of one or more secondary root canals at the 10% apical portion of the anterior teeth at 2.2 mm. Simple root cutting, you can cut the apical root canal, however, the root tip still can not achieve the purpose of a good closure. Amalgam is ideal for apical sealing, but there is a small amount of contact with the tissue. Therefore, in the inverted root filling silver amalgam, mercury as much as possible not to expose mercury in the soft tissue. On the previous case of root filling, silver mercury debris scattered throughout the surgical area, postoperative X-ray showed “snow-like” bright spot, so that you want to clean the wound again. Thus contributing to the author's design