磁戒指在扩锉根管中的应用河南省许昌市人民医院口腔科陈长山，郭瑞芳，娄海滨在根管治疗过程中，扩锉根管时稍有不慎容易将扩锉根管器械从手中滑脱，甚至落入气管或吞入消化道，造成严重事故。针对这一问题，我们根据磁场的磁吸特性，制作了一种磁戒指，有效地解决了这一... Magnetic ring in the expansion file root canal application Xuchang City People's Hospital of Henan Province, Department of Stomatology Chen Changshan, Guo Ruifang, Lou Haibin in the root canal treatment, expansion of the root canal when accidentally slippery extension of the root canal instrument from the hands of , Or even into the trachea or swallowed the digestive tract, causing serious accidents. In response to this issue, according to the magnetic properties of the magnetic field, we have produced a magnetic ring, effectively solve this ...