目前主张以根管治疗替代对有较大病灶的慢性根尖周炎的根尖切除术。由于根管治疗要求严格的根管扩大和严密的根尖封闭,所以疗程较长。作者根据针刺麻醉等原理,把磁石和经络通电疗法并用治疗慢性根尖周炎,疗效显著。治疗方法用橡皮布防湿患牙。扩大根管,形成 Currently advocated the use of root canal therapy to replace the larger lesions of the apical periodontitis apical resection. As the root canal treatment requires strict root canal enlargement and tight apical seal, so a longer course of treatment. The author acupuncture anesthesia and other principles, the magnet and meridian electrotherapy combined with chronic apical periodontitis, significant effect. Treatment with a blanket to prevent moisture teeth. Expand root canal formation