根管疗法是近年来用于治疗牙髓病和尖周病的有效方法之一。我科在普通根管疗法药物中加入灭滴灵治疗慢性根尖周病50例57颗病牙获良好效果,现报告如下。1　一般资料本文95例,随机分成两组,治疗组50例57颗患牙,其中男性38颗,女性19颗;前牙21颗,后牙36颗;根尖有阴影者32颗,根尖无 Root canal therapy is one of the effective methods in the treatment of endodontic and apical diseases in recent years. Our department in the ordinary root canal therapy drugs metronidazole treatment of chronic apical disease in 50 cases of 57 cases of teeth obtained good results, are as follows. 1 General Information 95 cases of this randomized divided into two groups, the treatment group of 50 patients 57 teeth, including 38 males and 19 females; anterior teeth 21, posterior teeth 36; apical shadow 32, apical no