厌氧菌与口腔感染性疾病关系密切［１］。牙髓感染多为厌氧菌混合感染。甲硝唑是一种较好的抗厌氧菌药物，性能稳定，不易产生耐药性。我科应用复方甲硝唑氧化锌糊剂（简称复方甲氧糊剂）治疗早期牙髓炎、深龋及意外穿髓，保存活髓。现报告如下。材料与方法１　临床资料１１ Anaerobic bacteria and oral infectious diseases are closely related [1]. Pulp infection mostly mixed with anaerobic infections. Metronidazole is a good anti-anaerobic drugs, stable performance, easy to produce resistance. I Division compound metronidazole zinc oxide paste (referred to as Compound Methoxy Paste agent) for the treatment of early pulpitis, deep caries and accidental marrow, save live pulp. The report is as follows. Materials and Methods 1 Clinical data 1  1