Methods The methods of LAL test were used to analyze the amounts of LPS in the root canal of pulpitis,unler the condition of actual pulpitis and chronic pulpitis.

• 方法采用鲎试剂显色技术,定量检测急、慢性牙髓炎症状态下的牙髓腔内细菌内毒素含量,与正常组进行比较,分析内毒素含量与牙髓炎症状态下的临床表现间的关系。