Conclusion The root canal sterilization drug of erythromycin ethylsuccinate-metronidazole-CP was a safe and effective method to promote the restoration of root apex diseases.

• 结论琥珀酸红黴素-甲硝唑-樟脑酚进行根管消毒，是一种安全、有效的促进根尖病变愈合的方法。