根管内粪肠球菌感染的研究进展

粪肠球菌（E.faecalis）在治疗失败根管内的检出率较高，是根管持续感染和再感染的重要微生物之一。粪肠球菌在治疗前后根管内的感染特点不同，并且对抗菌药物有较强耐药性。目前的根管清理和消毒方法难以将定植于根管中的粪肠球菌彻底清除。本文就有关根管内粪肠球菌的感染特点及其对抗菌剂的敏感性研究进展作一综述。

Infection of Enterococcus faecalis in Root Canal

A recognized pathogen in post-treatment endodontic infections, Enterococcus faecalis(E. faecalis) is fre- quently isolated both in mixed flora and in monocultures. E. faecalis is rarely present in primary apical periodontitis, but it is the dominant microorganism in root-filled teeth presenting with post-treatment apical periodontitis. It is probably the species that can best adapt to and tolerate the ecologically demanding conditions in the filled root canal. Eradication of E. faecalis from the root canal with chemomechanical preparation and using disinfecting irrigants and antibacterial dressings remains a challenge.