Microflora Responsible for Failure of RCT : A Review

Endodontic treatment failure can be caused by a variety of factors, including bacterial persistence, improperly cleaned and obturated root canals, faulty coronal seal (leakage), and untreated canals (missed canals). The presence of bacteria such as Enterococcus (E.) faecalis inside the root canal system is the most common cause of endodontic failure. These bacteria are more resistant to disinfectants, resulting in an infection that persists intra-radicularly or extra-radicularly. Many other microorganism are also responsible for failure of root canal treatment, resulting in endodontic flare-up . This review article will discuss about the causes of failure of root canal treatment ,pathogenesis and strategies by which microbes persist in root canal, method of eradication of such microorganism and management of such cases. Keywords: Enterococcus, Enterococcus