In search of endodontic pathogens.

Success of root canal therapy depends on the complete eradication of microflora from the root canal system. A great deal of research is needed to identify and define the role of the pathogens which are involved in the pathogenesis of the periradicular diseases. This will help the endodontist to plan the best treatment by irradiation of pathogens which, in turn predict the outcome of the treatment. This article reviews the endodontic microflora, routes of microbial entry, methods to identify endodontic microbes and markers that permit the clinician to know when to conclude the treatment.