Siquera and Rocas 2009
- Apical Periodontitis has a polymicrobial aetiology
- Because it is an infectious disease, rationale for endo treatment is to eradicate occurring infection and/or prevent microorganisms from infecting and re-infecting the root canal or periradicular tissues
- phyla with highest species richness were
- firmicutes
- Bacteroidetes
- actinobacteria
- proteobacteria
