title: Root canal microflora: qualitative changes after endodontic instrumentation.
abstract: The changes in the pattern of bacteria in root canal after repeated washing with NaOCl and endodontic instrumentation were evaluated. Samples were obtained from the root canals of patients before and after endodontic instrumentation, and analyzed according to the usual microbiological techniques. Washing with NaOCl and endodontic instrumentation act against bacteria such as Peptostreptococci, Streptococcus sanguis, Actinomyces israelii, Proteus mirabilis, Bacteroides, whereas Streptococcus lactis and Aerococcus were present before and after endodontic instrumentation. Environmental conditions such as low pH could be responsible for the persistence of gram-positive bacteria. The use of topical treatment and the associated endodontic instrumentation seem useful in the eradication of some bacteria in the root canal.
authors.affiliation: Istituto di Farmacologia dell'Università di Verona, Policlinico Borgo Roma, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Cavalleri
authors.forename: L
authors.initials: L
authors.lastname: Cuzzolin
authors.forename: G
authors.initials: G
authors.lastname: Urbani
authors.forename: G
authors.initials: G
authors.lastname: Benoni
mesh_terms: D003729:Dental Care / Q000379:methods; D003786:Dental Pulp Cavity / Q000382:microbiology*; D006094:Gram-Positive Bacteria / Q000187:drug effects*; D006801:Humans; D012390:Root Canal Therapy