Evaluation of the Susceptibility of Multispecies Biofilms in Dentinal Tubules to Disinfecting Solutions.

•The effect of the source of biofilm bacteria on their susceptibility in dentinal tubules to disinfecting solutions is evaluated.•Mature mono- and multispecies biofilms in dentinal tubules are more resistant to disinfectants than corresponding young biofilms.•The susceptibility of the monospecies Enterococcus faecalis dentin biofilm showed strain-related differences, whereas the multispecies biofilms from different donors showed similar susceptibility.