Hi sir....   The number of sittings depends upon the degree of infection in your root canal and morphology of root canal(curved root canal)....   If the infection is less and the morphology is not much complicated,then single sitting is enough to do root canal... X_ray(IOPA) of the tooth should be done to determine the number of root caals and morphology of root canal...

Hi Root canal for multiple tooth can be started in single sitting ,depends on the infection and root morphology it might take 2 to 3 sittings . After it should be followed by crown placement.

A root canal may require 2 or more sittings depending on the infection inside. But 2 or 3 teeth can be started together provided the patient is cooperative