Many different medications inside the root canal have been used over the years and all require much more than a few minutes of use in the canal to be effective. With Single visit root canal treatment limits medication use to minutes - rather than hours or days or weeks as in the case of multiple visit treatment. According to Bystrom, a well respected researcher in endodontics, leaving Calcium Hydroxide inside the canal for 4 weeks renders the canals bacteria free in 97% of cases studied. So how do we ensure maximum sterilization of the root canal system during single visit endodontic procedure
The Cochrane systematic review concluded that there is no difference between single and multiple visit rct. There might be a higher flare up and pain incidence in single visit endo.
Addressing the disinfection question!
There are clear established irrigation protocols to support the single visit rct in both viatl and non vital cases.
My personal long term results are proving similar results.