Before revision: There is some limited evidence of benefit over and above standard treatment regimens , but the clinical significance of this is not yet known superiority (or otherwise) of the intervention had not at the time of review been conclusively demonstrated.
After revision: Eberhardt (2008) published a Cochrane review (systematic review and meta-analysis) which found modest benefit for full mouth disinfection , but the superiority (or otherwise) of the intervention had not at the time of review been conclusively demonstrated.