I find this article from 2015 as the industry was very concerned regarding the reemergence of the “focal infection theory” (FIT). One must note that the origins of the FIT date all the way back to Socrates – yes pre-Jesus the Greeks knew of the connection between bad teeth and disease. This artcle was published just year after the AAE published a “talking points” print out to dispell the focal infection theory using only sources of the AAE. CLICK TO SEE THIS REVIEW
Clip of the atricles abstract from the International Endodonic Journal – “If periodontal inflammation, especially severe periodontitis, can be demonstrated to be a causative or contributing factor to any or many systemic diseases, the question still remains if apical periodontitis has similar effects, and if it does, how, to whom and when? Should we be concerned about small persistent lesions only detected with CBCT, or only be concerned about large and/or multiple lesions? These questions remain unanswered.” CLICK TO REVIEW