You told us in a channeling that in about 80% of periodontal disease cases, the chronic gingivitis is actually caused by a virus, and a search of the literature turned up some scientific support of viral involvement in that disorder. A paper by M. Kazi, et al. (J. Clin. Diag. Res., 2015 Jul, Vol-9(7): DC05-DC08) describes that among 75 patients with periodontitis, 81.33% as a group had detectable HSV-1, HSV-2, Epstein-Barr virus, or cytomegalovirus. Although scientifically, this is only showing an association of virus presence, is this actually reflecting true causation of the illness for those patients?

You are absolutely correct here, that the presence of virus in these patients was not an incidental finding at all but readily studied because of an active ongoing chronic population of replicating pathogenic virus underlying the disease symptoms. This complex picture with the presence of many microorganisms of all kinds, it being the oral cavity and open to the environment, after all, has kept all the focus on the more readily seen and cultured bacterial species that can be infectious and cause periodontal disease as well, but it is the viruses which are much more subtle, insidious, and intractable that plague many people over a long period of time. They are the ones much more difficult to eradicate, among the microbial life.