I managed to order one, after struggling with the checkout process for around 10 minutes @ 11:50 ET. I think I have seen at least three different types of errors, on the cart as well as during the payment stage.
Approximately 500 bacterial species reside in the oral cavity. Of these, 415 species are estimated to be present in subgingival plaque. Specifically:
"A. actinomycetemcomitans has been strongly implicated in localized aggressive (juvenile) periodontitis
Likewise, bacteria such as P. gingivalis, A. actinomycetemcomitans, Tannerella forsythia (formerly, Bacteroides forsythus), Treponema denticola, and Eikenella corrodens have been associated with chronic (adult) periodontitis."
Bacteria consume sugar, which produces acid as a waste-product, which erodes enamel. Gum disease is primarily an inflammatory response to the presence of external irritants like dental plaque (which contains bacteria as well).