Is there a connection between stroke and gum disease?

Possibly: A 2009 review of several studies found an overall association between poor oral health and atherosclerosis which can lead to stroke. The reason why is not completely understood but systemic inflammation may play a role. See study here: http://www.Ncbi.Nlm.Nih.Gov/pubmed/19757736.

Depends: Periodontal disease, a treatable condition, is an independent risk factor for cerebral ischemia in men and younger subjects.

Yes: While the official stance is that gum disease can not cause a stroke, it is considered a risk factor for any thpe of cardiovascular event.

Possibly?: While the definitive link between cardiovascular disease and gum disease isn't completely understood by medical science, there appears to be a connection. So while gum disease isn't a direct factor with regards to a stroke, it would be prudent to maintain good oral health to minimize any possible risk.