Is there a link between Periodontal Disease and Cardiovascular disease?

Periodontal Disease and Cardiovascular disease, is there a link?– NOT allowed to use internet sources for this essay. We can only use journal articles from magazine or college library data base..I can provide you with the password to my college library database. Please make sure it is double spaced and change the title question to something more has to be a question! I need the references and everything in APA format. My college library data base address is: student ID and mine is : 0198381