If you’re ever sitting in the dentist’s chair, bracing yourself for an procedure called “scaling,” which cleans out the bacteria in your infected gums, just say to yourself, “This could have been avoided. I did not have to be here.” Some Americans must be getting the message and finally are brushing and flossing more efficiently, because serious gum problems are on the decline. Nevertheless, gum disease continues to cause more tooth loss than cavities, and is second only to the common cold in terms of prevalence (98% of people over age 60 have some degree of gum disease). And now, researchers have linked severe gum disease to an increased risk of both heart disease and strokes