The Truth About Brushing Your Teeth

According to the American Heart Association, gum disease does not  increase risk for heart attacks or a stroke. In prior experiments, a connection was found that people with heart disease also commonly had gum disease.  However, correlation does not mean causation; many people with both both gum disease and heart
disease engage in the same activities that are high in risk factors, such as smoking, obesity, diabetic, and a high blood pressure.
http://thechart.blogs.cnn.com/2012/04/19/gum-disease-doesnt-lead-to-heart-attack-or-stroke/?hpt=he_c2