Does swallowing dental plaque causes clotting and heart disease?

Plaques: Dental plaque and the plaque that occurs in the blood vessels of the heart are not one in the same. Swallowing dental plaque does not cause heart disease in the way that you are implying. While there is some controversy, there seems to be a link between patients who have periodontal (gum) problems and heart disease. It's not entirely understood at this point but appears related to inflammation.

Plaque Eww: Plaque is a descriptive term which is a conglomerate of things, like biofilm, bacteria, food debris (dental plaque), blood cells, etc. They have isolated identical bacteria from dental plaque and atherosclerotic plaques, but swallowing dental plaque does not lead to heart disease or everyone would have heart disease. The main problem is related to deep inflammation not the plaque itself.