Agreed, the cause and effect between heart disease and periodontal disease is not well proven. However, the beneficial effects of flossing in preventing periodo

Agreed, the cause and effect between heart disease and periodontal disease is not well proven. However, the beneficial effects of flossing in preventing periodontal disease is well understood and you're welcome to read the literature yourself if you don't believe me. I believe this is exactly what I said in my original comment.