The problem with surveys are that only people with stories would respond to one like this. So of the 3,000 surveyed, those that didn't mail in the free survey weren't counted in the survey? I'm a little suspicious as to what the survey really was. As with most "8 out of 10 dentists prefer this toothpaste" surveys, you really have no idea. Now that I read LAN-deRf_HA's post, I agree. This "article" is pointless and irrelevant without more detail. Don't bother reading it if you chose to read the comments first.