It was meant as a humorous comment based on the fact that a lot of people have ptfe tape knocking around as you don't need to be a plumber to have some, its basic diy kit. And as for the basic dental health care I am fully aware of the uses of dental floss I'm just one of the many millions of people who would class a toothbrush, some toothpaste, a little mouthwash and a six monthly checkup by a dentist as being 'basic dental hygiene' maybe you are a little on the short side if that one went over your head?