Dental floss is an ancient invention. Researchers have found dental floss and toothpick grooves in the teeth of prehistoric humans. Levi Spear Parmly (1790-1859), a New Orleans dentist is credited as being the inventor of modern dental floss (or maybe the term re-inventor would be more accurate). Parmly promoted flossing with a piece of silk thread in 1815.
Yes. Dental floss the expire. About 3 years regular. But the flavor will be dispear with the time. So the flavor will keep about 1 year. If the biodegradable dental floss, the expire will be within 1 year. The strength will be less and less with time pass.
More than 3 million miles of dental floss are bought each year in North America - an average of 18 yards per person.
Cotton candy (Candy Floss) was first recorded in the 16th century.
The first year of production was 1959.
If you are speaking generally, then you r best protection for good dental health is brush and floss ! Visit a dentist at least once a year for a check up and cleaning.
The first edition of Modern Dental Assisting was published in 1976.
The first petrol-driven car manufactured in Australia, was built in 1897.
1968
The first car was manufactured in 1908
1986
what year manufactured
The first Ford Mustang was manufactured in 1964 . There was a gap in Mustang Convertible manufacturing from 1974 to 1983.