WONDER #148: Who Invented Dental Floss?

Question 1 of 3

Who is generally given credit for the invention of modern dental floss?

1. Levi Spear Parmly
2. Benjamin Franklin
3. George Washington
4. Asahel M. Shurtleff

Question 2 of 3

Who was granted the first patent for dental floss in 1874?

1. Levi Spear Parmly
2. Thomas Jefferson
3. Franklin Roosevelt
4. Asahel M. Shurtleff

Question 3 of 3

Early dental floss was made of silk threads, whereas most modern dental flosses are made of what material?

1. gold
2. cheese
3. plastic
4. cotton

Check your answers online at https://wonderopolis.org/wonder/who-invented-dental-floss.