- Toothpaste is an abrasive paste (an
abrasive is something that will scratch or
- In the case of toothpaste it grinds away
the leftover food and plaque on your teeth,
with the help of your toothbrush.
- The abrasive in toothpaste is called
Dicalcium phosphate dihydrate and it makes
up about a 5th of a tube of toothpaste
- The other main part of toothpaste is the
paste which is made up of water and things
to help it spread through your mouth easily
like a type of detergent which makes it foam
and something to make your teeth shiny.
Did You Know?
- The flavours of toothpaste are usually
from plants like Spearmint and Peppermint
most toothpastes are sweetened with
- Before toothpaste was invented people
used all kinds of dry, rough things as an
abrasive to clean their teeth Ė things like
crushed eggshell, pumice the burnt hooves of
- Before toothbrushes were invented people
used twigs or their fingers to brush their
- A couple of hundred years ago when
people didnít know about brushing their
teeth most people had black rotten teeth
especially if they ate lots of sugar like
Queen Elizabeth the first.
Egyptian recipe for toothpaste
The world's oldest-known
formula for toothpaste, used more than 1,500
years before Colgate began marketing the first
commercial brand in 1873, has been discovered on
a piece of dusty papyrus in the basement of a
In faded black ink made of soot
and gum arabic mixed with water, an ancient
Egyptian scribe has carefully described what he
calls a "powder for white and perfect teeth".
When mixed with saliva in the
mouth, it forms a "clean tooth paste".
According to the document,
written in the fourth century AD, the
ingredients needed for the perfect smile are one
drachma of rock salt - a measure equal to one
hundredth of an ounce - two drachmas of mint,
one drachma of dried iris flower and 20 grains
of pepper, all of them crushed and mixed
The result is a pungent paste
which one Austrian dentist who tried it said
made his gums bleed but was a "big improvement"
on some toothpaste formulae used as recently as
a century ago.