Friday, August 2, 2013

TECH SPECIAL.............. A BRIEF HISTORY OF TOOTH BRUSH



 A BRIEF HISTORY OF TOOTH BRUSH

Mass production of toothbrushes is an achievement attributable to the
development of plastics.
It goes without saying that we human beings were already interested
In dental hygiene be-forehand, however.The practice of cleaning our teeth
goes back as far as progressive cultures in ancient times:
Around 5,000 BC, Greeks and Romans used cleaning pastes to remove
plaque that was made from such materials as animal hooves, bones and egg
shells. Toothpicks made from twigs were also used. Powdered charcoal and
tree bark were used to get rid of bad breath.
Around 3,500 BC, the Babylonians used a piece of wood the size of a pencil
 taken from the branch of a tree to chew on. Chewing caused the fibres
at one end to separate and form a kind of brush, as which the stick was then
used. Its other, pointed end acted as a toothpick. Similar findings have been
made in Egyptian graves from the time around 3,000 BC too. The chewing
stick is now considered to be the earliest predecessor of the toothbrush that
has been discovered to date.
The first toothbrush with bristles similar to those we are familiar with
today was introduced in China around 1500. It had the shape of a brush: coarse
bristles taken from the neck of domestic pigs were attached to a handle made
of bone or bamboo. This original toothbrush design has not basically changed
in any fundamental way to this day. Europeans were sceptical about the
toothbrushes imported from China, because the coarse boar bristles made
people’s gums bleed. The soft alternative made from horsehair was not
accepted either. However, the French doctor Pierre Fauchard (1678-1761),
who is considered to be the father of modern dentistry, talked disparagingly
about horsehair toothbrushes – which he described as ineffective because
they were much too soft – in his textbook “Le chirurgien dentiste or traité
des dents” that appeared in 1728. He recommended rubbing one’s teeth and
gums off daily with a natural sponge instead. Toothpicks made, for example,
from quills, silver or copper, were preferred in Europe at this time anyway.
Christoph von Hellwig (1633-1721), the town medical officer in
Bad Tennstedt/Thuringia, developed a toothbrush around 1700. There is a
toothbrush monument in his honour in the town today.
Only the wealthy could afford toothbrushes until the late 18th century.
This situation did not change until English manufacturers started
to produce them in sizable numbers from cow bones and bristles obtained
from cows, pigs and – later on – badgers too.
William Addis (1734-1808), a businessman from London, set up
the first of these production facilities in 1780. This was preceded by a prison
sentence: Addis had been arrested for disturbance of the peace and came to
the conclusion while he was forced to spend time behind bars that there
must be a better way to clean one’s teeth than with salted rags. So he took
an animal bone, drilled holes in it and glued animal bristles in the holes. This
invention was to make him rich – and ensure that his three sons had a lucrative
 business too. When the bacteriological era began in the 19th century,
awareness developed that toothbrushes could be a very effective way to spread
bacteria. Nothing was to change here, however, until toothbrushes with nylon
 bristles were introduced in 1938.
The latter were smooth and, in addition, were not hollow, so that they did
not become waterlogged
Chemical WeeklyJune 25, 2013

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