Why Do You Need Teeth Whitening?

Do you know the enemy that causes tooth stains? It is quite

interesting to note that every tooth is comprised of an

inner dentin layer and a protective outer enamel layer

which is much harder.

 

Regular intake of food stuff, nicotine and caffeine tends

to form another coating over the enamel layer like a

pellicle film. This film can be removed chemically as well

as by scraping by a dentist.

 

Brushing helps to clean the teeth stains to some extent and

there are special abrasive toothpastes which help further

the process. Teeth whitening toothpastes are also available

which are effective in cleaning such stains on our teeth

enamel.

 

Our teeth enamel is porous in nature. Hydroxyapatite

crystals in the form of microscopic hexagonal ìrodsî make

up the enamel.

 

The accumulation of the foreign substances over the years

gets into the pores and settles on the inner layer where it

is very difficult to scrape them. Though these deep stains

are actually quite harmless, they do not look good.

 

Thus to get rid of these tough stains, people seek the help

of professional teeth whitening procedures.

 

During such teeth whitening procedures, a bleaching

chemical agent is used called carbamide peroxide or

hydrogen peroxide.

 

This is present in a tooth whitener and it triggers a

chemical - rather an oxidation reaction - which manage to

break the staining compounds.

 

The chemical compound carbamide peroxide breaks within the

mouth into urea and hydrogen peroxide.

 

The hydrogen peroxide plays a vital role in the teeth

whitening process.